Double plug water injection packer
A technology of packer and plug, which is applied in sealing/isolation, wellbore/well components, earthwork drilling and production, etc. It can solve the problem of low measurement and adjustment efficiency and accuracy, inability to realize subdivided water injection, and large spacing between water injection layers and other problems, to achieve the effect of high measurement and adjustment efficiency and precision
Inactive Publication Date: 2011-12-21
PETROCHINA CO LTD +1
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Problems solved by technology
It solves the problems that the existing washable well distribution packers have large intervals between water injection intervals, low measurement and adjustment efficiency and precision, and cannot realize subdivided water injection.
Method used
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[0011] Below in conjunction with accompanying drawing, the present invention will be further described: the present invention is made up of upper joint 1, centering body 2, upper connection sleeve 3, main body 4, lower connection sleeve 5, guide body 6, center pipe 7, well flushing valve 8, water injection seat 9. Inner liner 10, liner 11, sealing rubber tube 12, spacer ring 13, pin hanger 14, setting pin 15, pin seat 16, unsealing pin 17, locking ring 18, positioning ring 19, locking sleeve 20, setting piston 21 and lower joint 22; among them, upper joint 1 and upper connecting sleeve 3, upper connecting sleeve 3 and main body 4, main body 4 and lower connecting sleeve 5, center pipe 7 and main body 4, lower joint 22 and The central pipe 7 is connected with threads, the centralizing body 2 and the main body 4, and the main body 4 and the guide body 6 are all connected by bolts, the water injection seat 9 is connected with the lower connecting sleeve 5 with threads, and the wel...
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The invention relates to the field of oil production engineering in oil fields, and belongs to a water injection packer with double plugs for water wells. It mainly solves the problem that the existing washable well-distribution packers have large intervals between water-injectable layers, low measurement and adjustment efficiency and accuracy, and cannot realize subdivided water injection with small card distances and small interlayers. The centralizing body 2 of the present invention and the main body 4, the main body 4 and the guide body 6 are all positioned and connected by bolts, the water injection seat 9 and the lower connecting sleeve 5 are connected by threads, the well flushing valve 8 is located in the lower connecting sleeve 5, and the liner 11 passes through the Threaded on the central pipe 7, the invention is suitable for injection wells of conventional layered production, and has a more significant effect on subdivided water injection wells with small card distances in thin and poor oil layers, and has the advantages of high measurement and adjustment efficiency and small test errors.
Description
Technical field: [0001] The invention relates to the technical field of oil production engineering in oil fields, and belongs to a water injection packer with double plugs for water wells. Background technique: [0002] The development of the oil field has entered a period of ultra-high water cut, the remaining oil is highly dispersed, and the conflicts between layers and layers are increasing. The development situation requires fine adjustment of the injection-production structure, subdivided water injection for water injection wells, and water distribution seals for existing washable wells. Due to the large water distribution interval due to the limitation of the process, the device cannot be used for subdivided layers with small card distances, and is not suitable for the existing high-efficiency measurement and adjustment technology. The test and deployment efficiency is low, the test error is large, and the layered test workload Large, and thus unable to achieve the pur...
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IPC IPC(8): E21B33/126
Inventor 王凤山周万富徐德奎马强岳庆峰李宏柏蒋雨辰赵欣于雷宋宇波
Owner PETROCHINA CO LTD