对称法在卡层取心中的应用  

The application of antithesis method in the core of card layer

作　　者：周龙 韩旭治 闫琪 李瑜 徐景林 奥宁 Zhou Long;Han Xuzhi;Yan Qi;Li Yu;Xu Jinglin;Ao Ning(Yanchang Gas Field Quality Supervision Center,Shanxi Yan'an 716000)

机构地区：[1]延长气田质量监督中心,陕西延安716000

出　　处：《石化技术》2022年第11期111-112,52,共3页Petrochemical Industry Technology

摘　　要：卡层取心在录井中被广泛的应用,它有着重要的作用。它可以确定地层岩性、储集层物性、局部层段含油性、生油指标、接触界面、断层、油水过渡带等。通过技术人员对卡层取心获得地层岩样,可以分析地层渗透率、孔隙度以及其它岩石物性等参数,获得地层的直接资料,为地质分析做基础。本文阐述了卡层取心的过程和方法,通过实例分析来说明其重要性。卡层取心是现场地质录井工作的重点和难点。一次卡准取心层位不仅可以减少不必要的钻井风险,还节约投资额度,缩短钻井周期,准确获取目的层岩心更有利于及时了解地层岩性、含油气性、物性等多方面的信息。准确卡层取心是建立在对区域及邻井资料深入了解的基础上,即详细了解地层划分原则及依据,掌握沉积相、沉积旋回的变化规律,运用已钻地层所反映的地层信息(钻时、岩性、气测及钻井液性能变化等),结合冲孔手段以及区域物探、钻井资料等,采用多种对比方法,达到卡准取心层位的目的。Stuck layer coring is widely used in logging,which plays an important role.It can be used to determine formation lithology,reservoir physical properties,local oil content,oil generation index,contact interface,fault,oil-water transition zone,etc.Through the technical personnel to get the stratum rock sample,the stratum permeability,porosity and other petrophysical properties and other parameters can be analyzed,the formation of the direct data,for geological analysis as the foundation.This paper expounds the process and method of carding,and illustrates its importance through case analysis.Caked layer coring is the key and difficult point of field geological logging.Once coring can not only reduce unnecessary drilling risks,save investment amount,shorten drilling cycle,Accurate acquisition of target layer core,is more conducive to timely understanding of formation lithology,oil and gas properties,physical properties and other information.Accurate caked coring is based on in-depth understanding of regional and adjacent well data,that is,detailed understanding of stratigraphic division principles and variation rules of sedimentary facies and sedimentary cycles according to,using formation information reflected by drilled strata(Drilling time,lithology,gas measurement and drilling fluid properties change,etc.),combined with punching methods,regional geophysical survey and drilling data,a variety of comparison methods,are used to achieve the purpose of coring.

关 键 词：卡层取心 对称法 应用 

分 类 号：TE142[石油与天然气工程—油气勘探]