胡旭飞^1,2,,
范宜仁^1,2,3,
吴非⁴,
王磊^1,2,
袁习勇^1,2
1. 中国石油大学地球科学与技术学院, 山东青岛 266580
2. 中国石油大学CNPC测井重点实验室, 山东青岛 266580
3. 海洋国家实验室海洋矿产资源评价与探测技术功能实验室, 山东青岛 266071
4. 中国石化石油工程技术研究院, 北京 100101

基金项目: 国家自然科学基金"缝洞储集体三维阻率测井基础研究"（41474100）和中国石油科技创新基金项目（2015D-5006-0303）联合资助


详细信息

作者简介: 胡旭飞, 男, 1986年生, 博士研究生, 研究方向为电法测井数值模拟.E-mail:B14010015@s.upc.edu.cn

中图分类号: P631

收稿日期:2017-12-06
修回日期:2018-07-03
上线日期:2018-11-05

Fast multiple parameter inversion of azimuthal LWD electromagnetic measurement

HU XuFei^1,2,,
FAN YiRen^1,2,3,
WU Fei⁴,
WANG Lei^1,2,
YUAN XiYong^1,2
1. School of Geosciences, China University of Petroleum, Shandong Qingdao 266580, China
2. CNPC Key Well Logging Laboratory, China University of Petroleum, Shandong Qingdao 266580, China
3. Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Shandong Qingdao 266071, China
4. Sinopec Research Institute of Petroleum Engineering, Beijing 100101, China


MSC: P631

--> Received Date: 06 December 2017
Revised Date: 03 July 2018
Available Online: 05 November 2018


摘要
摘要:大斜度井/水平井随钻测井技术已被广泛的应用于各种复杂油气藏中，但传统随钻电磁波测井仅提供仪器轴向磁场分量，井斜和各向异性对测井响应影响耦合在一起，难以剥离，无法基于反演同时获取多个参数，进行相应的地层评价，且不能提供方位信息，难以实现地质导向功能.随钻方位电磁波测井在提供仪器轴向磁场分量的基础上，还提供了仪器横向磁场分量，其提取的地质导向信号，对地层界面非常敏感，受井斜、地层电阻率对比度和各向异性影响弱，可以反演得到准确的界面位置.此外，额外的磁场分量信息，有效降低了井斜与各向异性的耦合程度，可基于反演算法实现多参数联合反演，满足电阻率测井精细解释评价需求.
关键词: 随钻方位电磁波测井/
磁场分量/
地质导向/
多参数反演

Abstract:The Logging While Drilling (LWD) technique has been widely used in high-angle and horizontal wells during exploration of complicated reservoirs. However, the traditional LWD electromagnetic measurement can only provide the longitudinal component of the magnetic field, which is along the axis of the tool. In this case, the relative dip and anisotropy would be easily coupled with each other. It is difficult to separate these parameters from inversion simultaneously. Besides, they lack the azimuthal information and cannot satisfy the requirements of geosteering. While the azimuthal LWD electromagnetic measurement can solve these problems. It can also provide the additional geologic information which is sensitive to the boundary and less sensitive to the relative dip, resistivity contrasts and the anisotropy and so on. Therefore, this method permits to determine the accurate location of the boundary through inversion of measurement data. The additional latitudinal magnetic component could also decrease the coupling degree of the relative dip and the anisotropy, especially in high-angle and horizontal wells. Thus, it is possible to use inversion to obtain the relevant parameters simultaneously to realize the accurate interpretation of resistivity well logging data.
Key words:Azimuthal logging while drilling electromagnetic measurements/
Magnetic component/
Geosteering/
Multiple parameter inversion



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