高邮凹陷戴南组断层—岩性油藏成藏体系及主控因素研究

Accumulation system and controlling factors of fault-lithologic reservoirs of Dainan Formation in Gaoyou Sag, Northern Jiangsu Basin

董才源 刘震 刘启东 罗贝维 李储华 王伟俊

Dong Caiyuan Liu Zhen Liu Qidong Luo Beiwei Li Chuhua Wang Weijun

中国石油勘探开发研究院, 北京 100083 2. 中国石油大学(北京)油气资源与探测国家重点实验室, 北京 102249 3. 中国石油化工股份有限公司 江苏油田分公司 地质科学研究院, 江苏 扬州 225009

PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China 2. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China 3. Geoscience Institute, SINOPEC Jiangsu Oilfield Company, Yangzhou, Jiangsu 225009, China

基于控藏断层封闭性能演化、油藏含油层位和戴南组"五高导"泥岩段生烃能力的差异,高邮凹陷戴南组断层—岩性油藏成藏体系可分为3种类型,依次为自源型、它源型和混源型油气成藏体系。自源型成藏体系主要分布在邵伯、樊川次凹深处,典型油藏为邵深1油藏;它源型油藏主要分布在马家嘴、周22和邵18等油藏区域;混源型油藏以联3、联7和永22等油藏为代表。高邮凹陷戴南组断层—岩性圈闭成藏主要受油源和运移通道控制,即"二元主控"。在成藏体系分布和主控因素分析的基础上,提出黄珏—马家嘴、联盟庄—永安和曹庄—肖刘庄地区是高邮凹陷戴南组断层—岩性油藏分布的最有利区带。

Based on the studies of fault sealing evolution, oil-bearing formation and hydrocarbon generation ability of highly-conductive mudstones in the Dainan Formation, the fault-lithologic reservoir systems of the Dainan Formation in the Gaoyou Sag have been classified into 3 types, including self-sourced, other-sourced and mixed-sourced. The self-sourced accumulation systems mainly locate in the deep Shaobo and Fanchuan Sags, and the Shaoshen1 resrvoir is typical. The other-sourced accumulation systems mainly distribute in the Majiazui, Zhou22 and Shao18 reservoirs. The mixed-sourced accumulation systems are represented by the Lian3, Lian7 and Yong22 reservoirs. The fault-lithologic reservoirs of the Dainan Formation in the Gaoyou Sag are controlled by2 elements, oil source and migration pathway. The favorable zones for exploration include Huangjue-Majiazui, Lianmengzhuang-Yongan and Caozhuang-Xiaoliuzhuang.

国家重大科技专项(2008ZX05007-002)。

https://doi.org/10.11781/sysydz201304395