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Special extraction tool for hydraulic injector and extraction method for underwater hydraulic injector

A technology of injector and hydraulic pressure, which is applied in the direction of earthwork drilling, wellbore/well components, etc., which can solve the problem that the hydraulic injector is difficult to take out, and achieve the effect of high success rate and strong operability

Inactive Publication Date: 2015-10-28
CHINA NAT OFFSHORE OIL CORP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to avoid the deficiencies in the prior art and provide a special extraction tool and extraction method for hydraulic injectors, so as to solve the problem that the hydraulic injectors of underwater robots are difficult to extract when they are stuck in underwater operations in offshore oil and gas field marine engineering operations

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  • Special extraction tool for hydraulic injector and extraction method for underwater hydraulic injector
  • Special extraction tool for hydraulic injector and extraction method for underwater hydraulic injector

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0021] like figure 1 and figure 2 As shown, the core of the present invention is to provide a special extraction tool for hydraulic injectors, which includes a clamping extraction part 1 and a handle part 2. The clamping extraction part 1 is composed of two mutually parallel clamping rods 11, and the clamping Rod 11 is iron rod, is connected by welding. The distance between the two clamping rods 11 can be adjusted according to the diameter of the hydraulic injector. The job site can be processed and designed according to the situation, and the raw materials are easy to use and easy to operate. The middle parts of the two clamping rods 11 are both ben...

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Abstract

The invention discloses a special take-out tool and a take-out method for a hydraulic injector. The special take-out tool for the hydraulic injector comprises a clamping take-out part and a handle part; the clamping take-out part consists of two parallel clamping bars; the middle parts of both the clamping bars are bent into a preset angle; the handle part consists of a vertical rod and a cross bar; the cross bar is fixed at one end of the vertical rod; and the other end of the vertical rod is fixedly connected to one end of the clamping take-out part. The invention ingeniously applies the lever principle, so that the force for pulling out the injector is greatly increased. When the special take-out tool for the hydraulic injector is in use, the handle part of the special take-out tool is grasped by an underwater robot; then a take-out part of the hydraulic injector is clamped by the tool; and by using the right angle point of the tool as the fulcrum, the handle part is repeatedly pressed by a manipulator of the underwater robot, so that the hydraulic injector can be rapidly taken out of an underwater facility injection hole and the success rate is ultrahigh.

Description

technical field [0001] The invention belongs to the technical field of marine engineering operations in offshore oil and gas fields, and specifically refers to a special extraction tool and extraction method for hydraulic injectors of underwater robots in underwater production facilities of offshore oil and gas fields. Background technique [0002] In the current offshore oil and gas field offshore engineering operations, it is often necessary to use underwater robots to operate various tools to complete underwater construction. The subsea tree hydraulic injector is a special tool for pressurizing and locking the subsea tree and injecting working fluid. It is an essential tool for underwater pressure testing and suppression operations. The operation of the hydraulic injector includes insertion and removal, and is operated by the ROV manipulator under normal working conditions. In offshore engineering operations, there have been many cases of hydraulic injector tools being s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/00
Inventor 孟文波靳书凯张勇王尔钧段泽辉方达科方满宗吴志明
Owner CHINA NAT OFFSHORE OIL CORP
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