姬塬地区延长组下组合油层、水层气测解释评价方法  

Gas logging interpretation and evaluation method for oil layers and water layers of lower Yanchang formation in Jiyuan area

作　　者：王春辉 郭明科 田野 孟繁涛 杜鹏 贾学东 唐莉 冯正兵 王盈 

机构地区：[1]中国石油长城钻探工程有限公司录井公司 [2]中国石油渤海钻探第一录井公司

出　　处：《录井工程》2015年第4期51-56,95,共6页Mud Logging Engineering

基　　金：中国石油天然气集团公司重大专项"随钻电磁波成像与测录井解释支持系统研发"(编号:2013E-38-09)

摘　　要：姬塬地区是长庆油田的一个重要产区,主要生产层位是延长组的长3、长4+5、长6段,随着勘探的不断深入,延长组下组合(长7、长8、长9段)的勘探逐渐得到重视。从该地区延长组下组合储集层原油伴生气和气测烃组分的特征分析入手,通过多口井众多油层与水层气测录井总烃、烃组分以及派生参数及其曲线特征的研究与分析,形成了以反映重组分的派生参数曲线(W_h、B_(H-L)、B_(H-M))与反映轻组分的派生参数曲线(B_h、B_(L-H)、B_(L-M))变化趋势特征和烃组分C_3与C_2含量大小比较为主、以总烃峰基比和烃组分展布形态为辅的油层与水层解释方法,解决了延长组下组合储集层解释评价难的问题。2014年的应用表明,解释符合率为75.5%,较2011-2013年67.3%的解释符合率有显著提高。Jiyuan area is an important production area in Changqing Oilfield,the main production horizons are Chang3,Chang 4+5,Chang6 in Yanchang formation.With the deepening exploration,the lower Yanchang formation(Chang 7,Chang 8 and Chang 9) has been emphasized.Starting with the analyzed characteristics of reservoir crude oil associated gas and hydrocarbon components of gas logging of lower Yanchang formation in this area and through researches and analysis for gas logging total hydrocarbons,the hydrocarbon components,derived parameters and its curve features for various oil and water layers in a number of wells,the authors formed the oil and water layer interpretation method which gives priority to the varying trend characteristics in derived parametric curves of reflecting the heavy components(W_h,B_(HL),B_(HM)),the derived parametric curves of reflecting light components(B_h,B_(LH),B_(LM)) and the content size comparison for hydrocarbon components C_2 and C_3,gives supplement to the ratio between total hydrocarbon peak and base,and the distribution form of hydrocarbon components,solved the problem of difficult interpretation and evaluation in lower Yanchang formation was solved.The practical application in 2014 indicated that the interpretation consistent was 75.5%,compared with 67.3% in 2011-2013,the coincidence rate of interpretation was improved significantly.

关 键 词：解释评价 延长组 下组合 派生参数 曲线特征 总烃 烃组分 BH-L BH-M 

分 类 号：TE132.1[石油与天然气工程—油气勘探]