基于微地震监测技术的油田开发方案调整及效果——以辽河探区J2块为例  

Adjustment and effect of oilfield development based on microseismic monitoring technology:a case study from the block J2 in Liaohe exploration area

作　　者：赵超峰 张伟 田建涛 莫贵初 任丽莹 程志超 李金伟 赵建宇 徐海峰 ZHAO ChaoFeng;ZHANG Wei;TIAN JianTao;MU GuiChu;REN LiYing;CHENG ZhiChao;LI JinWei;ZHAO JianYu;XU HaiFeng(College of Earth Science,Northeast Petroleum University,Daqing 163318,China;Liaohe Geophysical Exploration Company,Bureau of Geophysical Prospecting INC.,CNPC,Panjin 124010,China)

机构地区：[1]东北石油大学地球科学学院,大庆163318 [2]中国石油集团东方地球物理勘探有限责任公司辽河物探分公司,盘锦124010

出　　处：《地球物理学进展》2022年第1期320-327,共8页Progress in Geophysics

摘　　要：微地震监测技术是联系储层和压裂的桥梁和纽带.针对老油田精细开发的需求,开展基于微地震监测技术的油井压裂效果评价和开发方案调整应用研究,并形成技术流程.准确定位微地震事件基础上,定量描述压裂裂缝参数;综合研究区地质资料、井资料、压裂施工数据等解释压裂裂缝形成,并用生产数据验证,准确评价压裂改造效果;利用压裂裂缝纵向特征认识储层隔夹层的影响,指导水平井纵向位置优化,利用压裂裂缝平面特征指导水平井的井排、井距、方向设计.辽河探区J2块应用结果表明:J2-H1井压裂纵向动用跨度小,Ⅱ油组未得到有效改造,指导了Ⅱ、Ⅲ油组分两套层系开发且水平井部署在各油层组中部,提高储量动用程度;监测数据和周边井生产数据证实压裂缝长在100 m左右,单井对油藏改造规模有限,指导形成了大液量大排量压裂施工和多口水平井立体开发的方案.该研究成果支撑了J2块水平井体积压裂扩大试验和区块整体开发.Microseismic monitoring technology is the bridge and link between reservoir and fracturing. According to the demand of fine development of old oilfield, the application research of oil well fracturing effect evaluation and development scheme adjustment based on microseismic monitoring technology is carried out. Based on the accurate positioning of microseismic events, the fracture parameters are quantitatively described;the formation of fracture is interpreted by comprehensive geological data, well data, fracturing construction data, etc. in the study area, and verified by production data, so as to accurately evaluate the effect of fracturing reconstruction;use the vertical characteristics of fracture to understand the influence of reservoir interlayer, guide the optimization of vertical position of horizontal well, and use the plane characteristics of fracture to guide the design of well row, well spacing and direction of horizontal well. The application results of block J2 in Liaohe exploration area show that the vertical production span of well J2-H1 is small, and the second oil formation has not been effectively reformed, which guides the development of the second and third oil formation in two sets of strata, and the horizontal wells are arranged in the middle of each oil formation, thus improving the production degree of reserves;monitoring data and production data of surrounding wells confirm that the fracture length is about 100 m, and the scale of single well to reservoir reconstruction is limited, which guides the formation of fracturing construction with large fluid volume and large displacement and three-dimensional development plan of multiple horizontal wells. The research results support the volume fracturing expansion test and the overall development of block J2.

关 键 词：微地震监测技术 油田开发调整 压裂评价 隔夹层 裂缝参数 

分 类 号：P631[天文地球—地质矿产勘探]