Continuous tube horizontal borehole process and device

A process technology and logging technology technology, which is applied in the field of oil field horizontal well production performance and wellbore engineering condition monitoring, can solve the problems of complex structure of "crawlers", the instrument cannot work normally, and the use effect is poor, and achieves high construction efficiency. , The effect of horizontal well data is true and easy to operate

Inactive Publication Date: 2009-03-11
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex structure of the "crawler" and limited power in this method, mechanical failure or changes in the wellbore structure will cause the instrument to fail to work normally under complex downhole conditions.
Therefore, this method is too limited and the use effect is poor

Method used

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  • Continuous tube horizontal borehole process and device
  • Continuous tube horizontal borehole process and device
  • Continuous tube horizontal borehole process and device

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Experimental program
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Embodiment Construction

[0017] The implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] Such as figure 1 As shown, the coiled tubing horizontal well logging process provided by the present invention is to run the coiled tubing 2 through the gooseneck 3 and the wellhead device 4 into the horizontal well casing 5 through the continuous operation machine 1, and the coiled tubing 2 is connected to a downhole logging device. Well instruments and tools6. Coiled tubing depth system 7, coiled tubing signal transmission system 8, and logging numerical control surface system 9 are not shown in the figure.

[0019] Such as figure 2 As shown, the wellhead device 4 is composed of an injection head 4-1, a blowout preventer box 4-2, a blowout preventer 4-3, a blowout preventer 4-4, and a wellhead flange 4-5.

[0020] image 3 Shown is a schematic diagram of coiled tubing 2 transporting downhole logging instruments and tools 6 .

[0021...

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Abstract

The invention relates to a horizontal well logging technology with a continuous tube and a device thereof. The technology uses a high-strength and high-tenacity continuous tube as tools to convey down-hole logging instruments so as to ensure that the down-hole instruments perform tests under various horizontal wells. The adopted device comprises a continuous tubing unit, the continuous tube, a wellhead device, connecting joints between the continuous tubes and the down-hole instruments, down-hole logging instruments and tools for the horizontal wellbore, a ground numerical control logging system, a depth system of the continuous tube and a signal transmission system of the continuous tube. The invention can ensure the down-hole instruments to perform tests under various horizontal holes by using the continuous tube as the conveyance tool of the down-hole instruments; the technology uses few application equipment and has the advantages of good maneuverability, convenient operation and high construction efficiency thanks to the application of continuous tubing unit and other special devices.

Description

Technical field: [0001] The invention relates to a technology and a device for monitoring the production dynamics of horizontal wells in an oil field and the state of well body engineering. Background technique: [0002] Well logging is a method of downhole oil and gas exploration, which is used to discover oil and gas reservoirs, evaluate oil and gas reserves and production, monitor the dynamic production of oil and gas wells and the engineering status of wells. Conventional well logging technology uses cables to transport downhole instruments. During the downhole process, the downhole instruments and cables mainly rely on the weight of the downhole instruments and cables to fall under the action of gravity. This technology is mainly used in logging operations in straight wells or deviated wells with a certain inclination. When the degree of well deviation exceeds a certain range, due to the influence of the friction between the instrument and the cable and the well wall, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B49/00
Inventor 江松元王春宁吴依东陈小安徐世俊闫成军
Owner BC P INC CHINA NAT PETROLEUM CORP
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