CN212898313U - Expanding type reamer capable of being activated for multiple times - Google Patents
Expanding type reamer capable of being activated for multiple times Download PDFInfo
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- CN212898313U CN212898313U CN202021167729.5U CN202021167729U CN212898313U CN 212898313 U CN212898313 U CN 212898313U CN 202021167729 U CN202021167729 U CN 202021167729U CN 212898313 U CN212898313 U CN 212898313U
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Abstract
The utility model relates to an expanding reamer that can activate many times, including the top connection, the elastic claw, a body, the wing, the inner sliding sleeve, the dabber, the activation module, top connection one end and body one end fixed connection, the inner sliding sleeve is established to sealed the card on the body inner wall, the sealed card of dabber is established at the inner sliding sleeve inner wall, be equipped with sunken inner chamber on the inner sliding sleeve inner wall, axial interval is equipped with the feed liquor hole on the dabber lateral wall, go out the liquid hole, the top connection, the dabber, the inner wall of body forms the runner that link up, activation module fixed mounting is in the feed liquor hole, go out on the dabber inner wall between the liquid hole, body lateral wall internally mounted has a plurality of wing, wing one side. The utility model provides high drilling efficiency.
Description
Technical Field
The utility model belongs to the technical field of well drilling reaming equipment, especially, relate to an expanding can multiple activation reamer.
Background
With the deepening of the understanding of the mechanism of oil and gas reservoir formation and the deepening of the development of oil and gas fields, the problems encountered in drilling are more and more complex, the solution of the complex problems also depends on the development of drilling tools, and the reaming-while-drilling technology is proposed and developed based on the background. The reaming-while-drilling technology is a drilling technology which adopts a reaming-while-drilling tool and a conventional drill bit procedure to drill comprehensively and simultaneously enlarge a borehole. Practices show that the reaming-while-drilling technology has obvious advantages in the aspects of treating underground complex conditions, reducing comprehensive drilling cost, improving drilling speed, improving well construction quality and safety and the like, and the reaming-while-drilling tool is gradually becoming an important petroleum drilling matched tool.
At present, foreign research on reaming while drilling technology is always a research hotspot and core technology of several oilfield service companies. Several oil-clothing companies have well-established reaming-while-drilling tools, such as the Rhino series reaming tools of Schlumberger, RTM and URTM reaming tools of Haributton, GaugePro reaming tools of Beckhols, RipTide reaming tools of Wilford, and Andderreamers, Dog Leg reaming tools of the well-known oil-well companies.
The related research of drilling by reaming while drilling is carried out later in China, the related research and practical application of the drilling tool are still in the initial growth stage, the existing reamer has the problems of low reaming efficiency, unreasonable structure, poor working safety, short service life and the like in the use process, and the existing technology can only carry out reaming once no matter ball throwing or differential pressure activation, cannot be used for multiple times underground, and seriously restricts the drilling efficiency.
Therefore, based on the problems, the expansion type multi-activation reamer which can solve the problem that the reamer can not be activated for multiple times in the drilling process and improve the drilling efficiency has important practical significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide one kind and can solve the difficult problem that the reamer can not activate the reaming many times at the well drilling in-process to improve the expanding many times activation reamer of well drilling efficiency.
The utility model provides a its technical problem take following technical scheme to realize:
an expanding reamer capable of being activated for multiple times comprises an upper connector, an elastic claw, a body, blades, an inner sliding sleeve, a mandrel and an activation module, wherein one end of the upper connector is fixedly connected with one end of the body, the inner sliding sleeve is hermetically clamped on the inner wall of the body, the mandrel is hermetically clamped on the inner wall of the inner sliding sleeve, a sunken inner cavity is formed in the inner wall of the inner sliding sleeve, a liquid inlet hole and a liquid outlet hole are formed in the side wall of the mandrel at an axial interval, a through flow channel is formed in the inner walls of the upper connector, the mandrel and the body, the activation module can be fixedly arranged on the inner wall of the mandrel between the liquid inlet hole and the liquid outlet hole, a plurality of blades are arranged in the side wall of the body, one side of each blade can slide relative to the outer wall of the mandrel, when the activation module is activated, the mandrel can slide relative to the inner sliding sleeve, and a fluid through, the core shaft slides relative to the blades to expose the cutting teeth on the back of the blades out of the outer wall of the body; when the activation module stops working, the mandrel slides to return compared with the inner sliding sleeve, and the blade is retracted into the side wall of the body.
Further, the activation module includes ball seat, deformable ball, shutoff hole ball, the ball seat is installed on the dabber inner wall, deformable ball can plug up the ball seat for fluid can not pass through the runner, the shutoff hole ball can plug up the feed liquor hole makes fluid can not get into the feed liquor hole, just the shutoff hole ball can freely pass the ball seat.
Furthermore, an elastic claw is clamped between the inner sliding sleeve and the upper joint, a claw groove is formed in the side wall of the mandrel, and the elastic claw can be clamped into the claw groove and matched with the claw groove.
Furthermore, the claw grooves are arranged on the side wall of the mandrel in the circumferential direction, at least two groups of the claw grooves are arranged in the circumferential direction, and an interval is formed between the two groups in the axial direction of the mandrel.
Furthermore, the elastic claw is of a cylindrical structure, one end of the elastic claw is clamped between the inner sliding sleeve and the upper joint through a boss, the other end of the elastic claw is axially divided into a plurality of claws, a protruding clamping block is arranged on the outer side wall of each claw, and the clamping block can be clamped into the claw groove.
Furthermore, one side of the blade, which is in contact with the outer wall of the mandrel, is of an inclined surface structure and is matched with the inclined surface of the mandrel, and the blade is connected with the body through a disc spring.
Furthermore, one side of the mandrel, which is far away from the claw groove, is fixedly connected with a compression spring, and the other end of the compression spring is fixedly connected with the body.
Furthermore, the deformable ball is a non-metallic ball, and the hole plugging ball can be a steel ball.
Furthermore, O-shaped sealing rings are arranged between the outer wall of the mandrel and the inner wall of the body, between the inner wall of the inner sliding sleeve and the outer wall of the mandrel, between the outer wall of the inner sliding sleeve and the inner wall of the body and between the ball seat and the outer wall of the mandrel.
The utility model has the advantages that:
the utility model overcomes the defect that exists among the prior art, solved the difficult problem that the reamer can not activate the reaming many times at the well drilling in-process to drilling efficiency has been improved.
Drawings
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus are not intended to limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.
FIG. 1 is a schematic illustration of an expandable multiple activation reamer according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of an embodiment of the present invention showing a configuration of an expandable multiple activation reamer when it is changed to a reaming mode;
FIG. 3 is a cross-sectional view of an expanded multi-activation reamer having resilient fingers according to an embodiment of the present invention;
Detailed Description
First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be described in detail below by way of example, but all the descriptions are only for illustrative purpose and should not be construed as forming any limitation to the present invention. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 3.
FIG. 1 is a schematic illustration of an expandable multiple activation reamer according to an embodiment of the present invention; FIG. 2 is a schematic illustration of an embodiment of the present invention showing a configuration of an expandable multiple activation reamer when it is changed to a reaming mode; FIG. 3 is a cross-sectional view of an expanded multi-activation reamer having resilient fingers according to an embodiment of the present invention; as shown in fig. 1-3, the expandable reamer capable of being activated for multiple times provided in this embodiment includes an upper joint 1, an elastic claw 2, a body 3, blades 5, an inner sliding sleeve 7, a mandrel 8, and an activation module, wherein one end of the upper joint 1 is fixedly connected to one end of the body 3, the inner sliding sleeve 7 is sealingly clamped on the inner wall of the body 3, the mandrel 8 is sealingly clamped on the inner wall of the inner sliding sleeve 7, a concave inner cavity 701 is formed on the inner wall of the inner sliding sleeve 7, liquid inlet holes 12 and liquid outlet holes 16 are axially spaced on the sidewall of the mandrel 8, a through flow channel 26 is formed on the inner walls of the upper joint 1, the mandrel 8 and the body 3, the activation module is fixedly mounted on the inner wall of the mandrel 8 between the liquid inlet holes 12 and the liquid outlet holes 16, a plurality of blades 5 are mounted inside the sidewall of the body 3, one side of each blade 5 can slide relative to the, when the activation module is activated, the mandrel 8 can slide relative to the inner sliding sleeve 7, so that the liquid inlet hole 12, the liquid outlet hole 16 and the inner cavity 701 of the inner sliding sleeve 7 form a fluid through structure, and the mandrel 8 slides relative to the blade 5 to expose the cutting teeth 22 at the back of the blade 5 out of the outer wall of the body 3; when the activation module stops working, the mandrel 8 slides back compared with the inner sliding sleeve 7, and the blades 5 are retracted into the side wall of the body 3.
It should be noted that the activation module includes a ball seat 14, a deformable ball 13, and a hole blocking ball 23, the ball seat 14 is mounted on the inner wall of the mandrel 8, the deformable ball 13 can block the ball seat 14 so that fluid cannot pass through the flow passage 26, and the hole blocking ball 23 can block the liquid inlet hole 12 so that fluid cannot enter the liquid inlet hole 12; it can be considered that, the deformable ball is the non-metal ball, can select the polytetrafluoroethylene material, the stifled hole ball can adopt the steel ball, in this embodiment, because feed liquor hole 12 is 2, so stifled hole ball 23 is 2 at least, and the diameter sum of two stifled hole balls 23 is not more than the runner 26 internal diameter above the ball seat 14, under the fluid high pressure effect, stifled hole ball 23 can be strikeed feed liquor hole department, stops up the feed liquor hole, and, the stifled hole ball can freely pass the ball seat for the follow-up accessible ball seat of stifled hole falls runner 26 below, realizes the purpose of many times activation.
In addition, in order to prevent the mandrel from being started in advance, elastic claws 2 are clamped between the inner sliding sleeve 7 and the upper joint 1, claw grooves are formed in the side wall of the mandrel 8, and the elastic claws 2 can be clamped into the claw grooves and matched with the claw grooves; specifically, in this embodiment, the claw grooves are circumferentially arranged on the sidewall of the mandrel, and at least two sets of the circumferentially arranged claw grooves are provided, and an interval is provided between the two sets in the axial direction of the mandrel, as shown in fig. 1 and 2, the claw grooves 24 and the claw grooves 25 are recessed structures arranged on the sidewall of the mandrel, so that the elastic claws can be conveniently clamped in; as shown in fig. 3, the elastic claw 2 is a cylindrical structure, one end of the elastic claw is clamped between the inner sliding sleeve 7 and the upper joint 1 through a boss 201, the other end of the elastic claw is axially divided into a plurality of claws 202, a convex fixture block 203 is arranged on the outer side wall of each claw 202, and the fixture block 203 can be clamped into the claw groove.
In order to facilitate the outer wall of the mandrel 8 to push the blades 5 to be exposed, it can be considered that: the side of the blade 5 contacting the outer wall of the mandrel 8 is an inclined surface structure and is matched with the inclined surface of the mandrel 8, and in order to enable the blade to be retracted, the blade 5 is connected with the body 3 through a disc spring 4.
In addition, in this embodiment, one side of the mandrel 8, which is far away from the claw groove, is fixedly connected to the compression spring 6, and the other end of the compression spring 6 is fixedly connected to the body 3, so that when the activation module stops working, the existence of the compression spring 6 can facilitate the mandrel 8 to slide back compared with the inner sliding sleeve 7.
In order to prevent the fluid from communicating with the inside and outside of the drilling tool, the outer wall of the mandrel and the inner wall of the body are sealed through an O-shaped sealing ring 19, the inner wall of the inner sliding sleeve and the outer wall of the mandrel are sealed through O- shaped sealing rings 11 and 17, the outer wall of the inner sliding sleeve and the inner wall of the body are sealed through O- shaped sealing rings 9, 10 and 18, and the ball seat and the outer wall of the mandrel are sealed through an O-shaped sealing ring 15.
For example, in the drilling construction process, when the hole expanding mode needs to be changed, the deformable ball 13 is put in, and after the deformable ball 13 falls on the ball seat 14, the internal pressure of the flow channel 26 rises, so that the mandrel 8 is pushed to be separated from the elastic claw 2 and go down against the lower end compression spring 6; meanwhile, the blades 5 are expanded outwards along the inclined surface of the mandrel against the disc spring 4; when the mandrel 8 descends to the liquid inlet hole 12 to be communicated with the liquid outlet hole 16, the descending is stopped, meanwhile, the elastic claws 2 enter the claw grooves 24 at the upper end of the mandrel, and at the moment, a fluid channel is formed between the inner sliding sleeve 7 and the liquid inlet hole 12 and the liquid outlet hole 16 of the mandrel; when conventional drilling is needed, two hole blocking balls 23 are put in place, after the hole blocking balls are in place, the liquid inlet hole 12 of the mandrel is blocked under the impact of fluid, when the pressure reaches a set value, the deformable balls 13 at the lower end are subjected to plastic deformation and then fall into a ball catcher (not shown in the figure) at the lower part of the reamer together, at the moment, the mandrel 8 moves upwards under the action of the compression spring 6, and the blade 5 is retracted under the action of the disc spring 4. The above steps are repeated, and the conversion between the conventional drilling mode and the reaming drilling mode is realized.
The above embodiments are described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (9)
1. An expandable multi-activation reamer, comprising: comprises an upper joint, an elastic claw, a body, a blade, an inner sliding sleeve, a mandrel and an activation module, wherein one end of the upper joint is fixedly connected with one end of the body, the inner wall of the body is hermetically clamped with the inner sliding sleeve, the mandrel is hermetically clamped on the inner wall of the inner sliding sleeve, the inner wall of the inner sliding sleeve is provided with a sunken inner cavity, the side wall of the mandrel is axially provided with a liquid inlet hole and a liquid outlet hole at intervals, the upper joint, the mandrel and the inner wall of the body form a through flow passage, the activation module can be fixedly arranged on the inner wall of the mandrel between the liquid inlet hole and the liquid outlet hole, a plurality of blades are arranged inside the side wall of the body, one side of the blade is slidable relative to the outer wall of the mandrel, and when the activation module is activated, the core shaft can slide compared with the inner sliding sleeve, and a fluid through structure can be formed by the liquid inlet hole, the liquid outlet hole and the inner cavity of the inner sliding sleeve, the core shaft slides relative to the blades to expose the cutting teeth on the back of the blades out of the outer wall of the body; when the activation module stops working, the mandrel slides to return compared with the inner sliding sleeve, and the blade is retracted into the side wall of the body.
2. The expandable multi-activation reamer of claim 1, wherein: the activation module includes ball seat, deformable ball, plugged ball, the ball seat is installed on the dabber inner wall, deformable ball can plug up the ball seat for the fluid can not pass through the runner, plugged ball can plug up the feed liquor hole makes the fluid can not get into the feed liquor hole, just plugged ball can freely pass the ball seat.
3. The expandable multi-activation reamer of claim 1, wherein: an elastic claw is clamped between the inner sliding sleeve and the upper joint, a claw groove is formed in the side wall of the mandrel, and the elastic claw can be clamped into the claw groove and matched with the claw groove.
4. The expandable multi-activation reamer of claim 3, wherein: the claw grooves are arranged on the side wall of the mandrel in the circumferential direction, at least two groups of the claw grooves are arranged in the circumferential direction, and an interval is arranged between the two groups in the axial direction of the mandrel.
5. The expandable multi-activation reamer of claim 4, wherein: the elastic claw is of a cylindrical structure, one end of the elastic claw is clamped between the inner sliding sleeve and the upper joint through a boss, the other end of the elastic claw is axially divided into a plurality of claws, a protruding clamping block is arranged on the outer side wall of each claw, and the clamping block can be clamped into the claw groove.
6. The expandable multi-activation reamer of claim 1, wherein: the blade is in an inclined plane structure at one side contacted with the outer wall of the mandrel and matched with the inclined plane of the mandrel, and the blade is connected with the body through a disc spring.
7. An expandable multiple activation reamer as recited in any one of claims 3-5 wherein: one side of the mandrel, which is far away from the claw groove, is fixedly connected with a compression spring, and the other end of the compression spring is fixedly connected with the body.
8. The expandable multi-activation reamer of claim 2, wherein: the deformable ball is a non-metallic ball, and the hole plugging ball can be a steel ball.
9. The expandable multi-activation reamer of claim 2, wherein: o-shaped sealing rings are arranged between the outer wall of the mandrel and the inner wall of the body, between the inner wall of the inner sliding sleeve and the outer wall of the mandrel, between the outer wall of the inner sliding sleeve and the inner wall of the body and between the ball seat and the outer wall of the mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021167729.5U CN212898313U (en) | 2020-06-22 | 2020-06-22 | Expanding type reamer capable of being activated for multiple times |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021167729.5U CN212898313U (en) | 2020-06-22 | 2020-06-22 | Expanding type reamer capable of being activated for multiple times |
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| Publication Number | Publication Date |
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| CN212898313U true CN212898313U (en) | 2021-04-06 |
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| CN202021167729.5U Active CN212898313U (en) | 2020-06-22 | 2020-06-22 | Expanding type reamer capable of being activated for multiple times |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513268A (en) * | 2021-04-29 | 2021-10-19 | 中煤科工集团重庆研究院有限公司 | Ball throwing type fixed-point reaming device |
-
2020
- 2020-06-22 CN CN202021167729.5U patent/CN212898313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513268A (en) * | 2021-04-29 | 2021-10-19 | 中煤科工集团重庆研究院有限公司 | Ball throwing type fixed-point reaming device |
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