Field and Experimental Investigations on the Effect of Reservoir Drill-In Fluids on Penetration Rate and Drilling Cost in Horizontal Wells

In this study, the reservoir drill-in fluid (RDF) was modified and optimized to improve rheological properties reduce filtration of drilling used for oil-bearing zone horizontally. polymer science, degradation generally refers a complex process, by which polymeric material exposed environment workload loses its original properties. Degradation is usually an unwanted process. certain cases, however, controlled useful. For instance, it can processability or be in recycling natural decomposition waste polymer. Thus, parameter data 30 horizontal wells that were drilled south Iraq collected using several fluids (RDFs), including FLOPRO, salt mud (SPM), non-damaged (NDF), FLOPRO_PTS-200 (including thermal stabilizer). The obtained results showed temperature stabilizer (PTS-200) enabled reducing rate 44.33% improved 19.31% as compared with FLOPRO. Additionally, average cost NDF SPM section selected around USD 96,000 91,000, respectively. However, FLOPRO-based less section, 45,000.