摘要
准噶尔盆地腹部和南缘普遍发育异常高压,但由于沉积及构造背景的差异,其成因也不尽相同,其中腹部以成岩作用和烃类生成作用为主控因素,南缘则以欠压实作用和构造抬升作用为主。区域地质构造控制了盆地的地温,而岩石物性、火山活动、断裂作用等仅对局部地温分布有着重要的影响。通过分析盆地温压场特征,认为异常温压抑制了有机质的热演化,在很大程度上控制着油气成藏与分布。
Although abnormal high pressure is widely developed in the center and the south of Junggar basin,the forming mechanisms are different due to the discrepancies in sedimentation and tectonics.In the central part,diagenesis and hydrocarbon generation are the key controlling factors.Correspondingly,the main influence elements in the south are under compaction and tectonic uplift.In addition,regional structure controls the distribution of temperature,but lithology,volcanic activity,rifting and suchlike only have important effect on local distribution of temperature.Accord-ing to the analysis of pressure and temperature fields,it was shown that anomalous temperature and pressure restrain the thermal evolution of organic matters and control the forming and distribution of hydrocarbon.
出处
《新疆石油地质》
CAS
CSCD
2002年第5期380-381,共2页
Xinjiang Petroleum Geology
关键词
准噶尔盆地
异常压力
压力系数
温度分布
油气成藏
质量构造
Junggar basin
abnormal pressure
pressure coefficient
temperature distribution
reservoir formation
