Device and method for packer pressure bearing test
A technology for packer and pressure testing, which is applied in the direction of measuring devices, applying stable tension/pressure to test material strength, instruments, etc., can solve the damage of shear nails and rubber tubes, it is difficult to test the sealing effect of packers, and increase The risk of open hole packer entering the well and other issues are achieved, and the effect of convenient operation and simple structure of the device is achieved
Active Publication Date: 2018-11-02
CHINA PETROLEUM & CHEM CORP +1
View PDF18 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Limited by the shear nails of the open hole packer, the test pressure must be controlled within a low pressure range, which makes it difficult to test the sealing effect of the packer under high pressure
In addition, direct testing of the whole machine will more or less cause some damage to the shear nails and rubber tubes, which undoubtedly increases the risk of entering the well for the open hole packer
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
[0029] The present invention will be further described below in conjunction with accompanying drawing.
[0030] figure 1 A device 100 for pressure testing of packers according to the invention is shown. Such as figure 1 As shown, the device 100 includes a casing 1 , a pressing head 2 , a supporting head 3 and a supporting sleeve 4 . Wherein, the casing 1 is cylindrical, and an observation hole 11 communicating with the inside and the outside is provided on its side wall, so as to observe whether the packer 50 leaks. The pressing head 2 is arranged at the opening of the first end of the casing 1 and is used to block the opening of the first end of the casing 1 . A communication hole 21 is provided on the pressing head 2 for communicating the inner cavity of the jacket 1 with the outside. The supporting head 3 is arranged at the second end of the casing 1 and is used to block the opening of the second end of the casing 1 . The supporting sleeve 4 is arranged in the inner ca...
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 provides a device and method for packer pressure bearing test. The device comprises a tubular outer sleeve, a pressurization sealing head, a support sealing head and a support sleeve, wherein the side wall of the outer sleeve is provided with an observation hole used for communicating the inside and the outside; the pressurization sealing head is arranged at a first end opening of the outer sleeve; the pressurization sealing head is provided with a through hole used for being communicated with an inner cavity of the outer sleeve; a support sealing head is arranged at the second end of the outer sleeve and is used for sealing and blocking a second end opening of the outer sleeve; the support sleeve is arranged in the outer sleeve; the first end of the support sleeve is used for realizing the abutting joint with the hydraulic cylinder of the packer; the second end is used for realizing the abutting joint with the support sealing head. The device has a simple structure, andcan be used for the pressure bearing test of an open hole packer; the open hole packer cannot be damaged in the test process.
Description
technical field [0001] The invention relates to the technical field of downhole tools for oil and gas wells, in particular to a device and method for pressure testing of packers. Background technique [0002] With the development of low-permeability oil and gas reservoirs, multi-stage sliding sleeve open hole staged fracturing technology has been more and more widely used. The open hole packer is the key tool, which can isolate the target layer to ensure the effect of multi-stage fracturing. In order to ensure that the open hole packer meets the overall pressure-bearing sealing performance and prevent leakage under high-pressure working conditions after entering the well, which will affect the construction, a pressure-bearing sealing test is required before leaving the factory. Limited by the shear nails of the open hole packer, the test pressure must be controlled within a low pressure range, which makes it difficult to test the sealing effect of the packer under high pres...
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 Applications(China)
IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/0048
Inventor 薛占峰马兰荣张奎林朱和明侯乃贺韩峰
Owner CHINA PETROLEUM & CHEM CORP