Model Laju Penetrasi (ROP) untuk Optimasi Pemboran Sumur Panas Bumi di Sebuah Lapangan di Indonesia
The main aim of optimization is that drilling operations can be accomplished with the shortest time and lowest cost. Drilling experience, especially in the same field required in the optimization of subsequent drilling operations. There are two common ways to drilling operations optimization, the optimization of bit selection and optimization of the drilling operation parameters. Cost per Foot (CPF) methods are commonly used in the bit selection optimization of the Geothermal drilling with rotary system. H. Rabia (1985) developed an easier method for the bit selection optimization called Specific Energy.
The rate of penetration (ROP) is one of the main important factors that need to be analyzed in the optimization of drilling operations parameters. Bourgoyne (1974) developed a rate of penetration model in oil and gas well drilling is generally dominated by sedimentary rock formations by considering several drilling parameters including: 1) compressive strength and formations abrasiveness, 2) drilling fluid property, 3) weight on bit (WOB) and rotary speed, 4) bit tooth wear , and 5) bit hydraulics.
The objective of this study is to test the rate of penetration models Bourgoyne & Young's rate of penetration model (BYM) to the rate of penetration modelling in drilling of geothermal wells in Indonesia, which is dominated by the volcanic rock formations. Volcanic rock properties generally have a hard, abrasive and heterogeneous due to the presence of the geothermal fluid alteration. Exponential constants needed for BYM generated from existing well data. The results of the data matching between the rate of penetration the well data with the results of BYM concluded that the Bourgoyne & Young's rate of penetration model can be used to geothermal well drilling.