CN204729022U - A kind of multi-point support type ocean drill rod threaded nipple - Google Patents

Abstract

A kind of multi-point support type ocean drill rod threaded nipple, comprises male connection and female adapter; Described male connection and female adapter are threaded; The outside of described female adapter is provided with the first annular end face; The outside of described male connection is provided with the second annular end face; The second described annular end face is fixed with strip component; Described strip component one end is vertically fixed on the second annular end face; The other end of described strip component is conflicted on the first annular end face.When male connection is connected by screw thread rotation with female adapter, on the second annular end face, vertically disposed strip component end is against on the first annular end face.When bearing the combined loads such as torsion, tension and compression, bending, vibration when drilling rod, strip component can play the effect strengthening supporting, and makes the connection of drill rod threaded nipple more firm.

Description

A multi-point support type marine drill pipe threaded joint

technical field

The utility model relates to a threaded joint structure.

Background technique

Oil drill pipe is the main equipment for oil and gas exploration and exploitation. Oil and gas well operations rely on the drill pipe to transmit the torque between the uphole and the downhole, and deliver drilling fluid and mud to the well; when the oil drill pipe is drilling, it mainly bears complex loads such as torsion, compression, bending, and vibration. Once the drill pipe fails and breaks, not only the drill pipe will be scrapped, but also it will take a lot of time to find and replace the failed drill pipe, which will seriously affect the normal drilling operation and cause significant economic losses to the production of oil and gas fields. Therefore, it is necessary to develop a multi-point support type marine drill pipe threaded joint.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the utility model solves the problem that the threaded joint of the drill pipe is not firm.

In order to solve the problems referred to above, the technical scheme that the utility model takes is as follows:

A multi-point support type marine drill pipe threaded joint, including an external threaded joint and an internal threaded joint; the external threaded joint and the internal threaded joint are threaded; the outer side of the internal threaded joint is provided with a first annular end face; the The outside of the externally threaded joint is provided with a second annular end face; a strip member is fixed on the second annular end face; one end of the strip member is vertically fixed on the second annular end face; the other end of the strip member One end is in contact with the first annular end face.

Further, a limiting groove is provided on the first annular end surface; the elongated member is embedded in the limiting groove.

Further, there are four elongated members and four limiting grooves respectively.

Further, the limiting grooves are evenly distributed on the first annular end surface; the elongated members are evenly distributed on the second annular end surface.

Further, the elongated member has a cylindrical structure; the limiting groove has a cylindrical structure.

Beneficial effects of the utility model

A first annular end surface is provided on the outer side of the internal threaded joint, a second annular end surface is provided on the outer side of the external threaded joint, and a strip member is vertically provided on the second annular end surface. When the externally threaded joint and the internally threaded joint are connected by thread rotation, the end of the elongated member vertically arranged on the second annular end surface abuts against the first annular end surface. When the drill pipe is subjected to compound loads such as torsion, tension and compression, bending, vibration, etc., the long member can strengthen the support and make the connection of the threaded joint of the drill pipe more firm.

Description of drawings

Fig. 1 is a schematic diagram of a disassembled three-dimensional structure of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model content is described in further detail.

As shown in FIG. 1 , a multi-point support type marine drill pipe threaded joint includes an external threaded joint 2 and an internal threaded joint 1 . Both the externally threaded joint 2 and the internally threaded joint 1 have a cylindrical structure in this embodiment. The external thread joint 2 is threadedly connected with the internal thread joint 1. A first annular end surface 12 is provided on the outer side of the internally threaded joint 1 . The outer side of the externally threaded joint 2 is provided with a second annular end surface 21 . A strip member 22 is fixed on the second annular end surface 21 . One end of the strip member 22 is vertically fixed on the second annular end face 21 . The other end of the elongated member 22 is in contact with the first annular end surface 12 . Further preferably, a limiting groove 11 is provided on the first annular end surface 12 . The elongated member 22 is embedded in the limiting groove 11 . Further preferably, there are four strip members 22 and four limiting grooves 11 respectively. Further preferably, the limiting grooves 11 are evenly distributed on the first annular end surface 12 . The elongated members 22 are evenly distributed on the second annular end surface 21 . Further preferably, the elongated member 22 has a cylindrical structure; the limiting groove 11 has a cylindrical structure.

A first annular end surface 12 is provided outside the internally threaded joint 1 , a second annular end surface 21 is provided outside the externally threaded joint 2 , and a strip member 22 is vertically provided on the second annular end surface 21 . When the externally threaded joint 2 and the internally threaded joint 1 are connected by thread rotation, the end of the elongated member 22 vertically arranged on the second annular end surface 21 abuts against the first annular end surface 12 . When the drill pipe is subjected to complex loads such as torsion, tension and compression, bending, vibration, etc., the long member 22 can play a role in strengthening the support, making the connection of the threaded joint of the drill pipe more firm.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (5)

1. A multi-point support type marine drill pipe threaded joint, comprising an external threaded joint and an internal threaded joint; the external threaded joint and the internal threaded joint are threaded; it is characterized in that the outside of the internal threaded joint is provided with The first annular end surface; the outer side of the externally threaded joint is provided with a second annular end surface; a strip member is fixed on the second annular end surface; one end of the strip member is vertically fixed on the second annular end surface; The other end of the elongated member is in contact with the first annular end surface. 2. The drill pipe threaded joint according to claim 1, wherein a limiting groove is provided on the first annular end surface; and the elongated member is embedded in the limiting groove. 3. The drill pipe threaded joint according to claim 2, characterized in that there are four elongated members and four limiting grooves respectively. 4. The drill pipe threaded joint according to claim 3, wherein the limiting grooves are evenly distributed on the first annular end surface; and the elongated members are evenly distributed on the second annular end surface. 5. The drill pipe threaded joint according to claim 4, characterized in that, the elongated member is in a cylindrical structure; the limiting groove is in a cylindrical structure.