Application of gas-assisted gravity drainage (GAGD) to improve oil recovery of Rang Dong basement reservoir

As an option to improve the ultimate oil recovery factor of Rang Dong field, a feasibility study gas-assisted gravity drainage (GAGD) application was carried out for fractured basement reservoir with single-well Huff ‘n’ Puff pilot test applied on high water-cut producer. This paper aims provide in-depth understanding about such case study, which includes details candidate selection, gas injection scheme, on-site execution, results flow-back, post-job review and lessons learned. 
 The GAGD recorded good rate low during flowing back after shut-in segregation, suggests positive effectiveness some degree. expansion other wells areas in field would be encouraged any similar situation. On hand, this shed light into further optimisation selection scheme by material balance analysis simulation respectively.