Self-locking reamer drilling tool
The design of the self-locking reamer tool solves the problem of the single operation of existing reamers, enabling selective reaming operations and reducing equipment load and replacement frequency.
Patent Information
- Application Number
- CN202422882511.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The existing reamer has a single operating command and cannot selectively perform reaming operations, which increases the burden on the equipment and requires the drill bit to be pulled out and replaced after wear.
A self-locking reamer drill bit was designed, comprising a reaming mechanism, a drive mechanism, and a locking mechanism. It uses liquid pressure to drive the reamer to extend or retract, enabling selective reaming operations.
It enables selective reaming operations, reduces equipment load, avoids unnecessary drill bit changes, and improves the efficiency of reamer usage.
Smart Images
Figure CN223739319U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to petroleum equipment technical field, concretely relates to a self-locking type hole opener drilling tool. BACKGROUND
[0002] The hole opener is a tool for expanding the diameter of a hole. It is widely used in petroleum drilling engineering and is mainly used for expanding the drilled wellbore. For example, in the drilling process, a drill bit with a small diameter is used to drill a hole, and then a hole opener is used to expand the diameter of the wellbore in order to lower the casing or meet certain specific wellbore requirements (such as increasing the exposed area of the oil layer to improve oil production efficiency).
[0003] At present, the ordinary hole opener usually adopts the hydraulic principle. The cutter body is opened under the condition of starting the pump, the hole expanding operation is carried out, and the body is retracted after stopping the pump, and the drilling operation can be carried out. However, the hole opener in the prior art has single operation instruction, can only expand the well after entering the well, and has the problem of being unable to selectively expand the well, for example, it will also expand the well in the stable well wall section without expanding the well, which increases the burden of the equipment; for example, when the cutter body is worn, the hole opener can only be replaced by drilling, and temporary expansion of the hole cannot be performed. SUMMARY
[0004] The utility model aims at providing a self-locking type hole opener drilling tool to solve the above-mentioned deficiencies in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A self-locking type hole opener drilling tool, comprising a joint, the end of the joint is fixedly connected with a mounting pipe, further comprising: a hole expanding mechanism, comprising a mounting rod fixedly connected to the end of the mounting pipe, a sliding block is slidably connected to the mounting rod, a support frame is rotatably connected to the mounting rod, an expansion cutter is fixedly installed on the support frame, and the support frame is rotatably connected to the support frame through a connecting rod; a driving mechanism is arranged in the mounting rod and is used to drive the hole expanding mechanism to extend or retract the expansion cutter.
[0007] Further, the driving mechanism comprises a core shaft and a connecting portion which are slidably arranged in the mounting pipe, the core shaft is arranged in a penetrating manner, a compression spring is arranged between the connecting portion and the mounting pipe, and the end of the connecting portion is fixedly connected with the support block.
[0008] Further, the connecting part comprises a piston slidably connected in the mounting pipe, a first channel adapted to the mandrel is arranged in the middle of the piston, a connecting rod is fixedly connected to one end of the piston, a second channel is arranged in the connecting rod, a third channel is arranged in the mounting pipe, a cover plate is fixedly connected to the end of the mounting pipe, the cover plate is fixedly connected with the mounting rod, a placing groove for placing the compression spring is formed between the connecting rod and the inner wall of the mounting pipe, a fixing rod is fixedly connected to the end of the connecting rod, the fixing rod is fixedly connected with a fixing ring through the cover plate, and the fixing rod is slidably connected with the mounting rod.
[0009] Further, the locking mechanism comprises a locking block fixedly arranged on the mounting rod, a slot adapted to the support frame is arranged in the locking block, and elastic lugs are fixedly arranged on the two sides of the support frame.
[0010] Further, the end of the mounting rod is fixedly connected with a drill bit.
[0011] In the above technical scheme, the self-locking type reamer drilling tool has the beneficial effects that:
[0012] Through the reaming mechanism, the sliding block is driven to move by the driving mechanism, the sliding block moves to drive the support frame to rotate through the connecting rod, so that the reamer is extended to enlarge the borehole, and when the reaming is completed, the reamer is reset by the driving mechanism, so that the reaming operation can be selectively performed, the equipment burden is reduced, and the drilling and reamer replacement are avoided.
[0013] It should be understood that the foregoing general description and the following detailed description are only exemplary and illustrative, but not for limiting the present disclosure.
[0014] The present application provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0016] Fig. 1 The overall structure schematic diagram provided by the embodiment of the present application is shown in the figure;
[0017] Fig. 2 The locking mechanism structure schematic diagram provided by the embodiment of the present application is shown in the figure;
[0018] Fig. 3 The cross-sectional structure schematic diagram is provided for the embodiment of the utility model.
[0019] Mark explanation:
[0020] 1, joint; 2, mounting pipe; 3, reaming mechanism; 31, mounting rod; 32, sliding block; 33, support frame; 35, connecting rod; 4, drive mechanism; 41, mandrel; 42, connecting part; 421, piston; 422, first channel; 427, connecting rod; 424, second channel; 423, third channel; 428, cover plate; 425, fixed rod; 426, fixed ring; 43, compression spring; 51, lock block; 53, lock groove; 6, drill bit. Specific implementation
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present disclosure clearer, the technical scheme of the embodiments of the present disclosure will be described clearly and completely below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.
[0022] Please refer to Figs. 1-3 A self-locking reamer drilling tool, comprising a joint 1, the end of the joint 1 is fixedly connected with a mounting pipe 2, further comprising: a reaming mechanism 3, comprising a mounting rod 31 fixedly connected to the end of the mounting pipe 2, a sliding block 32 is slidably connected to the mounting rod 31, a support frame 33 is rotatably connected to the mounting rod 31, a reamer is fixedly installed on the support frame 33, and the support frame 33 is rotatably connected to the support frame 33 through a connecting rod 35; a drive mechanism 4 is arranged in the mounting rod 31 and is used to drive the reaming mechanism 3 to extend or retract the reamer. The joint 1 is detachably connected (threaded or bolted) with the rotating rod, and the joint 1 is arranged in a through manner.
[0023] The drive mechanism 4 drives the sliding block 32 to move, the sliding block 32 moves through the connecting rod 35 to drive the support frame 33 to rotate, so as to extend the reamer to enlarge the borehole; after the reaming is completed, the drive mechanism 4 drives the reamer to reset, so that the reaming operation can be selectively performed, the equipment burden is reduced, and the reamer is avoided from being replaced during tripping.
[0024] Further, the drive mechanism 4 comprises a mandrel 41 and a connecting part 42 which are slidably arranged in the mounting pipe 2, the mandrel 41 is arranged in a through manner, a compression spring 43 is further arranged between the connecting part 42 and the mounting pipe 2, and the end of the connecting part 42 is fixedly connected with a support block.
[0025] Further, the connecting part 42 comprises a piston 421 slidably connected in the mounting pipe 2, a first channel 422 adapted to the mandrel 41 is formed in the middle of the piston 421, a connecting rod 427 is fixedly connected to one end of the piston 421, a second channel 424 is formed in the connecting rod 427, a third channel 423 is formed in the mounting pipe 2, a cover plate 428 is fixedly connected to the end of the mounting pipe 2, the cover plate 428 is fixedly connected with the mounting rod 31, a placing groove for placing the compression spring 43 is formed between the connecting rod 427 and the inner wall of the mounting pipe 2, a fixing rod 425 is fixedly connected to the end of the connecting rod 427, the fixing rod 425 is fixedly connected with a fixing ring 426 through the cover plate 428, and the fixing rod 425 is slidably connected with the mounting rod 31.
[0026] The mandrel 41 is driven to move by the pressure of the pumped liquid, the mandrel 41 is inserted into the piston 421 and drives the piston 421 to move, the piston 421 is compressed to compress the compression spring 43, and the connecting rod 427 is driven to move, and the liquid is discharged from the first channel 422, the second channel 424 and the third channel 423 to the mounting pipe 2; the connecting rod 427 is driven to move through the fixing rod 425 to drive the fixing ring 426 to move, and the fixing ring 426 is driven to move to drive the sliding block 32 to move.
[0027] Further, the locking mechanism comprises a locking block 51 fixedly arranged on the mounting rod 31, a slot adapted to the support frame 33 is formed in the locking block 51, and elastic lugs are fixedly arranged on the two sides of the support frame 33, and locking grooves 53 adapted to the lugs are formed in the locking block 51.
[0028] The device drives the driving mechanism 4 by changing the pressure of the pumped liquid, so that the change of the pressure of the pumped liquid drives the expansion tool to start, and the lugs and the locking grooves 53 are arranged, so that the pressure of the pumped liquid needs to overcome the force of the lugs to separate from the locking grooves 53, and then the expansion tool can be extended outward to perform the hole expansion operation.
[0029] Further, the end of the mounting rod 31 is fixedly connected with a drill bit 6.
[0030] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.
Claims
1. A self-locking reamer drill tool, comprising a joint (1), the end of which is fixedly connected with a mounting pipe (2), characterized in that: Also include: The expansion mechanism (3) comprises a mounting rod (31) fixedly connected to the end of the mounting pipe (2), a sliding block (32) is slidingly connected on the mounting rod (31), a support frame (33) is rotatably connected on the mounting rod (31), an expansion cutter is fixedly installed on the support frame (33), and the support frame (33) is rotatably connected with the support frame (33) through a connecting rod (35); The driving mechanism (4) is arranged in the mounting rod (31) and is used for driving the expansion mechanism (3) to extend or retract the expansion cutter.
2. The self-locking reamer drill tool of claim 1, wherein, The driving mechanism (4) includes a core shaft (41) and a connecting portion (42) slidingly arranged in the mounting pipe (2), the core shaft (41) is arranged in a penetrating manner, a compression spring (43) is further arranged between the connecting portion (42) and the mounting pipe (2), and an end of the connecting portion (42) is fixedly connected with a support block.
3. The self-locking reamer drill tool of claim 2, wherein, The connecting portion (42) includes a piston (421) slidingly connected in the mounting pipe (2), a first channel (422) matched with the core shaft (41) is formed in the middle of the piston (421), a connecting rod (427) is fixedly connected to one end of the piston (421), a second channel (424) is formed in the connecting rod (427), a third channel (423) is formed in the mounting pipe (2), a cover plate (428) is fixedly connected to an end of the mounting pipe (2), the cover plate (428) is fixedly connected with the mounting rod (31), a placing groove for placing the compression spring (43) is formed between the connecting rod (427) and the inner wall of the mounting pipe (2), a fixed rod (425) is fixedly connected to an end of the connecting rod (427), the fixed rod (425) passes through the cover plate (428) and is fixedly connected with a fixed ring (426), and the fixed rod (425) is slidingly connected with the mounting rod (31).
4. The self-locking reamer drill tool of claim 3, wherein, The locking mechanism includes a locking block (51) fixedly arranged on the mounting rod (31), a slot matched with the support frame (33) is formed in the locking block (51), elastic protrusions are fixedly arranged on both sides of the support frame (33), and locking grooves (53) matched with the protrusions are formed in the locking block (51).
5. The self-locking reamer drill tool of claim 1, wherein, An end of the mounting rod (31) is fixedly connected with a drill bit (6).