Analysis of commingled tight gas reservoirs
Conference
·
OSTI ID:468152
- Texas A&M Univ., College Station, TX (United States)
This paper presents a method to match the production data of commingled tight gas reservoirs. A simple computer program is used to history match production data, estimate the individual OGIP and productivity of each layer, and forecast the total performance of the well. The method was verified against both simulation and actual field data. The method is based on a layered model that couples the material balance equation for gas reservoirs with the stabilized gas flow equation for each layer in the commingled system. The analysis is done through history-matching the total well production data using an optimization routine to help determine the two parameters (OGIP and flow coefficient) of each layer that best match the production history. The method showed excellent results for cases that arc predominantly in the stabilized flow period. This method can be used to analyze commingled tight gas reservoirs and predict their performance. It can be also used to obtain the OGIP value for each layer and assess the relative importance of each layer in the commingled system.
- OSTI ID:
- 468152
- Report Number(s):
- CONF-961003--
- Country of Publication:
- United States
- Language:
- English
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