摘要
渤海海域QHD33—1S构造评价面临构造幅度低、圈闭面积小、构造-岩性和岩性圈闭等一系列隐蔽性强、勘探难度大等问题，而且构造区存在明显的低速度异常。为了更加精确地落实该区域的构造形态，针对该区地质特点和低幅构造特征探索出适合该区域的变速成图方法——地震平均速度场＋井速度场＋趋势种子点，有效地提高了速度场和变速成图精度。实践表明，该方法是针对海上低幅构造区勘探目标进行精细刻画的有效方法。
A series of the strongly-concealed and difficult-to-explore problems are faced in the evaluation process of QHD33-1S structure in Bohai Sea： low-amplitude structures, small trapped area, structural-lithologic and lithologic traps etc. , the structural area is obviously characterized by low-velocity anomaly. In order to make more clear of the structural configurations in the region, in light of the geological properties and low-amplitude characteristics of the region, the mapping method by variable velocities is explored-average seismic velocity field ＋ well velocity field and trend seed-point. The method effectively improves the precisions of velocity field and variable velocity map- ping, and furthermore becomes an effective and finely characterizing method of the exploration targets for the low- amplitude structures off Bohai Sea.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2012年第5期166-169,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
国家油气重大专项课题（2008ZX05007-03）和博士学科点专项基金项目（20060220002）.
关键词
渤海海域
低幅构造
速度陷阱
变速成图
Bohai Sea
low amplitude structure
velocity pitfall
variable velocity mapping
