E3S Web Conf.
Volume 293, 20212021 3rd Global Conference on Ecological Environment and Civil Engineering (GCEECE 2021)
|Number of page(s)||8|
|Section||Environmental Energy and Civil Engineering and Water Conservancy Construction|
|Published online||23 July 2021|
Analysis method of cluster perforating tubing strings trafficability in horizontal wells for unconventional reservoirs
1 School of mechanical and electrical engineering, Southwest Petroleum University, Chengdu Sichuan 610500, China
2 School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China
The feasibility of a normal perforating operation depends on the perforating tubing string, which is the main component of the cluster perforating tool for the exploration and development of unconventional oil&gas reservoirs. To improve the efficiency of cluster perforation in horizontal wells, a passing capability analysis model for the tubing string in a wellbore was established, thereby generating complex equations with coefficients that are solved via geometric analyses and the beam-column theory. This model was based on a comprehensive consideration of the friction between the downhole tools and the borehole wall, fluid resistance, wellbore geometric constraint, pump thrust, axial tension, tool variable cross-section, tension of cable head, and tool elastic deformation. Based on field test data, the pass-through capacity of “1 bridge plug + 4 cluster perforating gun string” in the X206 well and the main factors affecting pass-through ability were analyzed to test the validity of the model. The model presented in this paper can provide an effective tool for analyzing the design and operation of a cluster perforating string.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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