Compressed high-temperature packer with gas propelling

A packer and compression technology, applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc., can solve problems such as unreasonable structure, easy to lose parts, low sealing success rate, etc., to improve Timely operation, reasonable design and high success rate

Inactive Publication Date: 2006-08-16
潘昌德
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many types of steam injection thermal recovery packers used in the field, mainly including mechanical type, thermal expansion type and heat-sensitive metal packer, which can play the role of sealing. However, due to the unreasonable structure The sealing success rate is low, or the seat seal is not tight, and the steam leakage during the steam injection process is a large waste of energy. In addition, it is difficult to pass through the collar during the process of lifting and lowering the packer, and it is easy to lose parts at the deformation of the casing, causing downhole accidents , which seriously affects the effect of existing packers, and their use is limited

Method used

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  • Compressed high-temperature packer with gas propelling

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Embodiment Construction

[0016] The present invention is provided by the following embodiments, and the present invention will be further described below in conjunction with the accompanying drawings.

[0017] In the figure, the upper joint 1 is connected with the upper thread of the central tube. The material of the upper joint 1 is 35CrMo. 7 / 8 "TBG buckle, with 15-20° arc on the outer edge, the central tube 2 is made of 35CrMo, and its upper and lower ends are respectively equipped with 2 7 / 8 "TBG buckle, the side wall is equipped with a rubber tube 3 from left to right, the outer layer of the rubber tube 3 is a protective seat 19, the rubber tube is set in the protective seat during assembly, and 32 sawn grooves are evenly distributed on the protective seat 19 , the groove width is 14.7 mm, the groove depth is 20 mm, and the center angle between each saw kerf groove is 11.25 degrees. Ring 4 and supporting claw 5, the outer circumference of the control ring 4 is in contact with the inner surf...

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Abstract

A compressive vapor impellent high-heated packer belongs to packer type of thick oil fill into underground well. This invention is advanced than the existing technologies, which is composed of upper adapter, central tube, tube of rubber, control ring, claw of support, cone, spring, liquid vat, back bonnet etc. When switch-in the underground well filler pipe, gas expand which is in the liquid vat of the outside of the central tube and the rubber tube expand into casing which is impelled by cone and claw of support, then rubber tube expand to the inside wall of the casing to achieve the sealed-off. The technology can avoid accessories drop into the well, save fund etc. The equipment can be used for improving series of packers in diameters of 102-150mm with casing of 5, 7 or 9 inch.

Description

Technical field: [0001] The invention belongs to a compressed gas-propelled high-temperature packer and belongs to the downhole packer for heavy oil steam injection. Background technique: [0002] Thermal recovery by steam injection in oil wells is the main recovery method in heavy oil fields. At present, there are many types of steam injection thermal recovery packers used in the field, mainly including mechanical type, thermal expansion type and heat-sensitive metal packer, which can play the role of sealing. However, due to the unreasonable structure The sealing success rate is low, or the seat seal is not strict, and the steam leakage during the steam injection process is large and wastes energy. In addition, it is difficult to pass through the collar during the process of tripping and unloading the packer, and it is easy to lose parts at the deformation of the casing, causing downhole accidents , which seriously affects the effect of the existing packer, and its use is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/127
Inventor 潘昌德潘琳高侃
Owner 潘昌德
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