摘要
卡塔尔A区块盖层为一套厚度约450 m的二叠系海相碳酸盐岩,在盐拱的改造作用下形成了大量的裂缝。利用海底电缆宽方位角地震数据,通过应力场数值模拟、模型正演及地震方位各向异性分析等技术,对该区块碳酸盐岩盖层裂缝的密度和方向进行了综合分析,其结果可为该区块下一步优化钻井设计和降低钻井风险提供指导和依据。
The cap-rock in Qatar A block is a set of Permian marine carbonate rocks about 450 m thick, and a lot of fractures generate under the reformation of salt arch. Based on wide-azimuth seismic data of sub- marine cable, fracture density and direction of carbonate cap-rock for this block were comprehensively ana- lyzed by stress field numerical simulation, forward modeling and seismic azimuthal anisotropy analysis. The results can provide guidance and basis to optimize drilling design and reduce drilling risk for future work in the block.
出处
《中国海上油气》
CAS
CSCD
北大核心
2015年第5期31-36,共6页
China Offshore Oil and Gas
基金
"十二五"国家科技重大专项"南海深水区油气勘探地球物理关键技术(编号:2011ZX05025-001)"部分研究成果
关键词
卡塔尔A区块
碳酸盐岩盖层
裂缝密度
裂缝方向
海底电缆方位角地震数据
应力场数值模拟
模型正演
地震方位各向异性
Qatar A block
carbonate cap-rock
fracture density
fracture direction
submarine cable azimuth seis- mic data
stress field numerical simulation~ forward modeling~ seismic azimuthal anisotropy
