基于测井曲线分析的沉积事件精准识别  

Precise identification of sedimentary events based on logging curve analysis

作　　者：王立新[1] 唐明远[1] 李浩[2] 周贤斌 黄学斌[2] 刘双莲 赵睿[5] 张辉[6] 申本科[2] 苏映宏[2] WANG Lixin;TANG Mingyuan;LI Hao;ZHOU Xianbin;HUANG Xuebin;LIU Shuanglian;ZHAO Rui;ZHANG Hui;SHEN Benke;SU Yinghong(Sinopec North China E&P Company,Zhengzhou,Henan 450006,China;Sinopec Exploration&Production Research Institute,Beijing 102206,China;Sinopec Jingwei Huabei Measurement and Control Company,Nanyang,Henan 473132,China;Sinopec Petroleum Engineering Technology Research Institute,Beijing 102206,China;Exploration and Development Research Institute,PetroChina Xinjiang Oilfield Company,Karamay,Xinjiang 834000,China;Exploration and Development Research Institute,Sinopec Henan Oilfield Company,Nanyang,Henan 473132,China)

机构地区：[1]中国石化华北油气分公司 [2]中国石化石油勘探开发研究院 [3]石化经纬华北测控公司 [4]中国石化石油工程技术研究院 [5]中国石油新疆油田公司勘探开发研究院 [6]中国石化河南油田分公司勘探开发研究院

出　　处：《天然气工业》2022年第11期50-57,共8页Natural Gas Industry

基　　金：中国石油化工股份有限公司研究项目“川西须三段流体识别评价及储层预测研究”(编号:P20061-2)。

摘　　要：沉积事件在油气生成演化过程中具有重要作用,沉积事件的测井精准识别对精细指导地质分层及准确划分地质单元具有重要意义,但相关报道的文献较少。为此,应用2种方法研究沉积事件,首先通过岩心、薄片及地震资料对测井曲线的精细刻度与标定,获得系统沉积事件的地质专属特征,为识别复杂沉积事件提供准确依据;其次通过沉积旋回、沉积物质等的突变及其成因关系的归因研究,获得复杂沉积事件的识别依据。研究结果表明:①岩心、薄片及地震资料不仅有助于标定测井曲线上的沉积事件,而且可以与测井曲线构成识别沉积事件的可信证据链;②沉积旋回的突变或反转与地层层序演化有关,这种突变关系有助于确认层序界面;③沉积旋回的节奏变化与储层岩石结构和孔渗结构密切相关,对于准确预测和评价储层性质有帮助;④沉积旋回及其节奏变化的研究有助于判断和识别沉积事件的性质和特点;⑤地质内因深刻地影响了地震信息与测井信息的联动响应规律,事件与沉积物的隐性变化关系在油气地质研究中有着潜在的广阔应用领域。结论认为,该研究成果有效地解决了碳酸盐岩“同期异相”的地层对比难题,并有力支撑了四川盆地普光气田的地层单元划分及含气面积的确定,为气田的高效开发提供了技术支撑。Sedimentary events play an important role in the process of oil and gas generation and evolution,and its accurate identification based on logging is of great significance in guiding geological stratification precisely and dividing geological units accurately,but there are few related literatures.In this paper,two methods are adopted to research sedimentary events.Firstly,the exclusive geological characteristics of system sedimentary events are figured out by scaling and calibrating logging curves based on core,thin section and seismic data,so as to provide an accurate basis for the identification of complex sedimentary events.Then,the identification basis of complex sedimentary events is obtained by performing attribute research on the mutation and genetic relationship of sedimentary cycles and sedimentary materials.And the following research results are obtained.First,core,thin section and seismic data are not only conducive to calibrating the sedimentary events in the logging curves,but also to constituting the credible evidence chain together with logging curves to identify sedimentary events.Second,the abrupt change or reversal of sedimentary cycle is often related to the evolution of stratigraphic sequence,and this abrupt change is often helpful in identifying the sequence boundary.Third,the rhythm change of sedimentary cycle is closely related to reservoir rock structure and poroperm structure,which is helpful for accurate prediction and evaluation of reservoir properties.Fourth,the researches on sedimentary cycle and its rhythm change are helpful in judging and identifying the properties and characteristics of sedimentary events.Fifth,the linkage response laws of seismic information and logging information are influenced greatly by internal geological factors,and the recessive change relationship between events and sediments has a potential wide application field in the study of oil and gas geology.In conclusion,the research results effectively solve the difficulties in the stratigraphic correlation of car

关 键 词：沉积事件 测井曲线 地层厚度 沉积旋回 岩石类型 

分 类 号：P631.81[天文地球—地质矿产勘探] P618.13[天文地球—地质学]