准噶尔盆地石西油田火成岩储层特征及其油气成藏规律研究  

RESERVOIR CHARACTERISTICS OF IGENOUS ROCK AND RESERVOIR-FORMING PRINCIPLES,SHIXI OILFIELD IN JUNGGAR BASIN

作　　者：张进铎 王兆峰[2] 赵建章 乔文龙[3] 赖江德 

机构地区：[1]中国石油东方地球物理公司研究院 [2]中国石油新疆油田公司勘探开发研究院 [3]新疆石油学院

出　　处：《天然气勘探与开发》2010年第1期1-6,24,共7页Natural Gas Exploration and Development

基　　金："十一五"国家科技支撑计划"火成岩油气藏形成条件及开发关键技术研究"(2006BAB03B04)

摘　　要：以石西地区地层钻遇最全、岩相连续性最好的石西1井、石西2井为基础,结合相邻井的单井资料,开展石西油田石炭系火成岩油气藏特征研究,研究内容主要集中在火成岩的岩石特征、物性特征及岩相特征等方面。石炭系火成岩自下而上发育基性-中基性、中性和中酸性三个不同的岩性段,属于一个完整的火山喷发旋回,不同的岩性段其储层特征不同;根据对目的层段火山活动产物和岩石特征的研究结果,将石西地区的火成岩岩相划分为爆发相和溢流相,以溢流相发育为主,且溢流相带为本区最为有利的油气聚集区域;通过对石西油田火成岩储层的综合研究,推断了火成岩储层的发育区,并预测了油气聚集区。Taking Shi 1 and Shi 2 wells with the most complete formation-drilled and the best continuous facies as the dominant aims, combining with single-well data from adjoining wells, we studied the reservoir characteristics of Carboniferous igneous rock in Shixi oilfield. This study involves petrology, physical property and lithofacies characteristics of igneous rock. It is found that three lithological intervals are developed upward in Carboniferous igneous rocks, containing basic to neural basic rock, neural rock, and neural acid rock. Moreover, these intervals belong to one whole volcanic eruption cycle and different intervals are featured by different reservoir characteristics. Based on a research on both volcanic event's product and petrological characteristics of objective interval, the igeneous rocks in Shixi area can be divided into explosive facies and overflow facies, and with the latter as the soul. In addition, overflow facies is the most favorable to hydrocarbon accumulation.

关 键 词：准噶尔盆地 石西油田 石炭系 火成岩储层 岩相 

分 类 号：P618.13[天文地球—矿床学]