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An ultra-short removable hydraulic packer

A packer, a desirable technology, applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of processing, assembly, testing, inconvenient use and transportation, difficult operation, complicated operation, etc. , to save production and later maintenance costs, facilitate transportation and use, and simplify the overall structure

Active Publication Date: 2021-12-17
荆州市赛瑞能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex structure of the same type of removable hydraulic packers currently on the market, and the total length of the packer is too long (about two meters), it is very inconvenient to process, assemble, test, use and transport, and the process of unsealing The operation is complicated, and related unsealing tools are required to achieve unsealing. The operation is difficult and can only bear one-way load

Method used

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  • An ultra-short removable hydraulic packer
  • An ultra-short removable hydraulic packer
  • An ultra-short removable hydraulic packer

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] The ultra-short removable hydraulic packer includes a center pipe 1 , an upper joint 2 and a lower joint 3 , one end of the central pipe 1 is threaded with the upper joint 2 , and the other end of the central pipe 1 is threaded with the lower joint 3 . The middle part of the central tube 1 between the upper joint 2 and the lower joint 3 is installed with a rubber cylinder 5 and a lower vertebral body 6 through a guide ring 4; the guide ring 4 is connected to the rubber cylinder 5; Threaded connection, an upper limit ring 7 is arranged between the lower vertebral body 6 and the central tube 1 to limit the lower vertebral body 6 to move leftward along the central tube 1 .

[0030] The central pipe 1 on the side of the upper joint 2 is equipped with an upward moving ring 9 and a downward moving ring 10 through the connecting ring 8. The central pipe 1 is a variable diameter body. The connecting ring 8 can be axially limited by cooperating with the end surface of the upper ...

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Abstract

The invention relates to an ultra-short removable hydraulic packer, which belongs to the field of downhole operation tools for oil and gas wells. The packer includes a central pipe, an upper joint and a lower joint. The middle part of the central pipe between the upper joint and the lower joint is equipped with a rubber tube and a lower vertebral body through a guide ring; There is an upper moving ring and a lower moving ring, an upper piston is arranged on the central pipe between the rubber tube and the lower joint through a cylinder sleeve, and a pressing hole is arranged on the central pipe between the upper piston and the lower joint. The center pipe of the packer is an integrated center pipe, which enhances the reliability and integrity of the packer during production. It solves the problem that the existing packer is inconvenient to process, assemble, test, use and transport due to its complex structure, and can only bear one-way load. The packer greatly simplifies the overall structure of the packer, reduces the cost of the packer, and is especially suitable for drilling, cementing and stimulation operations of oil and gas wells.

Description

technical field [0001] The invention relates to an ultra-short removable hydraulic packer, which belongs to the field of downhole operation tools for oil and gas wells. Background technique [0002] The packer is a special tool used to isolate oil, gas and water layers in downhole casing or open hole. Through the action of external force, the length of the rubber tube is shortened and the diameter is increased to seal the annular space of the oil and sleeve, and separate the oil (gas, water) layers above and below the packer, so as to realize the layered testing of oil and water wells, layered oil recovery, and separation. Layer water injection, layer transformation and sealing water layer. It is widely used in drilling, cementing, testing, and well completion, and can be used for production, water injection (gas), interlayer isolation, separate injection and production, multi-layer testing, stimulation operations, etc., and the packer can be used separately. Type and perm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/128E21B33/1295
CPCE21B33/1285E21B33/1295
Inventor 张健张强兵王琼杨阳杨改马杰马小平陶风朱向斌王璞程市君
Owner 荆州市赛瑞能源技术有限公司
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