Improving recovery percentage of residual oil Simulated Reservoir Using Petroleum and non-Petroleum Base Surfactants

• Main Author: Perpustakaan UGM, i-lib
• Format: Article NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 1999
• Subjects: Jurnal i-lib UGM
• Online Access: https://repository.ugm.ac.id/17793/; http://i-lib.ugm.ac.id/jurnal/download.php?dataId=561
• Institution: Universitas Gadjah Mada

Development and finding chemicals and physical/chemical processes have been done for optimizing sweep efficiencies and reducing interfacial tension to minimize residual oil in the reservoir so that oil production can be improved. A laboratory experiment had been carried out to simulate the process. The porous media used in the oil displacement process was prepared from stainless steel cylinder and contain fine crushed core. It is proposed to be an artificial reservoir with dimension about 3.75 cm ID x 10.8 cm L. The procedure of operation is as follows: initially the reservoir model was filled with brine (1 to 3 % salt concentration) until 100 % saturation. Then oil was injected into the medium to represent oil migration until water saturation become minimum (S�,), which is about 30 % (measured by electrical method). After this, the reservoir was flooded by the same brine until So,. was reached, which is about 10 %. The oil remaining in the reservoir after this water flood was then subjected to various injection of different chemicals for further oil recoveries. The results show that several chemicals found in Indonesian market and developed in the laboratory can improve oil recovery up to 95 %from remaining � oil or up to 30 % from the original oil in place. Further experiments show that type of crude oil, chemicals and chemical concentration, influence the oil recovery. It turns that the mathematical models proposed were in a good agreement with the experimental data.