CAJ | 학술논문

为了研究鄂尔多斯盆地西缘羊虎沟组页岩气成藏潜力，根据泥页岩厚度、有机质类型、有机质丰度与成熟度等因素，从暗色泥页岩地层空间展布特征、构造特征与热事件、生烃能力等方面分析页岩气聚集的地质条件。研究表明，羊虎沟组暗色泥页岩单层最大厚度约30m，区内发育的逆冲推覆构造使地层叠置形成厚的泥页岩层段，泥页岩干酪根以III型为主，II-I型也有发育，TOC平均值为3.25%，R0为1%～4%，这些条件均有利于页岩气聚集成藏。综合分析认为呼鲁斯太南部、乌达及石炭井地区为页岩气聚集最有利的区域。
위료연구악이다사분지서연양호구조혈암기성장잠력，근거니혈암후도、유궤질류형、유궤질봉도여성숙도등인소，종암색니혈암지층공간전포특정、구조특정여열사건、생경능력등방면분석혈암기취집적지질조건。연구표명，양호구조암색니혈암단층최대후도약30m，구내발육적역충추복구조사지층첩치형성후적니혈암층단，니혈암간락근이III형위주，II-I형야유발육，TOC평균치위3.25%，R0위1%～4%，저사조건균유리우혈암기취집성장。종합분석인위호로사태남부、오체급석탄정지구위혈암기취집최유리적구역。
To study the Yanghugou Formation Shale gas reservoiring potential on the western margin of Ordos Basin, mainly through fac-tors of argillutite thickness, organic matter type, organic matter abundance and maturity, analyzed geological conditions of shale gas ac-cumulation from aspects of spatial distribution and structural features of dark argillutite strata, thermal event and hydrocarbon generat-ing capacity etc. The study has shown that the maximum thickness of single dark argillutite stratum can be about 30m;the developed thrusting nappe structure in the area made strata superimposed into thick argillutite sectors;argillutite kerogen is mainly type III, also some type II-I, average TOC 3.25%, Ro 1%~4%, all of these conditions are favorable to reservoiring of shale gas. The comprehensive analysis has considered that the southern Hulstai, Wuda and Shitanjing areas are advantaged areas for shale gas accumulation.