渤海油田新近系地层剖面智能化建立方法及应用  

Intelligence establishment method of Neogene stratigraphic profiles in Bohai Oilfield and its application

作　　者：李战奎 张恒 张学斌 温海涛 刘广明 LI Zhankui;ZHANG Heng;ZHANG Xuebin;WEN Haitao;LIU Guangming(Engineering Technology Branch of CNOOC Ener Tech-Drilling&Production Co.,Tianjin 300459,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司

出　　处：《录井工程》2024年第1期22-26,共5页Mud Logging Engineering

摘　　要：随着钻井作业优快发展,新近系浅层探井钻井作业周期大幅缩短,导致砂泥岩难区分,岩性分层不准确,录井剖面符合率低。为解决这项难题,实现新近系地层岩性剖面的准确构建,提出基于钻压、扭矩、钻时的组合参数SI指数与扭矩曲线交会方法实时构建录井剖面,使录井剖面绘制可以随钻实时进行,做到了录井剖面绘制及时、高效,实现了精细化岩性分层。该方法在渤海油田应用超100口井,地质录井剖面符合率提升15%~23%,为智能化录井奠定了基础。With the optimum and fast development of drilling operations,the drilling cycle of shallow exploration wells in the Neogene is greatly shortened,resulting in difficulty to distinguish sandstone and mudstone,inaccurate lithology stratification and low coincidence rate of mud logging profiles.To solve this problem and achieve accurate construction of lithological profiles in the Neogene strata,the method of curve crossplot of SI index(the combined parameter of bit weight,torque and drilling time)and torque is proposed to construct mud logging profiles in real time,so that the real⁃time drawing of mud logging profiles can be carried out while drilling,achieving timely and efficient drawing of mud logging profiles and achieving fine lithologic layering.This method has been applied to more than 100 wells in Bohai Oilfield,and the coincidence rate of geological logging profiles has been increased by 15%⁃23%,laying a foundation for intelligent mud logging.

关 键 词：新近系 智能化 地层剖面 SI指数 符合率 岩性识别 

分 类 号：TE132.1[石油与天然气工程—油气勘探]