CN210829145U - Petroleum soft and hard layer coring tool - Google Patents
Petroleum soft and hard layer coring tool Download PDFInfo
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- CN210829145U CN210829145U CN201921115038.8U CN201921115038U CN210829145U CN 210829145 U CN210829145 U CN 210829145U CN 201921115038 U CN201921115038 U CN 201921115038U CN 210829145 U CN210829145 U CN 210829145U
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- inner tube
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- coring tool
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Abstract
The utility model discloses a core instrument is got to soft or hard layer of oil. It includes the clamp that sets up in inner tube and the inner tube, be provided with the elasticity rock core claw that is located the clamp top in the inner tube, the elasticity rock core claw includes that the annular cover and the annular sheathe in the elastic sheet that evenly arranges along the annular cover circumference that sets up, the elastic sheet upwards extends and draws close to the axis center transition of annular cover from the annular cover, the center that each elastic sheet drawn close forms the through-hole that can make behind the extrusion rock core pass through, the top of inner tube is provided with the joint, elasticity rock core claw is settled in the inner tube and is compressed tightly fixedly through the joint. After adopting foretell structure, except utilizing the clamp to carry out preliminary extrusion back, the elastic action of reuse flexure strip extrudees loose core and then through-hole output that forms after each flexure strip draws close, has improved the fashioned stability of core from this greatly to guaranteed normal coring operation, shortened the engineering time, improved the operating efficiency greatly, thereby reduced production operation cost.
Description
Technical Field
The invention relates to a tool for on-site sampling of a drilled stratum, in particular to a petroleum soft and hard layer coring tool.
Background
In the process of petroleum exploration and drilling, due to the geological requirement of finding oil and gas, the drilled stratum is required to be sampled according to the geological requirement, and various types of coring tools and corresponding coring technologies are developed.
Present coring tool kind is more and more, the technique is also more and more mature, however, present coring tool, generally all be provided with the clamp in the inner tube, the passageway that forms the core and pass through at the clamp center, current this kind of structure, though can realize coring operation, when meetting some softer rock stratums, it extrudees the core that enters into in the passageway to singly lean on the clamp, hardly guarantee core stable molding, it is loose often easy to make the core, normal coring operation has been influenced, the engineering time has been prolonged, the operating efficiency is reduced, thereby make the production operation cost very high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a petroleum soft and hard layer coring tool which has reasonable structural design, high stability of a rock core and high coring efficiency, thereby improving the construction efficiency and reducing the construction cost.
In order to solve the technical problem, the petroleum soft and hard layer coring tool comprises an inner cylinder and a hoop arranged in the inner cylinder, wherein an elastic rock core claw positioned above the hoop is arranged in the inner cylinder, the elastic rock core claw comprises an annular sleeve and elastic sheets which are uniformly distributed on the annular sleeve along the circumference of the annular sleeve, the elastic sheets extend upwards from the annular sleeve and are transitionally drawn close to the axis center of the annular sleeve, the centers of the elastic sheets which are drawn close form through holes through which rock cores can pass after extrusion, a joint is arranged at the top of the inner cylinder, and the elastic rock core claw is arranged in the inner cylinder and is compressed and fixed through the joint.
Each elastic sheet is of a curved surface structure, and forms a spherical outer contour structure after being drawn close to the axis center of the annular sleeve.
The thickness of the annular sleeve is larger than that of each elastic sheet, and a step surface is formed at the outer edge of the joint of the annular sleeve and the elastic sheets.
The width of each elastic piece is gradually reduced from the annular sleeve to the upper part.
The upper portion of inner tube is provided with the internal thread, the lower part that connects is provided with the external screw thread with internal thread complex, connect soon to connect the cooperation through internal thread and external screw thread with the inner tube with the joint.
And the inner side of the upper part of the joint is provided with an internal thread connected with the suspension component.
After adopting foretell structure, because be provided with the elasticity core claw that is located the clamp top in the inner tube, utilize the flexure strip that draws close to the axis center transition of annular cover on the elasticity core claw ingeniously, except utilizing the clamp to carry out preliminary extrusion back, the elastic action of reuse flexure strip extrudees the through-hole output that the back formed through each flexure strip draws close after loose core, the fashioned stability of core has been improved greatly from this, thereby normal coring operation has been guaranteed, the engineering time has been shortened, the operating efficiency is greatly improved, thereby the production operation cost is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a petroleum soft and hard coring tool of the present invention;
FIG. 2 is a schematic perspective view of the resilient core leg of the present invention;
fig. 3 is a schematic top view of the resilient core leg of the present invention.
Detailed Description
The petroleum soft and hard layer coring tool of the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
As shown in the figure, the core taking tool for the soft and hard petroleum layers comprises an inner cylinder 1 and a clamp 2 arranged in the inner cylinder, wherein an elastic rock core claw 3 positioned above the clamp is arranged in the inner cylinder 1, the elastic rock core claw 3 comprises an annular sleeve 4 and elastic sheets 5 which are uniformly distributed on the annular sleeve along the circumference of the annular sleeve, the intervals between the adjacent elastic sheets 5 are equal, the elastic sheets 5 are fixedly arranged with the annular sleeve and extend upwards from the annular sleeve, the elastic sheets extend to the middle upper part and are closed towards the axis center of the annular sleeve in a bending transition mode, through holes 6 which can enable rock cores to pass through after extrusion are formed in the centers of the closed elastic sheets 5, as can be seen from the figure, each elastic sheet 5 is of a curved surface structure, the tail end of each elastic sheet is closed towards the axis center of the annular sleeve, each elastic sheet 5 is closed towards the axis center of the annular sleeve to form a spherical outer contour structure, the thickness of the annular sleeve 4 is larger than that of each elastic sheet, and the outer edge shape of the joint of the annular sleeve A step surface 8 is formed, the top of the inner cylinder 1 is provided with a joint 7, and the elastic rock core claw 3 is arranged in the inner cylinder and is tightly pressed and fixed on the step surface of the annular sleeve through the joint 7.
Furthermore, the width of each elastic sheet 5 is gradually reduced from the annular sleeve to the upper part, thereby further improving the coring stability, in addition, the upper part of the inner cylinder 1 is provided with an internal thread, the lower part of the joint 7 is provided with an external thread matched with the internal thread, the joint 7 is screwed and matched with the inner cylinder 1 through the internal thread and the external thread, and the inner side of the upper part of the joint 7 is provided with an internal thread connected with a suspension component.
Claims (6)
1. The utility model provides a soft or hard layer coring tool of oil, includes clamp (2) that set up in inner tube (1) and the inner tube, its characterized in that: be provided with elasticity core rod claw (3) that are located the clamp top in inner tube (1), elasticity core rod claw (3) are sheathe in including annular cover (4) and annular and are followed the elastic sheet (5) that evenly arranges of annular cover circumference that sets up, elastic sheet (5) are sheathe in from the annular and are upwards extended and are drawn close to the axis center transition of annular cover, each piece the central through-hole (6) that can make the core rod pass through after the extrusion that form of elastic sheet (5) draw close to, the top of inner tube (1) is provided with joint (7), elasticity core rod claw (3) are settled in the inner tube and are compressed tightly fixedly through joint (7).
2. The petroleum soft and hard coring tool of claim 1, wherein: each elastic piece (5) is of a curved surface structure, and the elastic pieces (5) approach to the axis center of the annular sleeve to form a spherical outer contour structure.
3. An oil hard-soft layer coring tool as set forth in claim 1 or 2, wherein: the thickness of the annular sleeve (4) is larger than that of each elastic sheet, and a step surface (8) is formed at the outer edge of the joint of the annular sleeve and the elastic sheets.
4. The petroleum soft and hard coring tool of claim 3, wherein: the width of each elastic piece (5) is gradually reduced from the annular sleeve to the upper part.
5. The petroleum coring tool of claim 1, 2 or 4, wherein: the upper portion of inner tube (1) is provided with the internal thread, the lower part that connects (7) is provided with the external screw thread with internal thread fit, connect (7) and inner tube (1) to connect the cooperation soon through internal thread and external screw thread.
6. The petroleum soft and hard coring tool of claim 5, wherein: and the inner side of the upper part of the joint (7) is provided with an internal thread connected with the suspension component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921115038.8U CN210829145U (en) | 2019-07-16 | 2019-07-16 | Petroleum soft and hard layer coring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921115038.8U CN210829145U (en) | 2019-07-16 | 2019-07-16 | Petroleum soft and hard layer coring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210829145U true CN210829145U (en) | 2020-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921115038.8U Active CN210829145U (en) | 2019-07-16 | 2019-07-16 | Petroleum soft and hard layer coring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210829145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374534A (en) * | 2019-07-16 | 2019-10-25 | 蒋峰 | A kind of soft or hard layer coring tool of petroleum |
-
2019
- 2019-07-16 CN CN201921115038.8U patent/CN210829145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374534A (en) * | 2019-07-16 | 2019-10-25 | 蒋峰 | A kind of soft or hard layer coring tool of petroleum |
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