CN102953689B - Radioactive source bin and drill collar with same - Google Patents

Radioactive source bin and drill collar with same Download PDF

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Publication number
CN102953689B
CN102953689B CN201110251824.2A CN201110251824A CN102953689B CN 102953689 B CN102953689 B CN 102953689B CN 201110251824 A CN201110251824 A CN 201110251824A CN 102953689 B CN102953689 B CN 102953689B
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China
Prior art keywords
radioactive source
storehouse
shield
bin
drill collar
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Application number
CN201110251824.2A
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Chinese (zh)
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CN102953689A (en
Inventor
施斌全
亢武臣
崔海波
肖红兵
张海花
李勇华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Geological Measurement And Control Technology Research Institute Of Sinopec Jingwei Co ltd
China Petroleum and Chemical Corp
Sinopec Oilfield Service Corp
Sinopec Shengli Petroleum Engineering Corp
Sinopec Jingwei Co Ltd
Original Assignee
China Petroleum and Chemical Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau
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Application filed by China Petroleum and Chemical Corp, Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau filed Critical China Petroleum and Chemical Corp
Priority to CN201110251824.2A priority Critical patent/CN102953689B/en
Publication of CN102953689A publication Critical patent/CN102953689A/en
Application granted granted Critical
Publication of CN102953689B publication Critical patent/CN102953689B/en
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Abstract

The invention relates a radioactive source bin which comprises a basal body and a radioactive source chamber and a shielding body bin which are distributed in the basal body, wherein the shielding body bin is internally provided with a high density shielding body; the radioactive source chamber is a step-type round hole, and the shielding body bin is a cup-shaped groove which is covered on the periphery of a radial hole of the radioactive source chamber; and the high density shielding body is nested in the cup-shaped groove, the outer end part of the shielding body is plugged by a plugging block, a low density window is engraved on the shielding body in radial direction, and the window is communicated with an alignment hole in the basal body. The invention also relates to a drill collar with the radioactive source bin, the middle of the drill collar is provided with more than two righting wings, one of the righting wings is provided with a groove, and the exterior of the groove and a cover plate are cooperated to form a closed bin; and the radioactive source bin approaches to one side of the closed bin, and the alignment hole of the bin inclines to one side of the closed bin. The radioactive source bin and the drill collar provided by the invention have the advantages that a radioactive source can not drop off all the same even if in the harsh drilling environment, the use is safe and reliable and the measuring accuracy is high.

Description

A kind of radioactive source storehouse and the drill collar with this radioactive source storehouse
Technical field:
A kind of radioactive source chamber structure that the present invention relates to geophysical exploration device has the drill collar of this source chamber structure.
Background technology:
The penetron using in geophysical exploration is with the gamma-ray irradiation stratum of radioactivity gamma ray source transmitting, measures formation bulk density according to Compton effect, thereby calculates the logger of the degree of porosity on wellbore stratum.Conventional radioactive source is 2 Curie's gamma ray source, and it has serious infringement to human body and environment, and therefore the safe handling of radioactive source is very important.
In with brill density log mode, the mode that adopts radioactive source to separate with shield at present, radioactive source is directly placed on drill collar, between radioactive source and probe, wedges shielding slab to avoid radioactive ray to enter probe without stratum direct projection, cause larger measure error.The radioactive source storehouse of this frame mode do not consider by the radioactivity of mud runner, and because radioactive source can make measure error increase without collimating aperture design around.
Summary of the invention:
The object of the invention is is exactly the defect existing for prior art, provides a kind of and is used in conjunction with boring density measuring instrument, can greatly improve certainty of measurement, and safe and reliable radioactive source storehouse and the drill collar with this radioactive source storehouse.
Technical scheme of the present invention comprises:
A kind of radioactive source storehouse, comprises matrix and is distributed in radioactive source chamber, the shield storehouse in matrix, has high density shield in shield storehouse.Radioactive source chamber is staged circular hole, is followed successively by from inside to outside radial hole, screwed hole, seal groove, jump-ring slot.Shield storehouse is the cup-shaped groove that covers on radial hole periphery, radioactive source chamber, and cup-shaped groove is embedded with high density shield, and the outer end of shield is by sprue shutoff.On shield, be radially carved with
Low-density window, this window communicates with the collimating aperture being located on matrix.The built-in low density material of collimating aperture.
Have the drill collar in aforementioned radioactive source storehouse, drill collar middle part is with the plural righting wing, and one of them righting wing is provided with groove, and groove is outside seals storehouse with cover plate mix proportion.On the same righting wing, be provided with radioactive source storehouse, radioactive source storehouse is near sealing storehouse one side, and the collimating aperture in radioactive source storehouse is to sealing storehouse lopsidedness.The axis of the center line of described collimating aperture and sealing storehouse axis, drill collar at grade, and collimating aperture center line and drill collar axis angle at 45 °.
Radioactive source storehouse in such scheme is used for depositing radioactive source, and sealing storehouse is for depositing the probe of Density Measuring Instrument, and drill collar is for coordinating with boring drilling well Density Measuring Instrument.
Effect of the present invention is: because radioactive source separates placement with shield, increased the safety in utilization of radioactive source.For after drill collar, even if measurement while drilling environment badly causes shield fragmentation or comes off, radioactive source is still fixed on boring on the drill collar of Density Measuring Instrument.Because radioactive source has shielding around and has collimating aperture design, be improved with the certainty of measurement of boring density instrument in addition.Whole apparatus structure is reasonable in design, and implementation method is simple.
Brief description of the drawings:
Fig. 1 is with the schematic diagram that bores the special drill collar of density instrument
Fig. 2 is the amplification profile along A-A line in Fig. 1
Fig. 3 is the amplification profile schematic diagram in radioactive source storehouse in Fig. 2
In figure: the 1st, drill collar, the 2nd, mud runner, the 3rd, sealing storehouse (or claiming probe storehouse), the 4th, source compartment, the 5th, shield (storehouse), the 6th, collimating aperture, the 7th, the righting wing, the 8th, radial hole, the 9th, screw thread mouth, the 10th, seal groove, the 11st, jump-ring slot, the 12nd, sprue, the 13rd, low-density window.
Detailed description of the invention:
Below in conjunction with Figure of description, the invention will be further described.
Embodiment 1, contrast accompanying drawing 2 and 3, radioactive source storehouse comprises that (matrix underpart is herein the drill collar 1 in Fig. 3 to matrix, matrix top be the righting wing 7 in Fig. 2, the namely joint portion of drill collar main body and the righting wing) and be distributed in radioactive source chamber 4, the shield storehouse 5 in matrix, in shield storehouse 5, there is high density shield.Radioactive source chamber 4 is staged circular hole, is followed successively by from inside to outside radial hole 8, screwed hole 9, seal groove 10, jump-ring slot 11.Shield storehouse 5 is the cup-shaped grooves that cover on radial hole 8 peripheries, radioactive source chamber, and cup-shaped groove is embedded with high density shield, and the outer end of shield is by sprue 12 shutoff.On shield, be radially carved with low-density window 13, this window be located at collimating aperture 6(on matrix referring to Fig. 1) communicate.Also carry out sealing with special glue at the interior wedging low density material of collimating aperture 6.
Embodiment 2, contrast Fig. 1, a kind of drill collar with aforementioned radioactive source storehouse, drill collar 1 adopts existing structure, and its two ends are upper and lower joints, and there is mud runner 2 centre.Mud to shaft bottom circulation, flows out by bit port in slurry channel 2, then returns to well head through the annular space between drill collar and stratum.Mud not only carries out landwaste, but also as the transmission medium of underground signal, density measurement passes to ground taking mud as carrier by data by MWD.By reference to the accompanying drawings 2, three righting wings 7 of drill collar middle part peripheral hardware.One of them righting wing 7 is provided with groove, and groove is outside seals storehouse 3 with cover plate mix proportion, and density detector is put into wherein.On the same righting wing, be provided with radioactive source storehouse (its structure is with reference to above-mentioned enforcement, 12 and 3 description by reference to the accompanying drawings), radioactive source storehouse is near sealing storehouse one side.The axis in probe storehouse 3 and radioactive source chamber 4 axis are at an angle of 90.The axis of the center line of collimating aperture 6 and axis, the drill collar 1 in sealing storehouse 3 at grade, and collimating aperture center line and drill collar axis angle at 45 °.There iing slurry channel 2 with boring density instrument drill collar 1 axis.
Supplementary notes: the jump ring in jump-ring slot 11 can ensure that radioactive source does not come off under adverse circumstances in well adopt specialist tools to carry out remote disassembling to avoid that operating personnel are caused to larger radiation injury in the process in handling source.Radioactive source adopts left-hand thread helicitic texture, is independently placed in radioactive source chamber 4.High density shield can the side of being the shapes such as cup type, cylinder be cup-shaped.Because the interior diameter in shield storehouse is greater than the external diameter of radioactive source chamber, axial length is greater than the length of radial hole, makes radioactive source chamber can all put into shield storehouse and can not contact with the perisporium in shield storehouse.Open a groove on shield storehouse and radioactive source chamber rightabout while-drilling density logger device drill collar surface, sprue is assembled in groove, and carry out welding procedure processing, carry out permanent fixing, even if shield fragmentation also can not come off.Because shield adopts cup type shape, wrap radioactive source completely, stop radioactive source by the radioactivity of mud runner, increase the security reliability in this radioactive source storehouse.

Claims (2)

1. a radioactive source storehouse, comprise matrix and be distributed in radioactive source chamber, the shield storehouse in matrix, in shield storehouse, there is high density shield, it is characterized in that: radioactive source chamber is staged circular hole, is followed successively by from inside to outside radial hole, screwed hole, seal groove, jump-ring slot; Shield storehouse is the cup-shaped groove that covers on radial hole periphery, radioactive source chamber, and cup-shaped groove is embedded with high density shield, and the outer end of shield is by sprue shutoff; On shield, be radially carved with low-density window, this window communicates with the collimating aperture being located on matrix; The built-in low density material of collimating aperture.
2. have according to the drill collar in radioactive source storehouse described in claim 1, it is characterized in that: drill collar middle part is with the plural righting wing, and one of them righting wing is provided with groove, groove is outside seals storehouse with cover plate mix proportion; On the same righting wing, be provided with radioactive source storehouse, radioactive source storehouse is near sealing storehouse one side, and the collimating aperture in radioactive source storehouse is to sealing storehouse lopsidedness; The axis of the center line of described collimating aperture and sealing storehouse axis, drill collar at grade, and collimating aperture center line and drill collar axis angle at 45 °.
CN201110251824.2A 2011-08-30 2011-08-30 Radioactive source bin and drill collar with same Active CN102953689B (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN201110251824.2A CN102953689B (en) 2011-08-30 2011-08-30 Radioactive source bin and drill collar with same

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CN102953689B true CN102953689B (en) 2014-12-10

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106321066A (en) * 2016-08-31 2017-01-11 中国船舶重工集团公司第七八研究所 Fixing device of element logger probe radioactive source
CN111119871B (en) * 2018-10-31 2023-12-26 中国石油化工集团有限公司 Measuring device and measuring method for measuring stratum density value
CN112459768A (en) * 2020-11-02 2021-03-09 中国石油天然气股份有限公司 Storage device for radioactive source while drilling

Citations (6)

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Publication number Priority date Publication date Assignee Title
US4879463A (en) * 1987-12-14 1989-11-07 Schlumberger Technology Corporation Method and apparatus for subsurface formation evaluation
CN2737943Y (en) * 2004-10-26 2005-11-02 西安市首创科技工程有限公司 Detector for low-energy gamma source fluid density well logging instrument
CN2842414Y (en) * 2002-07-07 2006-11-29 丁莉 Mechanical structure of porket type contraband-goods alarm
CN201057044Y (en) * 2007-05-15 2008-05-07 中国石油天然气集团公司 Sliding plate of lithology density logger with variable structure parameter
CN101429866A (en) * 2007-11-08 2009-05-13 中国石化集团胜利石油管理局钻井工艺研究院 Wing rib telescopic while-drilling density logger
CN202220565U (en) * 2011-08-30 2012-05-16 中国石油化工股份有限公司 Radioactive source cabin and drill collar with same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6927390B2 (en) * 2002-10-08 2005-08-09 Medhat Mickael Gamma ray spectroscopy logging-while-drilling system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879463A (en) * 1987-12-14 1989-11-07 Schlumberger Technology Corporation Method and apparatus for subsurface formation evaluation
CN2842414Y (en) * 2002-07-07 2006-11-29 丁莉 Mechanical structure of porket type contraband-goods alarm
CN2737943Y (en) * 2004-10-26 2005-11-02 西安市首创科技工程有限公司 Detector for low-energy gamma source fluid density well logging instrument
CN201057044Y (en) * 2007-05-15 2008-05-07 中国石油天然气集团公司 Sliding plate of lithology density logger with variable structure parameter
CN101429866A (en) * 2007-11-08 2009-05-13 中国石化集团胜利石油管理局钻井工艺研究院 Wing rib telescopic while-drilling density logger
CN202220565U (en) * 2011-08-30 2012-05-16 中国石油化工股份有限公司 Radioactive source cabin and drill collar with same

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C06 Publication
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C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20220707

Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen

Patentee after: CHINA PETROLEUM & CHEMICAL Corp.

Patentee after: SINOPEC OILFIELD SERVICE Corp.

Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd.

Patentee after: Sinopec Jingwei Co.,Ltd.

Patentee after: Geological measurement and Control Technology Research Institute of Sinopec Jingwei Co.,Ltd.

Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen

Patentee before: CHINA PETROLEUM & CHEMICAL Corp.

Patentee before: Drilling Technology Research Institute of Sinopec Shengli Petroleum Administration Bureau

TR01 Transfer of patent right