【摘要】 沙河街组为JX油田主要含油层位之一,由于埋深大、海上地震采集干扰多等因素,难以通过地震手段精细刻画及描述储层,给油田早期开发带来诸多困难。充分利用地震、测井等资料,判别古地貌为沉积主控因素,利用古地貌反映地层厚度变化,结合砂地比绘制砂岩厚度图,建立储层定量描述方法,同时,利用测井相及地震相,判别砂体边界及叠加样式,可较好解决开发井实施的问题。从开发井实施效果看,开发井实钻油层厚度达到设计的1.5～6.0倍,储量较钻前增加300×104 t;平均单井日产100 t,为钻前设计产能的1.5倍;油田采收率达到30.1%,较钻前提高7.8%。更多还原

【Abstract】 Shahejie formation is one of the main oil-bearing formations of JX oilfield,due to the factors such as deep buried depth,much interference in marine seismic acquisition and etc,it is difficult to carry out accurate reservoir description by means of seismic technology and brings much difficulty for early oilfield development.By making full use of seismic data and logging data,the paleogeomorphology is found to be the main control factor of sedimentary.According to paleogeomorphic features,the reservoir thickness variance has been reflected.Combined with sandstone thickness map,quantitative reservoir description method has been established.At the same time,the sand body boundary and superimposed style have been distinguised by using logging facies and seismic facies so as to resolve the problem of drilling development well.From the implementation effect of development well,the real drill reservoir thickness is 1.5~6.0 times than previous design.The reserve volume increases 300×104t than previous design.The average daily production per well is 100 t/d,which is 1.5 times than previous design.And the oilfield recovery ratio reaches 30.1%,improving 7.8% than before.更多还原