马厂油田高密度三维地震资料研究及应用  

The Research and Application of High-density 3D Seismic Data in Machang Oilfield

作　　者：马青印[1] 陈华[1] 张丽霞[1] 

机构地区：[1]中国石化中原油田分公司采油六厂,山东东明274501

出　　处：《中外能源》2014年第1期49-52,共4页Sino-Global Energy

摘　　要：马厂油田位于东濮凹陷中央隆起带南部，区域构造面积为131．94km^2资源量为1850×10^4t。截止到2005年，累计探明含油面积为22．74km^2，探明石油地质储量为1473．5×10^4t，动用石油地质储量为871×10^4t，标定采收率为33．75％，可采储量为294×10^4t，其中外围区块探明未动用储量为602．5×10^t4，占马厂油田探明储量的40．89％。该区储层平均孔隙度为18．6％．渗透率为31．6mD。主要含油层系为沙三上中下亚段。埋深范围在2600～3400m，属中低渗极复杂断块油藏。经过近20年的开发，原有地震资料已不能满足极复杂断块油藏精细滚动勘探开发的需要，马厂油田周边断块储量动用程度低，老区又进入了开发后期，油田开发效果逐渐变差。为提高地震资料品质，指导油田滚动开发研究，2005年对马厂地区进行了高密度三维地震数据采集，通过近几年的研究和应用，滚动勘探开发效果明显改善。Machang oilfield locates area is 131.94km^2, and reserves are in the south of the central uplift zone in Dongpu sag.Its regional tectonic 1850×10^4t.By the end of 2005,its total proven oil-bearing area has been 22.74km^2,proven geological reserves has been 1473.5×10^4t,and produced geological reserves has been 871×10^4t.The rated oil recovery is 33.75%,so the recoverable reserves are 294×10^4t.The proven unproduced re- serves in external block are 602.5×10^4t,which takes for 40.89% of the total proven reserves in Machang oil- field.Its main oil-bearing interval is middle and lower submember of No.3 member of Shahejie formation of Paleogene.The average porosity is 18.6%,the permeability is 31.6mD and the buried depth is 2600-3400m. Then the Machang oilfield is the complex fault-block reservoirs with middle to low permeability.Mter nearly 20 years＇ development,the existing seismic data could not meet the demands of the fined rolling exploration and development at the complex fault-block reservoirs.The reserves around the main blocks is at the low de- velopment level,while the main blocks came into the later stage of development and the development effect gradually turned poor.In 2005,high-density 3D seismic data was picked up in Machang oilfield in order to improve the quality of seismic data and guide the rolling development research.Through the recent years＇ re- search and application ,the results of the rolling exploration and development have been obviously improved.

关 键 词：高密度三维地震 复杂断块 综合应用 马厂油田 

分 类 号：P631.4[天文地球—地质矿产勘探]