CN214498937U

CN214498937U - Separating drill rod and drill bit adapter

Info

Publication number: CN214498937U
Application number: CN202120639801.8U
Authority: CN
Inventors: 于化刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-10-26
Anticipated expiration: 2031-03-30

Abstract

The utility model provides a disconnect-type drilling rod, drill bit crossover sub. The conversion joint consists of a first conversion joint and a second conversion joint, wherein the outer side of the first conversion joint is provided with an external thread connection drilling tool, and the outer side of the second conversion joint is provided with an internal thread connection drilling rod; the first conversion joint and the second conversion joint are connected in a threaded connection mode through a thread pair. The inner side of the first conversion joint is provided with a multi-thread pair internal thread, the inner side of the second conversion joint is provided with a multi-thread pair external thread matched with the thread pair internal thread, the thread pair external thread and the thread pair internal thread are mutually screwed and connected to form a multi-thread pair, when a drill rod rotates reversely to exceed the torque of the drill rod, the thread pair firstly falls off, and the drill rod is separated from the drilling tool, so that the drill rod of the drilling machine is completely lifted to the ground. The utility model discloses a connect with the screw thread connection mode through the multi-thread screw is vice between first crossover sub and the second crossover sub. The adapter is suitable for being used as a drill rod and drill bit adapter.

Description

Separating drill rod and drill bit adapter

Technical Field

The utility model relates to a rig field especially relates to disconnect-type drilling rod, drill bit crossover sub.

Background

At present, the phenomenon of drill jamming sometimes occurs in the use process of a drilling machine, although the phenomenon is avoided to the utmost extent and cannot be predicted. In the working process of the drilling machine, the drilling tool is clamped by the hole wall, so that the drill lifting or drilling cannot be normally carried out, the drilling rod cannot rotate, the drilling tool cannot be lifted, and the drilling rod cannot be placed. When the drill is stuck, the drill rod and the drilling tool can not be lifted up, put down or rotated in the drilling well, and the drilling machine can not work normally.

After the sticking accident happens, the drilling tool is lifted again after the effective processing mode is that the drill rod is lifted and placed repeatedly from top to bottom at the initial position of the accident, and the drilling tool is rotated to the positive and negative circulation mode to enable the foreign matters to fall off, become loose and fall off. At the moment, only external torque is applied or an auxiliary tool is used for assisting lifting, the drilling tool is rotated, and then the drilling tool is lifted until the fault is relieved. The drill is not required to be rapidly and vigorously lifted by increasing the lifting force, and the hard lifting of the hard drill is avoided, so that the drill rod is prevented from being twisted off, the best solution opportunity is lost, and huge loss is caused.

Because the drill rod and the drilling tool are detachably connected, the phenomenon of drill jamming cannot be avoided. There is no better solution to sticking the drill except reversing the drill pipe. In the process of lifting the drill rod and the drilling tool, the drill rod is extremely easy to twist off, the drill rod and the drilling tool cannot be lifted to the ground, the risk that the drill rod and the drilling tool are lost is caused, and unnecessary economic loss in the operation of the drilling machine is caused.

Disclosure of Invention

The problem of drilling rod twist-off, loss drilling rod and drilling tool when can solving the rig sticking, the utility model provides a disconnect-type drilling rod, drill bit crossover sub. The first adapter is connected with the second adapter in a threaded connection mode through the multi-thread screw pair, when the drill clamping phenomenon is handled, the drill rod is reversed, the screw pair is firstly separated, the drill rod is separated from the drilling tool, the drill rod of the drilling machine is completely lifted to the ground, and the drilling tool is lifted to the ground according to the situation, so that the technical problem of drill clamping of the drilling machine is solved.

The utility model provides a scheme that technical problem adopted is:

the separated drill rod and drill bit conversion joint consists of a first conversion joint and a second conversion joint, wherein the outer side of the first conversion joint is provided with an external thread connected with a drilling tool, and the outer side of the second conversion joint is provided with an internal thread connected with a drill rod; the first conversion joint and the second conversion joint are connected in a threaded connection mode through a multi-thread pair.

In order to further solve the technical problem to be solved the utility model provides an among the first crossover sub and the second crossover sub, first crossover sub inboard is provided with the vice internal thread of multi-thread screw thread, and second crossover sub inboard is provided with the vice external screw thread of multi-thread screw thread that mutually supports with the vice internal thread of screw thread, and the vice external screw thread of screw thread closes the connection with the vice internal thread of screw thread each other soon and forms the pair of multi-thread screw thread, when the drilling rod reversal surpasses the drilling rod moment of torsion, the vice department of screw thread breaks away from at first, drilling rod and drilling tool separation for the drilling rod of rig is whole to be carried to ground.

Furthermore, the internal thread of the thread pair and the external thread of the thread pair are both multi-thread threads, and the number of the threads is adjusted according to the diameter of the drill rod.

Further, the external thread on the first conversion joint, which is connected with the drilling tool, is a single thread and corresponds to the drilling tool; the internal thread connected with the drill rod on the second conversion joint is a single thread and corresponds to the drill rod.

The utility model has the advantages that the first adapter and the second adapter are connected in a thread connection mode through the multi-thread screw pair, when the drill is stuck, the drill rod is reversed, the screw pair is firstly separated, and the drill rod is separated from the drilling tool, so that the drill rod of the drilling machine is completely lifted to the ground, and the drilling tool is lifted to the ground according to the situation, and the drilling tool can continue to drill to the required depth if necessary; the loss of the drill rod and the drilling tool caused by the twist-off of the drill rod is avoided, and the economic loss is reduced to the maximum extent. The adapter is suitable for being used as a drill rod and drill bit adapter.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a cross-sectional view of a first transition joint structure;

FIG. 3 is a cross-sectional view of a second adapter structure;

FIG. 4 is a sectional view taken along line A-A.

In the figure, 1 is a first adapter, 2 is a thread pair internal thread, 3 is an external thread, 4 is a through hole, 5 is a clamping groove, 6 is a second adapter, 7 is an internal thread, and 8 is a thread pair external thread.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in the figure, the separated drill rod and drill bit conversion joint consists of a first conversion joint 1 and a second conversion joint 6, wherein the outer side of the first conversion joint 1 is provided with an external thread 3 for connecting a drilling tool, and the outer side of the second conversion joint 6 is provided with an internal thread 7 for connecting a drill rod; the first adapter 1 and the second adapter 6 are connected by a multi-thread pair in a thread coupling manner.

In order to further guarantee the utility model discloses the stability of structure, 1 inboard of first crossover sub is provided with the vice internal thread 2 of multi-thread screw thread, and 6 inboards of second crossover sub are provided with the vice external screw thread 8 of multi-thread screw thread that mutually supports with the vice internal thread 2 of screw thread, and the vice external screw thread 8 of screw thread closes the connection each other with the vice internal thread 2 of screw thread and forms the pair of multi-thread screw thread, when the drilling rod reversal surpassed the drilling rod moment of torsion, the vice department of screw thread breaks away from at first, and the drilling rod separates with the drilling tool for the drilling rod of rig is whole to be carried to ground.

In order to guarantee the utility model discloses the stability of structure, the vice internal thread of screw thread 2 is multi-thread screw with the vice external screw thread 8 of screw thread, adjusts its helix number according to the diameter size of drilling rod.

Preferably, the multiple threads of the thread pair internal thread 2 and the thread pair external thread 8 are 2, 3, 4, 5 and 6 helical threads.

In order to optimize the reliability of the structure of the utility model, the external thread 3 connected with the drilling tool on the first adapter 1 is a single thread and corresponds to the drilling tool; the internal thread 7 on the second adapter 6 connected with the drill rod is a single thread and corresponds to the drill rod.

In order to optimize more the utility model discloses a structure, the vice internal thread of screw thread 2 all is equipped with the clearance groove with internal thread 7, and the control screw thread of being convenient for closes length soon, and locking is sealed.

As a conventional technical option, the first adapter 1 and the second adapter 6 are both hollow cylinders, through holes 4 are formed in the first adapter, and clamping grooves 5 for mounting and dismounting the first adapter and the second adapter are radially formed in the outer cylinder.

Conventionally, the first adapter 1 and the second adapter 6 are made of 40 CrNiMo.

In a preferred embodiment, a check valve is installed in the second adapter 2 to prevent silt from entering the drilling tool, so that the drill rod can continue to work after being unscrewed to reach an ideal depth.

The utility model discloses a theory of operation:

under the condition of the same thread diameter, compared with a single thread pair, the multi-thread pair has the advantages of small torque and poor locking force.

The outer side of the first adapter 1 is connected with the external thread 3 of the drilling tool and the outer side of the second adapter 6 is connected with the internal thread 7 of the drill rod, and both the external thread and the internal thread are single threads; the thread pair internal thread 2 on the inner side of the first adapter 1 and the thread pair external thread 8 on the inner side of the second adapter 6 are both multi-thread; therefore, when the drill rod is reversely rotated, when the torque of the drill rod is overloaded, the multi-thread pair formed by the internal thread 2 of the thread pair and the external thread 8 of the thread pair is separated, the drill rod is separated from the drilling tool, the drill rod is completely and smoothly lifted to the ground from the ground, the drilling tool is lifted to the ground according to the situation, the drilling can be continued to the required depth if needed, and the economic loss is reduced to the maximum extent.

The utility model has the characteristics that:

because the utility model discloses constitute by first crossover sub 1 and the combination of second crossover sub 6, by the vice connection of multi-thread between first crossover sub 1 and the second crossover sub 6, so, the vice moment of torsion of multi-thread between first crossover sub 1 and the second crossover sub 6 is little, locking force is poor, when the drilling rod reverses overload, at first break away from in the vice department of multi-thread, drilling rod and drilling tool separation, the drilling rod is whole to be promoted to ground, the drilling rod has been avoided twisting off, the drilling rod promotes the risk that does not come up, economic loss is reduced, and production cost is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Disconnect-type drilling rod, drill bit crossover sub, characterized by: the separated drill rod and drill bit conversion joint consists of a first conversion joint (1) and a second conversion joint (6), wherein an external thread (3) is arranged on the outer side of the first conversion joint (1) and connected with a drilling tool, and an internal thread (7) is arranged on the outer side of the second conversion joint (6) and connected with a drill rod; the first adapter (1) and the second adapter (6) are connected in a threaded connection mode through a multi-thread pair.

2. The breakaway drill rod and drill bit adapter of claim 1, wherein:

the drilling machine is characterized in that a multi-thread pair internal thread (2) is arranged on the inner side of the first conversion joint (1), a multi-thread pair external thread (8) matched with the thread pair internal thread (2) is arranged on the inner side of the second conversion joint (6), the thread pair external thread (8) and the thread pair internal thread (2) are mutually screwed and connected to form a multi-thread pair, when a drill rod reversely rotates to exceed the torque of the drill rod, the thread pair is firstly separated, the drill rod is separated from a drilling tool, and the drill rod of the drilling machine is completely lifted to the ground.

3. The breakaway drill rod and drill bit adapter of claim 2, wherein:

the thread pair internal thread (2) and the thread pair external thread (8) are both multi-thread threads, and the number of the threads is adjusted according to the diameter of the drill rod.

4. The breakaway drill rod and drill bit adapter of claim 2, wherein:

the multiple threads of the thread pair internal thread (2) and the thread pair external thread (8) are 2, 3, 4, 5 and 6 spiral lines.

5. The breakaway drill rod and drill bit adapter of claim 1, wherein:

the external thread (3) connected with the drilling tool on the first adapter (1) is a single thread and corresponds to the drilling tool; the internal thread (7) connected with the drill rod on the second adapter (6) is a single thread and corresponds to the drill rod.

6. The breakaway drill rod and drill bit adapter of claim 2, wherein:

the thread pair internal thread (2) and the internal thread (7) are both provided with a clearance groove, so that the screwing length of the threads can be conveniently controlled, and the threads are locked and sealed.

7. The breakaway drill rod and drill bit adapter of claim 1, wherein:

first crossover sub (1) and second crossover sub (6) are the hollow circular cylinder shape, and its inside is equipped with through-hole (4), and outside cylinder is radial to be equipped with draw-in groove (5) that are used for the cyclic annular dismantlement of installation.

8. The breakaway drill rod and drill bit adapter of claim 1, wherein:

and a check valve is arranged in the second adapter (6) to prevent silt from entering the drilling tool.

9. The breakaway drill rod and drill bit adapter of claim 1, wherein:

the first conversion joint (1) and the second conversion joint (6) are made of 40 CrNiMo.