TITLE:
Study on the Fine Configuration of Reservoir in River Facies Oilfield in Bohai Sea Area
AUTHORS:
Jianmin Zhang, Xijie Wang, Pengfei Mu, Shicong Lyu, Jun Xie
KEYWORDS:
Shallow Water Delta, Reservoir Configuration, Seismic Facies, Single Channel, Dominant Channel
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.14 No.2,
February
27,
2024
ABSTRACT: The
geological conditions of offshore shallow water delta oil reservoirs were
complex, with limited well data and large well spacing. Taking A Oilfield in
the Bohai Sea Area, China as an example, the target sand body was formed in a
shallow water delta sedimentary environment, with well-developed underwater
distributary channels and frequent branching and diversion. The reservoir was
strong non-uniformity and uneven plane water cut pressure. To this end, based
on the existing work of predecessors, combined with seismic, logging, and
production dynamics data, and based on the genesis mechanism of shallow water
delta reservoirs, the boundary of composite river channels was identified
through seismic facies, and logging facies were used to subdivide them into
single river levels within the composite river channels. Then, seismic waveform
characteristics were applied to track and characterize the plane distribution
of single river channels, guiding the efficient development of offshore shallow
water delta oil fields and achieving increased storage and production in Bohai
Oilfield, China.