CN210422531U - Well logging coring gun - Google Patents
Well logging coring gun Download PDFInfo
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- CN210422531U CN210422531U CN201921066924.6U CN201921066924U CN210422531U CN 210422531 U CN210422531 U CN 210422531U CN 201921066924 U CN201921066924 U CN 201921066924U CN 210422531 U CN210422531 U CN 210422531U
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Abstract
The utility model relates to a well logging coring gun, which comprises a protective cap, a circuit adapter, a coring gun main body and a protective wire which are connected in sequence; the core taking gun main body is longitudinally provided with a plurality of medicine bag cavities, medicine bags are arranged in the medicine bag cavities, and the top of each medicine bag cavity is provided with a core taking sleeve; a through hole is formed in the core taking gun body at the bottom of the medicine bag cavity, a conductive column is arranged in the through hole, an insulating sleeve is arranged between the conductive column and the through hole, and a sealing ring is arranged between the insulating sleeve and the through hole; the bottom of the through hole is plugged by a rear plug, the rear plug is fixed in the through hole by a clamp spring through the through hole, and an insulating pad is arranged between the rear plug and the insulating sleeve; threading holes are respectively arranged at the two sides of the through hole. The utility model adopts the mode of drilling along the longitudinal direction of the core taking gun main body to arrange the threading hole without welding the cover plate; the bottom of the conductive column is plugged by a rear plug, the rear plug is fixed by a clamp spring through a hole, and axial sealing is formed by matching a hole shaft formed between the rear plug and the through hole; the structure is simple, the processing is convenient, the installation and the maintenance are convenient, and the service life is long.
Description
Technical Field
The utility model relates to a well logging technical field especially relates to a core rifle is got in well logging.
Background
In the petroleum well logging industry, rock stratum samples need to be extracted from different depth sections of a well wall of an open hole well, and the samples are subjected to physical and chemical inspection after being put into the well, so that the geological structure of the well and the surrounding geological structures, the content of crude oil and the distribution level condition of the crude oil can be mastered in more detail, and reliable geological data can be provided for petroleum collection.
Sampling is also called coring, and a side-wall coring gun is mainly used for completing coring operation. At present, a wiring groove on a gun body of a conventional coring gun is designed into a groove-shaped structure with one open side, the open side is sealed by a welding cover plate, and flaw detection needs to be carried out by adopting a dye penetrant inspection method after welding. However, the hidden defect of welding cannot be avoided, and the condition that the core gun cannot be used due to water leakage of a threading hole often occurs after the core gun is worn; in addition, the ignition part of the conventional coring gun adopts a stepped hole design, and an end plate and a screw are matched for plugging, so that the conventional coring gun is inconvenient to install and maintain, the end face sealing effect is poor, the insulation and sealing are easy to cause electrical short circuit after being subjected to aging and cracking, the conventional coring gun cannot be normally used, and the normal operation of logging work is directly influenced in serious cases.
Therefore, a logging coring gun which is safe, reliable, simple in structure, convenient to use and maintain is urgently needed.
Disclosure of Invention
The utility model provides a well logging coring gun, which adopts a mode of drilling holes longitudinally along the main body of the coring gun to arrange threading holes without welding cover plates; the bottom of the conductive column is plugged by a rear plug, the rear plug is fixed by a clamp spring through a hole, and axial sealing is formed by matching a hole shaft formed between the rear plug and the through hole; the structure is simple, the processing is convenient, the installation and the maintenance are convenient, and the service life is long.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a well logging coring gun comprises a protective cap, a circuit adapter, a coring gun main body and a protective wire which are sequentially connected through threads; the core taking gun main body is provided with a top flattening section, the top flattening section is longitudinally provided with a plurality of medicine bag cavities, medicine bags are arranged in the medicine bag cavities, and the tops of the medicine bag cavities are provided with core taking sleeves; the medicine bag cavity is a cylindrical blind hole formed along the radial direction of the core gun main body, the bottom surface of the medicine bag cavity is a plane, and an arc chamfer angle is formed between the bottom surface and the side surface of the cylindrical hole; the medicine bag is arranged at the bottom of the medicine bag cavity and is positioned by the medicine bag righting sleeve at the top, and a sealing ring is arranged between the medicine bag righting sleeve and the side wall of the medicine bag cavity; a through hole which is coaxial with the medicine bag cavity is formed in the core taking gun main body at the bottom of the medicine bag cavity, a conductive column is arranged in the through hole, an insulating sleeve is arranged between the conductive column and the through hole, and a sealing ring is arranged between the insulating sleeve and the wall of the through hole; the bottom of the through hole is plugged by a rear plug, the rear plug is fixed in the through hole by a clamp spring through the through hole, and an insulating pad is arranged between the rear plug and the insulating sleeve; the through wires holes are respectively arranged on two sides of the through hole, the through wires holes are arranged along the longitudinal through length of the core taking gun main body, one through wire hole is communicated with the odd-number through holes through the wiring hole, the other through wire hole is communicated with the even-number through holes through the wiring hole, 2 bundles of wires led out from the circuit conversion joint respectively pass through the through wire holes, and each wire is connected with the corresponding conductive column through the wiring hole.
The coring sleeve is in fit connection with the internal thread on the upper part of the medicine bag cavity through the external thread on the bottom, and the coring sleeve is connected with the coring gun main body through a high-strength flexible steel wire.
The shape and the size of the medicine bag are matched with the shape and the size of the bottom of the medicine bag cavity, an annular table is arranged on the outer side of the top of the medicine bag, the top of the medicine bag centralizing sleeve is matched with a bottom hole of the core taking sleeve, and an annular bottom foot is arranged at the bottom of the medicine bag and is matched with the annular table on the medicine bag to position the medicine bag.
The bottom center of the medicine package is provided with a groove, and a distance is reserved between the conductive column and the medicine package.
The rear plug and the through hole are in transition fit connection by adopting a hole shaft.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the structural form of a conventional wiring groove welding cover plate is changed into a structure of a threading hole, the welded cover plate is cancelled, the phenomenon of abrasion and water leakage easily caused by welding hidden defects in subsequent use is avoided, and the service life of the core gun is prolonged;
2) the bottom surface of the explosive bag cavity is changed into a cylindrical hole and chamfer structure from a conventional arc surface, so that the volume of the explosive bag cavity is increased, the blasting is more powerful, and the coring effect is better;
3) the ignition part of the explosive package is changed from conventional end face sealing into shaft hole matching sealing, so that the impact force of explosion can be effectively absorbed and relieved, and the service life of the core gun is further prolonged;
4) the overall structure has no abnormal hole slot design, is convenient to process and install, not only reduces the production and maintenance cost of the device, but also enables the logging operation to be safer and more reliable.
Drawings
Fig. 1 is the utility model discloses a core rifle's of logging well structure schematic diagram.
Fig. 2 is an enlarged view of a portion i in fig. 1.
Fig. 3 is a schematic structural view of the core gun main body of the present invention.
Fig. 4 is a view a-a in fig. 3.
In the figure: 1. the protective cap 2, the circuit adapter 3, the core gun main body 4, the thread protector 5, the core taking sleeve 6, the medicine bag centralizing sleeve 7, the sealing ring 8, the medicine bag 9, the sealing ring 10, the insulating sleeve 11, the insulating pad 12, the conductive column 13, the rear plug 14, the hole clamp spring 15, the medicine bag cavity 16, the through hole 17, the threading hole 18 and the wiring hole
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the well logging coring gun of the present invention comprises a protective cap 1, a circuit adapter 2, a coring gun body 3 and a thread protector 4 which are connected in sequence by a thread; as shown in fig. 3, the core taking gun main body 3 is provided with a top-flattened section, the top-flattened section is longitudinally provided with a plurality of medicine bag cavities 15, medicine bags 8 are arranged in the medicine bag cavities 15, and the top of the medicine bag cavities 15 is provided with a core taking sleeve 5; as shown in fig. 2, the medicine bag cavity 15 is a cylindrical blind hole formed along the radial direction of the core gun body 3, the bottom surface thereof is a plane, and an arc chamfer is arranged between the bottom surface and the side surface of the cylindrical hole; the medicine bag 8 is arranged at the bottom of the medicine bag cavity 15 and is positioned by the medicine bag centralizing sleeve 6 at the top, and a sealing ring 7 is arranged between the medicine bag centralizing sleeve 6 and the side wall of the medicine bag cavity 15; a through hole 16 which is coaxially arranged with the medicine bag cavity 15 is formed in the core taking gun main body 3 at the bottom of the medicine bag cavity 15, a conductive column 12 is arranged in the through hole 16, an insulating sleeve 10 is arranged between the conductive column 12 and the through hole 16, and a sealing ring 9 is arranged between the insulating sleeve 10 and the hole wall of the through hole 16; the bottom of the through hole 16 is plugged by a rear plug 13, the rear plug 13 is fixed in the through hole 16 by a snap spring 14 through the through hole, and an insulating pad 11 is arranged between the rear plug 13 and the insulating sleeve 10; as shown in fig. 4, threading holes 17 are respectively formed in two sides of the through hole 16, the threading holes 17 are arranged along the longitudinal direction of the core gun main body 3, one threading hole 17 is communicated with the odd-numbered through hole 16 through a wiring hole 18, the other threading hole 17 is communicated with the even-numbered through hole 16 through a wiring hole 18, 2 bundles of wires led out from the circuit conversion joint 2 respectively pass through the threading holes 17, and each wire is connected with the corresponding conductive column 12 through the wiring hole 18.
The coring sleeve 5 is in fit connection with the internal thread on the upper part of the medicine bag cavity 15 through the external thread on the bottom, and the coring sleeve 5 is connected with the coring gun main body 3 through a high-strength flexible steel wire.
The shape and the size of the medicine package 8 are matched with the shape and the size of the bottom of the medicine package cavity 15, an annular table is arranged on the outer side of the top of the medicine package 8, the top of the medicine package centralizing sleeve 6 is matched with a bottom hole of the core taking sleeve 5, and an annular bottom foot is arranged at the bottom of the medicine package centralizing sleeve and is matched with the annular table on the medicine package 8 to position the medicine package 8.
The bottom center of the medicine package 8 is provided with a groove, and a distance is reserved between the conductive column 12 and the medicine package 8.
The rear plug 13 and the through hole 16 are in transition fit connection by adopting a hole shaft.
In the well logging coring gun of the utility model, a protective cap 1, a circuit adapter 2, a coring gun main body 3 and a protective wire 4 are all assembled into a whole by adopting threaded connection, and the circuit adapter 2 is used for connecting an internal circuit of the coring gun with an external instrument; the core taking sleeve 5, the medicine bag centralizing sleeve 6 and the medicine bag 8 are combined and then installed in a medicine bag cavity 15 on the core taking gun main body 3, and a sealing ring 7 between the medicine bag centralizing sleeve 6 and the medicine bag cavity 15 plays a role in fixing and sealing the medicine bag centralizing sleeve 6. The insulating sleeve 10, the insulating pad 11 and the conductive column 12 are arranged in a through hole 16 below the medicine bag 8, and the bottom of the insulating sleeve is sealed by a back plug 13 and a hole clamp spring 14.
The wire that draws from circuit crossover sub 2 passes through the wire hole 17 and the wiring hole 18 is connected with leading electrical pillar 12, receive behind the signal of telecommunication leading electrical pillar 12 and get core rifle main part 3 because of the electric arc that produces of potential difference, the percussion cartridge bag 8 explosion after striking sparks is taken out and is got core cover 5 and jump out and hit the rock in, get core cover 5 and get core rifle main part 3 between be connected through the flexible steel wire that excels in, get core cover 5 and take back from the rock through the flexible steel wire that excels in when lifting the core rifle, get core rifle and rise to can follow and get out the rock sample from getting core cover 5 after the ground.
2 threading holes 17 are arranged in parallel on the coring gun main body 3, because the total cross section is larger when the wires are grouped into one bundle, the strength of the coring gun main body 3 is reduced due to the overlarge diameter of the threading holes 17, and the cross section of the threading holes 17 can be reduced by arranging the 2 threading holes 17 and uniformly dividing the wire bundles, so that the strength of the coring gun main body 3 is ensured; the wires in the 2 threading holes 17 are connected with the conductive posts 12 at intervals, so that the overhaul is convenient.
The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the concept of the present invention within the technical scope disclosed in the present invention.
Claims (5)
1. A well logging coring gun comprises a protective cap, a circuit adapter, a coring gun main body and a protective wire which are sequentially connected through threads; the core taking gun main body is provided with a top flattening section, the top flattening section is longitudinally provided with a plurality of medicine bag cavities, medicine bags are arranged in the medicine bag cavities, and the tops of the medicine bag cavities are provided with core taking sleeves; the core taking gun is characterized in that the medicine bag cavity is a cylindrical blind hole formed along the radial direction of the core taking gun main body, the bottom surface of the medicine bag cavity is a plane, and an arc chamfer is arranged between the bottom surface and the side surface of the cylindrical hole; the medicine bag is arranged at the bottom of the medicine bag cavity and is positioned by the medicine bag righting sleeve at the top, and a sealing ring is arranged between the medicine bag righting sleeve and the side wall of the medicine bag cavity; a through hole which is coaxial with the medicine bag cavity is formed in the core taking gun main body at the bottom of the medicine bag cavity, a conductive column is arranged in the through hole, an insulating sleeve is arranged between the conductive column and the through hole, and a sealing ring is arranged between the insulating sleeve and the wall of the through hole; the bottom of the through hole is plugged by a rear plug, the rear plug is fixed in the through hole by a clamp spring through the through hole, and an insulating pad is arranged between the rear plug and the insulating sleeve; the through wires holes are respectively arranged on two sides of the through hole, the through wires holes are arranged along the longitudinal through length of the core taking gun main body, one through wire hole is communicated with the odd-number through holes through the wiring hole, the other through wire hole is communicated with the even-number through holes through the wiring hole, 2 bundles of wires led out from the circuit conversion joint respectively pass through the through wire holes, and each wire is connected with the corresponding conductive column through the wiring hole.
2. The well logging coring gun as claimed in claim 1, wherein the coring sleeve is connected with the internal thread on the upper part of the medicine package cavity through external thread on the bottom, and the coring sleeve is connected with the coring gun main body through a high-strength flexible steel wire.
3. A well logging coring gun as claimed in claim 1, wherein the shape and size of the cartridge bag are matched with those of the bottom of the cartridge bag cavity, an annular table is arranged on the outer side of the top of the cartridge bag, the top of the cartridge bag centralizing sleeve is matched with the bottom hole of the coring sleeve, and an annular bottom foot is arranged on the bottom of the cartridge bag and matched with the annular table on the cartridge bag to position the cartridge bag.
4. The well logging coring gun of claim 1, wherein the bottom center of the drug package is recessed, and the conductive post is spaced a distance from the drug package.
5. The well logging coring gun of claim 1, wherein the rear plug and the through hole are in transition fit connection by a hole shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921066924.6U CN210422531U (en) | 2019-07-09 | 2019-07-09 | Well logging coring gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921066924.6U CN210422531U (en) | 2019-07-09 | 2019-07-09 | Well logging coring gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422531U true CN210422531U (en) | 2020-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921066924.6U Active CN210422531U (en) | 2019-07-09 | 2019-07-09 | Well logging coring gun |
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| CN (1) | CN210422531U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963089A (en) * | 2020-08-14 | 2020-11-20 | 河北科力石油机械有限公司 | Bivalve combination formula core barrel convenient to heat treatment |
-
2019
- 2019-07-09 CN CN201921066924.6U patent/CN210422531U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963089A (en) * | 2020-08-14 | 2020-11-20 | 河北科力石油机械有限公司 | Bivalve combination formula core barrel convenient to heat treatment |
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