Accumulator for downhole operation and method of use

An accumulator and energy storage technology, which is applied to earth-moving drilling, wellbore/well components, etc., can solve problems such as time-consuming and labor-intensive, and achieve the effects of convenient use, convenient underground operation and simple structure.

Active Publication Date: 2019-01-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the underground environment is special and requires special protection for transmission cables, which will also lead to laborious and laborious
[0004] Therefore, it is a technical problem that those skilled in the art need to solve how to solve the problem of laborious and labor-intensive when carrying out downhole operations through the above-mentioned power structure.

Method used

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  • Accumulator for downhole operation and method of use
  • Accumulator for downhole operation and method of use

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing.

[0022] Such as figure 1 As shown, the accumulator of the present invention is suitable for downhole operations, especially for oil and gas well operations. The accumulator comprises a substantially cylindrical body 1 to facilitate the machining of the accumulator and to lower the accumulator into the well. The main body 1 can be cast or turned. The holes on the body 1 can be formed during casting, or can be drilled by a drilling tool. The length, inner diameter, and outer diameter of the body 1 can be specifically set according to specific needs. It is also possible to lower one or more bodies 1 into the well body at the same time.

[0023] The main body 1 is provided with passages 11 running through both ends thereof. When the accumulator is put into the well, the well body part above the accumulator and the well body part below the accumulator communicate through the...

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Abstract

The invention provides an energy accumulator used for downhole operation. The energy accumulator comprises a body. The body is provided with an energy storage cavity used for storing driving fluid, an inlet and an outlet which are used for enabling the driving fluid to get in and out of the energy storage cavity, and a passageway used for enabling underground fluid to flow. According to the energy accumulator used for downhole operation, the driving fluid provides power for downhole tools and can be recycled; when the energy accumulator is placed in a well, well bodies located at the two ends of the energy accumulator can be kept unblocked, and hence downhole operation is conveniently conducted; and the energy accumulator is simple in structure, convenient to use and savable in time and effort.

Description

technical field [0001] The invention relates to the technical field of downhole tools, in particular to an accumulator for downhole operations. Background technique [0002] In the process of drilling, cementing or well completion, it is usually necessary to use some downhole tools to perform downhole operations. Currently, a downhole tool generally includes an actuator and a power mechanism for powering the actuator. Existing power mechanisms mainly include the following types. [0003] 1) Batteries. Install high-temperature lithium batteries inside the tool to provide power for downhole tools. Since the power stored in a single battery is limited, and a large amount of energy is required to drive the downhole tool to work, a large number of batteries need to be placed, which makes the arrangement time-consuming and labor-intensive. 2) Turbo. The mud generated during the drilling process is used to drive the turbine, so that the turbine drives the generator to generate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B41/00
CPCE21B41/00
Inventor 赵晨熙秦金立戴文潮倪卫宁邓继文孔博
Owner CHINA PETROLEUM & CHEM CORP
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