CN202220565U - Radioactive source cabin and drill collar with same - Google Patents
Radioactive source cabin and drill collar with same Download PDFInfo
- Publication number
- CN202220565U CN202220565U CN2011203199184U CN201120319918U CN202220565U CN 202220565 U CN202220565 U CN 202220565U CN 2011203199184 U CN2011203199184 U CN 2011203199184U CN 201120319918 U CN201120319918 U CN 201120319918U CN 202220565 U CN202220565 U CN 202220565U
- Authority
- CN
- China
- Prior art keywords
- radioactive source
- shield
- storehouse
- cabin
- drill collar
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a radioactive source cabin and a drill collar with the same. The radioactive source cabin comprises a matrix, a radioactive source chamber and a shield cabin, wherein the radioactive source chamber and the shield cabin are distributed in the matrix. A high-density shield is arranged in the shield cabin, the radioactive source chamber is a stepped round hole, the shield cabin is a cup-shaped groove covering the periphery of a radial hole of the radioactive source chamber, the high-density shield is embedded into the cup-shaped groove, the outer end of the shield is plugged by a plugging block, and a low-density window is radially engraved on the shield and communicated with a collimating aperture arranged on the matrix. The middle of the drill collar with the radioactive source cabin is provided with more than two stabilizing wings, a groove is arranged on one stabilizing wing, and the outside of the groove is matched with a cover plate to form a closed cabin. The radioactive source cabin is close to one side of the closed cabin, and the collimating aperture of the radioactive source cabin is inclined to one side of the closed cabin. The radioactive source cabin and the drill collar with the same have the advantages that a radioactive source cannot fall off even in a severe environment while drilling, and safety and reliability in use and high measuring precision are achieved.
Description
Technical field:
A kind of radioactive source chamber structure that the utility model relates to the geophysical exploration device has the drill collar of this source chamber structure.
Background technology:
The penetron that in geophysical exploration, uses 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 a gamma ray source, and it has severe impairment to human body and environment, so the safe handling of radioactive source is very important.
In with brill density log mode; Be the mode that adopts radioactive source to separate at present with shield; Radioactive source is directly placed on the drill collar, between radioactive source and the probe wedging shielding slab with avoid radioactive ray without the stratum direct projection go into probe, cause bigger measure error.The radioactivity through the mud runner is not considered in the radioactive source storehouse of this frame mode, and can make measure error increase owing to there is not the collimating aperture design around the radioactive source.
The utility model content:
The purpose of the utility model is to be exactly the defective that exists to 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 drill collar with this radioactive source storehouse.
The technical scheme of the utility model comprises:
A kind of radioactive source storehouse comprises matrix and the radioactive source chamber, the shield storehouse that are distributed in the matrix, and the high density shield is arranged in the shield storehouse.The radioactive source chamber is the staged circular hole, is followed successively by radial hole, screwed hole, seal groove, jump ring groove from inside to outside.The shield storehouse is to cover on the peripheral cup-shaped groove of radioactive source chamber radial hole, 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 has the plural wing of setting upright, and one of them is set upright the wing and is provided with groove, and outside the cooperation with cover plate of groove formed the sealing storehouse.Be provided with the radioactive source storehouse on the wing same setting upright, 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 the collimating aperture center line becomes 45 ° of angles with the drill collar axis.
Radioactive source storehouse in the such scheme is used to deposit radioactive source, and the sealing storehouse is used to deposit the probe of density appearance, and drill collar is used for cooperating with boring drilling well density appearance.
The effect of the utility model 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 the density appearance.Owing to shielding is all arranged around the radioactive source and have the collimating aperture design, be improved in addition with the certainty of measurement of boring density instrument.The whole instrument reasonable in design, implementation method is simple.
Description of drawings:
Fig. 1 is with the sketch map 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 sketch map 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, set upright the wing, the 8th, radial hole, the 9th, screw thread mouth; The 10th, seal groove, the 11st, jump ring groove, the 12nd, sprue, the 13rd, low-density window.
The specific embodiment:
Below in conjunction with Figure of description the utility model is further described.
Embodiment 1; Contrast accompanying drawing 2 and 3; The radioactive source storehouse comprises that (the matrix underpart here promptly is the drill collar 1 among Fig. 3 to matrix; Matrix top promptly is to set upright the wing 7 among Fig. 2, just drill collar main body and the joint portion of setting upright the wing) and be distributed in radioactive source chamber 4, the shield storehouse 5 in the matrix, the high density shield is arranged in the shield storehouse 5.Radioactive source chamber 4 is the staged circular hole, is followed successively by radial hole 8, screwed hole 9, seal groove 10, jump ring groove 11 from inside to outside.Shield storehouse 5 is the cup-shaped grooves that cover on radioactive source chamber radial hole 8 peripheries, and cup-shaped groove is embedded with the high density shield, and the outer end of shield is by sprue 12 shutoff.Radially be carved with low-density window 13 on the shield, this window communicates with collimating aperture 6 (referring to Fig. 1) on being located at matrix.The wedging low density material also carries out sealing with special glue in collimating aperture 6.
Embodiment 2, map 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 through bit port in slurry channel 2, returns well head through the annular space between drill collar and the stratum then.Mud not only carries out landwaste, but also as the transmission medium of underground signal, density measurement is that carrier passes to ground with data with mud through MWD.In conjunction with accompanying drawing 2, three of the peripheral hardwares in drill collar middle part are set upright the wing 7.One of them is set upright the wing 7 and is provided with groove, and outside the cooperation with cover plate of groove formed sealing storehouse 3, and density detector is put into wherein.Be provided with radioactive source storehouse (its structure is with reference to above-mentioned enforcement, and 1 combines the description of accompanying drawing 2 and 3) on the wing same setting upright, 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 the collimating aperture center line becomes 45 ° of angles with the drill collar axis.With boring density instrument drill collar 1 axis slurry channel 2 is being arranged.
Supplementary notes: the jump ring in the jump ring groove 11 can guarantee that radioactive source does not come off under the adverse circumstances in well, in the process in loading and unloading source, adopts specialist tools to carry out remote dismounting to avoid that operating personnel are caused bigger radiation injury.Radioactive source adopts the left-hand thread helicitic texture, independently is placed in the radioactive source chamber 4.The high density shield can be shapes such as side cup type, cylinder be cup-shaped.Because the interior diameter in shield storehouse is greater than the radioactive source chamber
External diameter, axial length is greater than the length of radial hole, makes the radioactive source chamber can all put into the shield storehouse and can not contact with the perisporium in shield storehouse.A groove is opened on rightabout while-drilling density logger device drill collar surface in shield storehouse and radioactive source chamber, sprue is assembled in the groove, and carries out welding procedure and handle, and carries 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 through the mud runner, has increased the security reliability in this radioactive source storehouse.
Claims (4)
1. radioactive source storehouse; Comprise matrix and the radioactive source chamber, the shield storehouse that are distributed in the matrix; 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 radial hole, screwed hole, seal groove, jump ring groove from inside to outside; The shield storehouse is to cover on the peripheral cup-shaped groove of radioactive source chamber radial hole, 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 said radioactive source storehouses is characterized in that: the drill collar middle part has the plural wing of setting upright, and one of them is set upright the wing and is provided with groove, and the outside composition that cooperates with cover plate of groove seals the storehouse; Be provided with the radioactive source storehouse on the wing same setting upright, 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 the collimating aperture center line becomes 45 ° of angles with the drill collar axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203199184U CN202220565U (en) | 2011-08-30 | 2011-08-30 | Radioactive source cabin and drill collar with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203199184U CN202220565U (en) | 2011-08-30 | 2011-08-30 | Radioactive source cabin and drill collar with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202220565U true CN202220565U (en) | 2012-05-16 |
Family
ID=46042592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203199184U Withdrawn - After Issue CN202220565U (en) | 2011-08-30 | 2011-08-30 | Radioactive source cabin and drill collar with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202220565U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953689A (en) * | 2011-08-30 | 2013-03-06 | 中国石油化工股份有限公司 | Radioactive source bin and drill collar with same |
| CN112483019A (en) * | 2019-09-11 | 2021-03-12 | 航天科工惯性技术有限公司 | Drill collar with stepped sealing structure |
-
2011
- 2011-08-30 CN CN2011203199184U patent/CN202220565U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953689A (en) * | 2011-08-30 | 2013-03-06 | 中国石油化工股份有限公司 | Radioactive source bin and drill collar with same |
| CN102953689B (en) * | 2011-08-30 | 2014-12-10 | 中国石油化工股份有限公司 | Radioactive source bin and drill collar with same |
| CN112483019A (en) * | 2019-09-11 | 2021-03-12 | 航天科工惯性技术有限公司 | Drill collar with stepped sealing structure |
| CN112483019B (en) * | 2019-09-11 | 2023-01-31 | 航天科工惯性技术有限公司 | Drill collar with stepped sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20141210 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120516 Effective date of abandoning: 20141210 |
|
| RGAV | Abandon patent right to avoid regrant |