Evaluasi parameter fluida pemboran aerasi pada sumur panas bumi X lapangan AK
L Lapangan AK terletak di Lebong, provinsi Bengkulu sekitar 180 km dari kota Bengkulu. Sumur X Lapangan AK terletak di cluster E. Sumur X salah satu sumur yang telah di bor dilapangan AK dengan directional drilling dengan kedalaman 3203 Mku.Pada tugas akhir ini, penulis mencoba membahas evaluasi parameter pemboran aerasi pada zona total loss trayek lubang 12 ¼†Sumur X Lapangan Panas Bumi AK. Parameter yang diperlukan untuk evaluasi adalah kecepatan fluida aerasi di annulus ( Vann ), kecepatan minimal pengangkatan serbuk bor ( Vmin ), densitas fluida aerasi ( Ï ), dan viskositas fluida sirkulasi ( μ ).Dari hasil dilakukan evaluasi parameter – parameter di atas didapatkan hasil kecepatan rata – rata fluida aerasi sebesar 249,77 fpm, kecepatan minimal pengangkatan serbuk bor sebesar 69,79 fpm, densitas yang dihasilkan pada pemboran aerasi sebesar 1,53 ppg pada pemboran zona total loss, dan viskositas yang dihasilkan pada pemboran aerasi sebesar 60,47 cp
“AK†Field is located in Lebong, Bengkulu Province with around 180 km away from Bengkulu City. “X†Well is located in “E†Cluster. “X†Well is one of the well that was drilled directionally on “AK†Field with the depth of 3203 Mku. In this final assignment, the author tried to do the evaluation of aerated drilling fluid parameters on the 12 ¼†hole section that is believed to be the total loss zone in the geothermal “X†well on “AK†Field. Several parameters needed to be evaluated are the annulus velocity ( Vann ), minimum velocity to lift the cuttings( Vmin ), aerated mud density( Ï ), and the viscosity of the circulation fluid ( μ ). From the analysis of those parameters, the results are as follow, the average velocity of the aerated mud is 249.77 fpm, the minimum velocity to lift the cuttings is 59.79 fpm, the density used in this hole section (total loss zone) for drilling is 1.53 ppg, and the mud viscosity yields the number of 60.47 cp. These final parameters were used to drill the geothermal “X†well on “AK†Field successfully.