A cementing and fracturing process and a cementing and fracturing operation string
It is a technology of process pipe string and well cementing, which is applied in the direction of wellbore/well components, drill pipe, casing, etc. It can solve the problems of high risk, high labor cost, long time and so on, so as to save tool cost, labor cost, The effect of reducing the number of downloads
Active Publication Date: 2022-04-12
荆州市赛瑞能源技术有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to: provide a pipe string that only needs to be run in one trip, and the cementing, drilling plug and segmental fracturing operations can be performed respectively; The cementing and fracturing process and the cementing and fracturing operation string caused by the long time, high labor cost and high risk caused by the completion of the string
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Embodiment Construction
[0054] The cementing and fracturing process includes the following steps;
[0055] Firstly, the outer tubing string is lowered into the predetermined position of the oil well through the tubing (drill pipe) and then fixed through the wellhead. The outer tubing string is connected in sequence by the top packer 1, the hanger 2, the tubing short 3, the cementing valve 4, and the circulation valve. 5. Salvage basket 6. First-stage containment and fracturing tool 7. Second-stage containment and fracturing tool 8. Third-stage containment and fracturing tool 9. Fourth-stage containment and fracturing tool 10. Hydraulic sliding sleeve 11. Pressure short Connector 12, floating hoop 13 and floating shoes 14; among them, the first-level isolation and fracturing tool 7, the second-level isolation and fracturing tool 8, the third-level isolation and fracturing tool 9 and the fourth-level isolation and fracturing tool 10 respectively It is composed of an open hole packer and a fracturing sl...
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The invention relates to a cementing and fracturing process and a cementing and fracturing operation string, belonging to the technical field of downhole operation tools for oil and gas wells. The invention only needs to run the pipe string in one trip to carry out the cementing, drilling plug and segmented fracturing operations respectively; it solves the time caused by the existing cementing and fracturing operations requiring two trips of the pipe string to complete The cementing and fracturing process and the cementing and fracturing operation strings with long length, high labor cost and high risk. Compared with the prior art, the present invention reduces the well completion operation procedures, saves manpower cost, saves operation time, and shortens the development cycle; reduces the number of tools for well completion operations, completes the designated target with fewer tools, and saves tool costs; The number of running strings reduces operational risks.
Description
technical field [0001] The invention relates to a cementing and fracturing process and a cementing and fracturing operation string, belonging to the technical field of downhole operation tools for oil and gas wells. Background technique [0002] The development of oil and gas wells in my country mainly goes through exploration-drilling-logging-logging-cementing-completion-perforation-oil production (fracturing)-transportation and other processes. However, each process will consume a long time in the process of oil and gas well exploitation, and each process requires a large number of operating tools, and there is a risk of downhole safety accidents during the operation process, thereby increasing the cost of crude oil production and increasing oilfield management. difficulty. The integration of cementing and fracturing work is one of the measures to reduce the operating procedures before crude oil exploitation. The cementing and fracturing are completed with a set of pipe s...
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IPC IPC(8): E21B43/26E21B33/122E21B19/10E21B23/01E21B23/06
CPCE21B43/26E21B33/122E21B19/10E21B23/01E21B23/06
Inventor 陶风王璞张健王琼王慧朱向斌谢建梅阎新颖刘书欣
Owner 荆州市赛瑞能源技术有限公司