Seals or Flow
Conduits?
How Faults Control Migration and Accumulation in the Shengli
Lampe, Carolyn1, Guoqi Song2,
Liangzi Cong3 (1) Integrated Exploration Systems, 52072 Aachen,
Germany (2) SINOPEC (Shengli Oilfield), Dongying, China (3) K.A. Keeping
Advanced Oiltech Ltd, Beijing, China
Shengli oilfield, the second largest oil
and gas field in
Three major source rocks near the Shengli
oilfield contribute petroleum to up to seven reservoir horizons. In addition,
the source rock and reservoir rock facies are distributed unevenly throughout
the system, resulting in complex distributions of possible migration pathways
and traps. Some migration pathways consist of stratigraphic conduits, including
sandy and conglomeratic facies that occur in the northern graben flank area.
However, faults that became active at different times throughout the basin
evolution represent the most common conduits for hydrocarbon migration.
Although the sealing or conductive
properties of faults for hydrocarbons and the timing of migration are poorly
understood, this information is critical to understand the distribution of
hydrocarbons within the basin. The Shengli oilfield provides an excellent
example of how 3D petroleum systems modeling allows
assessment of fault behavior and timing to predict the distribution of
hydrocarbons in a petroleum system.
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California