塔河油田十区西碳酸盐岩缝洞型油藏的宏观油水分布控制因素  

Controlling factors of macroscopic oil-water distribution in fractured-vuggy carbonate reservoirs in west of area 10 in the Tahe oilfield

作　　者：曾成[1] 陈本池[2] 李宗杰[3] 马学军[3] 薛明喜 ZENG Cheng;CHEN Benchi;LI Zongjie;MA Xuejun;XUE Mingxi(State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,CAS,Guiyang,Guizhou 550081,China;Oil Field Department of Science and Technology Ministry,SINOPEC,Beijing 100728,China;Petroleum Exploration and Production Research Institute,SINOPEC Northwest Oilfield Company,Urumqi,Xinjiang 830001,China;SINOPEC Petroleum Exploration and Production Research Institute,Beijing 100728,China)

机构地区：[1]中国科学院地球化学研究所/环境地球化学国家重点实验室,贵阳550081 [2]中国石油化工股份有限公司/科技部油田处,北京100728 [3]中国石油化工股份有限公司西北油田分公司/勘探开发研究院,乌鲁木齐830001 [4]中国石油化工股份有限公司石油勘探开发研究院,北京100728

出　　处：《中国岩溶》2020年第1期71-79,共9页Carsologica Sinica

基　　金：中国石油化工股份有限公司研发项目(P15111,P18070-5);中国石油化工股份有限公司西北分公司研发项目(34400008-18-ZC0607-0030、34400008-18-ZC0607-0031)。

摘　　要：塔河油田奥陶系碳酸盐岩缝洞型油藏的储层非均质性强,油水分布状况复杂。弄清其在区域尺度上(10 km×10 km)的宏观油水分布规律,对于缝洞型油藏开发过程中的控水稳油意义重大。本文以塔河油田十区西为研究区,在全方位高精度三维地震数据处理、解释和反演的基础上,对岩溶古构造和开发过程中的油水动态进行综合分析,探讨研究区碳酸盐岩缝洞型油藏的油水宏观平面分布格局的控制因素。结果表明:研究区在加里东中期第I幕岩溶发生期形成了相对均匀的古岩溶含水层,在海西早期油气充注进古岩溶含水介质以后,海西晚期发生的深部热液活动对缝洞体进行了封闭定容,造成缝洞分隔,并且奠定了目前油水在平面上的宏观分布格局。Ordovician carbonate fractured-vuggy reservoirs in the Tahe oilfield have strong heterogeneity and complex oil-water distribution. It is of great significance for controlling water and stabilizing oil production in fracturedvuggy reservoirs to reveal the macroscopic oil-water distribution law at a regional scale(10 km × 10 km). Based on the work of omni-directional and high-precision three-dimensional seismic data processing,inversion and interpretation,this paper comprehensively analyzes the karst paleostructure and the oil-water regime in the process of oilfield development,and discusses the controlling factors of the macro-horizontal distribution pattern of oil-water in carbonate fractured-vuggy reservoirs in the Tahe oilfield. The results show that a relatively homogeneous paleokarst aquifer was formed in the middle Caledonian Episode I karst period. After hydrocarbon was injected into the paleokarst aquifer medium in the early Hercynian period,deep hydrothermal activity in the late Hercynian period sealed and fixed the fracture-cave body,resulting in fracture-cave separation,and established the present macroscopic distribution pattern of oil and water in the reservoirs.

关 键 词：塔河油田 碳酸盐岩 古岩溶 缝洞型储层 油水分布 

分 类 号：P618.13[天文地球—矿床学]