摘要
近年来，准噶尔盆地天然气勘探取得了重大突破，连续在南缘、东部、西北缘发现较大规模的气藏，预示着天然气勘探的巨大潜力。在回顾和总结这些勘探成果的基础上，研究和探讨了盆地天然气分布和富集的宏观地质规律：（１）大中型气田在平面分布上有特定的地域；（２）天然气分布明显受含气体系的控制（盆地具三大含气体系：北天山山前坳陷侏罗系控制下的以原生气藏为主的含气体系，五彩湾凹陷下石炭统滴水泉组气源控制下的以石炭系火山岩原生气藏为主的含气体系及西北缘环中拐隆起下二叠统佳木河组气源控制下的以二叠系原生气藏为主的含气体系）；（３）腐殖型母质和高演化区是天然气形成和富集的主要因素；（４）有效的气源层与优良区域盖层的良好配置是形成大中型气田的重要条件；（５）盆地深层是孕育大中型气田的主要场所。在此认识基础上，展望了盆地天然气的勘探前景，提出了主要钻探区域，并就今后天然气勘探提出几点建议。
In recent years, major breakthroughs were made for natural gas exploration in Junggar basin, larger scale of gas reservoirs were successively found in south margin, east part and northwest margin, indicating the enormous potential for natural gas exploration. Based on these results, this paper studied and discussed the macro regularity of distribution and enrichment of natural gas in Junggar basin, pointing out that ① large and medium scale of gas fields are distributed in special area in plane; ② distribution of natural gas is obviously controlled by gasbearing sytem; ③ humus and high mature area are major factors for controlling formation and enrichment of gas; ④ better assemblages of effective gas source and best regional caprock are important conditions for finding large and medium scale of gas fields; ⑤ deeper part in Junggar basin is major place for forming these gas fields. Additionally, primary exploration areas are suggested, several proposals for gas exploration in future are presented.
出处
《新疆石油地质》
CAS
CSCD
1998年第2期132-136,共5页
Xinjiang Petroleum Geology
关键词
准噶尔盆地
天然气
气田
地质因素
勘探前景
Junggar basin Natural gas Gas field Distribution Exploration region
