基于微地震监测的新民油田水力压裂缝网形态对比分析  

Comparison and Analysis of Hydraulic Fracturing Pattern in Xinmin Oilfield Based on Microseismic Monitoring

作　　者：田佳 张勇[2] 胡佳男 TIAN Jia;ZHANG Yong;HU Jia′nan(School of Earth Sciences and Engineering Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi′an Shiyou University,Xi′an 710065,China;Yingtai Oil Production Plant of Jilin Oilfield Company,Songyuan Jilin 138000,China;Fuyu Oil Production Plant of Jilin Oilfield Company,Songyuan Jilin 138000,China)

机构地区：[1]西安石油大学地球科学与工程学院/陕西省油气成藏地质学重点实验室,西安710065 [2]吉林油田公司英台采油厂,吉林松原138000 [3]吉林油田公司扶余采油厂,吉林松原138000

出　　处：《重庆科技学院学报（自然科学版）》2022年第6期31-37,共7页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：陕西省自然科学基础研究计划资助项目“VTI介质解耦波场的多尺度微地震逆时干涉定位方法研究”(2019JQ-817);陕西省教育厅科研计划资助项目“基于NARX动态神经网络的微地震有效事件自动拾取方法研究”(19JK0661);陕西省高校科协青年人才托举计划资助项目“多尺度解耦波场微地震逆时干涉定位方法研究”(20190704)。

摘　　要：基于微地震监测技术,研究位于松辽盆地南部的新民油田水力压裂缝网形态。优选研究区内3口压裂井,针对扶余油层进行井下微地震监测,采用基于S变换的时频谱有效事件自动拾取技术和概率密度坍塌网格搜索法计算震源的空间位置,对比压裂缝的几何形态特征和动态扩展规律。研究结果表明,区内的最大水平主应力方向为北东向,3口压裂井沿西北—东南方向的裂缝复杂程度依次降低、规模依次增加。此外,缝长、缝高均与加砂总量、累计液量呈明显的线性正相关性,但是缝宽、裂缝复杂指数与其压裂施工参数的相关性不明显。Based on microseismic monitoring technology,the pattern of water pressure fracture network in Xinmin Oilfield located in the south of Songliao Basin is studied.Three fracturing wells in the study area are selected for downhole microseismic monitoring of Fuyu oil layer.The spatial location of the source is calculated by using the time-frequency spectrum effective event automatic pickup technology based on S transform and the probability density collapse grid search method,and the geometric shape characteristics and dynamic expansion laws of the fracturing fractures are compared.The microseismic monitoring results demonstrate that the maximum horizontal principal stress direction in this study area is northeast.From northwest to southeast,the fracture complexity of the three treatment wells in the study area decreases successively while the fracture volume increases successively.In addition,the length and height of the fractures in the study area are positively correlated with the total amount of sand and the total amount of fluid.However,the fracture width and fracture complexity index is not obviously correlated.

关 键 词：松辽盆地 微地震监测 压裂缝网形态 偏震 震源 

分 类 号：P618[天文地球—矿床学]