Deposition Confines Hydraulic Fracture Length

详细信息   

• 责任者：Zhang Lin （National Key Laboratory for Continental Dynamics ; Northwest University ; Xi’an 710069 ; China） ; Zhao Ximin
• 刊名：Petroleum Exploration and Development
• 出版年：2008
• 卷期：35(2)
• 关键词：储层评价 ; 沉积作用 ; sedimentation deposition ; 水力压裂 ; hydraulic fracturing
• 页码：p.201-204
• 图表：4 illus., 5 tables, 15 refs.
• 分类号：1003
• issnNo：ISSN1000-0747
• isbnNo：CN11-2360/TE

摘要

The designing of hydraulic fracture length is traditionally based on reservoirs’ physical properties and deliverability: producing formations of low permeability demand long fractures, while those of high permeability demand short fractures. However, the controlling function of deposition on hydraulic fracture length should also be considered in fluvial sedimentary formations. This paper gives evidence that river sandstone width confines fracture length using such methods as microseism, production analysis, pressure recovery, net pressure fitting. The Shihezi Formation in the Daniudi gas field is fluvial facies and hydraulic fracture surfaces orthogonalize the river orientation. Based on fracture spreading mechanisms and sandbody width, it is suggested that half fracture lengths in He 3 member be 90-120 m, and those in He 2 and He 1 members be 150-200 m.