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Downhole intelligent control expansion packer

A packer and intelligent control technology, which is applied in sealing/isolation, wellbore/well components, wellbore/well valve devices, etc., can solve the problems of unable to collect and upload the working effect of the packer and state parameters, etc. Achieve the effects of curbing sand production, saving testing costs, and reducing downhole accidents

Active Publication Date: 2020-06-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two patents have a common feature: the working effect and status parameters of the packer itself cannot be collected and uploaded in time

Method used

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  • Downhole intelligent control expansion packer
  • Downhole intelligent control expansion packer
  • Downhole intelligent control expansion packer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see Figure 1-4, in an embodiment of the present invention, a downhole intelligent control expansion packer includes an upper joint 1 and a lower joint 46, the upper joint 1 is fixedly connected with an intelligent control board 15, the intelligent control board 15 is connected to the first connecting line 472, the second The second connection line 542, the third connection line 552, the electric switch connection line 121, the upper steel pipe cable 2 and the lower steel pipe cable 53 are connected without defects, the upper joint 1 and the piston head 7 are threaded and sealed, and the piston head 7 is connected to the sealing body 33 Threaded sealing connection, the piston head 7 is provided with a third seal ring 9 and a fourth seal ring 10, the piston head 7 is sealed with the bin shell 11, the bin shell 11 is threaded with the detent pin 8, and the detent pin 8 is connected with the piston head 7 pin connection, the upper steel pipe cable 2 is worn in the eccentri...

Embodiment 2

[0024] see Figure 5 , the lower end of the power sleeve 18 is inserted into the upper end of the rotating shaft 48, the rotating shaft 48 is provided with a liquid inlet and outlet hole 481, one side of the rotating shaft 48 is provided with a mouth valve seat 49, and the mouth valve seat 49 is provided with a valve ball 50, the valve ball 50 The lower spring 51 is connected to the support 52 , and the support 52 is provided with a middle hole 521 .

[0025] Operation process: use oil pipes to connect with other tools and run into the well in sequence. The cables of each tool are connected without defects, and they are connected to the wellhead to connect with the ground control system to keep the power supply and communication normal; 49 The built-in valve ball 50 is always closed under the action of the lower spring 51. If the pressure difference formed between the oil jacket and the pipe is greater than the elastic force of the lower spring 51, the packer will be seated, a...

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Abstract

The invention discloses a downhole intelligent controlling type expansion packer. The downhole intelligent controlling type expansion packer comprises an upper joint and a lower joint; an intelligent controlling plate (15) is fixedly connected to the upper joint; an inner cavity pressure gauge (47), a sealing pressure gauge (54) and an in-pipe pressure gauge (55) which are connected with the intelligent controlling plate (15) are arranged on one side of a sealing main body (33); an electric switch is arranged in the sealing main body (33) and controls liquid inlet and liquid outlet of an inner cavity of a rubber barrel, steel pipe cables penetrate through a packer body, and locking and sealing mechanisms are arranged on the two extended ends of the steel pipe cables. According to the downhole intelligent controlling type expansion packer, the self power supply and data transmission problems are solved by utilizing the penetrating cables, a ground controlling system can control the packer to be set and unset and collect and upload data of the inner cavity, stratum and in-pipe pressure in time, the examining seal procedure of the packer is simplified, the accuracy of other downhole parameter admission is improved, fluid migration preventing pressure difference between layers during stopping injection is raised to over 15MPa, interlayer interference in an oil producing well is solved, and occurrence of downhole accidents is reduced.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation machinery, in particular to an intelligently controlled downhole expansion packer. Background technique [0002] At present, the processes of layered water injection and layered oil recovery in oilfields are developing towards intelligence, and more accurate real-time monitoring of parameters such as oil production, formation pressure, layered flow rate and temperature can be carried out, and quantitative fine analysis can be made , Improve the level of oilfield exploitation. This process needs to install cables on pipe strings and downhole tools, or upload these data to the ground in a cableless way; The working status of the spacer itself cannot be detected and uploaded, and it needs to be verified by other methods. It cannot grasp the stratum isolation situation in time, which affects the authenticity of other uploaded parameters, which increases the production cost and does not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/126E21B34/06
CPCE21B33/126E21B34/066E21B2200/04
Inventor 石建设
Owner CHINA PETROLEUM & CHEM CORP
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