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Coal‐derived Gas Accumulation Characteristics and Exploration Prospects of Upper Paleozoic in Eastern Linqing Depression
Author(s) -
LIANG Zhao,
ZHOU Yaoqi,
LIU Chengang,
WANG Rui
Publication year - 2015
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 - 10.1111/1755-6724.12307_18
Subject(s) - paleozoic , coal , depression (economics) , geology , earth science , paleontology , economics , geography , keynesian economics , archaeology
Bohai Bay Basin is the highest oil production basin in China, but the proven reserves and production of natural gas is far less than the size of the oil. In recent years, petroleum geologists found one after another in Wenan Slope of Jizhong Depression, Kongxi and Wumaying buried hills of Huanghua Depression, Gubei-Bonan buried hill of Jiyang Depression, Wenliu buried hill of Dongpu Depression oil and gas from coal-bearing source rock of Upper Paleozoic. It shows that Upper Paleozoic of Bohai Bay Basin has good exploration prospects. It has been low level of exploration in Eastern Linqing Depression. It has coal-derived gas show only in Well Degu 2 and Kanggu 4 in a long period. During the exploration in 2007, petroleum geologists found industrial oil and gas flow in Well Gaogu 4, which produced natural gas 2.1×10m/d, oil 30.18t/d coal-bearing source rock of Upper Paleozoic (Fig.1) after reservoir fracturing, proving Eastern Linqing Depression to be another potential area of coal-derived gas exploration. However, the types of buried-history of the secondary structural belts were different because Eastern Linqing Depression experienced superposition of tectonic movements since Early Palaeozoic, resulting in different hydrocarbon generation and accumulation evolutions in different areas. This article mainly describes the reservoirforming conditions and the potential of hydrocarbon LIANG Zhao, ZHOU Yaoqi, LIU Chengang and WANG Rui, 2015. Coal-derived Gas Accumulation Characteristics and Exploration Prospects of Upper Paleozoic in Eastern Linqing Depression. Acta Geologica Sinica (English Edition), 89(supp.): 448-449.