CN216841470U

CN216841470U - Corrosion-resistant oil drill pipe

Info

Publication number: CN216841470U
Application number: CN202220353237.8U
Authority: CN
Inventors: 蒋存民; 黄海春; 蒋鹏; 张震宁
Original assignee: JIANGSU SHUGUANG HUAYANG DRILLING TOOL CO Ltd
Current assignee: JIANGSU SHUGUANG HUAYANG DRILLING TOOL CO Ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-06-28
Anticipated expiration: 2032-02-21

Abstract

The utility model discloses a corrosion-resistant oil drill pipe, which comprises a drill pipe body, wherein a corrosion-resistant jacket layer is fixedly sleeved on the outer edge of the drill pipe body, a connecting component is arranged on the drill pipe body, and a fastening component and a sleeving mechanism are also arranged on the drill pipe body; coupling assembling includes a fastening section of thick bamboo, a plurality of spacer and a plurality of screw thread section, a fastening section of thick bamboo fixed connection is in the one end of drilling rod body, and is a plurality of the equal fixed connection of spacer is at the other end of drilling rod body, one of them the screw thread section is seted up in the inner face of a fastening section of thick bamboo, and all the other a plurality of the side at a plurality of spacers is seted up respectively to the screw thread section. The utility model discloses replaced traditional drilling rod connected mode, the inserted block can share the torsion that a plurality of screw thread sections received with a plurality of fixture blocks, strengthens the joint strength between two drilling rod bodies, avoids the too big and cracked condition of junction that appears the drilling rod body of screw thread section atress to take place, improves the bulk strength of drilling rod.

Description

Corrosion-resistant oil drill pipe

Technical Field

The utility model relates to an oil drill pipe technical field especially relates to a corrosion-resistant oil drill pipe.

Background

The drill pipe for oil drilling is manufactured according to API standard, the general structure of the drill pipe is that a drill pipe male joint and a drill pipe female joint are respectively welded at two ends of a drill pipe body, and the male joint and the female joint are screwed together through self thread structures.

When carrying out oil and digging, need use the oil drill pipe, the oil drill pipe joint device in the oil drilling field that uses at present passes through threaded connection, and only relies on the screw thread to share stress at the in-process of well drilling, leads to the drilling rod to break easily, leads to work unable to go on, and it is troublesome to change, waste time, and increased the cost, so, need design a corrosion-resistant oil drill pipe and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a corrosion-resistant oil drill pipe.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a corrosion-resistant oil drill rod comprises a drill rod body, wherein a corrosion-resistant sleeve layer is fixedly sleeved on the outer edge of the drill rod body, a connecting assembly is arranged on the drill rod body, and a fastening assembly and a sleeving mechanism are further arranged on the drill rod body;

coupling assembling includes a fastening section of thick bamboo, a plurality of spacer and a plurality of screw thread section, a fastening section of thick bamboo fixed connection is in the one end of drilling rod body, and is a plurality of the equal fixed connection of spacer is at the other end of drilling rod body, one of them the screw thread section is seted up in the inner face of a fastening section of thick bamboo, and all the other a plurality of the side at a plurality of spacers is seted up respectively to the screw thread section.

As a preferred technical scheme of the utility model, fastening components includes inserted block, draw-in groove and a plurality of fixture block, inserted block fixed connection is in the one end of drilling rod body, and inserted block and fastening section of thick bamboo are located the same one end of drilling rod body, the outer fringe at the inserted block is seted up to the draw-in groove, and is a plurality of fixture block fixed connection is in the side of a plurality of spacers respectively, and a plurality of fixture blocks all are located the draw-in groove.

As a preferred technical scheme of the utility model, the coupling mechanism includes sleeve and a plurality of bolt, the sleeve cover is established in the one end of drilling rod body, and is a plurality of the bolt all passes the sleeve to the screw thread cup joints on the drilling rod body.

As a preferred technical scheme of the utility model, the cross-section of fastening section of thick bamboo comprises leveling portion and rake, leveling portion and rake structure as an organic whole, the rake is the right triangle structure.

As an optimal technical scheme of the utility model, it is a plurality of the spacer is equidistant fixed connection in the one end of drilling rod body of circumference.

As a preferable technical solution of the present invention, the smaller angle of the inclined portion is α, and α is 3 ° to 5 °.

As a preferred technical scheme of the utility model, the draw-in groove is loop configuration, and the one end of draw-in groove and the side of inserted block form the opening, and is a plurality of the fixture block all is provided with the inclined plane with draw-in groove looks adaptation.

The utility model discloses following beneficial effect has:

1. by arranging the connecting assembly and the fastening assembly, when the whole drill rod formed by the plurality of drill rod bodies is stressed, the inserting block and the plurality of clamping blocks can share the torsion force applied to the plurality of thread sections, so that the connection strength between the two drill rod bodies is enhanced, the situation that the connection part of the drill rod bodies is broken due to the overlarge stress of the thread sections is avoided, and the overall strength of the drill rod is improved;

2. by arranging the sleeve connection mechanism, the sleeve can also play a role in protecting the connection part of the two drill rod bodies, slow down the corrosion rate of the fastening cylinder and the positioning pieces, and simultaneously prolong the structural strength of the connection part of the two drill rod bodies so as to prolong the service life of the whole drill rod;

3. through setting up corrosion-resistant jacket layer, can improve the corrosion resisting property of drilling rod body, play the guard action to the drilling rod body, further prolong the life of drilling rod.

Drawings

Fig. 1 is a schematic structural view of a corrosion-resistant oil drill pipe provided by the present invention;

FIG. 2 is a partial enlarged view of a corrosion resistant oil drill pipe according to the present invention;

FIG. 3 is an enlarged view of the structure at the position A of the corrosion-resistant oil drill pipe provided by the present invention;

fig. 4 is a side view of a corrosion-resistant oil drill pipe according to the present invention;

fig. 5 is a cross-sectional view of a fastening cylinder in a corrosion-resistant oil drill pipe according to the present invention.

In the figure: the drill pipe comprises a drill pipe body 1, a corrosion-resistant sleeve layer 2, a connecting assembly 3, a fastening barrel 31, a positioning piece 32, a threaded section 33, a fastening assembly 4, an insertion block 41, a clamping groove 42, a clamping block 43, a flat part 311, an inclined part 312, a socket mechanism 5, a sleeve 51 and a bolt 52.

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.

Referring to fig. 1-5, a corrosion-resistant oil drill rod comprises a drill rod body 1, wherein a corrosion-resistant jacket layer 2 is fixedly sleeved on the outer edge of the drill rod body 1, the corrosion resistance of the drill rod body 1 can be improved by arranging the corrosion-resistant jacket layer 2, the drill rod body 1 is protected, the service life of the drill rod is further prolonged, a connecting assembly 3 is arranged on the drill rod body 1, and a fastening assembly 4 and a sleeving mechanism 5 are further arranged on the drill rod body 1;

the connecting assembly 3 comprises a fastening barrel 31, a plurality of positioning pieces 32 and a plurality of thread sections 33, the fastening barrel 31 is fixedly connected to one end of the drill rod body 1, the positioning pieces 32 are fixedly connected to the other end of the drill rod body 1, one thread section 33 is arranged on the inner face of the fastening barrel 31, and the thread sections 33 are arranged on the side faces of the positioning pieces 32 respectively.

Referring to fig. 3, the fastening assembly 4 includes an insert block 41, a slot 42 and a plurality of fixture blocks 43, the insert block 41 is fixedly connected to one end of the drill rod body 1, and the insert block 41 and the fastening cylinder 31 are located at the same end of the drill rod body 1, the slot 42 is provided at the outer edge of the insert block 41, the fixture blocks 43 are respectively and fixedly connected to the side surfaces of the positioning pieces 32, the fixture blocks 43 are located in the slot 42, through the fastening assembly 4, the insert block 41 and the fixture blocks 43 can share the torsion force received by the thread sections 33, the connection strength between the two drill rod bodies 1 is enhanced, and the situation that the connection part of the drill rod body 1 is broken due to the excessive stress of the thread sections 33 is avoided.

Referring to fig. 2, the coupling mechanism 5 includes sleeve 51 and a plurality of bolt 52, the one end at drilling rod body 1 is established to sleeve 51 cover, a plurality of bolts 52 all pass sleeve 51, and the screw thread cup joints on drilling rod body 1, through setting up coupling mechanism 5, sleeve 51 can also play the guard action to the junction of two drilling rod bodies 1, slow down the rate of corrosion that receives of a fastening section of thick bamboo 31 and a plurality of spacer 32, prolong the structural strength of two drilling rod body 1 junctions simultaneously, and then prolong the holistic life of drilling rod.

Referring to fig. 5, the cross section of the fastening cylinder 31 is composed of a flat part 311 and an inclined part 312, the flat part 311 and the inclined part 312 are integrated, and the inclined part 312 is a right triangle structure, so that the fastening cylinder 31 can extrude the plurality of positioning pieces 32 when two drill rod bodies 1 are screwed, and the plurality of positioning pieces 32 can be gathered.

Referring to fig. 4, a plurality of positioning pieces 32 are fixedly connected to one end of the drill rod body 1 at equal intervals in the circumferential direction.

Referring to fig. 5, a smaller angle of the inclined portion 312 is α, and α is 3 ° to 5 °.

Referring to fig. 3, the locking groove 42 is an annular structure, an opening is formed between one end of the locking groove 42 and the side surface of the insertion block 41, and the plurality of locking blocks 43 are provided with inclined surfaces adapted to the locking groove 42.

The utility model discloses a concrete theory of operation as follows:

when two drill rod bodies 1 are connected, a constructor can align one end of one drill rod body 1 with a fastening cylinder 31 with one end of the other drill rod body 1 with a plurality of positioning sheets 32, so that the plurality of positioning sheets 32 are clamped at the cylinder opening of the fastening cylinder 31, and rotate one drill rod body 1 to enable the two drill rod bodies 1 to relatively rotate, under the meshing action of a plurality of thread sections 33, the plurality of positioning sheets 32 can be gradually screwed into the fastening cylinder 31, in the process, the inclined part 312 of the fastening cylinder 31 can extrude the plurality of positioning sheets 32, so that the plurality of positioning sheets 32 are deformed and gathered together, when the two drill rod bodies 1 are connected, an insert block 41 at one end of one drill rod body 1 can also be inserted into the plurality of positioning sheets 32, and a clamping block 43 at the side surface of the plurality of positioning sheets 32 can be clamped into a clamping groove 42 on the insert block 41, before the two drill rod bodies 1 are screwed, a plurality of spacers 32 are in the state of not gathering together, although a plurality of fixture blocks 43 have gone into in the draw-in groove 42 this moment, but do not support tightly each other with the inner face of draw-in groove 42, when screwing two drilling rod bodies 1 extreme condition, a plurality of spacers 32 can gather together completely, a plurality of fixture blocks 43 can tightly laminate the inner face at draw-in groove 42 this moment, then, constructor establishes the junction at two drilling rod bodies 1 to sleeve 51 cover, and fix sleeve 51 through a plurality of bolts 52, can accomplish the connection to two drilling rod bodies 1.

After accomplishing above-mentioned operation, the card that a plurality of fixture blocks 43 on the spacer 32 can be fastened is in draw-in groove 42, screw thread section 33 on the fastening section 31 also can be in the same place with the meshing of the screw thread section 33 fastening on a plurality of spacers 32, when the whole atress of the drilling rod that constitutes jointly by a plurality of drilling rod bodies 1, the inserted block 41 can share the torsion that a plurality of screw thread sections 33 received with a plurality of fixture blocks 43, strengthen the joint strength between two drilling rod bodies 1, avoid screw thread section 33 atress too big and the cracked condition of junction that appears drilling rod body 1 to take place, improve the bulk strength of drilling rod, secondly, sleeve 51 can also play the guard action to the junction of two drilling rod bodies 1, slow down the rate of corrosion that receives of fastening section 31 and a plurality of spacers 32, prolong the structural strength of two drilling rod body 1 junctions simultaneously, and then prolong the holistic life of drilling rod.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The corrosion-resistant oil drill pipe comprises a drill pipe body (1) and is characterized in that a corrosion-resistant sleeve layer (2) is fixedly sleeved on the outer edge of the drill pipe body (1), a connecting assembly (3) is arranged on the drill pipe body (1), and a fastening assembly (4) and a sleeving mechanism (5) are further arranged on the drill pipe body (1);

coupling assembling (3) are including a fastening section of thick bamboo (31), a plurality of spacer (32) and a plurality of screw thread section (33), a fastening section of thick bamboo (31) fixed connection is in the one end of drilling rod body (1), and is a plurality of the equal fixed connection of spacer (32) is at the other end of drilling rod body (1), one of them screw thread section (33) are seted up in the inner face of a fastening section of thick bamboo (31), and are all the other a plurality of the side at a plurality of spacer (32) is seted up respectively in screw thread section (33).

2. The corrosion-resistant oil drill pipe according to claim 1, wherein the fastening assembly (4) comprises an insert block (41), a clamping groove (42) and a plurality of clamping blocks (43), the insert block (41) is fixedly connected to one end of the drill pipe body (1), the insert block (41) and the fastening cylinder (31) are located at the same end of the drill pipe body (1), the clamping groove (42) is formed in the outer edge of the insert block (41), the clamping blocks (43) are respectively and fixedly connected to the side faces of the positioning pieces (32), and the clamping blocks (43) are located in the clamping groove (42).

3. The corrosion-resistant oil drill pipe according to claim 1, wherein the sleeving mechanism (5) comprises a sleeve (51) and a plurality of bolts (52), the sleeve (51) is sleeved on one end of the drill pipe body (1), and the bolts (52) penetrate through the sleeve (51) and are sleeved on the drill pipe body (1) in a threaded manner.

4. A corrosion-resistant oil drill pipe according to claim 1, characterized in that the cross section of the fastening cylinder (31) is composed of a flat part (311) and an inclined part (312), the flat part (311) and the inclined part (312) are of an integral structure, and the inclined part (312) is of a right-angled triangle structure.

5. A corrosion resistant oil drill pipe according to claim 1, characterized in that a plurality of said spacers (32) are fixedly connected to one end of the drill pipe body (1) at equal intervals in the circumferential direction.

6. A corrosion resistant oil drill pipe according to claim 4, characterized in that the smaller one of the angle angles of the inclined portion (312) is α, and α is 3-5 °.

7. The corrosion-resistant oil drill pipe as claimed in claim 2, wherein the clamping groove (42) is of an annular structure, an opening is formed between one end of the clamping groove (42) and the side surface of the insert block (41), and the clamping blocks (43) are provided with inclined surfaces matched with the clamping groove (42).