CN101182760B - Under balance drilling revolution control device - Google Patents
Under balance drilling revolution control device Download PDFInfo
- Publication number
- CN101182760B CN101182760B CN2007101349166A CN200710134916A CN101182760B CN 101182760 B CN101182760 B CN 101182760B CN 2007101349166 A CN2007101349166 A CN 2007101349166A CN 200710134916 A CN200710134916 A CN 200710134916A CN 101182760 B CN101182760 B CN 101182760B
- Authority
- CN
- China
- Prior art keywords
- housing
- bearing
- clip
- seal
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The present invention discloses an imbalanced drilling rotation control device. A shell (3) is provided with two groups of hydraulic cylinders (4); lathedogs (2) respectively on the left and the right are symmetrically embedded on the upper end of the shell (3); a bearing assembly 1 is arranged on the shell (3), thus forming the rotation control device as a whole. The lathedogs (2) on the left and the right are opened by extending the hydraulic cylinder (4) and closed by drawing back the hydraulic cylinder (4); the bearing assembly (1) is tightly clamped on the shell (3) so as to tighten two groups of upper and lower safety screws (7). The present invention solves the problem that the prior rotation control head in our country is low in level and incomplete, as well as the problems that the maintenance is difficult, the price of maintenance is high and the accessories are imported.
Description
Technical field
The present invention relates to machine control unit, be specifically related to the under balance pressure drilling rotating control assembly that uses in a kind of oil under balance pressure drilling.
Background technology
Under-balanced drilling technology is full-fledged at present, and under-balanced drilling technology also obtains approval in the effect of finding and protect aspects such as oil-gas Layer and raising bit speed.Along with petroleum industry develops rapidly, field of oil drilling with under-balanced drilling technology as a kind of one preferred technique.
Under balance pressure drilling; Be exactly in the process of drilling well; The pressure that the stratum produces in the pit shaft is greater than the pressure that drilling well circulatory mediator density produces all the time, all the time will be under the pressure that strata pressure produces greater than drilling well circulatory mediator density, and band is compressed into capable under-balance drilling operation.During pressure that the pressure that the stratum produces in the pit shaft produces greater than drilling well circulatory mediator density, strata pressure will push away drilling well circulatory mediator high speed uplink, if well head does not have control device, the blowout phenomenon will take place.In order to address this problem, just need swivel control head to be installed and to accomplish this process at well head.
Mostly domestic employed Spin Control head type is the WILLIAMS and the SHAFFER of high price import, wherein in the majority with WILLLIAMS.On the one hand, the high pressure WILLIAMS7100EP Spin Control head assembly 35MPa of anti-static pressure the, dynamic pressure 17.5MPa, the controlled pressure of the well head of the underbalance well that bores generally all is no more than 5MPa at present; The maintenance cost of WILLIAMS7100EP swivel control head is expensive unusually on the other hand, more than 500 ten thousand yuans of cover swivel control head prices, and a cover bearing unit repair expense is about 200,000 yuans; Domestic research in this respect occupy the leading position with Sichuan, they developed oneself in, low pressure (3MPa, 7MPa, 10.5MPa) swivel control head product, and use at the scene.
Summary of the invention
The objective of the invention is to: a kind of under balance pressure drilling rotating control assembly is provided; Solve the low and unsound problem of present China swivel control head pressure rank on the one hand; Maintenance difficult, the maintenance price that solves the WILLLIAMS7100EP swivel control head on the other hand is expensive, accessory needs problems such as import, realizes with lower expense developing under balance pressure drilling market.
Technical solution of the present invention is: this rotating control assembly is made up of bearing assembly, clip, housing, fluid cylinder; Two groups of fluid cylinders are installed on the housing; Clip becomes the bilateral symmetry inset type to be installed in the housing upper end, and bearing assembly is installed on the housing through the sealing delta-ring; Open left and right sides clip through the elongation of fluid cylinder; Bearing assembly is seated in the housing through the sealing delta-ring; Close left and right sides clip through the withdrawal of fluid cylinder, bearing assembly is installed on the housing firmly, and the sealing surface between bearing assembly and the housing is lived in the sealing delta gasket closure; Two groups of breaker bolts tighten up and down, have so just accomplished the installation of under balance pressure drilling rotating control assembly.
In the under balance pressure drilling rotating control assembly of the present invention, circle is the conical surface in the sealing delta-ring, and angle is the a=30 degree, and the sealing delta-ring is embedded in the holddown groove of housing closely.
In the under balance pressure drilling rotating control assembly of the present invention, the interior circle of clip is a round table surface, and a conical surface is arranged between two round table surface, this conical surface angle b=30 degree; One end of last hoop has pin-and-hole, and clip is installed on the housing through big pin, and clip other end welding-on has otic placode, and the fluid cylinder pin through fluid cylinder is connected on the fluid cylinder; Each welding-on one boss on the clip upper and lower end face; The boss of left side clip welding-on is a screwed hole, and the boss of right clip welding-on is a circular hole, when fluid cylinder withdrawal clip is bumped in the housing; Left and right sides clip boss connects together through breaker bolt; Clip is stuck on the housing firmly, and clip can only lean on stretching of fluid cylinder to make clip radially be bumped into or leave housing, and clip is moved the housing high and low.
In the under balance pressure drilling rotating control assembly of the present invention, respectively there is square groove the front and back on housing top, are used for being bumped into clip; The right part welding-on of housing has two boss up and down, pin-and-hole is arranged, through the pin-and-hole jointing clip on the boss; The middle part of housing is an eight aspect, and the middle part welding-on has two side flanges of size, and flange connects the flap type that surges greatly, and little flange connects pressure sensor, and four otic placodes with holes that have that are distributed on the housing middle part are installed guy wire correction housing; The front and back of housing respectively are welded with baffle plate, and boss restriction clip enable possition is arranged on the baffle plate.
In the under balance pressure drilling rotating control assembly of the present invention, bearing assembly is made up of gluing core cup, bearing housing, seal, lower glue core, and gluing core cup is connected the whole formation of lower glue core bearing assembly through bearing housing with seal; Bearing assembly is provided with three groups of snap joints and passage; Two groups of passages of this snap joint lead to bearing housing; One-in-and-one-out is used to annotate lubrication oil, and lubrication oil injection bearing case also comes lubricating bearings and oil sealing from the bearing housing reciprocation cycle of coming out after supercooling, to reinject in the bearing housing constantly; The logical seal of another group passage of this snap joint; Keep certain pressure after lubrication oil injected seal; Pressure medium in the one side balanced seal external well; Lubricating mechanical sealing end surface and keep the thrust of mechanical seal on the other hand, and allow lubrication oil with pressure the slight seal outside that leaks into to be arranged through mechanical seal end surface.
Described gluing core cup is made up of drop handle cover, pressure cap, plain seal pad, urceolus, connector, gluing core, connecting bolt; The drop handle cover is through being threaded on the connector; Connector connects the gluing core closely, and drop handle puts the groove of four inclinations the kelly bar driver is installed; The upper surface of connector is pressed on the end face of urceolus through the plain seal pad, tightens pressure cap connector, plain seal pad, urceolus are pushed down, and realizes the sealing between connector and urceolus; Four boss platforms are arranged on the maximum cylindrical of connector; Connector is packed in the urceolus; Four boss platforms just are bumped in the groove of four correspondences in the urceolus on the connector cylindrical; When drilling tool drove the rotation of gluing core, the gluing core just drove connector, urceolus rotates together, and had prevented connector phenomenon in relative rotation in urceolus; The hole that six square bolts and 8 correspondences in 8 are arranged on the pressure cap; Be bumped into one of a special spanner in the hole of pressure cap; Borehole jack on the special spanner is gone on the post of interior six square bolts in corresponding pressure cap hole, rotates the other end and just can pressure cap be compressed connector with corresponding screw thread between the urceolus through pressure cap; Four grooves are arranged on the urceolus inner ring; Four boss of correspondence on this groove fit connector, when preventing the rotation of gluing core cup, connector slides relatively in urceolus and damages the plain seal pad; Four blind holes are arranged on the urceolus external diameter; This blind hole cooperates a special stand as a spacer point, can bearing assembly be fallen, and tightens or unload loose pressure cap so that change the gluing core.
Described bearing housing is made up of last lower platen, upper sleeve gasket, last oil sealing pressing plate, last oil seal body, two group of 1000948 bearing, one group of 8148 bearing, shell, one group of 9039248E bearing, central tube, one group of 148 bearing, end flange, last oil sealing; The upper sleeve gasket right-handed thread screws on the central tube; Block upper sleeve gasket and be connected on the central tube by last lower platen, prevent that upper sleeve gasket from throwing off from central tube through bolt; Urceolus is sitting on the upper sleeve gasket, through bolt urceolus and upper sleeve gasket is connected together, and is sealed up the bonding surface of urceolus and upper sleeve gasket by " O " RunddichtringO; Two group of 1000948 bearing, one group of 8148 bearing, one group of 9039248E bearing, one group of 148 bearing are packed in the annular space between shell and the central tube; Top is withstood by upper sleeve gasket; The bottom is blocked by seal and end flange; Lower bottom flange left hand thread screws on the central tube, and is blocked end flange and be connected on the central tube through bolt by last lower platen, prevents that the end flange from throwing off from central tube; Two groups of oil sealings are installed on the last oil seal body, will be gone up oil seal body with shell connects together, realize the rotatory sealing between oil seal bodies and the upper sleeve gasket through two groups of oil sealings by bolt; Adopt one group of 9039248E bearing that the supporting capacity of bearing assembly is strengthened greatly, adopt two group of 1000948 bearing and one group of 148 bearing that the ability of righting of bearing assembly is strengthened, effectively protect seal.
Described seal by last terminal pad, go up the movable sealing body, go up oil sealing, seal receptacle, down the static seal body, down movable sealing body, bolt, down oil sealing, sealing shroud, bearing pin, spring, go up the static seal body and form; Last terminal pad will go up the movable sealing body through screw and sealing shroud connects together, and the movable sealing body is driven by central tube with sealing shroud rotate; Following movable sealing body is connected on the sealing shroud through screw, the movable sealing body is driven by central tube with sealing shroud rotate; Seal receptacle is connected on the shell through bolt, makes that seal receptacle is with the shell transfixion at work; Last static seal body is installed in the seal receptacle with following static seal body, and several bearing pins are installed in the seal receptacle, and bearing pin makes that going up the static seal body can only move up and down with following static seal body in seal receptacle, and can not in seal receptacle, rotate; Several springs are installed on the bearing pin in the seal receptacle, and spring makes the sealing surface of going up static seal body and following static seal body touch the sealing surface of movable sealing body and following movable sealing body all the time, realizes mechanical seal; Oil sealing on the seal receptacle upper end is installed two groups, oil sealing under a group is adorned in the seal receptacle lower end, makes seal receptacle and last movable sealing body and following movable sealing body realize rotatory sealing; Several bearing pins penetrate in the corresponding hole of seal receptacle with the corresponding last lower spring that inserts bearing pin; The acting force of the spring that the static seal body equates with following static seal body maintenance in the acquisition; So both guaranteed that last static seal body and following static seal body did not rotate with seal receptacle; Make that again the mechanical seal group has equal wear extent up and down, the life-span of prolonged mechanical sealing;
Three flow of lubricant circulation passage are arranged on the described shell; Lubrication oil flows in the direction of arrows and flows out, and every passage has only an inlet and an outlet, except that entrance and exit; Other mouths are used greater than 0.4 to 0.7 millimeter steel ball of passage internal diameter and are shut, and realize that passage one advances and one goes out; Two conical surfaces are arranged on the shell cylindrical, guarantee clip and housing chucking and seal up bearing assembly, conical surface angle is respectively c=60 degree, d=30 degree; Two boss of symmetry are arranged on the shell cylindrical, and this boss is stuck in after bearing assembly is seated in housing in the gap slot of clip, prevents that bearing assembly from relatively rotating in housing; The lubrication oil that has certain pressure is injected by snap joint; Flow into shell and seal receptacle annular space through the passage on the shell; Flow into the annular space between seal receptacle and the sealing shroud through several by-pass prots on the seal receptacle again; The pressure medium in the balanced seal external well on the one hand, lubricating mechanical sealing end surface and keep the thrust of mechanical seal on the other hand, and allow lubrication oil with pressure the slight seal outside that leaks into to be arranged through mechanical seal end surface.
The installation of under balance pressure drilling rotating control assembly and operation: the lower part of frame flange is connected through ring gasket on the annular preventer of oil drilling well head, realizes the sealing and the connection of the annular preventer of housing and oil drilling well head; Clip is opened in the fluid cylinder elongation, and bearing assembly is seated in and is embedded in the housing on the sealing delta-ring, realizes the sealing between bearing assembly and housing, closes fluid cylinder, and two groups of breaker bolts tighten up and down, and clip firmly is stuck in bearing assembly in the housing; When the drilling tool rotary drilling; The last lower glue core of embracing drilling tool in the bearing assembly rotates with drilling tool; The central tube, the sealing of motivation tool that drive simultaneously in the bearing assembly are rotated together; The shell of housing, clip, bearing assembly and static seal then do not change with oil drilling wellhead assembly fixed static when drilling tool rotates.
The present invention has the following advantages: 1. this device is an overall compact formula cylindrical structure; Be of a size of 780 millimeters of maximum gauges; 1450 millimeters of overall heights are suitable for the under balance pressure drilling of static pressure less than 35MPa, dynamic pressure 17.5MPa, are suitable for five and half and reach following drilling rod use; 2. this device be install simple and convenient, manipulate flexibly, volume is little in light weight, do not need crane when installing and using in the well site, can directly just can accomplish and install and dismounting with pneumatic puffer on the rig floor; When 3. this device is applied to under-balance drilling operation, can discern and develop oil-gas Layer directly, effectively, reliably, timely, store up in the success rate of raising prospect pit and the raising the output of development well; Help in the overall process of drilling well, effectively protecting environment; Improve drilling speed, prolong and use bit life; Stop or to reduce down-holes such as leakage, differential sticking complicated; Can carry out measuring while drilling to payzone; Can effectively avoid the generation of gas blowout accident; Shorten exploration cycle, improve exploration efficiency.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the package assembly sketch map of Fig. 1.
Fig. 3 is housing and the clamp connection structural representation of Fig. 1.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is the sealing delta-ring sketch map of Fig. 1.
Fig. 6 is the clip sketch map of Fig. 1.
Fig. 7 is the sectional view of Fig. 6.
Fig. 8 is Fig. 1 housing sketch map.
Fig. 9 is the sectional view of Fig. 8.
Figure 10 is the bearing assembly sketch map of Fig. 1.
Figure 11 is the gluing core cup sketch map of Figure 10.
Figure 12 is the connector sketch map of Figure 10.
Figure 13 is the sectional view of Figure 12.
Figure 14 is the pressure cap sketch map of Figure 10.
Figure 15 is the urceolus sketch map of Figure 10.
Figure 16 is the sectional view of Figure 15.
Figure 17 is the bearing housing sketch map of Figure 10.
Figure 18 is the seal sketch map of Figure 10.
Figure 19 is the shell sketch map of Figure 17.
Figure 20 is the sectional view of Figure 19.
Among the figure: 1. bearing assembly, 2. clip, 3. housing, 4. fluid cylinder, 5. snap joint, 6. sealing delta-ring, 7. breaker bolt; 8. big pin, 9 hydraulic pin, 10. baffle plate, 11. otic placodes, 12. gluing core cups, 13. bearing housings, 14. seals; 15. lower glue core, 16. drop handle covers, 17. pressure caps, 18. plain seal pads, 19. urceolus, 20. connectors, 21. gluing cores; 22. connecting bolt, six square bolts in 23., lower platen on 24., 25.O RunddichtringO, 26. upper sleeve gaskets, oil sealing pressing plate on 27., oil seal body on 28.; 29.1000948 bearing, 30.8148 bearings, 31. shells, 32.9039248E bearing, 33. central tubes, 34.148 bearings, 35. end flanges; 36. last oil sealing, terminal pad on 37., movable sealing body on 38., oil sealing on 39., 40. seal receptacles, 41. times static seal bodies, 42. times movable sealing bodies; 43. bolt, 44. times oil sealings, 45. sealing shrouds, 46. bearing pins, 47. springs, static seal body on 48..
The specific embodiment
Like Fig. 1, shown in 2; This rotating control assembly is made up of bearing assembly 1, clip 2, housing 3, fluid cylinder 4; Two groups of fluid cylinders 4 are installed on the housing 3, and 2 one-tenth pair of right and left of clip claim that inset type is installed in housing 3 upper ends, and bearing assembly 1 is installed on the housing 3 through sealing delta-ring 6.
In the under balance pressure drilling rotating control assembly of the present invention, the sealing delta-ring is as shown in Figure 5, and circle is the conical surface in the sealing delta-ring 6, and angle is the a=30 degree, and sealing delta-ring 6 is embedded in the holddown groove of housing 3 closely.
In the under balance pressure drilling rotating control assembly of the present invention, clip is like Fig. 6, shown in 7, and the interior circle of clip 2 is round table surface, and a conical surface is arranged between two round table surface, this conical surface angle b=30 degree; One end of last hoop has pin-and-hole, and clip 2 is installed on the housing 3 through big pin 8, and clip 2 welding-ons have otic placode, and the fluid cylinder pin 9 through fluid cylinder is connected on the fluid cylinder 4; Each welding-on one boss on 2 of clips, the boss of left clip welding-on is a screwed hole, right clip welding-on is a circular hole; When fluid cylinder 4 withdrawal clips 2 are bumped in the housing 3; Clip protruding breaker bolt 7 in the left and right sides connects together, clip is stuck on the housing firmly, clip 2 can only stretch make clip radially inset type leave housing 3; And clip 2 is moved up and down at shell, like Fig. 3, shown in 4.
In the under balance pressure drilling rotating control assembly of invention, housing is like Fig. 8, shown in 9, and respectively there is square groove the front and back of shell portion, are used for being bumped into clip; About the right part welding-on of housing 3 has, pin-and-hole is arranged, on the boss through pin-and-hole jointing clip 2; There are two side flanges of size at the middle part of housing 3 for all directions portion welding-on, and big flange connects the flap type that surges, little flange power sensor, and four otic placodes 11 with holes that have that are distributed on housing 3 middle parts are installed the guy wire body; The front and back of housing 3 respectively are welded with baffle plate 10, have boss restriction card to open the position on the baffle plate 10.
In the under balance pressure drilling rotating control assembly of invention; Bearing assembly is shown in figure 10; Become 1 to form by gluing core cup 12, bearing housing 13, seal 14, lower glue core 15; Cup 12 is connected lower glue core 15 whole formation bearing bearing assemblies 1 through bearing housing 13 and is provided with three groups of snap joints 5 and passage with seal 14; The road of this snap joint 5 leads to bearing housing 13, and one-in-and-one-out is used to annotate lubrication oil, lubrication oil injection bearing axle box bearing case 13 come out after supercooling, to reinject in the bearing housing 13 constantly reciprocation cycle oil keeper and oil sealing; The logical seal 14 of another group passage of this snap joint 5; Profit is gone into seal 14 backs keep certain pressure; Power in the one side balanced seal external well; Lubricating mechanical sealing end surface and keep the thrust of mechanical seal on the other hand, and allow lubrication oil with pressure the slight seal outside that leaks into to be arranged through mechanical seal end surface.
Shown in figure 11; Described gluing core cup 12 is made up of drop handle cover 16, pressure cap 17, plain seal pad 18, urceolus 19, connector 20, gluing core 21, connecting bolt 22; Drop handle cover 16 is through being threaded on the connector 20; Connector 20 connects gluing core 21 closely, has the groove of four inclinations that the kelly bar driver is installed on the drop handle cover 16; The upper surface of connector 20 is pressed on the end face of urceolus 19 through plain seal pad 18, tightens pressure cap 17 connector 20, plain seal pad 18, urceolus 19 are pushed down, and realizes the sealing of 19 of connector 20 and urceolus; Like Figure 12, shown in 13; Four boss platforms are arranged on the maximum cylindrical of connector 20; Connector 20 is packed in the urceolus 19, and four boss platforms just are bumped in the groove of urceolus 19 interior four correspondences on connector 20 cylindricals, when drilling tool drives 21 rotations of gluing core; Gluing core 21 just drives connector 20, urceolus 19 and rotates together, and has prevented connector 20 phenomenon in relative rotation in urceolus 19; Shown in figure 14; The hole that six square bolts 23 and 8 correspondences in 8 are arranged on the pressure cap 17; Be bumped into one of a special spanner in the hole of pressure cap 17; Borehole jack on the special spanner is gone on the post of interior six square bolts 23 in corresponding pressure cap 17 holes, rotates the other end and just can pressure cap 17 be compressed connector 20 with corresponding screw thread between the urceolus 19 through pressure cap 17; Like Figure 15, shown in 16, four grooves are arranged, four boss of correspondence on this groove fit connector 20 on urceolus 19 inner rings; When preventing 12 rotations of gluing core cup; Connector 20 slides relatively in urceolus 19 and damages plain seal pad 18, and four blind holes are arranged on urceolus 19 external diameters, and this blind hole cooperates a special stand as a spacer point; Can bearing assembly 1 be fallen, tighten or unloaded loose pressure cap 17 so that change gluing core 21.
Shown in figure 17; Described bearing housing 13 by last lower platen 24, upper sleeve gasket 26, go up oil sealing pressing plate 27, go up oil seal body 28, two group of 1000948 bearing 29, one group of 8148 bearing 30, shell 31, one group of 9039248E bearing 32, central tube 33, one group of 148 bearing 34, end flange 35, go up oil sealing 36 and form; Upper sleeve gasket 26 right-handed threads screw on the central tube 33; Block upper sleeve gasket 26 and be connected on the central tube 33 by last lower platen 24, prevent that upper sleeve gasket 26 from throwing off from central tube 33 through bolt; Urceolus 19 is sitting on the upper sleeve gasket 26, through bolt 22 urceolus 19 and upper sleeve gasket 26 is connected together, and is sealed up the bonding surface of urceolus 19 and upper sleeve gasket 26 by " O " RunddichtringO 25; Two group of 1000948 bearing 29, one group of 8148 bearing 30, one group of 9039248E bearing 32, one group of 148 bearing 34 are packed in the annular space between shell 31 and the central tube 33; Top is withstood by upper sleeve gasket 26; The bottom is blocked by seal 14 and end flange 35; The blue left hand threads of lower bottom method 35 screw on the central tubes 33, and are blocked end flange 35 and be connected on the central tube 33 through bolt by last lower platen 24, prevent that the end flange 35 from throwing off from central tube 33; Two groups of oil sealings 36 are installed on the last oil seal body 28, will be gone up oil seal body 28 by bolt and connect together, realize going up the rotatory sealing between oil seal body 28 and the upper sleeve gasket 26 through two groups of oil sealings 36 with shell 31; Adopt one group of 9039248E bearing 32 that the supporting capacity of bearing assembly 1 is strengthened greatly; Adopt two group of 1000948 bearing 29 and one group of 148 bearing that the ability of righting of bearing assembly 1 is strengthened, effectively protected seal.
Shown in figure 18; Described seal by last terminal pad 37, go up movable sealing body 38, go up oil sealing 39, seal receptacle 40, down static seal body 41, down movable sealing body 42, bolt 43, down oil sealing 44, sealing shroud 45, bearing pin 46, spring 47, go up static seal body 48 and form; Last terminal pad 37 will be gone up movable sealing body 38 through screw and connect together with sealing shroud 45, movable sealing body 38 driven by central tube 33 with sealing shroud 45 rotate; Following movable sealing body 42 is connected on the sealing shroud 45 through screw, movable sealing body 42 is driven by central tube 33 with sealing shroud 45 rotate; Seal receptacle 40 is connected on the shell 31 through bolt 43, makes that seal receptacle 40 is with the shell transfixion at work; Last static seal body 48 is installed in the seal receptacle 40 with following static seal body 41, and several bearing pins 46 are installed in the seal receptacle 40, and bearing pin makes that going up static seal body 48 can only move up and down with following static seal body 41 in seal receptacle 40, and can not in seal receptacle 40, rotate; Several springs 47 are installed on the bearing pin in the seal receptacle 40, and spring makes the sealing surface of going up static seal body 48 and following static seal body 41 touch the sealing surface of movable sealing body 38 and following movable sealing body 42 all the time, realizes mechanical seal; Oil sealing 39 on two groups is installed in seal receptacle 40 upper ends, and oil sealing 44 under a group is installed in seal receptacle 40 lower ends, makes seal receptacle 40 and last movable sealing body 38 and following movable sealing body 42 realize rotatory sealing; Several bearing pins 46 penetrate in the hole of seal receptacle 40 correspondences with the corresponding last lower spring 47 that inserts bearing pin 46; The acting force of the spring that static seal body 48 equates with following static seal body 41 maintenances in the acquisition; So both guaranteed that last static seal body 48 did not rotate with seal receptacle 40 with following static seal body 41; Make that again the mechanical seal group has equal wear extent up and down, the life-span of prolonged mechanical sealing;
Like Figure 19, shown in 20; Three flow of lubricant circulation passage are arranged on the described shell 31; Lubrication oil flows in the direction of arrows and flows out, and every passage has only an inlet and an outlet, except that entrance and exit; Other mouths are used greater than 0.4 to 0.7 millimeter steel ball of passage internal diameter and are shut, and realize that passage one advances and one goes out; Two conical surfaces are arranged, for guaranteeing clip 2 and housing 3 chuckings and seal up bearing assembly 1 that conical surface angle is respectively c=60 degree, d=30 degree on shell 31 cylindricals; Two boss of symmetry are arranged on shell 31 cylindricals, and this boss is stuck in the gap slot of clip 2 after bearing assembly 1 is seated in housing 3, prevents that bearing from relatively rotating in housing 3 for total 1 one-tenth; The lubrication oil that has certain pressure is injected by snap joint 5; Flow into shell 31 and seal receptacle 40 annular spaces through the passage on the shell 31; Flow into the annular space between seal receptacle 40 and the sealing shroud 45 through several by-pass prots on the seal receptacle 40 again; The pressure medium in balanced seal body 14 outer well on the one hand, lubricating mechanical sealing end surface and keep the thrust of mechanical seal on the other hand, and allow lubrication oil with pressure slight seal 14 outsides that leak into to be arranged through mechanical seal end surface.
Underbalance is crept into the installation and the operation of rotating control assembly: the lower part of frame flange is connected through ring gasket on the annular preventer of oil drilling well head, realizes the sealing and the connection of the annular preventer of housing and oil drilling well head; Clip is opened in the fluid cylinder elongation, and bearing assembly is seated in and is embedded in the housing on the sealing delta-ring, realizes the sealing between bearing assembly and housing, closes fluid cylinder, and two groups of breaker bolts tighten up and down, and clip firmly is stuck in bearing assembly in the housing; When the drilling tool rotary drilling, the last lower glue core of embracing drilling tool in the bearing assembly rotates with drilling tool, and the central tube, the sealing of motivation tool that drive simultaneously in the bearing assembly are rotated together; The shell of housing, clip, bearing assembly and static seal then do not change with oil drilling wellhead assembly fixed static when drilling tool rotates.
Claims (6)
1. under balance pressure drilling rotating control assembly; This device is made up of bearing assembly (1), clip (2), housing (3), fluid cylinder (4); Housing (3) is gone up two groups of fluid cylinders (4) is installed; Clip (2) becomes the pair of right and left inset type to be installed in housing (3) upper end, and bearing assembly (1) is installed on the housing (3) through sealing delta-ring (6); Open left and right sides clip (2) through the elongation of fluid cylinder (4); Bearing assembly (1) is seated in the housing (3) through sealing delta-ring (6); Close left and right sides clip (2) through the withdrawal of fluid cylinder (4); Bearing assembly (1) is installed on the housing (3) firmly, and sealing delta-ring (6) seals up the sealing surface between bearing assembly (1) and the housing (3), fastening two groups of breaker bolts (7) up and down; Circle is the conical surface in the sealing delta-ring (6), and angle is the a=30 degree, and sealing delta-ring (6) is embedded in the holddown groove of housing (3) closely; Bearing assembly (1) is made up of gluing core cup (12), bearing housing (13), seal (14), lower glue core (15); Gluing core cup (12) is connected the whole formation of lower glue core (15) bearing assembly (1) through bearing housing (13) with seal (14), bearing assembly (1) is provided with three groups of snap joints (5) and passage, and two groups of passages of this snap joint (5) lead to bearing housing (13); It is characterized in that: the interior circle of clip (2) is a round table surface, and a conical surface is arranged between two round table surface, this conical surface angle b=30 degree; One end of clip has pin-and-hole, and clip (2) is installed on the housing (3) through big pin (8), and clip (2) other end welding-on has otic placode, and the fluid cylinder pin (9) through fluid cylinder is connected on the fluid cylinder (4); Each welding-on one boss on clip (2) upper and lower end face; The boss of left side clip welding-on is a screwed hole, and the boss of right clip welding-on is a circular hole, when fluid cylinder (4) withdrawal clip (2) is bumped in the housing (3); Left and right sides clip boss connects together through breaker bolt (7), and clip is stuck on the housing firmly.
2. under balance pressure drilling rotating control assembly according to claim 1 is characterized in that: respectively there is square groove the front and back on housing (3) top, are used for being bumped into clip; The right part welding-on of housing (3) has two boss up and down, pin-and-hole is arranged, through pin-and-hole jointing clip (2) on the boss; The middle part of housing (3) is an eight aspect, and the middle part welding-on has two side flanges of size, and flange connects the flap type that surges greatly, and little flange connects pressure sensor, and four otic placodes with holes (11) that have that are distributed on housing (3) middle part are installed guy wire correction housing; The front and back of housing (3) respectively are welded with baffle plate (10), and boss restriction clip (2) enable possition is arranged on the baffle plate (10).
3. under balance pressure drilling rotating control assembly according to claim 1; It is characterized in that: gluing core cup (12) is made up of drop handle cover (16), pressure cap (17), plain seal pad (18), urceolus (19), connector (20), gluing core (21), connecting bolt (22); Drop handle cover (16) is through being threaded on the connector (20); Connector (20) connects gluing core (21) closely, has the groove of four inclinations that the kelly bar driver is installed on the drop handle cover (16); The upper surface of connector (20) is pressed on the end face of urceolus (19) through plain seal pad (18), tightens pressure cap (17) connector (20), plain seal pad (18), urceolus (19) are pushed down body that is tightly connected (20) and urceolus (19); Four boss platforms are arranged on the maximum cylindrical of connector (20), and connector (20) is packed in the urceolus (19), and four boss platforms just are bumped in the groove of interior four correspondences of urceolus (19) on connector (20) cylindrical; The hole that six square bolts (23) and 8 correspondences in 8 are arranged on the pressure cap (17), pressure cap (17) compresses connector (20) with corresponding screw thread between the urceolus (19) through pressure cap (17); On urceolus (19) inner ring four grooves are arranged, this groove fit connector (20) is gone up four corresponding boss; On urceolus (19) external diameter four blind holes are arranged.
4. under balance pressure drilling rotating control assembly according to claim 1; It is characterized in that: bearing housing (13) is made up of last lower platen (24), upper sleeve gasket (26), last oil sealing pressing plate (27), last oil seal body (28), two group of 1000948 bearing (29), one group of 8148 bearing (30), shell (31), one group of 9039248E bearing (32), central tube (33), one group of 148 bearing (34), end flange (35), last oil sealing (36); Upper sleeve gasket (26) right-handed thread screws on the central tube (33), is blocked upper sleeve gasket (26) and is connected on the central tube (33) through bolt by last lower platen (24); Urceolus (19) is sitting on the upper sleeve gasket (26), through bolt (22) urceolus (19) and upper sleeve gasket (26) is connected together, and is sealed up the bonding surface of urceolus (19) and sealing shroud (26) by " O " RunddichtringO (25); Two group of 1000948 bearing (29), one group of 8148 bearing (30), one group of 9039248E bearing (32), one group of 148 bearing (34) are packed in the annular space between shell (31) and the central tube (33); Top is withstood by upper sleeve gasket (26); The bottom is blocked by seal (14) and end flange (35); Lower bottom flange (35) left hand thread screws on the central tube (33), and is blocked end flange (35) and be connected on the central tube (33) through bolt by last lower platen (24); Last oil seal body (28) is gone up two groups of oil sealings (36) is installed, and will go up oil seal body (28) by bolt and connect together with shell (31).
5. under balance pressure drilling rotating control assembly according to claim 1; It is characterized in that: seal by last terminal pad (37), go up movable sealing body (38), go up oil sealing (39), seal receptacle (40), down static seal body (41), down movable sealing body (42), bolt (43), down oil sealing (44), sealing shroud (45), bearing pin (46), spring (47), go up static seal body (48) and form; Last terminal pad (37) will be gone up movable sealing body (38) through screw and connect together with sealing shroud (45); Following movable sealing body (42) is connected on the sealing shroud (45) through screw; Seal receptacle (40) is connected on the shell (31) through bolt (43); Last static seal body (48) is contained in the seal receptacle (40) with following static seal body (41), and several bearing pins (46) are installed in the seal receptacle (40); Several springs (47) are installed on the bearing pin in the seal receptacle (40), and two groups of oil sealings (39) are installed in seal receptacle (40) upper end, and one group of oil sealing (44) is adorned in seal receptacle (40) lower end.
6. under balance pressure drilling rotating control assembly according to claim 4; It is characterized in that: three flow of lubricant circulation passage are arranged on the shell (31); Every passage has only an inlet and an outlet, and other mouths on every passage are used greater than 0.4 to 0.7 millimeter steel ball of passage internal diameter and shut; On shell (31) cylindrical two conical surfaces are arranged, conical surface angle is respectively c=60 degree, d=30 degree; Two boss of symmetry are arranged on shell (31) cylindrical, and this boss may be stuck in the gap slot between clip (2) after bearing assembly (1) is seated in housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101349166A CN101182760B (en) | 2007-10-29 | 2007-10-29 | Under balance drilling revolution control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101349166A CN101182760B (en) | 2007-10-29 | 2007-10-29 | Under balance drilling revolution control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101182760A CN101182760A (en) | 2008-05-21 |
| CN101182760B true CN101182760B (en) | 2012-07-18 |
Family
ID=39448173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101349166A Active CN101182760B (en) | 2007-10-29 | 2007-10-29 | Under balance drilling revolution control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101182760B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444390A (en) * | 2010-10-11 | 2012-05-09 | 李相方 | Emergency rescuing device for incontrollable blowout |
| CN102747978A (en) * | 2012-07-13 | 2012-10-24 | 大庆井泰石油工程技术股份有限公司 | Wellhead centering device |
| US9540898B2 (en) | 2014-06-26 | 2017-01-10 | Sunstone Technologies, Llc | Annular drilling device |
| CN104708285B (en) * | 2015-03-17 | 2017-01-11 | 西南石油大学 | Rotary control head shell and manufacturing method thereof |
| CN105781524A (en) * | 2016-01-07 | 2016-07-20 | 马志 | Whole-working-condition annulus test wellhead device |
| CN106639961B (en) * | 2017-02-10 | 2019-05-21 | 江苏卫东机械有限公司 | The closed rotating blowout preventer of under balance pressure drilling environmental protection |
| CN109577903B (en) * | 2018-12-27 | 2024-04-09 | 中国石油天然气集团有限公司 | Rotary assembly of rotary blowout preventer easy to disassemble and assemble |
| CN109763791A (en) * | 2019-02-27 | 2019-05-17 | 杨道财 | A kind of well head anti-rotation device |
| CN112049598A (en) * | 2020-09-09 | 2020-12-08 | 中国石油天然气集团有限公司 | Novel large shell device for rotary control head |
| CN112593891B (en) * | 2020-12-28 | 2022-05-31 | 雅安万利橡塑密封技术有限责任公司 | Blowout prevention box rubber core sealing assembly |
| CN112943149B (en) * | 2021-01-22 | 2022-05-03 | 四川宏华石油设备有限公司 | Top drive internal blowout preventer switching device |
| CN116241209B (en) * | 2023-05-09 | 2023-07-21 | 成都添盛钻采设备有限公司 | Compact rotary blowout preventer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154448A (en) * | 1977-10-18 | 1979-05-15 | Biffle Morris S | Rotating blowout preventor with rigid washpipe |
| US4949796A (en) * | 1989-03-07 | 1990-08-21 | Williams John R | Drilling head seal assembly |
| US5022472A (en) * | 1989-11-14 | 1991-06-11 | Masx Energy Services Group, Inc. | Hydraulic clamp for rotary drilling head |
| CN200955370Y (en) * | 2006-07-12 | 2007-10-03 | 新疆石油管理局钻井工艺研究院 | Rotary control head for drilling well |
| CN201155311Y (en) * | 2007-10-29 | 2008-11-26 | 金湖卫东机械有限公司 | Under balance drilling rotating control device |
-
2007
- 2007-10-29 CN CN2007101349166A patent/CN101182760B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154448A (en) * | 1977-10-18 | 1979-05-15 | Biffle Morris S | Rotating blowout preventor with rigid washpipe |
| US4949796A (en) * | 1989-03-07 | 1990-08-21 | Williams John R | Drilling head seal assembly |
| US5022472A (en) * | 1989-11-14 | 1991-06-11 | Masx Energy Services Group, Inc. | Hydraulic clamp for rotary drilling head |
| CN200955370Y (en) * | 2006-07-12 | 2007-10-03 | 新疆石油管理局钻井工艺研究院 | Rotary control head for drilling well |
| CN201155311Y (en) * | 2007-10-29 | 2008-11-26 | 金湖卫东机械有限公司 | Under balance drilling rotating control device |
Non-Patent Citations (1)
| Title |
|---|
| 康晓雷.浅谈旋转控制头的应用及发展趋势.《石油机械》.2000,第28卷(第6期),57-60. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101182760A (en) | 2008-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101182760B (en) | Under balance drilling revolution control device | |
| US5647444A (en) | Rotating blowout preventor | |
| RU2468184C2 (en) | Bearing assembly system with integral distribution of lubrication, and drilling equipment of wells, which contains that system | |
| US20130068477A1 (en) | Apparatus and method for facilitating the connection of tubulars using a top drive | |
| US20040011531A1 (en) | Apparatus and method for facilitating the connection of tubulars using a top drive | |
| CN106639961B (en) | The closed rotating blowout preventer of under balance pressure drilling environmental protection | |
| CN106050182B (en) | A kind of enhanced synchronous rotary preventer | |
| CN111425162A (en) | Large-drift-diameter single-double quick-change rotary blowout preventer assembly | |
| CN201155311Y (en) | Under balance drilling rotating control device | |
| CN204984334U (en) | Rotary blowout preventer | |
| CN114059930A (en) | Controllable drill rod device for directional drilling of drill bit | |
| CN103573206B (en) | Rotary assembly of active sealing type rotary blowout preventer | |
| CN218624152U (en) | Rotary sealing wellhead device for test | |
| CN108955973B (en) | Dynamic torque online detection device and detection method | |
| CN201496025U (en) | Hydraulic rotary well plugging device | |
| CN209041555U (en) | A kind of permanent magnet direct-driven mechanical seal driving device | |
| CN209053596U (en) | A kind of water brake vertical type transmission surface drive | |
| CN203705257U (en) | Flange tensioning device for marine riser testboard | |
| CN109915046B (en) | Rotary seal loading process and device for minor repair operation | |
| CN219158918U (en) | Drilling device for coal mine omnibearing automatic drilling machine | |
| CN107191151B (en) | Quick centring righting apparatus for work | |
| CN207453916U (en) | The quick unfreezing apparatus for work of novel multi-use | |
| CN114109291A (en) | Low-height anti-jacking anti-twisting pressurizing clamping device and method | |
| CN209278240U (en) | A kind of shaft type sealing swivel joint | |
| CA2967606C (en) | Seal housing and related apparatuses and methods of use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 211600 Jinhu County Industrial Park, Jiangsu, Huaian Patentee after: JIANGSU WEIDONG MACHINERY CO., LTD. Address before: 211600 No. three, industrial park, Jinhu County, Jiangsu, Huaian Patentee before: Jinhu Weidong Machinery Ltd. |