A rapid unsealing hydraulic control packer and its construction method
A packer and unpacking technology, applied in the directions of sealing/packing, earth-moving drilling, wellbore/well components, etc., can solve the problems of increasing operating costs, many sealing joints, and inability to achieve pressure relief. Improve performance and good temperature adaptability
Active Publication Date: 2021-11-30
CHINA PETROLEUM & CHEM CORP +1
View PDF15 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
One is that after the check valve is closed, high pressure will be formed in the annular cavity. Even if the liquid is injected from the annular space, it is difficult to open the pressure relief channel through the piston due to the small compression coefficient of the liquid. This method alone cannot achieve The purpose of pressure relief; the second is that there are many sealed connections in this structure, and a set of devices needs to be added, which increases the operating cost additionally
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0027] see Figure 1 to Figure 5 , The present invention provides a technical solution: a rapid unsealing hydraulic control packer, including a setting mechanism, a pressure relief mechanism, and an unsealing booster mechanism. Both the setting mechanism and the pressure relief mechanism are set on the central pipe 4, and also include an unsealing booster mechanism. The upper end of the setting mechanism is connected to the pressure relief mechanism through a ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention has disclosed a rapidly unblocking liquid controlled seal and construction method. The septor includes central pipes, sealing mechanisms, and pressure leakage mechanisms.Including unblocking assistance agencies, the upper end of the sealing mechanism is connected to the pressure leakage mechanism through a connection cover, which is an unsealed unblocking assistance mechanism composed of the connection cover and the central tube.The unblocking assistance agency is a polymer -type memory material unsealed and rigid spring.This device is set to help the unblocking mechanism to help seal the piston back, and at the same time add the pressure leakage device to achieve the rapid release of underground pressure and achieve the purpose of rapidly unblocking.
Description
technical field [0001] The invention relates to an underground layering tool for oil exploitation, in particular to a rapid unsealing hydraulic control packer and a construction method. Background technique [0002] At present, the water injection technology integrated with hydraulic control, measurement and adjustment is the leading method of water injection development in Shengli Offshore Oilfield. It has multiple advantages of ground pressure control, monitoring, and dynamic supplementary pressure. With the further growth of the application scale, there are different degrees of incomplete unsealing of hydraulic control packers, especially for formations with severe formation deficits. The main reason is that it is difficult to release the liquid column pressure of It is difficult for the sealing piston to return to the initial position. According to statistics, during on-site construction, the unsealing time of the hydraulic control packer is basically more than 24 hours...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/128
CPCE21B33/1285
Inventor 张雷谷开昭任从坤贺启强王登庆蔡增田郭林园聂文龙魏新晨刘艳霞
Owner CHINA PETROLEUM & CHEM CORP