Title

Lithological characteristics and macroscopic distribution rule of high-quality hydrocarbon source rocks in Dongpu Depression

作者

黄泽贵张云献周勇水李红磊

单位

中国石化中原油田分公司勘探开发研究院，河南濮阳 457001 中国石化中原油田分公司，河南濮阳 457001

Organization

Research Institute of Exploration and Development, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China

摘要

运用测井岩石学理论和总有机碳质量分数（TOC）数据建立优质烃源岩的岩石相和有机相模型，明确优质烃源岩的主力岩相是页岩和油页岩；采用Δlog R模型法，针对东濮凹陷不同构造单元、不同层位的烃源岩建立TOC测井预测模型，刻画东濮凹陷不同时期优质烃源岩空间展布规律，明确东濮凹陷优质烃源岩的发育具有较强的层控、相控特征，纵向上，沙四上和沙三下是优质烃源岩的主力层。受沉积相控制，盐湖背景下的优质烃源岩相比无盐地区和南部地区较发育。在盐岩韵律准层序组内，优质烃源岩主要发育在准层序的水退序列早期；平面上，优质烃源岩主要发育在环盐湖周边和沉积、沉降中心附近，优质烃源岩主要分布在盐岩和泥页岩互层的过渡型剖面类型中。

Abstract

Based on logging petrology and TOC, lithofacies and organic phase model of high-quality hydrocarbon source rocks is built, which clearly confirms that the main lithofacies of high-quality hydrocarbon source rocks are shale and oil shale. Based on Δlog R model method, TOC logging prediction model is built for hydrocarbon source rock in different horizon of different structural unit in Dongpu Depression, which describes space distribution rule of high-quality hydrocarbon resource rock in different stages of Dongpu Depression. The result indicates that the development of high-quality hydrocarbon resource rock of Dongpu Depression possesses strong strata bound and phase-controlled feature, and vertically upper Es4 and low Es3 are the main layers of high-quality hydrocarbon resource rock. Controlled by facies, high-quality hydrocarbon resource rock with salt lake setting developed better than that with no salt background and that in south area. In halite rhythm subsequence, high-quality hydrocarbon resource rock mainly developed in the early stage of water regression sequence of subsequence. Horizontally, high-quality hydrocarbon resource rock mainly developed in periphery around salt lake and near deposition center and mainly distributes in transitional section type layer of halite and mud-shale stone.

关键词：

优质烃源岩; 岩石相; 层控相控; 东濮凹陷

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Keywords:

high-quality hydrocarbon source rock; lithofacies; strata bound and phase control; Dongpu Depression

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基金项目

DOI

10.6056/dkyqt201805001

东濮凹陷优质烃源岩的岩性特征及宏观展布规律