PRODUCTION CHOKE SIZES

The production of oil and gas globally can only be made possible with the aid of drilling technology. However, after well completion, that is making a well ready for production, the surface equipment such as wellhead and Christmas tree is required to flow in the well. The production Choke is precisely regulating the flow of oil or gas to achieve a carefully calculated rate of
recovery. By maintaining the correct backpressure, chokes can increase the ultimate recovery of hydrocarbons from a formation pressure decline, reduce sand production and the migration of fines, possibly control water coning and gas fingering, and minimize tree damage from erosion caused by turbulence and cavitations. Two wells were discussed, Well No (SELE 01) and (SELE
02), the effect of increase in the choke sizes were seen to affect the reservoir characteristics, i.e. Pressure decline, API, Flow rates, Sand Control, Water cut, etc. The results and analysis has shown that as the choke size increased, the flow rate increased, the rate of decline of the FTP increased, the API increased and the Water cut also increased. The choke size was later adjusted to a value of 16/64’’ for well NO (SELE 01) and 30/64’’ for well NO (SELE 02) in order for the well to flow at an optimum rate. At this rate, the pressure decline was also maintained, little or no water cut, and traces of sand. Conclusively, to maintain optimum flow rate, the choke size was carefully chosen so that the pressure in the reservoir is maintaine