#TITLE_ALTERNATIVE#

• Main Author: FIRWANDI (NIM : 22215033), DENI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26481
• Institution: Institut Teknologi Bandung

Hydraulic fracturing is used to construct a high conductivity tunnel to allow fluids flowing easily from reservoir to wellbore hole. High conductivity tunnel is achieved by pumped sum of proppant into reservoir and keep it open. <br /> <br /> Coalbed methan (CBM) is a gas that extract from the body of coals. Gas is exist in the matrix and the water exist in coal body fractures. It need to lowering coal pressure by produce water and then gas will flow to the wellbore hole. <br /> <br /> The coals permeability is low and it represented by permeability of coal body (face cleats & butt cleats). Well stimulation is a common method that apply at CBM well to increase well productivity. <br /> <br /> This research focus on how to obtain optimum cost and volume of proppant and fluids by making sensitivity on proppant and fluids volume that use to reach half length (Xf) desired. <br /> <br /> The background to obtain optimum cost due to gas production from coalbed methan is low. Optimum cost could be reach by minimize the material that injected to reservoir like proppant and fluid. <br /> <br /> The cost component of hydraulic fracturing are fixed cost like pump & well site preparation and dynamic cost that rest on on the volume of proppant and fluids that used for hydraulic fracturing. Research focused on how much the volume of proppant and fluids to get optimum cost for half length desired 100, 200, 300, and 400 ft. The reference for half length desired are well spacing for CBM wells that need many wells to developed CBM fields for producing. <br /> <br /> After determination of the objective study, the following step is gathering data. The data are CBM-X well include well schematic, zone objective depth, the injectivity test and mini fract results. The well stimulation software is used as a tool to calculate the sum of fluids (pad and slurry), proppant and cost for hydraulic fracturing at CBM-X well. The real proppant and fluids (crosslinxer and breaker) that used at CBM-X well are simulated at the well stimulation software and calculate the volume of proppant and fluids to get optimum cost for half length desired 100, 200, 300, and 400 ft. The concentration of proppant at simulation are 4, 6, 8, 10, and 12 PPA. The constraint for hydraulic pump is 20 bpm. <br /> <br /> Well stimulation software outputs are the sum of fluids (pad and slurry), proppant and costfor hydraulic fracturing. Based on utilized of proppant and fluids volume, the software will choose the optimum cost of hydraulic fracturing to get halft length desired at 100, 200, 300, and 400 ft based on the lowest cost of simulation results. <br /> <br /> The optimum volume of proppant and fluids for half length 100 ft desired is at proppant cosentration 12 PPA that utilized 17,913 lb proppant and 2,801 gal fluids. The optimum volume of proppant and fluids for half length 200 ft desired is at proppant cosentration 10 PPA that utilized 52,927 lb proppant and 10,388 gal fluids. The optimum volume of proppant and fluids for half length 300 ft desired is at proppant cosentration 10 PPA that utilized 102,976 lb proppant and 23,154 gal fluids. And final the optimum volume of proppant and fluids for half length 400 ft desired is at proppant cosentration 8 PPA that utilized 146,733 lb proppant and 41,588 gal fluids.