Open AccessAnalysis on the Control of Faults on the Formation of P-1 Reservoir in Syncline Area of X Oilfield
Author(s) -
Qing Li
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/769/3/032039
Subject(s) - syncline , anticline , geology , fault block , petrology , horst , hydrocarbon , fault (geology) , petroleum reservoir , petroleum engineering , mineralogy , geomorphology , paleontology , structural basin , chemistry , organic chemistry
Hydrocarbon occurrence in Putaohua Formation of Xujiaweizi Syncline area is largely controlled by three types of faults. The long-term faults were the conduit of hydrocarbon from source rock Q1 to Putaohua reservoir. These long-term faults could cause new accumulation and leakage of accumulated hydrocarbon simultaneously during their active time. The middle-term and short-term faults are the sealing faults to enforce the entrapment of hydrocarbon in the fault-block traps. The relationship of fault conduits with the related traps is the main controlling factor for the hydrocarbon distribution in the faulted blocks around the center of Xujiaweizi Syncline. This hypothesis can well explain why the central portion of the syncline is with poorer accumulation than the surrounding horst blocks in which the accumulation are rich in their anticline structure traps.