June 2010

Analytical critical drawdown (CDD) failure model for real time sanding potential prediction based on Hoek and Brown failure criterion

  The risks of failure in sand reservoirs and consequent sand production is now a stark reality in the upstream oil and gas industry. As a result, failure analysis of reservoir rocks for sanding potential prediction purposes has become a routine activity more than ever before. Owing to the huge economic, operational and safety implications of risks of sand failure, the efficient management of these risks for...

Author(s): Gbenga Folorunso Oluyemi  and M. Babs Oyeneyin

June 2010

A proactive approach for predicting and preventing wax deposition in production tubing strings – The Niger Delta experience

  A proactive approach for managing wax deposition problems during production operation is presented. A predictive thermodynamic model is employed to determine the onset condition(s) for wax precipitation in hydrocarbon mixtures. The parameters of a continuous distribution function are used to establish the nature of hydrocarbon mixtures while a fluid temperature distribution model enables the determination of...

Author(s): A. A. Sulaimon, G. K. Falade and W. DeLandro

June 2010

Experimental study on the effects of kerosene-doped gasoline on gasoline-powered engine performance characteristics

  This investigation was carried out to study the engine-out emissions from a four-stroke, four-cylinder, water-cooled spark ignition (SI) engine with kerosene blended gasoline with different proportions of kerosene ranging from 0 - 50% by volume in step of 10%. Gaseous exhaust emissions were measured with the aid of pocket gas TM-portable gas analyzer. The experimental results showed that the engine-out...

Author(s): O. Obodeh and N. C. Akhere