胜利海上油田下古生界潜山油藏储层描述与开发调整

Reservoir description and development adjustment of the Lower Paleozoic buried hill 
in Shengli offshore oil field

王志伟,张凯,张本华,武群虎,刘少斌,周红科,张在振

中国石油大学（华东）石油工程学院，山东 青岛 266580 中国石化胜利油田分公司海洋采油厂，山东 东营 257237

School of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China Haiyang oil production plant, Shengli Oilfield Company, SINOPEC, Dongying 257237, China

下古生界潜山油藏是胜利海上油田的重要开发区块，由于储层埋深大、非均质性强、三维地震资料品质差，因此开发井油气产能差异较大。为了保障下古生界潜山油藏高效合理开发，文中开展了储层发育控制因素分析、储集体发育模式研究及储集体预测技术攻关，弄清了储层发育规律，提出了开发调整方案。研究结果表明：下古生界潜山油藏储层发育受岩性、断层和残留地层厚度等3个方面的影响，有效储层主要发育在距潜山顶面200 m范围以内；受多期构造应力叠加作用控制，有效储层沿断层周围展布，以裂缝型储集空间为主；形成了多方法、多参数融合的断层+裂缝+溶蚀复合储集体预测技术，实现了下古生界潜山油藏有效储层的定量预测。在此基础上，实施了下古生界潜山油藏储层开发调整方案，取得了良好的开发效果，为后续潜山油藏的开发调整提供了一定的借鉴。

Lower Paleozoic Buried Hill is an important development block in Shengli offshore oil field. However, the oil and gas productivity of each development well varies greatly because it is limited by factors such as large depth of the reservoir, strong heterogeneity and poor quality of 3D seismic data. In order to ensure the efficient and reasonable development of the Lower Paleozoic buried hill reservoirs, the analysis of the controlling factors of the reservoir development, the research of reservoir development model and reservoir prediction technology in buried-hill reservoir are carried out. The reservoir development law are found out for the development and adjustment plan. The results show that the development of the Lower Paleozoic buried hill reservoir is influenced by formation lithology, fault and the thickness of the residual strata, and the effective reservoir is distributed within 200 m thickness under the top surface of the buried hill. Controlled by multi-phase tectonic stress overlaying, the hole type of the effective reservoir with the feature of distribution around the fault is dominated by fractured reservoir space. The prediction technique of the reservoir which is the fault-fracture-dissolution pore complexus for multi-method and multi-parameter fusion is formed, which realizes quantitative prediction of the effective reservoir in the Lower Paleozoic buried hill reservoirl. On the basis of the study, it implements the development and adjustment plan of the Lower Paleozoic buried hill, and obtains the good development effect. In addition, it can provide some reference for the subsequent development and adjustment of buried hill reservoir.

10.6056/dkyqt202202006