Storage type precision quantitative oil and gas well downhole working agent injection system and injection method

A technology of injection system and working agent, which is applied in wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of large amount of glue used, affecting the working efficiency of working fluid, and the decline of adhesive performance, etc., to achieve Excellent injection accuracy and position accuracy, simple and efficient operation method, easy installation and operation
CN104948134BActive Publication Date: 2018-04-06ANTON BAILIN OILFIELD TECH (BEIJING) CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
ANTON BAILIN OILFIELD TECH (BEIJING) CO LTD
Publication Date
2018-04-06

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Abstract

A storage-type precise quantitative injection system for injection of an underground oil or gas well operating agent and an injection method thereof. The injection system comprises an injection tube (3-2) and overground pressurizing equipment. The injection tube is provided with one or more sets of injection units therein. Each set of the injection units comprises an operating agent container (3-7) having a variable volume. The overground pressurizing equipment is configured to generate a pressure acting on the operating agent container (3-7) having the variable volume so as to expel an operating agent (3-8). The injection method adopts the storage-type precise quantitative injection system using the underground oil or gas well operating agent (3-8), and injects a fixed amount of the operating agent (3-8) into a target location in the underground well. By injecting in advance the fixed amount of the operating agent into the operating agent container, the injection system can inject an accurate and fixed amount of the operating agent and ensure accuracy of an injection amount of the operating agent. The injection method can inject an accurate amount of the operating agent into the target location, providing accuracy of the injection amount and accuracy of the injection location and ensuring a favorable injection effect.
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Description

technical field

[0001] The invention relates to a storage type precision quantitative oil and gas well downhole working agent injection system and an injection method using the system, belonging to the field of oil and natural gas exploitation. Oil and gas wells here refer to oil and gas wells in a broad sense in the development of oil and gas fields, including oil wells, gas wells, natural gas wells, injection wells, water injection wells, steam injection thermal recovery wells, steam huff and puff wells, steam injection wells, deep wells and ultra-deep wells, horizontal wells, Highly deviated wells, directional wells, vertical wells, etc. Background technique

[0002] In the development of oil and gas fields, working agents need to be injected downhole to improve downhole production. The working agents injected downhole include the following categories:

[0003] (1) Clogging agents, including glue, cement, and seepage reducers;

[0004] (2) Formation sand consolidation ...

Claims

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