高孔低渗裂缝性碳酸盐岩储层有效性评价--以中东地区X油田C组为例  

Effectiveness Evaluation of Fractured Carbonate Reservoir with High Porosity and Low Permeability: a Case from C Group of X Oilfield in the Middle East

作　　者：司马立强[1] 李清[1] 杨毅[1,2] 张凤生[1,3] 

机构地区：[1]西南石油大学资源与环境学院,成都610500 [2]中海石油(中国)有限公司湛江分公司,洪江524057 [3]中国石油测井有限公词油气评价中心,西安710021

出　　处：《科学技术与工程》2014年第27期187-192,共6页Science Technology and Engineering

基　　金：国家重大专项(2011ZX05031-002-006HZ)资助

摘　　要：X油田C组碳酸盐岩储层储量评价表明资源潜力巨大,但实际开发结果显示产量很低。在分析储层特征的基础上,运用测井资料结合岩心核磁、物性、压汞等分析资料,从储层岩性、物性、裂缝3个方面进行储层有效性评价。研究成果表明:储层岩性较细,连通孔隙度较低,束缚水饱和度较高,有效的储集空间较小,整体含油性较差,导致储层低产;颗粒灰岩和构造角砾岩,网状裂缝、高角度裂缝发育的储层有效性较好,属于相对优质储层。实际应用表明,C组储层有效性评价结果与录井显示、试油结果一致,为油田开发生产提供了重要的依据。Reserves evaluation of Carbonate reservoir in C group of X oilfield shows that resource potential is tremendous,but the actual development results show that the production is very low. On the basis of the analysis of reservoir characteristics,reservoir effectiveness evaluation has been carried out int erms of lithology,physical property and fractures through combining well logging data with analysis data like Nuclear Magnetic Resonance（ NMR）on core,physical property,mercury penetration etc. to analyze the reasons of the low production and summarize the characteristics of effective reservoir. Research results show that： the rocks are fine-grained,interconnected porosity is low,irreducible water saturation is high,effective reservoir space is small,oil bearing property is poor,they altogether result in low production. The effectiveness of reservoir with grain limestone,tectonic breccia,netted fracture and high angle fracture developed is good,which makes it the relatively high-quality reservoirs. Practical application shows that,reservoir effectiveness evaluation results have good consistency with mud logging and formation test results,this provides important decision-making basis for oilfield development and production.

关 键 词：C组 碳酸盐岩 裂缝 有效性评价 低产 

分 类 号：TE122.2[石油与天然气工程—油气勘探]