CN218376355U

CN218376355U - Small-outer-diameter high-strength air-tight drill pipe joint for oil field drilling

Info

Publication number: CN218376355U
Application number: CN202222350750.4U
Authority: CN
Inventors: 包志伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-05
Filing date: 2022-09-05
Publication date: 2023-01-24
Anticipated expiration: 2032-09-05

Abstract

The utility model discloses an airtight tool joint of little external diameter high strength for oil field well drilling relates to oil field tool joint field, including the drilling rod body, the one end fixedly connected with of drilling rod body connects the body, the one end that the drilling rod body is close to the joint body is connected with the rubber circle, the utility model discloses a set up drilling rod body, joint body, rubber circle, first clamping ring, second clamping ring, sealing washer, carriage and locating frame, utilize setting up of rubber circle to satisfy the stability of joint body in the connection, utilize setting up of first clamping ring, second clamping ring and sealing washer to satisfy the leakproofness of joint body in the connection simultaneously, avoid because joint strength is low, gas sealing performance is poor, lead to gaseous inflow easily when the bottom during operation, cause the condition that tool joint damages, be favorable to improving the holistic airtight when connecting body, improve the security when connecting the body and use, be favorable to improving the life of joint body.

Description

Small-outer-diameter high-strength air-tight drill pipe joint for oil field drilling

Technical Field

The utility model relates to an oil field tool joint field, concretely relates to airtight tool joint of little external diameter high strength for oil field drilling.

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 at the bottom end of a drilled well. The purpose of the drill pipe is to carry drilling mud to the drill bit and, together with the drill bit, raise, lower or rotate the bottom hole assembly. The drill pipe must be able to withstand large internal and external pressures, twists, bends and vibrations. In the process of exploiting and refining oil gas, a drill rod can be used repeatedly, in petroleum, natural gas and geological drilling, the drill rod is not only connected with ground power equipment and a downhole drilling tool, but also is a channel for transmitting drilling fluid, and the drill rod is often connected through a drill rod joint, so that the drill rod joint becomes a weak link of the whole drill string.

The drill rod joint is a threaded joint for connecting drill rods, the drill rod joint and the drill rods rotate and transmit and bear larger torque load in drilling, so that the requirement on the torsion resistance of the drill rod joint is high, chinese patent discloses a drill rod joint with high torsion resistance and high toughness (No. CN 211777250U), the technical structure of the patent is reasonable in design, the torsion resistance is improved in connection and use, the drill rod joint is made of cobalt-containing steel and is high in toughness and suitable for popularization and use, however, most of the conventional universal drill rod joints used in oil fields are single-stage metal sealing structures, the connection strength is low, the air tightness is poor, gas can easily flow in the bottom working process, the damage condition of the drill rod joint is caused, the service life of the drill rod joint for oil field drilling is shortened, the damage and deformation conditions of the conventional drill rod joint in the working process are easy to occur due to poor strength of the conventional drill rod joint, the working efficiency of the oil field drilling is reduced, and the use rate of the drill rod joint is reduced. Accordingly, one skilled in the art has provided a small-outer-diameter high-strength airtight tool joint for oilfield drilling to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a small-outer-diameter high-strength air-tight drill rod joint for oil field drilling, which comprises a drill rod body, wherein one end of the drill rod body is fixedly connected with a joint body, one end of the drill rod body, which is close to the joint body, is connected with a rubber ring, the outer surface of the drill rod body is clamped with a first connecting ring, one end of the first connecting ring is hinged with a second connecting ring, and one sides of the first connecting ring and the second connecting ring are both fixedly connected with a sealing ring;

the one end fixedly connected with carriage of articulated department with the second coupling ring is kept away from to first coupling ring, the one end fixedly connected with locating frame of articulated department with first coupling ring is kept away from to the second coupling ring, the inside sliding connection of carriage has positioning mechanism, connect the inside lateral wall fixedly connected with enhancement layer of body, connect the inside one side fixedly connected with sealing layer that is located the enhancement layer of body.

Preferably, the following components: positioning mechanism includes the slide bar of sliding connection in the inside both sides of connecting frame, two be connected with the spring between the lateral wall of slide bar, two the equal fixedly connected with locating piece of one end of slide bar.

Preferably, the following components: the locating slot has been seted up to the inside of locating frame, the size of slide bar and the inside size looks adaptation of seting up the locating slot of locating frame.

Preferably: locating holes are formed in the two sides of the locating groove, and the size of the locating block is matched with the size of the locating hole formed in the side wall of the locating groove.

Preferably: the connecting frame is internally provided with a sliding chute, and the size of the sliding rod is matched with the size of the sliding chute arranged in the connecting frame.

Preferably: the enhancement layer is made for elastic material, and the outer wall surface is provided with wear-resisting protruding line, the sealing layer is one of polyimide or polyether ether copper constitution.

The utility model discloses a technological effect and advantage:

1. through setting up the drilling rod body, connect the body, the rubber circle, first clamping ring, the second clamping ring, the sealing washer, connection frame and posting, utilize setting up of rubber circle to satisfy the stability of joint body in the connection, utilize first clamping ring simultaneously, setting up of second clamping ring and sealing washer satisfies the leakproofness of joint body in the connection, avoid because joint strength is low, gas sealing performance is poor, lead to gaseous inflow easily in the bottom during operation, cause the condition that the drilling rod connects the damage, holistic airtight when being favorable to improving and connecting this body coupling, improve the security when connecting the body and using, be favorable to improving the life who connects the body.

2. Through setting up the drilling rod body, connect the body, enhancement layer and sealing layer, the setting that utilizes enhancement layer and sealing layer satisfies the security of connecting the body when using, avoid because drilling rod joint is relatively poor because self intensity when using, the condition of deformation appears damaging in the course of the work easily to reduce the work efficiency of oil field well drilling, be favorable to improving drilling rod joint whole self intensity when using, the security when improving drilling rod joint and using, be favorable to improving the work efficiency of oil field well drilling simultaneously.

Drawings

FIG. 1 is a schematic three-dimensional structure of the subject matter provided by an embodiment of the present application;

FIG. 2 is a schematic view of the connection relationship between a first connecting ring, a second connecting ring and a rubber ring in the subject matter provided by the embodiment of the present application;

FIG. 3 is a schematic diagram of the internal structure of a connection box in the subject matter provided by the embodiments of the present application;

FIG. 4 is a schematic view of the internal structure of a fitting body of the subject matter provided by an embodiment of the present application;

in the figure:

1. a drill rod body; 2. a connector body; 3. a rubber ring; 4. a first connecting ring; 5. a second connecting ring; 6. a seal ring; 7. a connecting frame; 8. a positioning frame; 9. a slide bar; 10. positioning a block; 11. a spring; 12. a reinforcing layer; 13. and (4) sealing the layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Example 1

Referring to fig. 1 to 4, the present embodiment provides a small-outer-diameter high-strength airtight drill pipe joint for oilfield drilling, including a drill pipe body 1, wherein one end of the drill pipe body 1 is fixedly connected with a joint body 2, one end of the drill pipe body 1 close to the joint body 2 is connected with a rubber ring 3, a first connecting ring 4 is clamped on the outer surface of the drill pipe body 1, one end of the first connecting ring 4 is hinged with a second connecting ring 5, and one side of each of the first connecting ring 4 and the second connecting ring 5 is fixedly connected with a sealing ring 6;

one end of the first connecting ring 4, which is far away from the hinge joint with the second connecting ring 5, is fixedly connected with a connecting frame 7, one end of the second connecting ring 5, which is far away from the hinge joint with the first connecting ring 4, is fixedly connected with a positioning frame 8, a positioning mechanism is slidably connected inside the connecting frame 7, a reinforcing layer 12 is fixedly connected to the side wall inside the joint body 2, and a sealing layer 13 is fixedly connected to one side, which is positioned on the reinforcing layer 12, inside the joint body 2;

rubber circle 3 be provided with and do benefit to the leakproofness that improves joint body 2 when using, utilize the setting of enhancement layer 12 and sealing layer 13 to be favorable to improving the security that connects body 2 when using simultaneously, first clamping ring 4 and second clamping ring 5 are connected through inside positioning mechanism and the locating frame 8 that is provided with of carriage 7 simultaneously, utilize setting up of sealing washer 6 to satisfy joint body 2 and other article and carry out the stability of being connected.

Positioning mechanism includes sliding connection at the slide bar 9 of the inside both sides of connecting frame 7, is connected with spring 11 between the lateral wall of two slide bars 9, and the equal fixedly connected with locating piece 10 of one end of two slide bars 9 moves slide bar 9 and drives locating piece 10 after the in-process extrusion spring 11 and remove to satisfy being connected between connecting frame 7 and the posting 8.

The locating slot is arranged in the locating frame 8, the size of the slide rod 9 is matched with the size of the locating slot arranged in the locating frame 8, and the locating slot is arranged to enable the slide rod 9 to drive the locating block 10 to slide in the locating frame 8.

The locating hole has all been seted up to the both sides of constant head tank, and the size of locating piece 10 and the size looks adaptation that the locating hole was seted up to the constant head tank lateral wall, and the setting of locating hole satisfies slide bar 9 inside the slip back of locating frame 8, and locating piece 10 joint is in the inside of locating hole to satisfy being connected between linking frame 7 and the locating frame 8.

The connecting frame 7 is internally provided with a sliding chute, the size of the sliding rod 9 is matched with the size of the sliding chute arranged in the connecting frame 7, and the sliding chute is arranged to enable the sliding rod 9 to slide in the connecting frame 7 after extruding the spring 11.

Example 2

Referring to fig. 1 and 4, in the present embodiment,

the enhancement layer 12 is made for elastic material, and the outer wall surface is provided with wear-resisting protruding line, utilizes wear-resisting protruding line to play wear-resisting effect when satisfying the enhancement of joint body 2, and sealing layer 13 is one of them constitution of polyimide or polyether ether copper, can play good sealed effect.

The utility model discloses a theory of operation is:

when the drill rod joint is used, when the joint body 2 is connected with other objects, the sealing performance of the joint body 2 in the connection process is met by the arrangement of the rubber ring 3, and meanwhile, the safety and the sealing performance of the joint body 2 in the use process are met by the arrangement of the reinforcing layer 12 and the sealing layer 13, so that the condition that the drill rod joint is easy to damage and deform in the working process due to poor strength of the drill rod joint in the use process is avoided, and the service life of the drill rod joint is prolonged;

when the connector body 2 is connected with other objects, the sliding rod 9 is pushed to extrude the spring 11 to drive the positioning block 10 to move, the positioning block 10 slides out from the side wall inside the positioning frame 8, the second connecting ring 5 is rotated afterwards, the effect of detaching the first connecting ring 4 and the second connecting ring 5 from the drill rod body 1 is met, the first connecting ring 4 and the second connecting ring 5 are connected to the outer surface of the drill rod body 1 at proper positions afterwards, the pushing of the sliding rod 9 is loosened, the spring 11 rebounds to drive the positioning block 10 to reset, so that the two sides inside the positioning frame 8 are entered, the sealing ring 6 is utilized to meet the sealing effect on the connector body 2, and the whole sealing performance of the connector body 2 during use is improved.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art and related fields without creative efforts shall fall within the protection scope of the present invention. Structures, devices and methods of operation not specifically described or illustrated in the present application are not specifically illustrated or described, but are generally practiced in the art without limitation.

Claims

1. The small-outer-diameter high-strength air-tight drill rod joint for oilfield drilling comprises a drill rod body (1) and is characterized in that one end of the drill rod body (1) is fixedly connected with a joint body (2), one end, close to the joint body (2), of the drill rod body (1) is connected with a rubber ring (3), a first connecting ring (4) is clamped on the outer surface of the drill rod body (1), one end of the first connecting ring (4) is hinged with a second connecting ring (5), and one sides of the first connecting ring (4) and the second connecting ring (5) are fixedly connected with a sealing ring (6);

keep away from one end fixedly connected with carriage (7) with articulated department of second coupling ring (5) in first coupling ring (4), one end fixedly connected with locating frame (8) with articulated department of first coupling ring (4) are kept away from in second coupling ring (5), the inside sliding connection of carriage (7) has positioning mechanism, connect inside lateral wall fixedly connected with enhancement layer (12) of body (2), connect inside one side fixedly connected with sealing layer (13) that is located enhancement layer (12) of body (2).

2. The small-outer-diameter high-strength air-tight drill pipe joint for oilfield drilling according to claim 1, wherein the positioning mechanism comprises slide rods (9) slidably connected to two sides inside the connecting frame (7), a spring (11) is connected between the side walls of the two slide rods (9), and a positioning block (10) is fixedly connected to one end of each of the two slide rods (9).

3. The small-outer-diameter high-strength airtight drill pipe joint for oilfield drilling as defined by claim 2, wherein the positioning frame (8) is provided with positioning grooves therein, and the slide rod (9) is sized to fit the positioning grooves provided in the positioning frame (8).

4. The small-outer-diameter high-strength airtight drill pipe joint for oilfield drilling as defined by claim 3, wherein the locating slot is provided with locating holes on both sides thereof, and the size of the locating block (10) is matched with the size of the locating hole on the side wall of the locating slot.

5. The small-outer-diameter high-strength air-tight drill pipe joint for oilfield drilling as defined by claim 2, wherein the connecting frame (7) is internally provided with a sliding groove, and the size of the sliding rod (9) is matched with the size of the sliding groove arranged inside the connecting frame (7).

6. The small-outer-diameter high-strength air-tight seal drill pipe joint for oilfield drilling according to claim 1, wherein the reinforcement layer (12) is made of an elastic material, the outer wall surface of the reinforcement layer is provided with wear-resistant raised grains, and the seal layer (13) is made of one of polyimide or polyether ether copper.