TITLE:
Study on Development Law of Complex Fluvial Reservoir under Water
AUTHORS:
Shaopeng Wang, Yuan Lei, Jie Tan, Pengfei Mu, Guangyi Sun
KEYWORDS:
The Bohai Sea, Complex Fluvial Facies, Water Body, Development Law
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.8,
August
25,
2022
ABSTRACT: The Bozhong oilfield (Hereinafter referred to as BZ oilfield) is a typical representative of complex fluvial reservoirs in the
Bohai Sea, located in the southern Bohai Sea, with an average porosity
of 30.3% and an average permeability of 643 × 10-3 μm2, belonging to medium high porosity and permeability reservoir, the
reservoir has good connectivity, and the average underground crude oil
viscosity is 5 mPa·s. There are many plane fault blocks, and the longitudinal oil well
section is long, so the oil-water relationship is very complex. With the further development of the oilfield, the
vertical and horizontal oil-water movement law, residual oil
distribution and potential are unclear, resulting in rapid bottom water coning,
unbalanced injection and production in the oilfield,
and increasingly prominent contradictions among layers, planes and layers in the oilfield. Through numerical simulation analysis and comparison of
displacement law and recovery degree under different influence conditions, this
paper studies the development effect of actual sand body under different
influence conditions such as different well types, different development
methods and well layout positions, and takes appropriate development methods
for the oilfield, which is of great significance to improve the development
effect of the oilfield.