陆相页岩油水平井开发合理生产制度优化——以苏北盆地A区块阜二段为例  

Optimization of rational production system for horizontal well development in continental shale oil:A case of the second member of Funing Formation in Block A of Subei Basin

作　　者：葛政俊[1] 罗钰涵[2] 谌廷姗[1] 毕天卓[1] 卢显荣[1] GE Zhengjun;LUO Yuhan;CHEN Tingshan;BI Tianzhuo;LU Xianrong(Exploration and Development Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China;Development Management Department of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)

机构地区：[1]中国石化江苏油田分公司勘探开发研究院,江苏扬州225009 [2]中国石化江苏油田分公司开发管理部,江苏扬州225009

出　　处：《复杂油气藏》2024年第1期56-61,69,共7页Complex Hydrocarbon Reservoirs

基　　金：国家自然科学基金项目“基于储层构型理论解析的三角洲相致密砂岩储集性多级次表征研究”(42172161)。

摘　　要：为了最大限度提高陆相页岩油全生命周期的采收率,并建立其水平井开发的合理生产制度。选取苏北盆地A区块阜二段为靶区,利用井震资料开展储层发育特征研究,建立“地质—开发—地应力—裂缝扩展”的地质工程一体化模型,进而对页岩油水平井开发合理生产制度进行优化研究。研究结果表明岩石类型、裂缝分布、岩石力学参数和工程施工参数是影响页岩油地质工程一体化模型精度的关键因素,确定了压后合理开井时间为20 d、合理生产压差为10 MPa、CO_(2)合理吞吐时机为井口压力下降至1.5 MPa左右、CO_(2)合理吞吐焖井时间为15 d,形成了页岩油水平井开发合理生产制度优化流程。研究成果对陆相页岩油长期稳产和效益开发具有重要支撑作用。To maximize the recovery rate of continental shale oil during its whole life cycle,a reasonable production system is established for horizontal well development.In the target area of the second member of the Funing Formation of Block A in the Subei Basin,the reservoir development characteristics were studied by using well seismic data.The integrated geoengineering model of“geology-development-geostress-fracture propagation”was established to optimize the rational production system for shale oil horizontal well development.The results show that rock type,fracture distribution,rock mechanical parameters,and engineering construction parameters are the key factors affecting the accuracy of the integrated geological engineering model for shale oil.The reasonable well opening time after fracturing is determined to be 20 days,the suitable production pressure difference is 10 MPa,the reasonable CO_(2)stimulation timing is the wellbore pressure dropping to about 1.5 MPa,and the reasonable CO_(2)stimulation soaking time is 15 days,forming the optimization process of the reasonable production system for shale oil horizontal well development.The research results play an important role in supporting continental shale oil's long-term stable production and efficient development.

关 键 词：生产制度 一体化模型 水平井 页岩油 苏北盆地 

分 类 号：TE34[石油与天然气工程—油气田开发工程]