Feasibility study on the extension limit of hydraulically driven non-metallic completion screen string in ultra-short radius horizontal wells

BI Yansen, XIAN Baoan, SHI Xiaolei, GAO Deli

doi:10.11698/PED.20210828

0 20220805 - 20220805

DOI: https://doi.org/10.11698/PED.20210828

Feasibility study on the extension limit of hydraulically driven non-metallic completion screen string in ultra-short radius horizontal wells

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1. MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing 102249, China;
2. Institute of Resources & Environment, Henan Polytechnic University, Jiaozuo 454000, China

Received date: 2021-11-20

Revised date: 2022-05-20

Online published: 2022-05-26

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Abstract

Sticking of the screen pipe is a serious technical problem in the completion of ultra-short radius horizontal well. To solve this problem, the completion technology of hydraulically driven completion string is proposed and the completion string composed of guiding tube, hydraulically driven pipe, and nonmetallic composite screen pipe from inside out is designed, support tools for it are developed, and a mechanical model coupling tubular string-hydraulic pressure is established on the basis of the Pascal Principle and Hydraulic Drive Principle. Based on the wellbore structure of an ultra-short radius horizontal well targeting deep coalbed methane, the extension limit of completion string with hydraulic driven technology is calculated by the calculation model and compared with the extension limit of completion string with conventional technology. The results show that under the same conditions, the extension length of completion string of ultra-short radius horizontal wells by hydraulic driven technology is 17 times longer than that by conventional technology. Orthogonal analysis of multiple factors by numerical simulation shows that the structure of the completion string and the friction between the non-metallic continuous screen pipe and the wellbore are the two main factors affecting the extension length limit of the completion string driven by hydraulic pressure. Two kinds of completion string structures for ultra-short radius horizontal wells run hydraulic driven technology under different conditions have been selected, with the maximum extension lengths of 381 m and 655 m, respectively. The research results can provide theoretical support for completion of ultra-short radius horizontal wells with non-metallic continuous composite screen pipe driven by hydraulic pressure.

Key words： ultra-short radius horizontal well; screen completion; hydraulic driven technology; non-metallic composite continuous screen pipe; length of the run-in screen

Cite this article

BI Yansen, XIAN Baoan, SHI Xiaolei, GAO Deli . Feasibility study on the extension limit of hydraulically driven non-metallic completion screen string in ultra-short radius horizontal wells[J]. Petroleum Exploration and Development, 0 : 20220805 -20220805 . DOI: 10.11698/PED.20210828

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