Reservoir engineering study of haripur oil field

Abstract

In a reservoir engineering study, pressure tranSient analysis and reservoir simulation are very important 10 know ditYercnl reservoir information and predict flilure production performance. This study usc, pressure transient analysis sollware SAPl HR and simulation software EXQ[)US to lind out re:;crvoir characteristic, and production scenarios ofHaripur oil field. A reservoir model has been built bOlh illr pressure transient analysis and reservoir simulation Two dilferent cases have been simulated to stlldy the possibility ora gas cap. The reservoir model lakes into account the high visco,ity effect> weltbore storage, skin, heavier hydrocarbon, wax accumulation inside the tubing and ditTel'ent possible inner and outer boundary conditlOns. The model has been validaled by comparing the resulls of the pressure transient analysis with those or IKM analysis published in the literature Also the >lmulation results have been veriiied by comparing total simulated Pl'OdUCIiOnfrom the Haripur I (Sylhet 7) with the actual production unlil it~ production stopped on the 14Lh o1'.July, 1994. Thc pressure tran,ient analysi, ha5 yielded the wellbore storage coellicient, pcrmeability, reservoir capacity and skin factor which are very e1o~eto those obtmned from the IKM study. [n the 51mulation study, the well has produced al much lower nOv,Tatcs Ihan the aClual flowrales, but the lotal produclion figures are very e10se From the simulatlon study, it ha5 been e~tabli~hed that inilially the reservoir has no ga~ cap The causes of the producllon ~loppage have al~o been analyzed usmg the available information m the literature