EOR Steam Injection Huff and Puff Method: An Analysis of Production Response in Low Performance Well

Abstract

Steam Injection Huff and Puff is one of the EOR methods by injecting heat energy in the steam phase to reduce oil viscosity and reproducing oil in the same well. The geological structure of this field is a complex-faulted anticline that compartmentalized the field into five blocks with two potential blocks for EOR Steam Injection Huff and Puff Method. The oil properties are categorized as heavy oil because of high viscosity, high pour point, high congealing point, and low API degree. Therefore, the Recovery Factor (RF) only reaches 14% with EOR method. Screening criteria is conducted for selecting well candidate with low performance. It means the well with oil temperature <110 oF and flow rate <20 BOPD. EOR Steam Injection Huff and Puff Method consists of three stages such as injection period, soaking period and production period. The steam design becomes a reference in determining the duration of each stage. The duration of EOR Steam Injection Huff and Puff Method has been estimated for a total of 20 days with 11 days for injection period and 9 days for soaking period. There are three parameters used to analyze the production response after EOR Steam Injection such as Productivity Index (PI), Inflow Performance Relationship (IPR) Curve, and Production Rate Test (PRT). These parameters show the comparison before and after EOR Steam Injection. Based on these three parameters, EOR Steam Injection Huff and Puff Method has successfully improved 76% of oil production in this well. This study concludes that there are four critical factors for the success of EOR Steam Injection using Huff and Puff Method, and will be described explicitly in this paper.