Research on Initial Pressure of Fracture in the Technique of Staged Fracturing of a Horizontal Well
Y. Lu1, V. V. Shelepov1, Z. Yang2, J. Liu3, J. Han1, X. Li2, J. Guo4
1Lomonosov Moscow State University, Moscow, 119991, Russia
2State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, 610500, China
3Oil Production Plant 3 of Petro China Changqing Iolfield Company, Yinchuan, 750006, China
4Shanxi CBM Exploration and Development Subsidiary Company of SINOPEC, Jincheng, 048000, China
Keywords: угольно-метановый пласт, горизонтальная скважина, кливаж, давление, многоступенчатое разрушение, coalbed methane, horizontal well, cleats, multifracture
Abstract
Based on the stress distribution model of a horizontal well, the calculation model on the fracture pressure of the coalbed methane (CBM) horizontal well is developed. This model deals not only with initiation of the matrix fracture, but also of shear and open fractures. The effects of the cleat parameters and spatial orientation of the well on the fracture character are considered.
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