泌阳凹陷B 453探井压裂试油结果与解释结论矛盾的分析与启示  

Analysis and enlightenment of the contradiction between fracturing test results and interpretation conclusions of B 453 exploration well in Biyang Sag

作　　者：方锡贤 狄海公 杨凡 FANG Xixian;DI Haigong;YANG Fan(North China Mud Logging Branch of Sinopec Matrix Corporation,Nanyang,Henan 473132,China;Petroleum Engineering Technology Research Institute of Sinopec Henan Oilfield Branch,Nanyang,Henan 473132,China;Postdoctoral Workstation of Zhong′an United Investment Corporation,Beijing 102611,China)

机构地区：[1]中石化经纬有限公司华北录井分公司,河南省南阳市473132 [2]中石化河南油田分公司石油工程技术研究院 [3]中安联合投资集团有限公司博士后工作站

出　　处：《录井工程》2022年第1期11-17,共7页Mud Logging Engineering

摘　　要：依据录井、测井、压裂试油资料对B 453井油气产出层位、岩性等进行简单分析,判断出B 453井产出油气为远井眼砂岩储层储集油气通过压裂改造形成的渗流通道运移而来,而非近井眼地层储集油气。提出油气产出层位不同,原油产自Ⅶ油组“普通黑油油藏”、天然气产自Ⅷ油组“凝析气藏”的观点;结合钻探成果判断泌阳凹陷东部深层砂砾岩体能够形成致密油气藏。认为砂岩厚度较厚、物性相对较好、微幅度鼻状构造发育区块是勘探有利目标区块,GR曲线“低值非齿化箱型”井段、气测录井异常明显井段是压裂改造有利层段。针对B 453井对没有油气显示层段压裂改造后获得工业油流的实际,提出了对录井没有显示、测井解释或常规试油为“干层”的储层进行成藏圈闭条件论证及纵横向类比分析,优选层位进行压裂改造的建议。Simply analyze hydrocarbon production horizons and lithology in well B 453 based on mud logging,well logging and fracturing oil test data,and it is showed that the oil and gas produced by well B 453 is the migration of hydrocarbon in far-hole sandstone reservoir through the seepage channel formed by fracturing instead of near-hole formation.It is proposed that hydrocarbon production layers are different,the crude oil is produced from groupⅦ,the ordinary black oill reservoir,and the natural gas is produced from the groupⅧ,the condensate gas reservoir.Combined with drilling results,it is judged that the deep glutenite bodies in the eastern Biyang Sag can form tight oil and gas reservoirs.Favorable target block is considered to be the block with thick sandstone thickness,relatively good physical properties and slight amplitude nose structure developed,and favorable intervals for fracturing are sections with low-value non-serrated box GR curve and with obvious gas logging anomalies.According to the fact that industrial oil flow obtained after fracturing intervals without hydrocarbon show in well B 453,it is proposed to carry out demonstration on accumulation trap condition and vertical-horizontal analogy analysis for reservoirs with no mud logging show,well logging interpretation or conventional oil test as dry layers,and to optimize formation for fracturing.

关 键 词：砂砾岩体 油气层分析 压裂改造 泌阳凹陷 黑油油藏 凝析气藏 

分 类 号：TE132.1[石油与天然气工程—油气勘探]