摘要
轮南地区奥陶系的油气资源非常丰富，但油气的分布十分复杂。通过对该区奥陶系石油地质特征、油气成藏特征及油气藏形成机理的研究，认为该区黑油主要来自中－上奥陶统油源岩，天然气则来自寒武系烃源岩的高温裂解。油藏的成藏期是在中新世吉迪克组沉积晚期－康村组沉积早期，气藏的成藏期是在上新世库车组沉积期。原油沿奥陶系顶面的不整合面向北运移，天然气则沿桑塔木和轮南断垒两组背冲式大逆断裂向上运移，在有利的圈闭中成藏。指出油气运移的几条有利路线。
The Ordovician in Lunnan area is very rich in oil and gas resources and
complicated in oil/gas distribution. Based on the studies on geologic feature, oil/gas reservoir
characteristics and forming mechanism of oil/gas reservoir in Ordovician, it is considered that
the black oil is mainly derived from the source rock of Middle-Upper Ordovician, natural gas
from Cambrian source rock with high temperature cracking. Oil reservoir formed in late period of
Jidike formation-early period of Kangcun formation in Miocene, and gas reservoir formed in
period of Kuqa formation Pliocene. Crude oil migrated northward along the unconformity in top
surface of Ordovician and formed oil reservoir in favorable trap, natural gas migrated upward
along two rows of reversed faults of Sangtamu and Lunnan fault horst. It is pointed out that
several advantageous routes of hydrocarbon migration are the direction for oil and gas
exploration in the future.
出处
《新疆石油地质》
CAS
CSCD
1999年第3期210-212,共3页
Xinjiang Petroleum Geology
关键词
轮南油
油气藏形成
油气运移
油气藏探
Lunnan oilfield Ordovician Sourcereservoircaprock
assemblage Oil and gas reservoir formation Oil and gas migration Direction Oil and gas
exploration
