Z2断块储层特征研究

应用恒速压汞以及核磁共振技术研究了Z2断块低渗透储层的微观孔隙结构以及可动流体特征,并分别建立了主流喉道半径、可动流体百分数与储层渗透率的关系;最终以主流喉道半径、可动流体百分数、粘土矿物含量、原油粘度为指标,依据储层评价标准,对Z2断块的三个层系进行了储层分类1,分类结果表明,三个层系均为Ⅰ-Ⅱ类储层,开发较为容易。研究成果为分析评价同类储层并指导增储上产提供了可靠的科学依据。

Reservoir Characteristics of Z2 Block

The constant-rate mercury injection technology and nuclear magnetic resonance technology were applied to research the microscopic pore structure and movable fluid characteristics of the low permeability reservoirs of Z2 Block.The relationships of the major throat radius and movable fluid percentage to the permeability were established respectively.Finally,the major throat radius,movable fluid percentage,clay content and formation oil viscosity were taken as the evaluation parameters,and the 3 strata of Z2 Block were evaluated.The evaluation results indicated that the reservoirs of Z2 Block are of Class Ⅰ~Ⅱ.The research results are expected to instruct the development of the low permeability reservoirs of J Z2 Block.