现河庄油田河43断块沙一段、沙二段精细油藏描述

Fine reservoir description of first and second member of Shahejie formation in He-43 block of Xianhezhuang oilfield

现河庄油田河43断块经过近40年勘探开发,产量逐年递减。为提高采收率,以断块内主要储集层沙一段、沙二段为目的层进行精细油藏描述,建立了油藏地质模型。通过分析本区构造特征,新发现断块内多条控油小断层,对分析剩余油藏潜力有重要作用;详细分析了断层与砂体在油气成藏过程中的作用以及沉积相对油层厚度的影响,确定本区油藏形成的主控因素为断层与沉积相;通过分析各段油藏的控制因素,在油藏类型方面形成新认识;通过对储集层沉积特征与分布特征的研究确定了本区油气分布特征。以上研究成果对河43断块的挖潜稳产具有重要意义。

After nearly 40 years of exploration and development,the production of He-43 block in Xianhezhuang oilfield declined year by year.To enhance oil recovery,the fine reservoir description of first and second member of Shahejie formation has been carried out and its reservoir geological model has been established.Through tectonic characteristics analysis,a number of small faults have been newly found which plays an important role in analyzing residual oil reservoir potential.After detailed analysis of the fault and sand body in the process of hydrocarbon accumulation and the effect of sedimentary facie on reservoir thickness,the main controlling factors of reservoir formation in this area has been determined,namely faults and sedimentary facie.Through the reservoir controlling factors analysis,new reservoir understandings have been formed.Through sedimentary facie and distribution characteristics analysis,the hydrocarbon distribution characteristics of this area have been determined.Therefore,the above mentioned research results are of great significance for He-43 block river potentialities and stable yield.