| Autor: |
Qureshi, Umair, Qureshi, Haris Ahmed, Bhatti, Amanat Ali, Saeed, Muhammad Salman, Khalid, Muhammad Sameer |
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| Zdroj: |
Arabian Journal of Geosciences; Nov2023, Vol. 16 Issue 11, p1-12, 12p |
| Abstrakt: |
The rudimentary findings associated with the optimum operation of a gas reservoir highlight the interdependence of the network of fractures, rock matrix, and reservoir permeability. However, if due to any drilling issue, the well is drilled in a section where it does not encounter any fracture, or if the fracture network is disconnected from the matrix, productivity is greatly reduced. Stimulation methods (matrix acidizing and acid fracturing) are deployed to restore/enhance the reservoir permeability to improve the productivity of a reservoir. Stimulation methods play a crucial role in addressing the challenge of restoring and enhancing a reservoir's capability to improve production. Acidizing and fracturing are the two stimulation methods commonly used. The selection of these methods mainly depends on the type of reservoir and its characteristics. In this paper, the effects of matrix acidizing and acid fracturing on a carbonate reservoir are presented. STIMPRO® designed for matrix acidizing/analysis and FRACPRO® designed for fracture geometry analysis enabled the convergence of the actual well data. An acid chemical recipe is designed to execute the matrix fracturing treatment. The stimulation diversion technique, maximized pressure differential and injection rates (MAPDIR), is used to inject the cited acid chemical recipe at designed injection rates in the reservoir. Well test analysis using ECRIN® and production optimization through PIPESIM® are carried out to maximize the efficiency of the matrix acidizing and acid fracturing. The well production increased fourfold to 1 MMSCFD post-matrix acidizing job. The overall well production of 14.6 MMSCFD was observed post-acid fracturing employing the designed acid recipe with MAPDIR diversion. The economic viability of both the treatments was evaluated using the decline curve analysis (DCA) technique which showed a considerable increase in low and best estimates (1P, 2P) of reservoirs post-acid fracturing jobs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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