CN218624111U

CN218624111U - Oil drill pipe female adapter

Info

Publication number: CN218624111U
Application number: CN202223093451.3U
Authority: CN
Inventors: 马院富; 张超华; 易居安; 郑玉兰
Original assignee: Xingzichuan Production Plant Yanchang Oilfield Co ltd
Current assignee: Xingzichuan Production Plant Yanchang Oilfield Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-03-14
Anticipated expiration: 2032-11-21

Abstract

The utility model belongs to the technical field of petroleum drilling, in particular to a petroleum drill rod female adapter, which comprises a drill connecting block; the right side thread fastening of rig connection piece has the drilling rod body, the rig connection piece is provided with the reinforcement coupling assembling with the junction of drilling rod body, the utility model discloses a reinforcement coupling assembling that sets up, on the basis that the rig was connected the piece and is fixed with drilling rod body internal thread structure originally, utilize internal thread reinforcing sleeve to cover in the outside that the rig was connected the piece and this body junction of drilling rod, formed and covered the parcel protection architecture, increased the overall structure intensity of junction simultaneously, in addition, utilize two liang of sealed pads of laminating mutually to have formed two sets of seal structures, through the two sets of spacing rings of the reinforcing screw structure cooperation that set up, can further increase the rig and connect the piece and this body junction of drilling rod's overall structure intensity, avoid the rig to connect the piece and this body junction of drilling rod's helicitic texture appears relative rotation smooth silk phenomenon when rotating.

Description

Oil drill pipe internal thread joint

Technical Field

The utility model relates to an oil drilling technical field specifically is an oil drill pipe female adapter.

Background

The drill rod is a steel pipe with threads at the tail part and is used for connecting surface equipment of a drilling machine and drilling and grinding equipment or a bottom hole device positioned at the bottom end of a drilling well, the drill rod is used for conveying drilling mud to a drill bit and improving, reducing or rotating the bottom hole device together with the drill bit, the drill rod must be capable of bearing huge internal and external pressure, distortion, bending and vibration, and the drill rod can be used for multiple times in the process of exploiting and refining oil gas.

The utility model discloses an authorized application number is CN202021262348.5 the utility model discloses an oil drill pipe female adapter: "relate to threaded connection technical field, including the nut, the thread groove has been seted up to the inner chamber of nut, spacing mouth has been seted up to the outer wall of nut, the inner chamber activity of spacing mouth has cup jointed the card post, the one end fixedly connected with turning block of card post, the other end of card post runs through the outer wall of nut and extends to the inside of nut, the middle part fixedly connected with limiting plate of card post, one side fixed mounting of limiting plate has reset spring, reset spring's the other end and the inner wall fixed connection of nut, the bolt has been cup jointed in the right side activity of nut, and its beneficial effect is: through adopting card post and turning block to cooperate the use, can carry out effectual spacing to the bolt, and then the guarantee is put and can not produce behind the bolt and the female connection of reason not hard up, and then can not take place to drop, the effectual stability of guaranteeing the drilling rod when using also ensures its security in the use simultaneously.

When the petroleum drilling internal thread structure is actually applied, the joint of the drill rod and the drilling machine is easy to wear and loosen due to stress, and a space for improving the structural strength of the joint of the drill rod and the drilling machine exists; therefore, the threaded joint in the oil drill pipe is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

In order to compensate the not enough of prior art, the problem that the structural strength of having solved drilling rod and rig junction is worn and torn not hard up easily, the utility model provides an oil drill pipe thread joint.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to an internal thread joint of an oil drill rod, which comprises a drilling machine connecting block; a drill rod body is fixed on the right side of the drill joining block through threads, a reinforcing connecting assembly is arranged at the joint of the drill joining block and the drill rod body and comprises a first limiting ring, the first limiting ring is fixedly arranged on the right side of the middle of the outer surface of the drill joining block, a first thread groove formed in the outer surface of the drill joining block is formed in the right side of the first limiting ring, the utility model discloses a drilling machine, including rig joining block, extension pipe, screw thread, first sealing ring, the rig joins the outside fixed mounting on block right surface has first sealing ring, the rig joins the middle part fixed mounting on block right surface has the extension pipe, the outside of extension pipe is seted up the screw thread on the surface and is joined the groove, the outside fixed mounting on extension pipe right surface has the second sealing ring.

Preferably, the left side fixed mounting of drilling rod body surface has the outer sleeve that expands, the right side fixed mounting who expands the sleeve surface outward has the second spacing ring, the left side of second spacing ring is provided with sets up the second thread groove on expanding the sleeve surface outward, the second thread groove is the same with first thread groove size shape, the internal thread reinforcing sleeve is installed to the outside screw thread of second thread groove, the outside fixed mounting who expands sleeve left surface outward has the third sealing ring.

Preferably, a threaded hole is formed in the middle of the left surface of the outward expansion sleeve, and the outward expansion sleeve and the extension pipe are fixedly connected through the threaded hole and the threaded connection groove in a matched threaded manner.

Preferably, the right side of the middle part of the inner wall of the outer expanding sleeve is fixedly provided with an annular convex block, and the left surface of the annular convex block is fixedly provided with a fourth sealing gasket.

Preferably, a set of fixing holes are formed in the bottom and the top of the outer surfaces of the first limiting ring and the second limiting ring.

Preferably, a reinforcing screw is movably mounted in the inner wall of the fixing hole, and a nut is mounted on the right side of the outer surface of the reinforcing screw in a threaded manner.

The utility model discloses an useful part lies in:

1. the utility model discloses a reinforcement coupling assembling that sets up, on the fixed basis of rig connection piece and drilling rod body internal thread structure originally, utilize the internal thread to consolidate the sleeve cover and link up the outside of piece and this body coupling department of drilling rod at the rig, formed and covered parcel protection architecture, increased the overall structure intensity of junction simultaneously, in addition, utilize two liang of sealed pads of laminating mutually to form two sets of seal structures, guarantee the rig and link up the leakproofness behind piece and this body coupling of drilling rod.

2. The utility model discloses a two sets of spacing rings of reinforcement screw structure cooperation that set up can further increase the rig and link up the overall structure intensity of piece and this body coupling department of drilling rod, avoids the rig to link up the screw structure of piece and this body coupling department of drilling rod and the smooth silk phenomenon of relative rotation appears when rotating, and this kind links up the simple convenient of structural installation use to overall structure stability has further been strengthened.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the reinforcing connection assembly of the present invention;

FIG. 3 is a schematic plan view of the expanding sleeve of the present invention;

in the figure: 1. a drill connection block; 2. a drill rod body; 3. reinforcing the connecting assembly; 31. a first limit ring; 32. a first thread groove; 33. a first seal ring; 34. an extension pipe; 35. a thread joining groove; 36. a second seal ring; 37. an outwardly expanding sleeve; 38. a second stop collar; 39. a second thread groove; 40. a threaded hole; 41. a third seal ring; 42. reinforcing the sleeve; 43. an annular projection; 44. a fourth gasket; 45. a fixing hole; 46. reinforcing the screw rod; 47. and a nut.

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. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, an oil drill pipe female adapter comprises a drill rig joint block 1; the right side thread tightening of rig connection block 1 has the drilling rod body 2, and the junction of rig connection block 1 and drilling rod body 2 is provided with the reinforcement coupling assembling 3, and reinforcement coupling assembling 3 includes first spacing ring 31, and first spacing ring 31 fixed mounting is on the middle part right side of rig connection block 1 surface.

Further, a first thread groove 32 opened on the outer surface of the drill attachment block 1 is provided on the right side of the first limit ring 31, a first seal ring 33 is fixedly installed on the outer side of the right surface of the drill attachment block 1, an extension pipe 34 is fixedly installed in the middle of the right surface of the drill attachment block 1, a thread attachment groove 35 is opened on the outer surface of the extension pipe 34, a second seal ring 36 is fixedly installed on the outer side of the right surface of the extension pipe 34, an outer expansion sleeve 37 is fixedly installed on the left side of the outer surface of the drill body 2, a second limit ring 38 is fixedly installed on the right side of the outer surface of the outer expansion sleeve 37, a second thread groove 39 opened on the outer surface of the outer expansion sleeve 37 is provided on the left side of the second limit ring 38, the second thread groove 39 has the same size and shape as the first thread groove 32, an inner thread reinforcing sleeve 42 is installed on the outer side of the second thread groove 39, a third seal ring 41 is fixedly installed on the outer side of the left surface of the outer expansion sleeve 37, a threaded hole 40 is opened on the middle of the left surface of the outer expansion sleeve 37, a seal ring 37 is fixedly installed on the outer surface of the outer expansion sleeve 37, a fourth seal ring 44 is tightly jointed with the inner wall of the outer seal ring 34, and a rotary seal structure formed on the inner wall of the outer seal ring 44 of the outer seal ring 34, and the outer seal ring 34 are tightly jointed together, at the moment, the drilling machine connection block 1 and the drill rod body 2 are fixed with the threaded hole 40 through the threaded connection groove 35 on the extension pipe 34, then the reinforcing sleeve 42 is rotated, under the action of the internal thread and the second threaded groove 39, the reinforcing sleeve 42 moves towards the left side until being in threaded connection with the first threaded groove 32, the reinforcing sleeve 42 continues to rotate until the reinforcing sleeve 42 is abutted against the first limiting ring 31, at the moment, the reinforcing sleeve 42 is positioned on the outer side of the connection position of the drilling machine connection block 1 and the drill rod body 2 to form a wrapping covering structure, the overall structural strength of the connection position is increased, the reinforcing connection assembly 3 is arranged, on the basis that the internal thread structures of the drilling machine connection block 1 and the drill rod body 2 are fixed, the internal thread reinforcing sleeve 42 is used for covering the outer side of the connection position of the drilling machine connection block 1 and the drill rod body 2, a covering wrapping protection structure is formed, the overall structural strength of the connection position is increased, in addition, two sealing gaskets which are mutually attached to each other form two sealing structures originally, and the sealing performance after the connection of the drilling machine connection block 1 and the drill rod body 2 is ensured.

Further, a set of fixed orifices 45 has all been seted up to the bottom and the top of first spacing ring 31 and second spacing ring 38 surface, movable mounting has reinforcing screw 46 in the inner wall of fixed orifices 45, nut 47 is installed to the right side screw thread of reinforcing screw 46 surface, pass reinforcing screw 46 fixed orifices 45 on first spacing ring 31 and the fixed orifices 45 on the second spacing ring 38, and at terminal rotatory fixation nut 47, until nut 47 and second spacing ring 38 laminating, through the two sets of spacing rings of reinforcing screw 46 structure cooperation that set up, can further increase the overall structure intensity of rig connection piece 1 and drilling rod body 2 junction, the relative smooth silk phenomenon that rotates appears in the helicitic texture of avoiding rig connection piece 1 and drilling rod body 2 junction when rotating, this kind of connection structure installation is simple and convenient, and further strengthened overall structure stability.

The working principle is as follows: when the drill joining block 1 and the drill rod body 2 are assembled and butted, firstly, the extension pipe 34 is rotated, so that the extension pipe 34 enters the inner wall of the threaded hole 40 in the middle of the left surface of the outward-expanding sleeve 37 until the extension pipe is rotated to the bottommost part, at the moment, the first sealing ring 33 and the third sealing ring 41 are tightly attached to each other to form a first sealing structure, at the same time, the second sealing ring 36 on the outer side of the right surface of the extension pipe 34 and the fourth sealing gasket 44 in the inner wall of the outward-expanding sleeve 37 are attached to each other to form a second sealing structure, at the moment, the drill joining block 1 and the drill rod body 2 are fixed with the threaded hole 40 through the threaded joining groove 35 on the extension pipe 34, then, the reinforcing sleeve 42 is rotated, and under the action of the inner thread and the second threaded groove 39, the reinforcing sleeve 42 moves towards the left side, until the reinforcing sleeve 42 is in threaded connection with the first thread groove 32, the reinforcing sleeve 42 continues to rotate until the reinforcing sleeve is abutted against the first limiting ring 31, at the moment, the reinforcing sleeve 42 is positioned at the outer side of the joint of the drill joining block 1 and the drill rod body 2 to form a wrapping covering structure, the overall structural strength of the joint is increased, then, the reinforcing screw 46 penetrates through the fixing hole 45 on the first limiting ring 31 and the fixing hole 45 on the second limiting ring 38, the fixing nut 47 is rotated at the tail end until the nut 47 is attached to the second limiting ring 38, at the moment, the fixed connection is completed, the design avoids the phenomenon that the thread structure at the joint of the drill joining block 1 and the drill rod body 2 rotates to cause relative rotation and thread slipping, the joining structure is simple and convenient to install, and the overall structural stability is further enhanced.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. An oil drill pipe female adapter comprises a drill machine connecting block (1); the method is characterized in that: the utility model discloses a drilling machine, including rig joining block (1), drill pipe body (2), the rig joins in marriage the junction of piece (1) and drill pipe body (2) and is provided with reinforcement coupling assembling (3), reinforcement coupling assembling (3) include first spacing ring (31), first spacing ring (31) fixed mounting is on the middle part right side of rig joining block (1) surface, the right side of first spacing ring (31) is provided with first thread groove (32) of seting up on rig joining block (1) surface, the outside fixed mounting of rig joining block (1) right side surface has first sealing ring (33), the middle part fixed mounting of rig joining block (1) right side surface has extension pipe (34), the outside of extension pipe (34) has seted up thread joining groove (35) on the surface, the outside fixed mounting of extension pipe (34) right side surface has second sealing ring (36).

2. The oil drill pipe female joint according to claim 1, wherein: the left side fixed mounting of drilling rod body (2) surface has outer expanding sleeve (37), the right side fixed mounting who expands sleeve (37) surface has second spacing ring (38) outward, the left side of second spacing ring (38) is provided with sets up second thread groove (39) on expanding sleeve (37) surface outward, second thread groove (39) are the same with first thread groove (32) size shape, the outside screw thread of second thread groove (39) is installed with internal thread reinforcing sleeve (42), the outside fixed mounting who expands sleeve (37) left surface outward has third sealing ring (41).

3. The oil drill pipe female joint according to claim 2, wherein: the middle part of the left surface of the external expansion sleeve (37) is provided with a threaded hole (40), and the external expansion sleeve (37) and the extension pipe (34) are fixed through the mutual matching and screwing of the threaded hole (40) and the thread joining groove (35).

4. The oil drill pipe female joint according to claim 2, wherein: expand sleeve (37) inner wall's middle part right side fixed mounting outward has annular lug (43), the left surface fixed mounting of annular lug (43) has fourth sealed pad (44).

5. The oil drill pipe female joint according to claim 1, wherein: and a group of fixing holes (45) are formed in the bottom and the top of the outer surfaces of the first limiting ring (31) and the second limiting ring (38).

6. The threaded joint in petroleum drill pipe according to claim 5, wherein: the inner wall of the fixed hole (45) is movably provided with a reinforcing screw (46), and a nut (47) is arranged on the right side thread of the outer surface of the reinforcing screw (46).