CN102518418B - Unlimited layer fracturing process - Google Patents
Unlimited layer fracturing process Download PDFInfo
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- CN102518418B CN102518418B CN201110441472.7A CN201110441472A CN102518418B CN 102518418 B CN102518418 B CN 102518418B CN 201110441472 A CN201110441472 A CN 201110441472A CN 102518418 B CN102518418 B CN 102518418B
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Abstract
The invention relates to the technical field of oil and gas field fracturing and provides an unlimited layer fracturing process, which comprises the following steps: manufacturing a fracturing process pipe column, connecting a guiding plug, a seal ball seat, a first-stage unlimited layer fracturing sliding sleeve, a packer, a pipe column telescopic compensator, a second-stage unlimited layer fracturing sliding sleeve, a packer, a pipe column telescopic compensator to an n-stage unlimited layer fracturing sliding sleeve, a packer with a hanger from bottom to top in sequence into a single pipe column; delivering the single pipe column to a position to be sealed; sealing all the packers at a time; then sealing the hanger; throwing a first-stage ball arm or a ball; opening the first-stage unlimited layer fracturing sliding sleeve; fracturing a first layer; throwing a second-stage ball arm or a ball; opening the second-stage unlimited layer fracturing sliding sleeve; fracturing a second layer and the like until opening the n-stage unlimited layer fracturing sliding sleeve and fracturing an n<th> layer, wherein n is a fracturing stage number. The unlimited layer fracturing process has the advantages that the pipe column has a simple structure, the fracturing construction period is short, the fracturing stage number is unlimited and the reliability is high.
Description
Technical field
The present invention relates to oil-gas field fracturing technical field, a kind of lamination of not limitting splits process specifically.
Background technology
Oil field multistage pressure break (acidifying, acid fracturing) generally adopts the mode staged fracturing of mechanical pitching at present, therefore every one-level sliding sleeve internal diameter and pressure break ball are all not identical, from bottom to top, bulb diameter increases step by step, the maximum internal diameter that can not surpass epimere instrument, not only device is complicated, and operating efficiency is low, construction risk is high, and has the limited shortcoming of the pressure break number of plies.
Summary of the invention
Object of the present invention is exactly in order to overcome above-mentioned the deficiencies in the prior art part, provides a kind of low permeability oil field one-trip string of realizing not limit lamination to split process, and its tubular column structure is simple, and the pressing crack construction cycle is short, does not limit the pressure break number of plies, and reliability is high.
To achieve these goals, a kind of lamination of not limitting provided by the invention splits process, comprises the steps:
(1) make fracturing technology tubing string, do not limit a layer fracturing sliding bush, packer, pipe column expansion compensator, 2 grades not limit a layer fracturing sliding bush, packer, pipe column expansion compensator, n level not to limit a layer fracturing sliding bush, packer, hanger to be in turn connected into one-trip string from bottom to top guiding plug, setting ball seat, 1 grade, wherein, n is the pressure break number of plies;
(2) one-trip string of making by step (1) is delivered to desired setting position, once set all packers, then set hanger, throw 1 grade of club or ball, open 1 grade and do not limit a layer fracturing sliding bush, the 1st layer of pressure break, throw 2 grades of clubs or ball, open 2 grades and do not limit a layer fracturing sliding bush, the 2nd layer of pressure break, the like, until open n level, do not limit a layer fracturing sliding bush, pressure break n layer, wherein, n is the pressure break number of plies.
In technique scheme, layer fracturing sliding bush of not limitting adopting in the described tubing string of step (1) is automatically controlled fracturing sliding bush, comprise outer cylinder sheath, inner sliding sleeve and signal ball, described outer cylinder sheath is by top connection, center tap, three parts of lower contact are socketed to form in turn, in top connection, be provided with runner hole, in described signal ball, be provided with for sending the sender unit of particular ip address, between described top connection and inner sliding sleeve, be provided with sealed chamber, hydraulic oil is housed in chamber in advance, sealing chamber is provided with relief hole, described center tap is provided with for controlling the electromagnetic valve of relief hole folding and the electric control gear of electromagnetic valve, described top connection inner side is provided with a valve plate by torsionspring, the electric control gear of described electromagnetic valve comprises the antenna for receiving IP address signal, pre-stored data processing unit, the battery that has particular ip address, the signal output part of described antenna is connected with data processing unit, and the control signal output of data processing unit is connected with electromagnetic valve, its working method is for when signal ball moves in sliding sleeve, the IP address that antenna detection is sent to signal ball, contrast with the IP address being stored on data processing unit, if consistent, connect electromagnetic valve, valve core of the electromagnetic valve moves, open relief hole, under fluid pressure in tubing string, liquid in sealed chamber between inner sliding sleeve and top connection is discharged from, inner sliding sleeve down sliding, when inner sliding sleeve slides, valve plate is under the effect of torsionspring, approximately 90 ° of automatic rotations, contact with the upper surface of inner sliding sleeve, under pressure-acting, form sealing in the above, the pressure break of simultaneously exposing in top connection is used runner hole, now can construct to stratum, after construction finishes, if stratum is fuel-displaced or gas, under the pressure on stratum, can automatically make valve plate 2 Unscrews, gas below or liquid can move above.
In technique scheme, in the described tubing string of step (1), every grade of employing does not limit its type of layer fracturing sliding bush, size, specification consistent, be only that the IP address that stores in the electromagnetic valve electric control gear of every grade of automatically controlled fracturing sliding bush is inconsistent, and coordinate different signal balls to use.
In technique scheme, in the described tubing string of step (1), every grade adopts same packer, and its packer type can be compression type open hole packer, inflatable formation packer or meet oil, water inflatable formation packer.
The present invention does not limit lamination to split process, its tubular column structure is simple, easy to use, overcome the deficiency of current technology ball-throwing type sliding sleeve, fracturing effect and operating efficiency have been improved, solved the limited problem of the pressure break number of plies, can meet oil gas field and in fracturing yield increasing process, use a pipe string to complete the specific aim pressure break to different target zone positions.
Accompanying drawing explanation
Fig. 1 is that the present invention does not limit lamination to split the working state schematic representation of process.
Fig. 2 is the structural representation of embodiment of the present invention closed condition while using automatically controlled fracturing sliding bush.
Fig. 3 is the structural representation of embodiment of the present invention open mode while using automatically controlled fracturing sliding bush.
Wherein: 1. plug leads, 2. setting ball seat, 3. do not limit a layer fracturing sliding bush for 1 grade, 4. packer, 5. do not limit a layer fracturing sliding bush for 2 grades, 6. packer, 7. do not limit a layer fracturing sliding bush for 3 grades, 8. packer, 9. hanger, 10. 1 grade of signal ball, 11. 2 grades of signal balls, 12. 3 grades of signal balls, 13. top connections, 14. valve plates, 15. center taps, 16. lower contacts, 17. inner sliding sleeves, 18. sealed chamber, 19. electromagnetic valves, the electric control gear of 20. electromagnetic valves, 21. relief holes, 22. signal balls, 23. pressure breaks are used runner hole.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of lamination of not limitting provided by the invention splits process, and 3 layers of the pressure breaks of take are example, comprise the steps:
(1) make fracturing technology tubing string, do not limit layer fracturing sliding bush 3, packer 4, pipe column expansion compensator, 2 grades not limit layer fracturing sliding bush 5, packer 6, pipe column expansion compensator, 3 grades not limit layer fracturing sliding bush 7, packer 8, hanger 9 to be in turn connected into one-trip string from bottom to top 2,1 grade of guiding plug 1, setting ball seat;
(2) one-trip string of making by step (1) is delivered to desired setting position, once set all packers, then set hanger 9, throw 1 grade of signal ball 10, open 1 grade and do not limit layer fracturing sliding bush 3, the 1st layer of pressure break, throws 2 grades of signal balls 11, opens 2 grades and does not limit layer fracturing sliding bush 5, the 2nd layer of pressure break, throw 3 grades of signal balls 12, open 3 grades and do not limit layer fracturing sliding bush 7, the 3rd layer of pressure break.
If pressure break number of plies n layer, the like, until open n level, do not limit a layer fracturing sliding bush, pressure break n layer.
As Fig. 2, shown in 3, layer fracturing sliding bush of not limitting adopting in the described tubing string of step (1) is automatically controlled fracturing sliding bush, comprise outer cylinder sheath, inner sliding sleeve 17 and signal ball 22, described outer cylinder sheath is by top connection 13, center tap 15, 16 3 parts of lower contact are socketed to form in turn, in top connection 13, be provided with runner hole 23, in described signal ball 22, be provided with for sending the sender unit of particular ip address, between described top connection 13 and inner sliding sleeve 17, be provided with sealed chamber 18, hydraulic oil is housed in chamber in advance, sealing chamber 18 is provided with relief hole 21, described center tap 15 is provided with for controlling the electromagnetic valve 19 of relief hole 21 foldings and the electric control gear 20 of electromagnetic valve, described top connection 13 inner sides are provided with a valve plate 14 by torsionspring, the electric control gear 20 of described electromagnetic valve comprises the antenna for receiving IP address signal, pre-stored data processing unit, the battery that has particular ip address, the signal output part of described antenna is connected with data processing unit, and the control signal output of data processing unit is connected with electromagnetic valve 19, its working method is for when signal ball 22 moves in sliding sleeve, the IP address that antenna detection is sent to signal ball, contrast with the IP address being stored on data processing unit, if consistent, connect electromagnetic valve, electromagnetic valve 19 spools move, open relief hole 21, under fluid pressure in tubing string, liquid in sealed chamber 18 between inner sliding sleeve and top connection is discharged from, inner sliding sleeve 17 down slidings, when inner sliding sleeve 17 slides, valve plate 14 is under the effect of torsionspring, approximately 90 ° of automatic rotations, contact with the upper surface of inner sliding sleeve 17, under pressure-acting, form sealing in the above, the pressure break of simultaneously exposing in top connection is used runner hole 23, now can construct to stratum, after construction finishes, if stratum is fuel-displaced or gas, under the pressure on stratum, can automatically make valve plate 14 Unscrews, gas below or liquid can move above.Wherein, Fig. 2 shows the state of going into the well of automatically controlled sliding sleeve, and sliding sleeve, in closed condition, is not communicated with inside and outside sliding sleeve.Fig. 3 shows the duty of automatically controlled sliding sleeve, and sliding sleeve is in open mode, inside and outside connection.
In technique scheme, in the described tubing string of step (1), every grade of employing does not limit its type of layer fracturing sliding bush, size, specification consistent, be only that the IP address that stores in the electromagnetic valve electric control gear of every grade of automatically controlled fracturing sliding bush is inconsistent, and coordinate different signal balls to use.
In technique scheme, in the described tubing string of step (1), every grade adopts same packer, and its packer type can be compression type open hole packer, inflatable formation packer or meet oil, water inflatable formation packer.
Claims (2)
1. do not limit lamination to split a process, it is characterized in that the method comprises the steps:
(1) make fracturing technology tubing string, do not limit a layer fracturing sliding bush, packer, pipe column expansion compensator, 2 grades not limit a layer fracturing sliding bush, packer, pipe column expansion compensator until n level does not limit a layer fracturing sliding bush, packer, hanger to be in turn connected into one-trip string from bottom to top guiding plug, setting ball seat, 1 grade, wherein, n is that the pressure break number of plies and n are greater than 2, layer fracturing sliding bush of not limitting adopting in described tubing string is automatically controlled fracturing sliding bush, comprise outer cylinder sheath, inner sliding sleeve and signal ball, described outer cylinder sheath is by top connection, center tap, three parts of lower contact are socketed to form in turn, in top connection, be provided with runner hole, in described signal ball, be provided with for sending the sender unit of particular ip address, between described top connection and inner sliding sleeve, be provided with sealed chamber, hydraulic oil is housed in chamber in advance, sealing chamber is provided with relief hole, described center tap is provided with for controlling the electromagnetic valve of relief hole folding and the electric control gear of electromagnetic valve, described top connection inner side is provided with a valve plate by torsionspring, the electric control gear of described electromagnetic valve comprises the antenna for receiving IP address signal, pre-stored data processing unit, the battery that has particular ip address, the signal output part of described antenna is connected with data processing unit, and the control signal output of data processing unit is connected with electromagnetic valve, described automatically controlled fracturing sliding bush working method is for when signal ball moves in sliding sleeve, the IP address that antenna detection is sent to signal ball, contrast with the IP address being stored on data processing unit, if consistent, connect electromagnetic valve, valve core of the electromagnetic valve moves, open relief hole, under fluid pressure in tubing string, liquid in sealed chamber between inner sliding sleeve and top connection is discharged from, inner sliding sleeve down sliding, when inner sliding sleeve slides, valve plate is under the effect of torsionspring, approximately 90 ° of automatic rotations, contact with the upper surface of inner sliding sleeve, under pressure-acting, form sealing in the above, the pressure break of simultaneously exposing in top connection is used runner hole, now constructed in stratum, after construction finishes, if stratum is fuel-displaced or gas, under the pressure on stratum, can automatically make valve plate Unscrew, gas below or liquid can move above, in described tubing string every grade of employing do not limit its type of layer fracturing sliding bush, size, specification consistent, be only that the IP address that stores in the electromagnetic valve electric control gear of every grade of automatically controlled fracturing sliding bush is inconsistent, and coordinate different signal balls to use,
(2) one-trip string of making by step (1) is delivered to desired setting position, once set all packers, then set hanger, throw 1 grade of club or ball, open 1 grade and do not limit a layer fracturing sliding bush, the 1st layer of pressure break, throw 2 grades of clubs or ball, open 2 grades and do not limit a layer fracturing sliding bush, the 2nd layer of pressure break, the like, until open n level, do not limit a layer fracturing sliding bush, pressure break n layer, wherein, n is that the pressure break number of plies and n are greater than 2.
2. a kind of lamination of not limitting according to claim 1 splits process, it is characterized in that: in the described tubing string of step (1), every grade adopts same packer, and its packer type is compression type open hole packer or inflatable formation packer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110441472.7A CN102518418B (en) | 2011-12-26 | 2011-12-26 | Unlimited layer fracturing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110441472.7A CN102518418B (en) | 2011-12-26 | 2011-12-26 | Unlimited layer fracturing process |
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| CN102518418A CN102518418A (en) | 2012-06-27 |
| CN102518418B true CN102518418B (en) | 2014-07-16 |
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| CN201110441472.7A Active CN102518418B (en) | 2011-12-26 | 2011-12-26 | Unlimited layer fracturing process |
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| US8668012B2 (en) | 2011-02-10 | 2014-03-11 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| US8695710B2 (en) | 2011-02-10 | 2014-04-15 | Halliburton Energy Services, Inc. | Method for individually servicing a plurality of zones of a subterranean formation |
| US8893811B2 (en) | 2011-06-08 | 2014-11-25 | Halliburton Energy Services, Inc. | Responsively activated wellbore stimulation assemblies and methods of using the same |
| US8899334B2 (en) | 2011-08-23 | 2014-12-02 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| US8991509B2 (en) | 2012-04-30 | 2015-03-31 | Halliburton Energy Services, Inc. | Delayed activation activatable stimulation assembly |
| US9784070B2 (en) | 2012-06-29 | 2017-10-10 | Halliburton Energy Services, Inc. | System and method for servicing a wellbore |
| GB2522145A (en) * | 2012-10-04 | 2015-07-15 | Nexen Energy Ulc | Improved hydraulic fracturing process for deviated wellbores |
| CN103046899B (en) * | 2013-01-22 | 2016-05-11 | 中国石油天然气股份有限公司 | A kind of down-hole is controlled and is used electronic tag ball |
| CN103277079B (en) * | 2013-06-04 | 2015-12-09 | 中国海洋石油总公司 | A kind of tubing string of horizontal well fracturing completion and pressing crack construction method thereof |
| CN103437747B (en) * | 2013-09-04 | 2016-01-20 | 中国石油集团川庆钻探工程有限公司 | A kind of horizontal well infinite stages segmentation remodeling method |
| US9587464B2 (en) * | 2014-10-02 | 2017-03-07 | Sc Asset Corporation | Multi-stage liner with cluster valves and method of use |
| CN104481487B (en) * | 2014-11-12 | 2017-10-13 | 中国石油化工股份有限公司 | The multistage many seam staged fracturing methods of horizontal well |
| CN105386749B (en) * | 2015-06-17 | 2018-09-07 | 周再乐 | A kind of novel fracturing tool |
| CN107366520A (en) * | 2016-05-12 | 2017-11-21 | 中石化石油工程技术服务有限公司 | A kind of robot switching sliding sleeve |
| CN106050188B (en) * | 2016-06-01 | 2018-09-11 | 中国海洋石油集团有限公司 | A kind of horizontal well multistage fracturing intelligence sliding sleeve |
| CN113123757A (en) * | 2020-01-16 | 2021-07-16 | 成都维锐泰达能源技术有限公司 | Intelligent delivery device |
| CN111764868B (en) * | 2020-07-14 | 2022-09-23 | 中国石油集团渤海钻探工程有限公司 | Underground seat block extending device |
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| CN102518418A (en) | 2012-06-27 |
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