Water-injection gas-injection one-way device
A one-way device and gas injection technology, applied in the wellbore/well valve device, production fluid, wellbore/well components, etc., can solve the problems of water injection and gas injection channel failure, complex structure, easy corrosion and scaling, etc. , to achieve the effect of uniform force, small contact area, and not easy to get stuck.
Active Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology
Moreover, the structure of the existing water injection and gas injection device is complex, and it is easy to corrode and scale, and block the water injection and gas injection holes, resulting in the failure of the water injection and gas injection channels.
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[0035] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are given in the description and drawings, but the present invention can be implemented in many different forms and is not limited to the embodiments described in the description. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0036] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments, and are not used to limit the present invention. The ter...
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A water-injection gas-injection one-way device comprises a tubular upper connector, a tubular lower connector and a valve body assembly, and the valve body assembly comprises a tubular valve body container and a plurality of one-way valves. Counter bores which are the same as the one-way valves in number and used for containing the one-way valves are formed in the upper pipe wall of the valve bodycontainer in the circumferential direction of the upper pipe wall of the valve body container, and the axes of the counter bores are parallel to the axis of the valve body container. First air inletholes communicating with a water and gas injection pipeline is formed in the bottoms of the counter bores. Each one-way valve is sequentially provided with a sealing ball seat, a sealing ball, a piston, a spring and a spring seat from bottom to top. Second air inlet holes communicating with the first air inlet holes are formed in the center of the sealing ball seats. The spring seats are fixed atthe upper parts of the counter bores. The springs are compression springs. An annular groove communicating with the counter bores is formed in the middle of the counter bores in the axial direction ofthe valve body container in the direction towards the axis center of the valve body container, and the width of the annular groove in the axial direction of the valve body container is smaller than the radius of the sealing balls.
Description
technical field [0001] The invention relates to a water injection and gas injection one-way device, in particular to a water and gas injection one-way valve for oil and gas wells to establish multiple circulations, and belongs to the field of oil field technology. Background technique [0002] At present, the technology of gas injection and water injection in Tahe fracture-cavity reservoirs has entered the stage of popularization and application. After gas injection in thin oil wells, the properties of crude oil may become thicker. Go back up again to fill the wellbore. At this time, it is necessary to carry out the dilution operation to facilitate the smooth progress. Conventional downhole tools such as well killing sleeves cannot realize the multiple switching of downhole water injection and gas injection equipment to connect the tubing multiple times, which cannot meet the requirements of multiple dilute operation of the tubing string. Therefore need to develop a kind of...
Claims
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Login to View More IPC IPC(8): E21B34/08E21B43/20E21B43/16
Inventor 王世洁胡文革李亮杨利萍丁保东任向海任波何龙焦保雷冯一波曾文广秦飞李婷婷李海霞魏芳
Owner CHINA PETROLEUM & CHEM CORP