三塘湖盆地油气勘探历程与启示

Petroleum exploration history and understandings in Santanghu Basin

三塘湖盆地油气勘探始于20世纪50年代,50—80年代基本以地面地质调查和局部勘探为主,大规模油气勘探始于90年代并取得了丰硕成果。回顾六十多年的油气勘探实践,系统梳理了三塘湖盆地石油地质研究与认识、勘探领域及勘探成果,基于钻井、地震、储量及产量等数据分析,将三塘湖盆地油气勘探历程划分为地质普查、砂岩油藏勘探、火山岩油藏勘探、致密油勘探4个阶段。以油气勘探各阶段勘探思路、科技创新、勘探技术、重大勘探成果为主线,系统总结了各个阶段的勘探启示以及对勘探产生重要影响的成果及认识,形成了侏罗系低渗低压砂岩油藏、火山岩油藏和凝灰岩致密油藏的成藏地质理论和勘探开发技术,有效推动了三塘湖盆地油气勘探的持续突破,同时期望指导三塘湖盆地下一步油气勘探工作。

The oil and gas exploration in the Santanghu Basin began in the 1950s,and from 1950s to 1980s,it mainly focused on surface geological surveys and local exploration.Large-scale oil and gas exploration began in 1990s and achieved good results.Looking back on 60 years of oil and gas exploration practice,the theory of petroleum geology,exploration fields and exploration achievements in Santanghu Basin are reviewed.Based on the analysis of drilling,seismic,reserves,and production data,the exploration process is divided into four stages:geological survey,sandstone reservoir exploration,volcanic reservoir exploration,and tight oil exploration.Taking exploration ideas,scientific and technological innovation,exploration technology and major exploration achievements in each stage as the main line,the exploration enlightenment as well as the achievements and understandings that have big influence on exploration are summarized.And then the geological theory and exploration and development technology of Jurassic low permeability and low pressure sandstone reservoir,volcanic rock reservoir and tuff tight reservoir were formed,which promoted the continuous breakthrough of exploration in Santanghu Basin,and provided guidance in the next step.