The microbial consortia from produced water at two different oil fields in Alaska (Kuparuk) and the North Sea (Ninian) were investigated for sulfate-reducing and methanogenic activity over a range of temperatures and for a variety of substrates. The consortia were sampled on site, and samples were either incubated on site at 60(deg)C with various substrates or frozen for later incubation and an...

Biosurfactants or surface-active compounds are produced by microoaganisms. These molecules reduce surface tension both aqueous solutions and hydrocarbon mixtures. In this study, isolation and identification of biosurfactant producing bacteria were assessed. The potential application of these bacteria in petroleum industry was investigated. Samples (crude oil) were collected from oil wells and 4...

An emerging method to increase the recovery of oil from subsurface reservoirs is the application of measurement and control techniques to better control the multiphase flow in the reservoir over the entire production period. In particular the use of sensors and remotely controllable valves in wells and at surface, in combination with large-scale reservoir flow models is promising. Various eleme...

Introduction Copyright 2004, Society of Petroleum Engineers Inc. There are many aspects of hydrocarbon production processes where understanding the flow of non-Newtonian fluids in porous media is of great interest. These include well drilling and construction, reservoir stimulation and production. In particular, complex polymeric solutions have been used for water-control purposes or to enhanc...

In recent decades, chemical surfactants have significantly been utilized in enhanced oil recovery (EOR) process and researchers still a distinctive look to applications of these chemicals. this study, Hexadecyl-tetra Methyl Ammonium Bromide (henceforth; HTMAB) Hexadecyl-Amino-Benzene Sulfonic Acid HABSA) were used as derive relative permeability curves for carbonate rocks. To end, the contact a...

The recently developed smart well technology allows for sectionalized production control by means of downhole inflow control valves and monitoring devices. We consider borehole radars as permanently installed downhole sensors to monitor fluid evolution in reservoirs, and it provides the possibility to support a proactive control for smart well production. To investigate the potential of borehol...