  The Chang 2 bottom water reservoir area in the western part of northern
Shaanxi is one of the core oil-producing areas in the Ordos Basin.One of the
main reservoirs is the Chang 2 reservoir of the Triassic Yanchang Formation,
which has good physical conditions, active edge and bottom water, and high
geothermal gradient. In this paper, the reservoir numerical simulation software
CMG is used to simulate the water intake and heat recovery in the target study
area, and the heat recovery rate and heat recovery of the three water
production methods of direct water production, four injection and one
production and one injection and four production under different injection
pressures are analyzed. The results show that it is difficult to realize the
direct water extraction from the bottom water reservoir. The annual heat
recovery of single well of four injection and one production and one injection
and four production is converted to the standard coal production between 190 ~
420 t, so the Chang 2 reservoir in the western part of northern Shaanxi has the
potential of water injection and heat recovery.
