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Waterproof guide pipe special threaded male connector for marine drill

A technology of riser and special thread is applied in the threaded connection structure. The marine drill adopts the special thread male joint of the riser, which can solve the problems that the sealing performance, connection strength and torsion resistance cannot meet the mining environment conditions, etc. The effect of enhancing the sealing performance and ensuring the sealing effect

Inactive Publication Date: 2018-04-17
TIANJIN DEHUA GASOLINEEUM EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common joints cannot meet the needs of oil and gas wells with harsh environmental conditions in terms of sealing, connection strength and torsion resistance.

Method used

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  • Waterproof guide pipe special threaded male connector for marine drill
  • Waterproof guide pipe special threaded male connector for marine drill
  • Waterproof guide pipe special threaded male connector for marine drill

Examples

Experimental program
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Embodiment

[0025] Such as figure 1 , figure 2 , image 3 As shown, the embodiment of the present invention discloses a special threaded joint for a marine drill using a water riser conduit, which is arranged at both ends of the water riser conduit, including an internal threaded joint 1 and an external threaded joint 3, and the joints at both ends are connected to the conduit in the form of butt welding. connected with each other, the outer diameter of the inner threaded joint 1 and the outer threaded joint 3 are the same, and the same as the outer diameter of the riser conduit. Because the outer diameter is the same, compared with the joint with shoulder structure, the frictional resistance of the outer wall of the conduit is smaller. It makes it easier for the conduit to be hammered into the effective depth, and enhances the adhesion of the formation to the outer wall of the conduit, correspondingly increasing the weight that the conduit can support, and at the same time improving th...

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PUM

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Abstract

The invention provides a special threaded male joint of a water riser used in an ocean drill. The male joint is connected to the pipe in a welded form and has the same outer diameter as the outer diameter of the water riser. The threaded end of the male joint is provided with a The elastic sealing structure includes a sealing ring groove and an O-ring sealing ring, and the O-ring sealing ring is arranged in the sealing ring groove; the front end of the male joint is provided with an external thread sealing cone surface and an internal torque shoulder. In the present invention, the internal threaded joint is provided with a sealing slope and the O-shaped sealing ring structure of the external threaded joint, which is always in an interference fit during use, and the auxiliary sealing effect is enhanced by using the elastic seal; the internal torque shoulder and the external threaded joint are provided on the internal threaded joint The interference fit of the external torque shoulder is set, which enhances the torque resistance and improves the connection strength.

Description

technical field [0001] The invention belongs to the technical field of drilling equipment for oil exploitation, and relates to the screw connection structure technology of drilling equipment, in particular to a special threaded male joint of a water-resisting conduit used in marine drilling. Background technique [0002] Riser is a kind of equipment used in offshore oil drilling operations. The main function is to establish a drilling fluid circulation channel during drilling to support the weight of the casing and the wellhead Christmas tree. The entry method is generally divided into drilling type and hammer entry type. [0003] In the development of oil and gas fields, the hammer-in type is often used. There are generally two connection methods for the hammer-in type water riser: (1) One is the welding method. The advantage is that the outer diameter of the joint is the same as that of the pipe, which is convenient for the pipe. Hammering and ensuring the adhesion of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/08
CPCE21B17/085
Inventor 张国辉
Owner TIANJIN DEHUA GASOLINEEUM EQUIP MFG