井震结合的稀疏井区相控储层分类与综合评价——以珠江口盆地WC-A油田珠江组为例

Facies-Controlled Reservoirs Classification and Comprehensive Evaluation in Sparse Well Areas Combined with Well-Seismic—Taking the Pearl River Formation of the WC-A Oilfield in the Pearl River Mouth Basin as an Example

摘要: 储层分类与综合评价是油气田开发中后期的重要研究内容，尤其是对于海上油气田，井网稀疏、井位部署风险较高，通过储层分类与综合评价，可以有效降低开发风险，对于实现油气田的精细调整挖潜有着重要的指导意义。本文以珠江口盆地WC-A油田新近系ZJ1-4油组为例，通过敏感地质参数优选、相控测井储层分类建立了三大类五小类的储层分类标准，并采用层次分析的储层预测思路雕刻了储层的岩性和物性空间分布，综合评价了不同类型储层的平面展布。运用该研究成果后续实施了多口调整井，初期平均产能达到了20 m³/d，取得了良好的开发效果，为稀疏井网油气田储层的分级分类开发提供了一条新的研究思路。

Abstract: Reservoir classification and comprehensive evaluation is an important research content in the middle and late stage of oil and gas field development, especially for offshore oil and gas fields, the well pattern is sparse and the risk of well location deployment is high. Through reservoir classification and comprehensive evaluation, the development risk can be effectively reduced, which has an important guiding significance for the realization of fine adjustment and potential tapping of oil and gas fields. This paper takes the ZJ1-4 oilgroup of the Neogene in the WC-A oilfield in the Pearl River Mouth Basin as an example, and establishes three major categories and five subcategories through the optimization of sensitive geological parameters and the classification of facies-controlled logging reservoirs. In addition, the reservoir prediction thinking using analytic hierarchy has carved out the lithological and physical properties of the reservoir, and comprehensively evaluated the plane distribution of different types of reservoirs. Using this research result, multiple adjustment wells were subsequently implemented, and the initial average production capacity reached 20 m³/d, which has achieved good development results, and provides a new research idea for the classification and development of sparse well pattern oil and gas field reservoirs.