CN102953689A - Radioactive source bin and drill collar with same - Google Patents
Radioactive source bin and drill collar with same Download PDFInfo
- Publication number
- CN102953689A CN102953689A CN2011102518242A CN201110251824A CN102953689A CN 102953689 A CN102953689 A CN 102953689A CN 2011102518242 A CN2011102518242 A CN 2011102518242A CN 201110251824 A CN201110251824 A CN 201110251824A CN 102953689 A CN102953689 A CN 102953689A
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- radioactive source
- storehouse
- drill collar
- shield
- bin
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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
Technical field:
A kind of radioactive source chamber structure that the present invention relates to the geophysical exploration device has the drill collar of this source chamber structure.
Background technology:
The penetron that uses in geophysical exploration is with the gamma-ray irradiation stratum of radioactivity gamma ray source emission, measures formation bulk density according to Compton effect, thereby calculates the logger of the degree of porosity on wellbore stratum.Radioactive source commonly used is 2 Curie's gamma ray source, and it has serious infringement to human body and environment, so 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 the drill collar, and the wedging shielding slab causes larger measure error to avoid radioactive ray to enter probe without the stratum direct projection between radioactive source and the probe.The radioactivity by the mud runner is not considered in the radioactive source storehouse of this frame mode, and owing to designs meeting so that measure error increases without collimating aperture around the radioactive source.
Summary of the invention:
The objective of the invention is is exactly the defective that exists for prior art, provide a kind of be used with boring density measuring instrument, can greatly improve certainty of measurement, and safe and reliable radioactive source storehouse and have the drill collar in this radioactive source storehouse.
Technical scheme of the present invention comprises:
A kind of radioactive source storehouse comprises matrix and is distributed in matrix interior radioactive source chamber, shield storehouse, and the high density shield is arranged in the shield storehouse.The radioactive source chamber is the staged circular hole, is followed successively by from inside to outside radial hole, screwed hole, seal groove, jump-ring slot.The shield storehouse is the cup-shaped groove that covers on radial hole periphery, radioactive source chamber, and cup-shaped groove is embedded with the high density shield, and the outer end of shield is by the sprue shutoff.Radially be carved with on the shield
The low-density window, this window communicates with collimating aperture on being located at matrix.The built-in low density material of collimating aperture.
A kind of drill collar with aforementioned radioactive source storehouse, the drill collar middle part is with the plural righting wing, and one of them righting wing is provided with groove, and groove is outside to seal the storehouse with the cover plate mix proportion.Be provided with the radioactive source storehouse at the same righting wing, the 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 the such scheme is used for depositing radioactive source, and the sealing storehouse is used for depositing the probe of Density Measuring Instrument, and drill collar is used for cooperating with boring the 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.After being used for drill collar, even the measurement while drilling environment badly causes the shield fragmentation or comes off, radioactive source still is fixed on on the drill collar that bores Density Measuring Instrument.Owing to shielding is arranged around the radioactive source and have the 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.
Description of drawings:
Fig. 1 is with the schematic diagram that bores the special-purpose drill collar of density instrument
Fig. 2 is along the amplification profile of A-A line among Fig. 1
Fig. 3 is the amplification profile schematic diagram in radioactive source storehouse among Fig. 2
Among the figure: the 1st, drill collar, the 2nd, mud runner, the 3rd, sealing storehouse (or claiming the 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.
The specific embodiment:
The invention will be further described below in conjunction with Figure of description.
Embodiment 2, contrast Fig. 1, and 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 the shaft bottom circulation, flows out by bit port in slurry channel 2, then returns well head through the annular space between drill collar and the stratum.Mud not only carries out landwaste, but also as the transmission medium of underground signal, density measurement passes to ground take mud as carrier with 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 to seal storehouse 3 with the cover plate mix proportion, and density detector is put into wherein.Be provided with radioactive source storehouse (its structure is with reference to above-mentioned enforcement, 1 by reference to the accompanying drawings 2 and 3 description) at the same righting wing, the 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 °.With boring density instrument drill collar 1 axis slurry channel 2 is being arranged.
Supplementary notes: the jump ring in the jump-ring slot 11 can guarantee that radioactive source does not come off under the adverse circumstances in well, adopts specialist tools to carry out remote disassembling to avoid that operating personnel are caused larger radiation injury in the process in loading and unloading source.Radioactive source adopts the left-hand thread helicitic texture, independently is placed in the radioactive source chamber 4.The high density shield can be the shapes such as side 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, so that the radioactive source chamber can all be put into the 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 the groove, and carry out welding procedure and process, carry out permanent fixing, even shield is broken, also can not come off.Because shield adopts cup type shape, has wrapped radioactive source fully, has stopped the radioactivity of radioactive source by the mud runner, has increased the security reliability in this radioactive source storehouse.
Claims (4)
1. radioactive source storehouse, comprise matrix and be distributed in matrix interior radioactive source chamber, shield storehouse, the high density shield is arranged in the shield storehouse, it is characterized in that: the radioactive source chamber is the staged circular hole, is followed successively by from inside to outside radial hole, screwed hole, seal groove, jump-ring slot; The shield storehouse is the cup-shaped groove that covers on radial hole periphery, radioactive source chamber, and cup-shaped groove is embedded with the high density shield, and the outer end of shield is by the sprue shutoff; Radially be carved with the low-density window on the shield, this window communicates with collimating aperture on being located at matrix.
2. radioactive source according to claim 1 storehouse is characterized in that: the built-in low density material of collimating aperture.
3. drill collar that has according to claim 1 or 2 described radioactive source storehouses is characterized in that: the drill collar middle part is with the plural righting wing, and one of them righting wing is provided with groove, groove outside with cover plate mix proportion sealing storehouse; Be provided with the radioactive source storehouse at the same righting wing, the radioactive source storehouse is near sealing storehouse one side, and the collimating aperture in radioactive source storehouse is to sealing storehouse lopsidedness.
4. drill collar according to claim 3 is characterized in that: 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 °.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102953689A true CN102953689A (en) | 2013-03-06 |
| CN102953689B CN102953689B (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110251824.2A Active CN102953689B (en) | 2011-08-30 | 2011-08-30 | Radioactive source bin and drill collar with same |
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| Country | Link |
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| CN (1) | CN102953689B (en) |
Cited By (3)
| 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 |
| CN111119871A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Measuring device for measuring formation density value and measuring method thereof |
| 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 (7)
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| US4879463A (en) * | 1987-12-14 | 1989-11-07 | Schlumberger Technology Corporation | Method and apparatus for subsurface formation evaluation |
| US20040065823A1 (en) * | 2002-10-08 | 2004-04-08 | Medhat Mickael | Gamma ray spectroscopy logging-while-drilling system |
| 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 |
-
2011
- 2011-08-30 CN CN201110251824.2A patent/CN102953689B/en active Active
Patent Citations (7)
| 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 |
| US20040065823A1 (en) * | 2002-10-08 | 2004-04-08 | Medhat Mickael | Gamma ray spectroscopy logging-while-drilling system |
| 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 |
Cited By (4)
| 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 |
| CN111119871A (en) * | 2018-10-31 | 2020-05-08 | 中石化石油工程技术服务有限公司 | Measuring device for measuring formation density value and measuring method thereof |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102953689B (en) | 2014-12-10 |
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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 |