Productivity Analysis of Frac-pack Completion in M Well with Sand Problem Indication and High Permeability Formation

Abstract

: Sand problem is one of the obstacles happening in oil and gas wells, especially in poorly consolidated formation. flowing fluid will generate friction force during flow in porous media and in a longer timeframe, it can erode the wall of formation and sand will be produced along with the hydrocarbon and become problem in the whole production system. The negative impacts of this sand start from eroding the tubing wall until entering the surface facilities, such as separator. Due to this problem, the damaged equipment needs to be fixed or maintained, which means additional cost. Frac-pack is one of completion methods which is quite popular nowadays in oil and gas industry due to its proven effectiveness of utilization in the field. Frac-pack is a combination between hydraulic fracturing and sand control. Utilization of gravel pack only will cause additional skin for wellbore, leading to decrement of well productivity index. In frac-pack, the hydraulic fracturing process will cover the losses and reduce the skin generated. Therefore, sand problem can be mitigated, and production also can be compensated. This study will observe frac-pack, starting from its history, mechanism and effectiveness to be applied in M Well. The gravel pack size will be calculated first and is used as fun-damental of proppant size selection. Then, fracturing process simulation is done using commercial software generating fracture width and fracture half-length. The result will be used to calculate final well productivity by considering skin generated. This research has proven that productivity can be enhanced by using frac-pack until 5.23%. Therefore, frac-pack can be an effective choice of sand control completion method in M Well.