Pengaruh Injeksi Surfaktan Dan Polimer Pada Recovery Factor Minyak Sumur Asl

Abstract

Pengembangan teknologi proses produksi surfaktan MES (Metil Ester Sulfonat) dari minyak sawit untuk aplikasi EOR/IOR pada lapangan ASL telah dilakukan sebelumnya melalui penelitian secara terus menerus dan berkesinambungan. Studi laboratorium recovery minyak dilakukan dalam 6 metode penginjeksian yaitu dengan Surfaktan (0.3%) + Polimer P1 (0.2%), Surfaktan (0.3%) + Polimer P2 (0.2%), Surfaktan (0.3%) Polimer P1 (0.15%) + Polimer P1 (0.2%), Surfaktan (0.3%) Polimer P2 (0.15%) + Polimer P2 (0.2%), Surfaktan (0.3%) + Surfaktan (0.3%) Polimer P1 (0.15%) + Polimer P1 (0.2%), Surfaktan (0.3%) + Surfaktan (0.3%) Polimer P2 (0.15%) + Polimer P2 (0.2%). Viskositas pada pengukuran polimer 1 (P1) sebesar 28,79 cp, polimer 2 (P2) sebesar 18,41 cp, surfaktan+Polimer 1 sebesar 11,07 cp, surfaktan+polimer 2 sebesar 9,28 cp. Recovery minyak pada injeksi Surfaktan (0.3%) + Polimer P1 (0.2%) sebesar 0,50 ml atau 11,0%, injeksi %), Surfaktan (0.3%) + Polimer P2 (0.2%) sebesar 0,45 ml atau 9,2%, injeksi Surfaktan (0.3%) Polimer P1 (0.15%) + Polimer P1 (0.2%) sebesar 0,90 ml atau 17,3%, injeksi Surfaktan (0.3%) Polimer P2 (0.15%) + Polimer P2 (0.2%) sebesar 0,85 ml atau 15,7%, injeksi Surfaktan (0.3%) + Surfaktan (0.3%) Polimer P1 (0.15%) + Polimer P1 (0.2%) sebesar 1,15 ml atau 23,0%, injeksi Surfaktan (0.3%) + Surfaktan (0.3%) Polimer P2 (0.15%) + Polimer P2 (0.2%) sebesar 1,05 ml atau 19,8%. Recovery minyak yang didapat dari tahap waterflood berada pada kisaran 50.50% sampai 59.60% IOIP (Initial Oil In Place). Oil Recovery yang didapat oleh uji core flood menggunakan injeksi chemical berada di angka 9.2% - 23%, sehingga total recovery yang diperoleh 61.2% sampai 76.90%. Dari injeksi chemical yang paling efektif dilakukan yaitu dengan injeksi Surfaktan (0.3%) + Surfaktan (0.3%) Polimer P1 (0.15%) + Polimer P1 (0.2%) dengan recovery factor (RF) 1,15 ml atau 23%.

Fluid Flow Regimes Analysis on Drilling Fluid Circulation for Cuttings Lifting in Vertical Drilling Oil Wells

“…Two velocities need to be considered for the success of the cuttings lifting process, namely the annular velocity and the velocity at which the cuttings drop to the bottom at the time the lifting is carried out. Analysis of the annular velocity and the velocity at which the cuttings drop will be obtained whether the drilling fluid circulated into the well hole during drilling activities can lift the cuttings [4], [5].…”

“…Some of the rheology and physical properties of drilling mud are the density of the drilling fluid, the regime of the flow, the size of the annulus velocity of the drilling fluid. In addition, some of the properties of cutting also need to be considered, namely the density of cutting and the regime of the cutting, as well as the velocity at which the cuttings drop [4], [8], [9]. Drilling mud fluid belongs to the non-Newtonian fluid type, namely the Bingham Pseudoplastic [10], [11].…”