The Quantitative Structural Model of Dushanzi Anticline in Southern Margin of Junggar Basin and its Insights for Petroleum Exploration
Wang, Yanjun 1
(1)North-West Geology Institute, PetroChina,
Lanzhou, China.
Using prestack
depth
migration
seismic reflection profiles and
surface geological investigations, we constructed the initial structure model
of the Dushanzi anticline. Comparing synthetized seismic profiles acquired by
wave equation forwarding modeling with ordinary seismic profiles, we can
determine the forelimb dip and the configuration of the Dushanzi anticline.
Based on the fault-related theory, we interpreted that the main fault of this
trishear fault-propagation fold. Constrained by the principle of the balanced
coress section technology, we use the numerical simulation to analysis the
quantitative kinematics of the master fault and determine the fault geometric
characteristics of the Dushanzi anticline (fault dip, fault truncations, fault
shape, etc.). Finally, we constructed the quantitative model of Dushanzi
anticline: Dushanzi anticline is located on the hanging wall of the Dushanzi
fault with 43 ° dip; the K1tg-N1s layers are dispaced with the detachment layer
located on the K1tg layer. The lower-middle formations of the Dushanzi
anticline has better reservoir prospecting, which is also the further
reasonable exploration target.
AAPG Search and Discovery Article #90135©2011 AAPG International Conference and Exhibition, Milan, Italy, 23-26 October 2011.