CAJ | 학술논문

岩性识别一直是储层评价的重要工作之一，是求解储层参数的基础。由于M凹陷芦草沟组受多期不同类型的构造、沉积、成岩作用，导致岩性复杂多样。简单地应用交会图版，容易忽略多个测井参数相互间潜在信息，存在着多解性和不确定性。综合应用多种测井数据，更快速、准确地获得岩性信息，成为测井解释方面迫切的需求。采用主成分分析的方法，综合多种测井变量，选取代表大部分测井信息的主成分变量，然后再采用交会图方法识别岩性，有效地识别M凹陷致密油储层复杂岩性，为下一步致密油“七性”研究奠定了基础。
암성식별일직시저층평개적중요공작지일，시구해저층삼수적기출。유우M요함호초구조수다기불동류형적구조、침적、성암작용，도치암성복잡다양。간단지응용교회도판，용역홀략다개측정삼수상호간잠재신식，존재착다해성화불학정성。종합응용다충측정수거，경쾌속、준학지획득암성신식，성위측정해석방면박절적수구。채용주성분분석적방법，종합다충측정변량，선취대표대부분측정신식적주성분변량，연후재채용교회도방법식별암성，유효지식별M요함치밀유저층복잡암성，위하일보치밀유“칠성”연구전정료기출。
Lithologic identification is an important basis for reservoir evaluation and reservoir parameters solution. Due to different structure types, deposition and diagenesis of multiple phases, lithology is complex in Lucaogou formation of M sag. The simply ap-plication of cross plot may overlook some messages among log parameters, causing multiple solutions and uncertainties. Integrated applying many logging data and acquiring lithologic information more quickly and accurately become insistent demands of log inter-pretation. This paper adopted principal component analysis, combined a variety of logging variables, and selected principal compo-nent variables which represented most logging information. Afterwards, the adoption of cross plot effectively identified complex li-thology of dense oil reservoir in M sag, thereby providing basis for the next seven properties research of tight oil.