摘要
济阳坳陷页岩油是在新生代陆相断陷咸化湖盆沉积的半深湖—深湖相富有机质、富碳酸盐页岩中富集的中—低、中—高演化程度的页岩油,丰度高、资源潜力大,与北美海相盆地和国内其他陆相盆地页岩油有所不同。回顾济阳坳陷页岩油50年的勘探历程,可分为勘探偶遇、主动探索、创新突破3个阶段,目前已在东营凹陷沙河街组沙四上亚段、沾化凹陷沙三下亚段取得了中等热演化程度富碳酸盐纹层基质型、高热演化程度富碳酸盐纹层状—层状基质型等多层系、多类型页岩油勘探的战略性突破,同时低热演化程度富碳酸盐纹层基质型页岩油也取得重要进展。通过近10年的科研攻关与勘探实践,提出济阳坳陷页岩岩相划分方案,取得富有机质页岩储集性、含油性、可动性、可压裂性创新性认识,建立济阳坳陷页岩油“四性”为核心的20项参数地质评价体系,配套地质、工程甜点地球物理预测与钻井工程、压裂工艺技术,形成了适合济阳坳陷地质特点的页岩油“一体化”运行管理模式,有效指导了济阳坳陷页岩油勘探实践。
In Jiyang Depression,the organic rich and carbonate rich shale of semi deep-deep lake facies is developed of the Cenozoic salinized continental fault rift basin,and the shale oil is featured by medium-low and medium-high maturity,with high abundance and great resource potential,which is different from that in North American marine basins and other continental basins in China.Looking back to the shale oil exploration history for 50 years in Jiyang Depression,it can be divided into three stages,i.e.,accidental discovery,active exploration and innovation breakthrough.At present,strategic achievements of multiple series and multiple types shale oil have been made in medium-maturity carbonate-rich lamina matrix type and high-maturity carbonate-rich lamina-thin layer matrix type shale in the upper part of the fourth member of Shahejie Formation in Dongying Sag and the lower part of the third member of Shahejie Formation in Zhanhua Sag,as well as major progress in low-maturity carbonate-rich lamina matrix type shale.More than 10 years’study and exploration practice have enabled to establish the lithofacies division scheme of shale in Jiyang Depression,obtain the innovative understanding of reservoir performance,oil bearing,oil mobility and fracability of organic shale,establish a geological evaluation system including 20 parameters with the core of“four properties”,develop the supporting geological,engineering and geophysical prediction,drilling engineering and fracturing technologies,and form the integrated operation and management mode adapted to geological characteristics of Jiyang Depression,which has effectively guided shale oil exploration practice in Jiyang Depression.
作者
刘惠民
Liu Huimin(Sinopec Shengli Oilfield Company)
出处
《中国石油勘探》
CAS
CSCD
北大核心
2022年第1期73-87,共15页
China Petroleum Exploration
基金
国家科技重大专项“中国典型盆地陆相页岩油勘探开发选区与目标评价”(2017ZX05049)
中国石化科研攻关项目“济阳坳陷页岩油可动性主控因素与甜点评价”(P19017-6)。
关键词
济阳坳陷
页岩油
勘探历程
创新认识
“四性”参数体系
潜力方向
Jiyang Depression
shale oil
exploration history
innovative understanding
“four properties”parameter system
exploration orientation
