克拉玛依油田中低渗砾岩油藏合理井距评价方法  

Method for Reasonable Well Spacing Evaluation of Medium-Low Permeability Conglomerate Reservoirs in Karamay Oilfield

作　　者：杨新平[1] 张利锋[1] 杨作明[1] 罗官幸 阳旭[1] 汪洋[1] 

机构地区：[1]中国石油新疆油田分公司勘探开发研究院,新疆克拉玛依834000

出　　处：《新疆石油地质》2015年第6期738-742,共5页Xinjiang Petroleum Geology

摘　　要：综合运用数理统计、油藏工程、特征模型正交试验等多种方法,确定了克拉玛依油田中低渗砾岩油藏合理井距的4个主控因素,分别为砂体形态系数、渗透率变异系数、渗透率和水驱油效率。通过对主控因素不同开发阶段多因素敏感性分析,找出了各主控因素的权重变化规律,并建立了中低渗砾岩油藏合理井距分阶段评价数学模型。将模型应用于已开发调整区块的井距适应性评价,验证了模型的准确性,可以为中低渗砾岩油藏合理井距评价及开发调整提供依据。Four main controlling factors of the reasonable well spacing for medium-low permeability conglomerate reservoirs in Karamay oil- field are determined by means of mathematical statistics, reservoir engineering and characteristic model orthogonal experiment, etc. They are sand-body morphology, permeability variable coefficient, permeability and oil displacement efficiency. The weight variation regulation of these main controlling factors are found by multi-factor sensitivity analysis in different stages, and then the staging evaluation mathematic models for reasonable well spacing of medium-low permeability conglomerate reservoirs are developed. The case study verifies the accuracy of these models, which can provide basis for scientific evaluation of such a reasonable well spacing and further development adjustment in the future.

关 键 词：克拉玛依油田 中低渗透率 砾岩油藏 合理井距 主控因素 

分 类 号：TE348[石油与天然气工程—油气田开发工程]