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An Analysis of Cenozoic Petroleum Structural Mineralization in Kunbei Oil‐Gas Pool, Southwestern Qaidam Basin, China
Author(s) -
Baofeng LÜ,
CAI Zhourong,
YIN Zhengxin,
WANG Xue
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12385_26
Subject(s) - china , christian ministry , petroleum , structural basin , geography , oceanography , geology , archaeology , political science , geomorphology , paleontology , law
The Qaidam basin is a plateau basin inside the Tibetan plateau with very rich oil-gas resources. It has had a history of some forty years of exploration and geological research (Fu Suotang, et al., 2013; Chen Shijia, et al., 2012), despite the production of oil and gas inside the basin and extensive exploration since the late 1980s, but the proven rate is very low because of the complex accumulation conditions. For quite a long period the main exploration objectives were in the Cenozoic sedimentary sub-sag, and less attention has been paid to the thrust structure belt of basin margin, Recently, the discovery of a large oil-gas pool termed the Kunbei oil-gas pools made a great breakthrough in Qinghai oil field, this large oil-gas pool located in the Kunbei thrust structure belt of southwest margin of Qaidam basin, and characteristiced by shallow buried, big storage and high single well production, buried hill, anticline, fault block, structure-lithology and other types oil and gas reservoirs have been found. Preliminary studies results made it clear that the oil-gas pools formed with the collocation of long distance stepwise migration, continue filling and dynamic accumulation, it presents absolutely as a new special type of petroleum structural mineralization in China. However, there have not been reports or publications discussing the formation of oil-gas accumulation and the process of petroleum system crossing and superimposing. The purpose of this paper is to present the characteristics and formation mechanism of this oil-gas pool using an integrated geological, geophysical and geochemical approach based on data from relatively recently published papers and current research. 2 Structural Mineralization model