Reservoir Operation

Decline Curves Analysis commonly ordinarily applied to evaluate the original hydrocarbon in place, hydrocarbon reserves, and forecasting future production performance. The Decline Curves Analysis development was presented by Johnson and Bollens in (1928) and later on (1945) which is called "loss-ratio". Many discussions of the mathematical relationship between the past time, production rate, and the cumulative production depend on the decline rate.

Contact angles between fluids are important in capillary tube measurements in oil industry.  Contact angle measurements are important to determine both surface and interfacial tension between solids and various fluids. In the oil industry, it is very important to have a water-wet condition on the rock face in order to extract oil. If the rock wettability is oil wet, the oil company will need to make the right decision to improve oil recovery by injection of CO2 (Carbon Dioxide), surfactant, and/or mixed alkaline and surfactant to change the rock wettability.

This study is directed toward investigating possible effects of the anisotropy ratio on the analysis and result of buildup tests using Horner method. Even though most reservoirs are more or less homogeneous but not necessarily isotropic, there is no direct method for estimating the anisotropy ratio at reservoir scale despite the fact that this parameter affects to a great extent the reservoir behavior.  

There are a lot of multiphase flow correlations available in oil industry worldwide, but many times these correlations do not match with the real measured pressure data, consequently we need to get out the best correlation for this data which is give us the representative or reliable results close to measured data with the least error as possible as we can.

This research was conducted to solve problems of Super Absorbent Polymers (SAPs) dehydration in oil field applications.  Two polymer sizes were used separately and mixed with various brines.  After allowing the polymers to fully swell, oil was added to the mixture and the effects of Brine was observed.  Initial readings of oil effects on swelling was taken.  The samples were allowed to hear to 100 degrees Celsius and the effects were recorded. Oil increases the hydration of SAP's for both types of polymers.  Also, for both sizes of polymers, high temperatures caused polymers to float.