Abstract: Ocean well site survey is to carry out measurement and survey of undersea rock formations, water depth, seabed topography, shallow gas and soil around the well location before spudding, which is important to ascertain the safety of drilling rigs positioning. Recently with the rapid development of Bohai Oilfield, the existing survey vessel resources are too tight to fully and timely meet the work requirements. In early 2008, the Drilling Department of Tianjin Branch proposed the assumption of well site regional survey. On the basis that the geological department provided a series of appraisal well location on the same block, the survey company designed plans to investigate a series of test wells, with an aim to understand the geological structure in complex areas, define area feature and geological characteristics distribution. Through tentative use in KL3-2 Block and successful spread in other blocks, we have not only saved half month of the survey vessel's operating time, but also saved four million investigation fee, which has created a good economic benefit for company.

Key words: regional, well site survey, Bohai Bay, economic benefit

摘要： 海洋井场调查就是在开钻前对设计井位周围的海底岩层、水深、海床地貌、浅层气及土质等情况进行测量与调查,它是保障钻井平台安全就位作业的一项重要工作。近些年随着渤海油田的快速发展,现有的勘察船资源非常紧张,不能完全及时的满足作业需要。2008年初,公司钻井部提出区域井场调查的设想,在地质部门集中提供一批同一区块的评价井位的基础上,勘察公司设计方案对一批评价井同时进行调查,其目的是为了综合区域内的地质构造,界定区域性质和地质特征分布。通过在垦利3-2区块试验应用和其他区块的成功推广,每年减少勘察船的作业时间15d和勘察费用400多万元,为公司创造了良好的经济效益。

关键词: 区域, 井场调查, 渤海湾, 经济效益