A Case Study on the Optimal Design of the Horizontal Wellbore Trajectory for Hydraulic Fracturing in Nong’an Oil Shale
作者: Ying ZhuHan ZhangDongbin PanLianghao ZhaiShuai GaoYing ZhangChen Chen
作者单位: 1College of Construction Engineering, Jilin University, Changchun 130026, China; yingzhu18@mails.jlu.edu.cn (Y.Z.); hanz16@mails.jlu.edu.cn (H.Z.); pandb16@mails.jlu.edu.cn (D.P.); dilh17@mails.jlu.edu.cn (L.Z.); ying_zhang17@mails.jlu.edu.cn (Y.Z.)
2Key Laboratory of Drilling and Exploitation Technology in Complex Conditions, Ministry of Natural Resources, Changchun 130026, China
3Institute of Marine Science and Technology, Shandong University, Qingdao 266000, China; shuaigao90@126.com
4Shandong Provincial Bureau of Geology & Mineral Resources 801 Branch of Hydrogeology and Engineering Geology, Jinan 250014, China
刊名: Energies, 2020, Vol.13 (1)
来源数据库: Multidisciplinary Digital Publishing Institute
DOI: 10.3390/en13010286
关键词: Hydraulic fracturingFracture initiationOil shaleBedding planesHorizontal wellbore trajectory
原始语种摘要: A horizontal well with hydraulic fractures is key to forming a fracture network in oil shale for the generated hydrocarbon flows. By considering the influence of anisotropic strength, a prediction model is proposed for fracture initiation by studying different fracture initiation modes (FIMs) in oil shale: failure of the intact rock matrix and of the bedding planes. Through a case study on Nong’an oil shale, the influences of wellbore trajectory and bedding planes on the fracture initiation pressure (FIP), location (FIL), and FIM were analyzed and the induced changes in wellbore trajectory design were concluded. The preferred angle between the wellbore axis and the minimum horizontal principal stress was the same of 90° or 270°, when the lowest required FIP corresponded to the failure of...
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  • shale 页岩
  • hydrocarbon 碳氢化合物
  • fracture 断口
  • horizontal 水平线
  • trajectory 轨道
  • bedding 层理
  • initiation 创始
  • preferred 可取
  • intact 完整的
  • angle