对海上找气的思考  

PONDERING UPON OFFSHORE GAS EXPLORATION IN CHINA

作　　者：陈斯忠 宋建民 陈伟煌 

机构地区：[1]中国海洋石油东部公司,广州,510240 [2]中海石油研究中心东海研究所,上海,200030 [3]中海石油研究中心西部研究院,广东湛江,524057

出　　处：《中国海上油气（地质）》2003年第3期153-159,共7页China Offshore Oil and Gas(Geology)

摘　　要：对中国近海近年来的天然气勘探实践进行了总结,并与陆上天然气勘探实践作了比较,指出"油气并举,向气倾斜"的勘探方针是正确的,但需要加大天然气成藏研究和勘探实践的力度.含气盆地(凹陷)成气条件的比较性评价是寻找天然气勘探方向和进行天然气勘探决策的地质依据.在中国近海5个含气盆地(凹陷)中,珠江口盆地白云凹陷和琼东南盆地天然气远景最好,其次是莺歌海盆地和东海盆地西湖凹陷,再次是东海盆地丽水凹陷.尽管琼东南盆地天然气勘探在4个方向上的探索均未取得大的突破,但却从失利中明确了下一步找气的方向.由崖城凸起、陵水低凸起和松涛凸起及其周围组成的北部隆起带以及位于南部深水区的南部隆起带是找气的有利地带.Based on a comparison of offshore gas exploration in recent years with onshore exploration in China, it is clear that the strategy of “exploring for oil and gas simultaneously and putting emphasis on gas” is right, but both the study of gas accumulation and the exploration activities should be strengthened. The comparative evaluation of gas accumulation conditions among various gas_bearing basins (sags) may provide geological evidences for finding exploration targets and making an exploration decision. For the five gas_bearing basins (sags) offshore China, Baiyun sag in Pearl River Mouth basin and Qiongdongnan basin are considered to be the best areas for gas exploration, and Yinggehai basin and Xihu sag of East China Sea the better ones, with Lishui sag of East China Sea last one. Although the gas explorations in four directions in Qiongdongnan basin have failed, the next exploration targets are determined from these failures. The favorable areas for future gas exploration in the basin are the northern uplift belt composed of Yacheng arch, Lingshui low arch, Songtao arch and their surrounding areas, and the southern uplift belt in deep_water area.

关 键 词：海上油气勘探 中国近海 含气盆地 成气条件 找气方向 

分 类 号：P618.13[天文地球—矿床学] TE13[天文地球—地质学]