Pressure control communication oil jacket annulus control valve
An oil casing annulus and pressure control technology, applied in the direction of wellbore/well valve devices, cleaning tools, wellbore/well components, etc., can solve the problems of equipment applications that cannot be opened or closed normally, cannot be opened or closed, etc. , to achieve the effects of preventing deposition, quick assembly, and simple and convenient operation
Pending Publication Date: 2021-08-31
中汇伽源(天津)科技有限公司
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Problems solved by technology
Although the existing technical solutions can solve the problem, when the concentration of solid particles contained in the downhole reaches a certain level, or when there is a large amount of gas in the downhole, it will limit the application of the equipment and cannot be opened or closed normally.
At the same time, with the application of inclined wells and horizontal wells, there is a risk that they cannot be opened or closed
Method used
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Embodiment Construction
[0034] Below in conjunction with the accompanying drawings for further description:
[0035] The embodiment of the present invention provides a pressure control communicating oil sleeve annulus control valve, such as figure 1 and figure 2 As shown, it includes upper joint 1, righting spring 2, sealing ball seat 3, sealing ball 4, positioning pin 5, sealing member 6, sealing shell 7, lower joint 8, sealing piston 9, spring top seat 10, oil discharge hole 11. Piston spring 12, necking step 13, end step 14 and piston housing 15;
[0036] The sealing piston 9 is composed of a piston housing 15, a necking step 13, an end step 14, a positioning pin 5, a centralizing spring 2, a spring top seat 10, a sealing ball 4, and a sealing ball seat 3; the sealing piston 9 is arranged in the sealing housing 7, the sealing member 6 is used to seal between the sealing piston 9 and the sealing housing 7, and the sealing piston 9 moves through the action of the piston spring 12;
[0037] The p...
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The invention discloses a pressure control communication oil jacket annulus control valve. The pressure control communication oil jacket annulus control valve is characterized in that a positioning pin, a centralizing spring, a spring footstock, a sealing ball and a sealing ball seat form a centralizing springback device, the centralizing springback device is arranged in a sealing piston, one end of the centralizing spring is fixed on the positioning pin, and the other end of the centralizing spring is fixed on the spring footstock; the sealing ball is arranged between the spring footstock and the sealing ball seat, and the sealing ball is in tight sealing contact with the spring footstock and the sealing ball seat by means of elastic force of the centralizing spring. According to the pressure control communication oil jacket annulus control valve, rebound return of the sealing ball seat can be ensured in time, and opening and closing of a valve in a highly-deviated well are ensured; when a pump cannot normally establish pressure difference and work normally, the oil jacket annulus is closed in time, and normal pumping of fluid is guaranteed; in addition, solid particles are prevented from being deposited on the sealing ball seat, the sealing ball and a pump outlet, an oil pipe can be directly cleaned in a ground pressurization oil pipe reinjection mode, operation is convenient, machining mode is simple, and assembling is fast.
Description
[0001] 1. Technical field [0002] The present application relates to the field of oil exploitation, in particular to a pressure control communicating oil jacket annular control valve. [0003] 2. Background technology [0004] In oilfield production, when the wellbore pressure in the oil well is low, it is necessary to manually lower the oil well pump to suck the downhole fluid to the surface to achieve normal production. Liquids are produced inside the well, and gas and solids are produced at the same time. When the downhole equipment is shut down due to failure, the fluid and solids in the tubing stop moving upwards, the fluid is still, and the solid particles will gradually settle down due to the high density, and the settled solids will accumulate at the outlet of the pump. Difficulty starting occurs. [0005] In addition to the above circumstances, wax precipitation will also occur in oil field production. As the temperature inside the wellbore decreases, the closer to...
Claims
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IPC IPC(8): E21B34/08E21B37/00
CPCE21B34/08E21B37/00
Inventor 宣嵩金江文
Owner 中汇伽源(天津)科技有限公司
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