Rate transient analysis of Well-07 and Well-10 of Habiganj gas field, Bangladesh

Rate transient analysis (RTA) plays a significant role in the research and development sector of petroleum industry to know about the reserves and physical properties of commercially expected hydrocarbon fluids of a petroleum field. In this research, to conduct a rate transient analysis study; reservoir properties, well properties and Production data over the year of 2007 from two gas producing wells, Well-07 and Well-10 of Habiganj gas field, Bangladesh were used. There are two gas zones in this gas field: upper gas sand (UGS) and lower gas sand (LGS). Only UGS was considered as a gas reservoir in this research work due to no producing well in LGS. Software FEKETE, F.A.S.T.RTA™ (version 4.5.1.277), IHS Inc. was used to conduct this research. The objectives of this research were to estimate gas initially in place (GIIP) and expected ultimate recovery (EUR) of Well-07 and Well-10, to determine permeability and skin surrounding each of these two producing wells. After completion of the analysis, the GIIP and EUR values of Well-07 were estimated to 435.082 billion cubic feet (Bcf) and 304.558 Bcf, and those of 475.242 Bcf and 332.67 Bcf of Well-10, respectively. Skin effect and permeability in the surrounding of each of these producing wells were amounted to 7.017 and 3.0396 millidarcy (md) for Well-07 and those of 7.014 and 2.7839 md for Well-10, respectively, by the end of the year of 2007.