马厂油田沙三中砂体展布与剩余油分布研究

The Spread of Sand Facies and Distribution of Remainning Oil in Middle of Es3 of the Machang Oilfield

陈路原¹ 钟大康²

1.中原油田分公司采油六厂，2. 石油大学,北京

The No. 6 Oil Production Plant , Zhongyuan Oilfield Company ,SINOPEC, Henan 457001 , P. R. China

在沉积微相研究的基础上运用地质统计学理论及有关的三维空间插值技术对马厂油田的砂体进行精细描述和预测。结果表明:马厂油田沙三中段主要为三角洲前缘水下分流河道、河口坝、远砂坝、席状砂、水下分流河道间(即支流间湾) 以及前三角洲沉积微相沉积,砂体规模小、平面连片性差、构造破碎,断块多而小。在24 个小层中,有18 个小层具有剩余油和挖潜的可能。其中7 个小层的挖潜能力较大,5 个小层的挖潜能力中等。纵向上3 、4 小层是该油田剩余油的主要分布层位。水下分流河道是剩余油分布主要的储集体。

The Study on sand body Distribution of middle Es3 and residual oil distribution in Machang Oil Field On the base of micro-sediment study. The Autter discribed the sandbody characters of Machang Oil Field in detail by applying geologic-statistics ,and made a reasenable predication. It was proven that ,in Machang Oil Fidld ,ES3 middle is belonged to the front of delta background , and mainly the shunt riverway , bayou dam longdistant sand dam and mat-sand , etc. the sedement is mainly the front of deta environment in this region. The sand body’s tyle is small ,continuity is bad , structure’s frage. Among 24 micro-layers of 4 oil groups , there are 18 micro-layers in which could be found residual oil ,and 7 of them is much possible ,5 is middling ,others is little possible. The residual oil is mainly contained in the 3nd and forth layer. The under-water shunt riverway is the main container of residual oil. It’s a very impertant location.