New Method of Well-Test Analysis in Naturally Fractured Reservoir Based on Elliptical Flow

2008 ◽  
Author(s):  
Alpheus Olorunwa Igbokoyi ◽  
Djebbar Tiab
Keyword(s):  
New Method ◽  
Fractured Reservoir ◽  
Well Test ◽  
Naturally Fractured Reservoir ◽  
Well Test Analysis ◽  
Test Analysis ◽  
Naturally Fractured ◽  
Elliptical Flow

Calibration of naturally fractured reservoir models using integrated well-test analysis – an illustration with field data from the Barents Sea

2021 ◽  
pp. petgeo2020-042
Author(s):  
D. Egya ◽  
P. W. M. Corbett ◽  
S. Geiger ◽  
J. P. Norgard ◽  
S. Hegndal-Andersen
Keyword(s):  
Field Data ◽  
Barents Sea ◽  
Fractured Reservoirs ◽  
Pressure Response ◽  
Fractured Reservoir ◽  
Well Test ◽  
Well Test Analysis ◽  
Test Analysis ◽  
The Barents Sea ◽  
Naturally Fractured

This paper successfully applied the geoengineering workflow for integrated well-test analysis to characterise fluid flow in a newly discovered fractured reservoir in the Barents Sea. A reservoir model containing fractures and matrix was built and calibrated using this workflow to match complex pressure transients measured in the field. We outline different geological scenarios that could potentially reproduce the pressure response observed in the field, highlighting the challenge of non-uniqueness when analysing well-test data. However, integrating other field data into the analysis allowed us to narrow the range of uncertainty, enabling the most plausible geological scenario to be taken forward for more detailed reservoir characterisation and history matching. The results provide new insights into the reservoir geology and the key flow processes that generate the pressure response observed in the field. This paper demonstrates that the geoengineering workflow used here can be applied to better characterise naturally fractured reservoirs. We also provide reference solutions for interpreting well-tests in fractured reservoirs where troughs in the pressure derivative are recognisable in the data.

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