a compression packer
A compression packer, No. 1 technology, applied in the direction of sealing/isolation, wellbore/well components, earthwork drilling and production, etc., to achieve the effects of convenient unsealing, enhanced sealing performance, and enhanced fracturing resistance
Active Publication Date: 2021-08-03
大庆华油石油科技开发有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The present invention provides a compression packer, which has the advantages of strong resistance to fracturing, easy unsealing and strong sealing performance, and solves the problems mentioned in the above-mentioned background technology
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
[0024] 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.
[0025] see Figure 1-6 , a compression packer, including a center pipe 1, the top of the center pipe 1 is movably socketed with an upper joint 2, and a first extrusion cylinder 3 is installed below the upper joint 2, and the first extrusion cylinder 3 is movably socketed On the top of the central tube 1, a protective body 4 is installed on the first extruding cylinder 3, and the central tube 1 is fixedly sleeved with a No. 1 rubber tube 5, a metal block 7, a N...
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 invention relates to the technical field of oil field downhole tools, and discloses a compression packer, which includes a center pipe, the top of which is movably sleeved with an upper joint, and a first extrusion cylinder is installed below the upper joint , the first extrusion cylinder is movably socketed on the top of the central tube, a protective body is installed on the first extrusion cylinder, and a No. 1 rubber cylinder and a metal block are respectively fixedly socketed on the central tube from top to bottom. , No. 2 rubber cartridge and No. 3 rubber cartridge. The present invention designs a rubber tube with an air channel, so that when the rubber tube is subjected to an axial extrusion force, the compression of the air channel can provide a radial extrusion force for the rubber tube, so that the speed of the seat seal is accelerated, and at the same time After the release is completed, the air channel still provides radial extrusion force to the rubber tube, which enhances the sealing performance of the rubber tube to the annular space, and the air channel and the rubber tube form a spring-like shape, so that the packer is released When sealing, the rubber cartridge itself can provide an axial resilience, which makes the unsealing of the packer more convenient.
Description
technical field [0001] The invention relates to the technical field of oilfield downhole tools, in particular to a compression packer. Background technique [0002] The packer is a kind of elastic sealing element, which is used to isolate the annular space between the pipe strings of various sizes and the wellbore and between the pipe strings, and isolate the production layer to control the production (injection) fluid and protect the casing. Generally, the downhole tools are divided into compression type, expansion type and so on. [0003] Among them, the compression packer mainly uses the rubber sleeve to expand and deform due to axial extrusion, and to generate contact pressure with the inner wall of the oil sleeve, thereby completing the sealing of the annular space of the oil sleeve. However, the rubber sleeve is subject to pressure in the high-pressure downhole environment. The pressure difference between the upper and lower sealing spaces is prone to excessive deform...
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): E21B33/129E21B33/128
CPCE21B33/128E21B33/129
Inventor 常江吴杰
Owner 大庆华油石油科技开发有限公司