渤海油田储层特征及敏感性评价

针对渤海油田某区块注水开发过程中出现的储层损害问题,笔者根据渤海油田的岩性、物性资料进行储层特征综合分析。从储层孔渗特征、油藏特征、原油性质、地层温度与压力、地层水组分、黏土矿物分析等方面对油田储层主要损害因素进行初步的诊断,然后通过室内敏感性试验评价其损害程度。试验结果表明,储层敏感性的损害程度为中等偏强水敏、弱酸敏、弱应力敏感、弱碱敏、无速敏。为该地区调整方案和高效开发提供依据。

Characteristics and Sensitivity of Bohai Reservoir

Based on the lithologic and physical properties of the Bohai oilfield, the reservoir characteristics are analyzed comprehensively. Based on the characteristics of reservoir porosity and permeability, reservoir characteristics, crude oil properties and formation temperature, the reservoir characteristics of Bohai oilfield are analyzed. And the main damage factors of the oil field reservoir were analyzed by the method of pressure sensitivity, formation water composition and clay mineral analysis. The main damage mechanism and damage degree were evaluated by laboratory sensitivity test. The results show that the damage degree of reservoir sensitivity Weak sensitivity, weak acid sensitivity, weak alkali sensitivity, no speed sensitivity, the adjustment program for the region and provide the basis for efficient development.