CN115680514A - Drilling type supporting casing centralizer - Google Patents
Drilling type supporting casing centralizer Download PDFInfo
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- CN115680514A CN115680514A CN202110860539.4A CN202110860539A CN115680514A CN 115680514 A CN115680514 A CN 115680514A CN 202110860539 A CN202110860539 A CN 202110860539A CN 115680514 A CN115680514 A CN 115680514A
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- lower main
- ball
- ball groove
- main body
- main part
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Abstract
The invention discloses a drilling type supporting sleeve centralizer, which comprises an upper joint, an anti-rotation piston, a connecting sleeve, a throttling nozzle, a lower main body, a ball protecting sleeve, a ball groove cylinder, a spring and balls, wherein the upper joint and the anti-rotation piston are fixedly connected by threads, the connecting sleeve and the lower main body are fixedly connected by threads, the throttling nozzle and the ball groove cylinder are fixedly connected by threads, the anti-rotation piston is sleeved with the connecting sleeve, the annular wall of the lower main body is provided with a plurality of rows and a plurality of columns of through holes for mounting the balls, the lower main body is internally provided with the ball groove cylinder corresponding to the through holes on the annular wall of the lower main body, the spring is arranged in a space formed between the bottom of the lower main body and the lower part of the ball groove cylinder, the ball protecting sleeve with the through holes with the diameter smaller than that of the balls is arranged on the outer side of the lower main body, and the balls are arranged in a space formed by the lower main body, the ball protecting sleeve and the ball groove cylinder, and the balls can be radially extruded along with the compression of the ball groove cylinder. The problem of the current centralizer righting dynamics not enough is overcome, the purpose that improves the drilling and workover operation success rate is realized.
Description
Technical Field
The invention belongs to the technical field of drilling and repairing of oil fields, and relates to a drilling type supporting casing centralizer.
Background
Sidetrack drilling or casing milling by a liquid driven screw drill is the most common operation means in the drilling and repairing process of an oil field.
Due to the combined influence of the pressure of a drill string and the inclination of a well hole, the direction of the pressure of the drill bit is not parallel to the direction of the well hole, and in the condition, the drill bit or a milling tool easily damages the inner wall of a casing, and a centralizer needs to be additionally arranged at the position close to the drill bit. The existing commonly used centralizer has the defects that the centralizing force of a centralizer is insufficient, and a near-bit drill rod cannot be centered, so that the drilling type supporting casing centralizer needs to be invented to overcome the problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing a supporting casing centralizer capable of increasing the centralizing force degree along with the increase of the liquid discharge capacity, and achieving the purpose of improving the success rate of drilling and workover operations.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a creep into formula support sleeve centralizer, including the top connection, prevent changeing the piston, the adapter sleeve, the throttle mouth, lower main part, the ball sheath section of thick bamboo, the ball groove section of thick bamboo, a spring, the ball, top connection and prevent changeing the piston by screw thread fixed connection, the adapter sleeve is by screw thread fixed connection with lower main part, throttle mouth and ball groove section of thick bamboo by screw thread fixed connection, prevent changeing the piston and cup joint with the adapter sleeve, the two can axial displacement, it has the multirow multiseriate through-hole of installation ball to open on the rampart of lower main part, install the ball groove section of thick bamboo that corresponds with the rampart upper through-hole of lower main part in the lower main part, install the spring in the space of constituteing between lower main part bottom and the ball groove section of thick bamboo lower main part outside, the ball sheath section of thick bamboo that has the through-hole of diameter less than the ball diameter is installed to lower main part, install the ball in the space that lower main part, the ball sheath section of thick bamboo, the ball groove section of thick bamboo is constituteed, the ball can be extruded radially along with ball groove section of thick bamboo compression spring.
The anti-rotation piston is movably connected with the connecting sleeve through a hexagonal hole.
The invention has the beneficial effects that: the drilling type supporting casing centralizer can overcome the problem that the existing centralizer is insufficient in centralizing force to a great extent, friction force can be reduced by adopting the contact centralizing of the balls and the casing, the centralizing force can be adjusted along with the displacement, and the purpose of improving the success rate of drilling and repairing operations is achieved.
Drawings
FIG. 1 is a schematic illustration of the configuration of the drilling support casing centralizer of the present invention in a free state;
FIG. 2 is a schematic illustration of the configuration of the drilling support casing centralizer of the present invention in a centralizing state;
FIG. 3 is a partial schematic view of the anti-rotation piston and connection sleeve of the drilling support casing centralizer of the present invention movably connected via a hexagonal hole;
FIG. 4 is a schematic illustration of a ball mounting configuration of the drilling support casing centralizer of the present invention;
in the figure, 1-upper joint, 2-anti-rotation piston, 3-connecting sleeve, 4-throttling nozzle, 5-lower main body, 6-ball sheath cylinder, 7-ball groove cylinder, 8-spring and 9-ball.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
As shown in fig. 1-4, the drilling type supporting casing centralizer of the invention comprises an upper joint 1, an anti-rotation piston 2, a connecting sleeve 3, a throttling nozzle 4, a lower main body 5, a ball protecting sleeve 6, a ball groove cylinder 7, a spring 8 and balls 9, wherein the upper joint 1 and the anti-rotation piston 2 are fixedly connected by threads, the connecting sleeve 3 and the lower main body 5 are fixedly connected by threads, the throttling nozzle 4 and the ball groove cylinder 7 are fixedly connected by threads, the anti-rotation piston 2 is sleeved with the connecting sleeve 3 and can move axially, a plurality of rows and columns of through holes for mounting the balls 9 are arranged on the annular wall of the lower main body 5, the ball groove cylinder 7 corresponding to the through hole on the annular wall of the lower main body 5 is arranged in the lower main body 5, the spring 8 is arranged in a space formed between the bottom of the lower main body 5 and the lower part of the ball groove cylinder 7, the ball protecting sleeve 6 with the through hole with the diameter smaller than the ball 9 is arranged on the outer side of the lower main body 5, the balls 9 and the ball groove cylinder 7 are arranged in the space formed by the ball protecting sleeve 9, and the ball groove cylinder 7 can be radially extruded out along with the ball groove cylinder 7.
Preferably, the anti-rotation piston 2 is movably connected with the connecting sleeve 3 through a hexagonal hole.
Specifically, the part near the drill bit does not need to be centered in the process of descending the well by the drilling type supporting casing centralizer, the ball groove barrel 7 is in contact with the anti-rotation piston 2 under the thrust action of the spring 8, the ball 9 is embedded in the ball groove barrel 7, when the drilling process needs to be centered, the liquid flows through the throttling nozzle 4 to generate throttling to form a high pressure area 10 and a low pressure area 11, the ball groove barrel 7 is pushed to move downwards through throttling pressure difference, the ball 9 is radially extruded to be in contact with the inner wall of the casing under the limiting action of the lower main body 5 and the ball protecting sleeve 6, and along with the increase of the liquid discharge capacity, the contact force between the ball 9 and the inner wall of the casing is increased, and the centering action is enhanced. When the liquid injection is stopped, the spring 8 is reset to push the ball groove cylinder 7 to move upwards, so that the ball 9 retracts into the ball groove cylinder 7.
In summary, the disclosure of the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can easily set other embodiments within the technical teaching of the present invention, but such embodiments are included in the scope of the present invention.
Claims (2)
1. A drilling type supporting sleeve centralizer is characterized by comprising an upper joint (1), an anti-rotation piston (2), a connecting sleeve (3), a throttling nozzle (4), a lower main body (5) and a ball protecting sleeve (6), ball groove drum (7), spring (8), ball (9), top connection (1) and prevent changeing piston (2) by screw thread fixed connection, adapter sleeve (3) and lower main part (5) are by screw thread fixed connection, throttle mouth (4) and ball groove drum (7) are by screw thread fixed connection, prevent changeing piston (2) and adapter sleeve (3) cup joint, the two can axial displacement, it has multirow multiseriate through-hole of installation ball (9) to open on the rampart of lower main part (5), install ball groove drum (7) that correspond with the rampart of lower main part (5) on the rampart of lower main part (5) in lower main part (5), install spring (8) in the space of constituteing between lower main part (5) bottom and ball groove drum (7) lower part, ball sheath drum (6) that have the diameter to be less than the through-hole of ball (9) diameter is installed in lower main part (5) outside, lower main part (5), ball sheath drum (6), ball groove drum (7) are installed in the space of constituteing, ball (9) can be along with ball groove drum (7) compression spring (8) and radially extruded.
2. The drilling support casing centralizer of claim 1, characterized in that the anti-rotation piston (2) is movably connected with the connection sleeve (3) through a hexagonal hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860539.4A CN115680514A (en) | 2021-07-28 | 2021-07-28 | Drilling type supporting casing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110860539.4A CN115680514A (en) | 2021-07-28 | 2021-07-28 | Drilling type supporting casing centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115680514A true CN115680514A (en) | 2023-02-03 |
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ID=85057877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110860539.4A Pending CN115680514A (en) | 2021-07-28 | 2021-07-28 | Drilling type supporting casing centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115680514A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929223A (en) * | 2023-02-24 | 2023-04-07 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
-
2021
- 2021-07-28 CN CN202110860539.4A patent/CN115680514A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929223A (en) * | 2023-02-24 | 2023-04-07 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
| CN115929223B (en) * | 2023-02-24 | 2023-05-16 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
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