松辽盆地南部岩性圈闭识别技术及效果

寻找隐蔽油气藏一直是油气勘探中的难题,我国东部吉林油田的中浅层已进入高成熟勘探阶段,油气勘探已由早期的构造圈闭勘探转变为现今的以隐蔽圈闭勘探为主的阶段。本文针对松辽盆地南部的西部前缘带三维连片工区及伊通地堑岔路河断陷,综合应用构造精细解释、声波曲线重构波阻抗反演、层序地层学、地震相及沉积(微)相分析、模型正演、地震属性分析、频谱分解及三维可视化等技术手段,所提供的多口探井获得工业油气流或有良好的油气显示,取得了较好的解释效果。

Identification of lithologic traps in south Songliao basin and effects.

Looking for subtle oil/gas reservoir is always the difficult problem in oil/gas exploration.The mid-shallow layers in Jilin oilfield of east China have entered higher mature stage and the early exploration of structural traps was transformed to current exploration of subtle traps for majority of oil/gas exploration.In view of characters of 3D pieces-joint work area in west margin zone of south Songliao basin and Chaheji fault depression of Yitong graben,the paper comprehensively applied such techniques and tools as fine structural interpretation,wave impedance inversion by sonic curve reconstruction,sequence-stratigraphy,analysis of seismic phases and sedimentary (micro) facies,forward modeling,analysis of seismic attributes,spectrum decomposition and 3D visualization.The industrial oil/gas flow or good oil/gas show was obtained from many provided prospecting wells,which achieved good interpretation effects.