摘要
方法经系统地质地球化学特征对比分析表明，孔西潜山奥陶系及中生界下白垩统的油气均来自古生界烃源岩。目的证明孔西潜山的原油性质与第三系原油性质完全不同。结果孔西潜山属印支－燕山早期形成并进一步为第三系深埋的挤压－逆冲性断块背斜构造；上、下古生界烃源岩成烃条件是其油气形成的基础，古高今低的挤压逆冲背科带和反转构造是寻找古生界原生油气藏的有利地区。结论孔西潜山原生油气藏的发现，是华北地区几十年来古生界油气勘探的突破，为今后进一步开展这一领域的油气勘探提供了重要的供鉴作用。
Method Through correlation and analysis of characteristics of geology and geochemistry, it is clear that hydrocarbon of both Ordovician system and lower Cretaceous of Mesozoic group in Kongxi buried hill came from hydrocarbon source rock of Palaeozoic group.Purpose Oil properties of Kongxi buried hill is totally different from that of tertiary. Result Kongxi buried hill formed in early Indosinian-Yanshan period, is a anticline structure of compressional thrust fault block which is deeply buried by tertiary; hydrocarbon forming conditions of hydrocarbon source rock of upper and lower Palaeozoic group are bases of forming oil and gas. The compressional thrust anticline belt which was high in ancient time and low today, and reversed structure are favourable areas for seeking primary reservoirs of Palaeozoic group. Conclusion The discovery of Kongxi primary reservoir was a breakthrough in north China since decades of hydrocarbon exploration for Palaeozoic group. It is a reference for further exploration in this area.
出处
《特种油气藏》
CAS
CSCD
1998年第1期1-5,9,共6页
Special Oil & Gas Reservoirs
关键词
古生界
烃源岩
原生油藏
二次成藏
油气藏形成
Palaeozoic erathem, hydrocarbon source rock, primary reservoir,thrust-compression, coal measure strata, secondary reservoir, Kongxi buried hill,Huanghua depression
