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Deepwater petroleum drilling casing pipe joint rotation preventing structure

A technology for drilling casing and oil, which is applied in the field of structural improvement and design of oil drilling tools, which can solve problems such as poor reliability of anti-rotation, and achieve the effects of convenient installation, easy manufacture, and simple embedded structure

Active Publication Date: 2015-04-29
JIANGSU SHUGUANG OIL DRILLING EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly aims at the problem of poor anti-rotation reliability in the prior art, and proposes a anti-rotation structure for deep-sea oil drilling casing joints with simple structure, convenient installation and reliable anti-rotation

Method used

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  • Deepwater petroleum drilling casing pipe joint rotation preventing structure
  • Deepwater petroleum drilling casing pipe joint rotation preventing structure
  • Deepwater petroleum drilling casing pipe joint rotation preventing structure

Examples

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Embodiment Construction

[0017] The present invention will be further described below according to the accompanying drawings and in conjunction with the embodiments.

[0018] figure 1 The anti-rotation structure of the deep-sea oil drilling casing joint shown is composed of a threaded male joint 1, a threaded female joint 2, a wedge 3 and a screw 4. The threaded male joint 1 and the threaded female joint 2 are a pair of matching tapered threaded joints, which are respectively connected to the two ends of the casing. This structure is convenient for one threaded male joint 1 to be screwed into the other threaded female joint 2 to form a joint structure. The wedge 3 is a member for anti-rotation, such as Figure 4 The shown wedge 3 is shaped like a rectangular block. Such as image 3 As shown, the side of the wedge 3 facing the threaded female joint 2 is provided with a dislocation shoulder, and the side of the upper shoulder facing outward is an inclined plane, and straight teeth are arranged on th...

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Abstract

The invention discloses a deepwater petroleum drilling casing pipe joint rotation preventing structure. The deepwater petroleum drilling casing pipe joint rotation preventing structure is composed of a threaded pin joint, a threaded socket joint, a wedge and a screw. The threaded pin joint and the threaded socket joint are a pair of matched taper thread joints and sleeve both ends of a casing pipe respectively; one surface of the wedge, which faces towards the threaded socket joint, is provided with shoulders, the inclined surface of the upper shoulder is provided with straight teeth, the lower shoulder is in a right-angle shape, and the outward vertical surface of the lower shoulder is provided with straight teeth perpendicular to the flat surface of the lower shoulder; the other surface of the wedge, which is opposite to the shoulders, is an inclined surface; the outer wall of the threaded pin joint is uniformly provided with grooves for embedding the wedge; one surface of the wedge where the teeth are formed is in contact with the screwed orifice end surface of the threaded socket joint; during positioning and locking through the screw, the straight teeth on the side surface of the wedge are embedded into the orifice end surface of the threaded socket joint, and the side surface of the wedge and the orifice end surface of the threaded socket joint are connected in an embedded mode to for a rotation preventing structure matched with the threaded pin joint and the threaded socket joint. The deepwater petroleum drilling casing pipe joint rotation preventing structure is high in locking force and impact resistance and reliable in rotation prevention.

Description

technical field [0001] The invention relates to a technology for improving the design of an oil drilling tool structure, in particular to an anti-rotation structure for a deep-sea oil drilling casing joint. Background technique [0002] Today, land oil is becoming increasingly depleted, and deep-sea oil drilling has become the main destination for countries looking for oil resources. The conditions of deep-sea oil drilling are different from land operations. There are two main differences between the two. One is that the depth of deep-sea oil drilling is deeper than that of land, and the length of the casing is increased accordingly. The second is that the casing in the ocean is impacted by waves, and its stability is poorer than that on land, which requires higher connection strength and anti-rotation ability of casing joints. The oil casing is about 10m long, and the joints are usually realized by threaded joints, that is, one end of the casing is provided with a threaded...

Claims

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Application Information

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IPC IPC(8): E21B17/08
CPCE21B17/08
Inventor 马吉山郭如海戴永国蒋存民张震宁
Owner JIANGSU SHUGUANG OIL DRILLING EQUIP CO LTD
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