页岩油资源定量评价中关键参数的选取与校正——以松辽盆地北部青山口组为例  

Selection and Verification of Key Parameters in the Quantitative Evaluation of Shale Oil:A Case Study at the Qingshankou Formation,Northern Songliao Basin

作　　者：薛海涛[1] 田善思[1] 卢双舫[1] 张文华[1,2] 杜添添 穆国栋[1,2] 

机构地区：[1]中国石油大学(华东),山东青岛266580 [2]东北石油大学,黑龙江大庆163318

出　　处：《矿物岩石地球化学通报》2015年第1期70-78,2,共9页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家重点基础研究发展计划(2014CB239005);国家科技重大专项(2011ZX05004-001-002);中央高校基本科研业务费专项(14CX05012A)

摘　　要：页岩油资源评价过程中,常用热解参数（S1）反映含油性。由于实验关系,所测得的S1存在轻烃、重烃的损失,为更准确的对页岩油资源进行定量评价,本文通过有机质成烃动力学研究以及对样品抽提前后的热解参数进行对比,对S1进行轻、重烃补偿校正,获得泥页岩总含油率参数,根据泥页岩排烃门限确定其可动油含量参数（S1/TOC）。研究结果表明,松辽盆地北部青山口组泥页岩S1校正前后相差2-3倍,排烃门限对应的S1/TOC=75mg/g TOC,结合黏土矿物含量（表征可压裂性）,优选出页岩油勘探开发有利区：青一段有利区主要集中在齐家古龙凹陷中北部及龙虎泡大安阶地中部,青二、三段集中在龙虎泡大安阶地中部与齐家古龙凹陷中南部。Pyrolysis parameter,S1,is a key parameter on behalf of oil content in the shale oil resource evaluation process.But contents of light hydrocarbons and heavy hydrocarbons in the measured S1 were under estimated because of the experimental process. In order to accurate evaluate shale oil resources,we conducted rock pyrolysis experiments on original and extracted samples of chloroform bitumen＂A＂,then compared their results to acquire the compensation factors of heavy hydrocarbons for S1 and to determine the compensation factors of light hydrocarbons of S1,by such we gained the oil content of shale,which we called the calibrated S1. Moreover,we determined the flowing amount of shale oil according to the hydrocarbon expulsion threshold. Results showed that the original S1 and the calibrated S1 are significantly different,and that the threshold is 75 mg/g TOC. The favorable area of exploration and development can be selected according to resource evaluations of shale oil and clay minerals. The favorable areas of qn1 should be concentrated in the central and northern Qijia-Gulong sag and the middle of the Longhupao-Daan terrace,while those of qn2 and qn3 should be mainly concentrated in the center and southern of the Longhupao-Daan terrace and the Qijia-Gulong sag.

关 键 词：页岩油 含油率 S1校正 可动量参数的选取 有利区 

分 类 号：P618.13[天文地球—矿床学]