Abstract
The new unlimited multistage ball-activated fracturing system is researched which is composed of packers and ball seat ports. All ball-operated ports in one single trip can be opened by pumping single size balls. So, the inner diameter (ID) of the fracturing system is large and can support aggressive treatments with high-rate and high-sand-concentration slurries that optimize well simulations and maximize production. In this fracturing system, every ball-activated port is connected with every packer. The diameter of ball seats can be changed by hydraulic pressure. While the initial stage is treated, the tubing–casing annulus pressure is higher than the secondary stage. The high pressure is conducted to the secondary ball-activated port by the bridge channel and makes the diameter size of ball seat reduce. In the same way while one zone is treated, the diameter of ball seat for the next zone is changed. Using single size ball, it can open all ball-activated ports in one single trip. This new fracturing system can be applied for cased wells, both horizontal and vertical wells, using bridge channels to conduct pressure. Especially for refracturing wells, this new system can treat more stages and increase production.
Copyright 2017, Shaanxi Petroleum Society.
This paper was prepared for presentation at the 2017 International Field Exploration and Development Conference in Chengdu, China, 21–22 September 2017.
This paper was selected for presentation by the IFEDC&IPPTC Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the IFEDC&IPPTC Committee and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC&IPPTC Committee, its members. Papers presented at the Conference are subject to publication review by Professional Committee of Petroleum Engineering of Shaanxi Petroleum Society. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of Shaanxi Petroleum Society is prohibited. Permission to reproduce in print is restricted to an abstract of not more than 300 words; illustrations may not be copied. The abstract must contain conspicuous acknowledgment of IFEDC&IPPTC. Contact email: paper@ifedc.org or paper@ipptc.org.
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Zhang, S. et al. (2019). Single Size Ball-Activated Fracturing System with Bridge Channel for Cased Well. In: Qu, Z., Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2017. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-10-7560-5_107
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DOI: https://doi.org/10.1007/978-981-10-7560-5_107
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