克拉玛依油田八区二叠系冲积扇沉积特征及控藏作用  

SEDIMENTARY CHARACTERISTICS AND RESERVOIR CONTROL OF THE PERMIAN ALLUVIAL FAN IN THE EIGHTH AREA OF KARAMAY OILFIELD

作　　者：王科朋 李婷[2] 左强 曾繁哲 王智强[2] WANG Ke-peng;LI-Ting;ZUO Qiang(Urumqi Branch,Geophysical Research Institute,BGP,CNPC,Urumqi Xinjiang 830016,China)

机构地区：[1]中国石油东方地球物理公司研究院乌鲁木齐分院,新疆乌鲁木齐830016 [2]中国石油新疆油田分公司采油二厂,新疆克拉玛依834000

出　　处：《新疆石油天然气》2019年第4期6-10,I0001,共6页Xinjiang Oil & Gas

摘　　要：钻井揭示克拉玛依油田八区二叠系沉积巨厚砂砾岩,为多期冲积-洪积扇沉积相互叠置形成。油藏开发表明,不同期扇体之间及同一扇体内部含油性差异较大,在探明含油面积外扇体构造高部位部署井位,试油结果为水层,说明油水关系比较复杂,控藏因素不清,制约了该区油藏的开发进程。利用高精度三维地震资料,结合地质、测井等资料,通过沉积相研究,采用地震响应特征分析,岩性、电性对比分析等技术方法,识别冲积扇优势相带发育区,刻画冲积扇体内部有利储层结构,明确冲积扇不同部位地震响应特征,以及岩性、电性的不同,再结合油藏开发资料,建立冲积扇厚层砂砾岩油藏模式,了解冲积扇对油藏的控制作用,为八区二叠系油藏的滚动评价与开发建产提供技术支撑。The drilling reveals that the Permian sedimentary huge thick sandy conglomerate in the eighth area of Karamay Oilfield is formed by the overlapping of multi-stage alluvial-alluvial fan deposits. Reservoir development shows that there are great differences in oil-bearing property between different stages and within the same fan body. Well locations are deployed in the high part of the fan structure outside the proved oil-bearing area.The result of oil testing is water layer,which indicates that the oil-water relationship is complex and the reservoir control factors are not clear,which restricts the development process of the reservoir in this area. Using high-precision three-dimensional seismic data,combined with geological and logging data,through sedimentary facies research,using seismic response characteristics analysis,lithological and electrical comparative analysis and other technical methods,we can identify the dominant facies zone of alluvial fan,depict the favorable reservoir structure inside the alluvial fan body,and identify the seismic response characteristics of different parts of the alluvial fan. According to the different lithology and electricity,and combined with the reservoir development data,a thick sandy conglomerate reservoir model of alluvial fan is established to understand the control effect of alluvial fan on the reservoir,which provides technical support for rolling evaluation and development of Permian reservoirs in the eighth area.

关 键 词：克拉玛依油田 冲积扇 地震相 油藏模式 

分 类 号：TE122[石油与天然气工程—油气勘探]