DIMENSIONLESS PRESSURE AND PRESSURE DERIVATIVE RESPONSES OF A VERTICAL WELL COMPLETED IN A RESERVOIR WITH INCLINED IMPERMEABLE BOUNDARIES

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ABSTRACT

For effective well design, production scheduling, and optimal reservoir recovery, it is essential to comprehend the behavior of wells completed within reservoirs surrounded by sloping impermeable barriers. For a vertical well located between two inclined constant-pressure boundaries (CPBs), we investigate dimensionless pressures and their derivatives in this work. These CPBs have an inclination angle of 45, 60, 90, and 120 degrees. We perform an analysis where the dimensionless pressures of all image wells are superimposed onto the object well, and generalized equations for dimensionless pressure and its derivatives are derived. Moving anticlockwise from the object well, we take into account the distances of each individual well from the object well as well as the sign of each picture. Notably, we take into consideration the wellbore storage and wellbore skin. Angle Dependence: The constant-pressure boundary' angle of inclination affects dimensionless pressure and its derivatives. Dimensionless pressure has distinct gradients at late times. The method of analysis presented here can be used to determine the angles of inclination of two faults that a well is finished inside. Characterization close to the wellbore is also feasible. The angle of inclination of the faults can be used to determine the best well placement for injection or production. Because it is easier to acquire infrastructure and operational support, production operations at wells located closer to CPFs typically run more smoothly. On the other hand, wells that are farther distant can experience operational difficulties and logistical limitations, which could result in more frequent production disruptions. This research provides valuable insights into reservoir boundary types and informs practical decisions in well planning and reservoir management. By leveraging dimensionless pressure and its derivatives, engineers can enhance reservoir performance and optimize hydrocarbon recovery.

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