雷家地区沙四段致密油储层改造因素分析  

Stimulation Analysis of Sha 4 Tight Oil Reservoirs in Leijia

作　　者：刘世瑞[1] 李杨[2] 张子明[2] 

机构地区：[1]东北石油大学,黑龙江大庆163318 [2]中国石油辽河油田分公司,辽宁盘锦124010

出　　处：《特种油气藏》2016年第1期58-61,153-154,共4页Special Oil & Gas Reservoirs

基　　金：中国石油股份公司重大科技专项"辽河油田原油千万吨持续稳产关键技术研究"课题(2012E-30)

摘　　要：针对渤海湾盆地辽河坳陷雷家地区沙四段致密油储层勘探程度较低、开发难度较大的问题,综合利用测录井及岩心实验等资料,对雷家沙四段的储层特征进行了研究和室内评价。将该地区岩石划分为3类16种岩性,确定微裂缝发育、孔渗能力好的泥晶云岩为优势岩性。从工程上分析了储层敏感性、天然裂缝发育程度、脆性、地应力差等压裂改造影响因素,并通过多井次的压裂工艺尝试和探索,确定了"大排量、大液量"的复合体积压裂工艺为该地区的有效储层改造方案。Leijia Sha4 tight oil reservoirs in Liaohe Depression of Bohai Bay Basin are characterized by relatively low exploration level and great development challenge. The well logging,mud logging and core test data are comprehensively used to characterize and evaluate Leijia Sha4 tight oil reservoirs. The rock in this region is divided into 16 kinds of lithology with 3 categories and the favorable lithology is micritic dolomite with well- developed micro fractures and high porosity and high permeability. The stimulation factors are analyzed in engineering,which include reservoir sensitivity,natural fracture development,brittleness,geo- stress difference,etc. The 'high- rate,large volume'composite volume fracturing technology is determined as the effective reservoir stimulation program in this region by multi- well- time fracturing attempt and explore.

关 键 词：致密油 储层特征 储层改造 雷家地区 辽河坳陷 

分 类 号：TE348[石油与天然气工程—油气田开发工程]