DEVELOPMENT OF SURFACE FACILITIES DESIGN PRINCIPAL IN GAS CONDENSATE RESERVOIR AS A FUNCTION OF RESERVOIR PROPERTIES VARIATION DISTRIBUTION

• Main Author: ASTELINA (NIM : 22208029), SARAH
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24211
• Institution: Institut Teknologi Bandung

This study was conducted in order to know the effect of changing reservoir properties distribution, in term of porosity and permeability to surface facilities <br /> <br /> <br /> design. Statistic method was used to distribute reservoir properties by changing standard deviation &#963; value of porosity normal distribution and p value of <br /> <br /> <br /> permeability p-normal distribution. PVT analysis and History Matching for the model was done first to get <br /> <br /> <br /> valid model, then followed by reservoir performance forecast with sensitivities of varying &#963; porosity distribution and p permeability distribution for each layer. Surface facilities design was adjusted with reservoir simulation result for each sensitivities. <br /> <br /> <br /> The result showed that change in porosity distribution which was affected by standard deviation &#963; value variation and p value variation in permeability <br /> <br /> <br /> distribution contribute to compressor, chiller, cooler, and pump in designing surface facilities for gas and condensate processing. Every &#963; (standard deviation <br /> <br /> <br /> of porosity distribution) set at 0.02 in every p value permeability distribution set at 0.5 affect surface facilities design, such as : compressor 1 power in gas processing unit at 2097 – 11,819 hp, compressor 2 power in gas processing unit at 1994 – 11,242 hp, chiller duty in gas processing unit at 5,769,964 – 32,539,029 Btu/hr, <br /> <br /> <br /> cooler 2 duty in gas processing unit at 4,843,421 – 27,300,865 Btu/hr, power pump in condensate processing unit at 0.901 – 5.82 hp, and cooler 1 duty in <br /> <br /> <br /> condensate processing unit at 25,770 – 120,412 Btu/hr. Decreasing standard deviation &#963; at 0.02 in every p value permeability distribution set at 0.5 have small effect in surface facilities design, such as : compressor 1 power in gas processing unit at 2097 hp, compressor 2 power in gas processing unit at 1994 hp, chiller <br /> <br /> <br /> duty in gas processing unit at 5,769,964 Btu/hr, cooler 2 duty in gas processing unit at 4,843,421 Btu/hr, power pump in condensate processing unit at 0.901 hp and cooler 1 duty in condensate processing unit at 25,770 Btu/hr. Increasing of standard deviation &#963; at 0.1 in every p value permeability distribution set at 0.5 <br /> <br /> <br /> have big effect in surface facilities design, such as : compressor 1 power in gas processing unit at 11,819 hp, compressor 2 power in gas processing unit at 11,242 hp, chiller duty in gas processing unit at 32,539,029 Btu/hr, cooler 2 duty in gas processing unit at 27,300,865 Btu/hr, power pump in condensate processing unit at 5.82 hp and cooler 1 duty in condensate processing unit at 120,412 Btu/hr. Sharp increase to line formed from &#963; = 0.02 to &#963; = 0.04 for every p permeability distribution, this is caused by the smaller of standard deviation &#963; value of porosity distribution, the higher porosity distribution uniform, and vice versa.