石油物探2018，Vol.57Issue(1)：140-147,8.DOI:10.3969/j.issn.1000-1441.2018.01.018
OVT域方位各向异性技术在中非花岗岩裂缝预测中的应用研究
Application of azimuthally anisotropy by OVT gather for granite fracture prediction in Central Africa
摘要
Abstract
Fracture prediction is one of the challenges in the exploration and development of granite fractured reservoirs.Based on geological characteristics of granite fracture,this paper optimally selects sensitive offsets and azimuth OVT gathers,and then pre-dicts fracture strength and strike using P-wave azimuthal anisotropy technology.Meanwhile,the FMI logging and testing data are used synthetically to obtain the fracture strength and strike with actual geological significance.Results from field tests on granite fractured reservoirs in Central Africa showed that the prediction of fracture development characteristics for granite basement are in agreement with the structural geology characteristics in the study area.The prediction of fracture strike in single wells is in agree-ment with FMI logging results,and the prediction of fracture strength is in agreement with fluid production of oil testing.The frac-ture prediction accuracy is improved to 80％ from 50％ by poststack seismic data.The test results show that the proposed method of azimuthal anisotropy is effective for granite fracture prediction by well-seismic joint.关键词
OVT道集/花岗岩基底/方位各向异性/裂缝预测/裂缝强度/裂缝走向Key words
OVT gather/granite basement/azimuthally anisotropy/fracture prediction/fracture strength/fracture strike分类
天文与地球科学引用本文复制引用
夏亚良,魏小东,王中凡,曹晖,张素红,陈刚,王迎晓..OVT域方位各向异性技术在中非花岗岩裂缝预测中的应用研究[J].石油物探,2018,57(1):140-147,8.基金项目
国家科技重大专项(2011ZX05029)和中国石油天然气股份有限公司科技攻关项目(2013D-0902)联合资助. This research is financially supported by the National Science and Technology Major Project of China (Grant No.2011ZX05029)and the Scientific and Technological Project of PetroChina Co Ltd.(Grant No.2013D-0902). （2011ZX05029）
