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Numerical simulation of oil production with simultaneous ground subsidence

Conference · · Soc. Pet. Eng. AIME, Pap.; (United States)
OSTI ID:6987041
A 2-phase, 2-dimensional black oil simulator was developed for simulating reservoir production behavior with simultaneously occurring reservoir formation compaction and ground subsidence at the surface. The simulator was designed in particular for application to the Bolivar Coast fields of W. Venezuela, where extensive ground subsidence has been in evidence for many years. The flow equations were solved by both ADIP and SIP (Strongly Implicit Procedures). Reservoir compaction was described on the basis of the experimental data reported to date. The magnitude of areal subsidence at the surface was calculated using reservoir compaction, utilizing the recently developed theory of poro-elasticity. The model was employed for generating the reservoir formation profiles, as well as the ground subsidence bowls for a variety of conditions. It was found that the subsidence behavior strongly depends on the depth of burial. For example, with an increase in the depth, the reservoir bottom surface may actually uplift, while the top surface subsides. (21 refs.)
Research Organization:
Zulia Univ
OSTI ID:
6987041
Report Number(s):
CONF-7405135-
Conference Information:
Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Journal Volume: SPE-4847
Country of Publication:
United States
Language:
English