渤南洼陷“济阳”夹层型页岩油评价及水平井一体化设计  

Integrated design of horizontal wells and evaluation in Jiyang interlayer shale oil of Bonan sag

作　　者：李志鹏 杨勇 杜玉山 王玮 卜丽侠 LI Zhipeng;YANG Yong;DU Yushan;WANG Wei;BU Lixia(Exploration and Development Reacher Institute of Shengli Oilfield Company,Dongying 257015,China;Dongxin Oil Extraction Plant of Shengli Oilfield Company,SINOPEC,Dongying 257015,China)

机构地区：[1]中国石油化工股份有限公司胜利油田分公司勘探开发研究院,山东东营257015 [2]中国石油化工股份有限公司胜利油田分公司东辛采油厂,山东东营257015

出　　处：《中国石油大学学报（自然科学版）》2023年第2期24-35,共12页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家科技重大专项(2017ZX05072);中国石油化工股份有限公司课题(P20069-2)。

摘　　要：为形成陆上断陷盆地夹层型页岩油地质工程一体化评价及水平井一体化设计方法,通过一体化理念,利用地质综合分析及数据统计分析等方法,对渤南洼陷“济阳”夹层型页岩油开展地质工程一体化研究。对比济阳坳陷页岩油的典型特征及与中国其他页岩油的主要差异,初步提出“济阳”页岩油概念。系统研究渤南洼陷“济阳”夹层型页岩油的夹层、构造、地应力、物性、地化参数、天然裂缝及压裂改造特征,建立综合夹层、天然裂缝、压裂改造性的地质工程一体化甜点评价方法。形成地质工程制约条件下的水平井一体化设计方法,具体包括地质工程甜点、断层特征及水平段长度定方案部署区域,地面井台与压裂裂缝方向相结合定水平井部署区,钻井平台与靶前距定水平井A靶部署区,水平段长度、钻井难度及钻井投资定水平井B靶及水平段井轨迹。结果表明:渤南洼陷“济阳”夹层型页岩油夹层大孔隙相对发育,可动流体饱和度高,且压裂可改造性好;高频夹层发育区通过压裂可获得更复杂的压裂裂缝网络,沟通更多的夹层,产能高;通过平面动态A靶框及纵向水平段轨迹控制窗的设计方法,大大降低了钻井施工难度,缩短了钻井周期,大幅改善了页岩油开发的经济性。To establish a geology-engineering integrated evaluation method and horizontal well integrated design method of interlayer shale oil in continental graben basin,we conducted geological engineering integration research on the"Jiyang"interlayer shale oil in Bonan sag,using the methods of geological comprehensive analysis and data statistical analysis.We compared the typical characteristics of shale oil in Jiyang depression with other shale oils in China and proposed the concept of"Jiyang"shale oil.By studying the interlayer,structure,in-situ stress,physical properties,geochemical parameters,natural fractures and fracturing transformation characteristics of"Jiyang"interlayer shale oil in Bonan sag,a geology-engineering integrated dessert evaluation method is establishedthat integrates interlayer,natural fracture and fracturing modification.This method involves determining the scheme deployment area based on geological engineering dessert,fault characteristics,horizontal section length,determining the scheme deployment area by using the ground well platform and fracture direction of hydraulic fracturing,determining the A target deployment of horizontal well by using the ground well platform and distance before target,and determining the B target of horizontal well and well trajectory of horizontal section by using horizontal section length,drilling difficulty and drilling investment.Eight horizontal wells were deployed.The results show that interlayer has relatively developed macropores,high mobile fluid saturation,and good fracturing reconstructibility.The high-frequency interlayer development area can obtain a more complex fracturing fracture network through fracturing,communicate more interlayer,and have high productivity.By using the design method of plane dynamic A-target frame and longitudinal horizontal section trajectory control window,the difficulty of drilling construction is greatly reduced,the drilling cycle is shortened,and the economy of shale oil development is significantly improved.

关 键 词：甜点评价 页岩油 一体化设计 水平井 渤南洼陷 

分 类 号：TE55[石油与天然气工程—油气田开发工程]