压裂改造储层的平面均质性评价方法及压裂工艺探讨  

RESEARCH ON FRACTURING TECHNOLOGIES OF HETEROGENEOUS RESERVOIR AND THE PLANE HOMOGENEITY EVALUATION METHODS OF THE RESERVOIR FRACTURING

作　　者：苏伟东[1,2] 陈存慧 文果[1,2] 张家志[3] 黄永章[1,2] 武月荣[1,2] 

机构地区：[1]川庆钻探工程有限公司钻采工程技术研究院 [2]低渗透油气田勘探开发国家工程实验室 [3]长庆油田分公司

出　　处：《钻采工艺》2014年第5期63-65,10,共3页Drilling & Production Technology

摘　　要：为了较好的评价压裂改造储层的平面均质性,提高低渗透强平面非均质性储层的压裂效果,提出了一种评价压裂改造储层平面均质性的方法,并对强平面非均质性储层的压裂工艺进行了探讨。采用统计分析的方法分析了苏里格气田、大牛地气田的平面非均质性;采用理论分析、裂缝监测的方法评价了非均质储层的压裂改造难点;基于压裂裂缝的等效井径评价方法和产能方程,建立了压裂改造储层的平面均质性评价方法;针对裂缝的非对称性,提出了单翼裂缝压裂工艺思路。研究结果表明,强平面非均质性储层普遍存在,常规压裂改造工艺易形成两条不对称的压裂裂缝,压裂储层的等效供给半径均质性评价方法能够较好对比同一区域不同储层间的均质性,单翼裂缝压裂工艺是对强平面非均质性储层改造技术的有益探索。In order to better evaluate the plane homogeneity of the fracturing reservoir and improve fracturing effect of the low permeability and high plane heterogeneity reservoir,the evaluation method of the plane homogeneity of the fracturing reservoir was put forward and the fracturing technology of high plane heterogeneity reservoir was discussed. Using statistical analysis method analyzed the plane heterogeneity of Sulige gas field and Daniudi gas field. Adopting theoretical analysis and crack monitoring method evaluated the difficulty of the heterogeneity reservoir fracturing. Based on the equivalent hole diameter evaluation method and productivity equation of fracturing fracture,the evaluation method of the plane heterogeneity of the fracturing reservoir was established. According to the asymmetry of crack,the fracturing technology of single- wing crack was proposed. The research results showed that the high plane heterogeneity reservoir is ubiquitous,the conventional fracturing technologies was easy to form two asymmetric fracturing fractures,the equivalent hole radius evaluation method of the fracturing reservoir could better compare the homogeneity of the different reservoir in same region. The fracturing technology of single- wing crack could improve the productivity of the high plane heterogeneity reservoir.

关 键 词：平面均质性评价 压裂效果评价 单翼裂缝 压裂工艺 

分 类 号：P618.13[天文地球—矿床学] TE357[天文地球—地质学]