Deacetylated Crustacea Shells Innovation as Upgrade Material for High Performance Water Base Mud (HPWBM)

Abstrak

High-Performance Water Base Mud (HPWBM) is a water base drilling fluid that has been raised to overcome several hole problems such as wellbore instability, caving shale and depleted reservoir sands. HPWBM itself is a WBM that provides additional additives to minimize solid content when stabilizing clay which has a tendency to swelling, clog the lost circulation zone, and also to minimizes differential sticking potential caused by depleted reservoir sands. The additives used in HPWBM can be like Synthetic Polymer or Natural Polymer which both have their advantages and disadvantages. When we use HPWBM we must attentive to the composition contained in the HPWBM, and also regarding the environmental impact caused by the use of the composition of HPWBM. HPWBM uses Polymer as its additives to provide good cutting integrity so that the cutting will be nonsticking and we can maximize shale-shakers capabilities in the required flow rate. In HPWBM it is necessary to add Biocide material as a supporting material to avoid heatresistant bacteria that will invade into drilling fluids and degrade the polymers contained in HPWBM resulting in HPWBM quality degradation. To solve the lost circulation zone we use Calcium Carbonate. We use crustacean shells because we want to take chitin extract, then the chitin will be deacetylated to get the chitosan. Based in drilling fluid research,
chitosan has many functions that correlated with the polymer in drilling fluids, the first chitosan can be the lost circulation  material with cellulosic fibrous type, the second one chitosan can be biocide companion material because chitosan is hemostatic, fungicidal, and bactericidal, chitosan can be disposal and corrosion control. The main thing is that chitosan is obtained from food-waste so that by using chitosan we can reduce the impact produced by the decomposition of incomplete organic waste.