Abstract
Horizontal Wells of intermediate-basic volcanic gas reservoir in Songliao Basin have low production after fracturing and weak stable production ability. How to set fracture spacing reasonably and improve recovery percent is the key to increase production. Based on the seepage theory, three methods of productivity maximization, orthogonal factor Z-value maximization and seepage interference theory are used to study and analyze the reasonable fracture spacing matching relationship between reservoirs with different permeability conditions.The results show that, with the decrease of fracture spacing, the recovery percent increases, but the growth is getting smaller and smaller. When the fracture spacing decreases to a certain value, the recovery percent is very small with the increase of fracture spacing, which is called the critical fracture spacing (90% of the maximum recovery percent), and the smaller the reservoir permeability, the smaller the critical fracture spacing. In a certain permeability level, there is an optimal fracture spacing value, the best fracturing effect. The optimal fracture spacing chart of intermediate-basic volcanic rocks was established and the functional relationship between the optimal fracture spacing, corresponding optimal recovery percentand reservoir permeability was fitted, which can provide reference for the optimization design of fracturing process parameters of similar reservoir.
Copyright 2023, IFEDC Organizing Committee.
This paper was prepared for presentation at the 2023 International Field Exploration and Development Conference in Wuhan, China, 20–22 September 2023.
This paper was selected for presentation by the IFEDC 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 Technical Team and are subject to correction by the author(s). The material does not necessarily reflect any position of the IFEDC Technical Committee its members. Papers presented at the Conference are subject to publication review by Professional Team of IFEDC Technical Committee. Electronic reproduction, distribution, or storage of any part of this paper for commercial purposes without the written consent of IFEDC Organizing Committee 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. Contact email: paper@ifedc.org.
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Zhang, Xy. (2024). Optimization of Fracture Spacing in Horizontal Well of Intermediate-Basic Volcanic Gas Reservoir. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2023. IFEDC 2023. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-97-0260-2_52
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DOI: https://doi.org/10.1007/978-981-97-0260-2_52
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