- Industry: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
- Company Profile:
A model of a reservoir that incorporates all the characteristics of the reservoir that are pertinent to its ability to store hydrocarbons and also to produce them. Reservoir characterization models are used to simulate the behavior of the fluids within the reservoir under different sets of circumstances and to find the optimal production techniques that will maximize the production.
Industry:Oil & gas
A model for converting relative elemental yields from a pulsed neutron spectroscopy log to absolute weight concentrations using the assumption that the sum of all oxides in the rock matrix is 1. The model is based on the observation that, with few exceptions, sedimentary minerals are oxides, so that the sum of the dry weight percent of all oxides must be 100%. The weight percent of an oxide can be calculated from the dry weight percent of the cation by knowing the chemical formula (for example, SiO<sub>2</sub> from Si). <br><br>The absolute dry weight percent, W, of element i is given by W<sub>i</sub> = F * Y<sub>i</sub> / S<sub>i</sub> where F is the unknown normalization factor, Y<sub>i</sub> is the measured spectral gamma ray yield and S<sub>i</sub> is the tool sensitivity to that element, measured in the laboratory. The dry weight percent of the oxide is then O<sub>i</sub> = F* X<sub>i</sub> * Y<sub>i</sub> / S<sub>i</sub> where X<sub>i</sub> is the oxide association factor, given by the chemical formula. Since the sum of all O<sub>i</sub> equals 1, it is possible to calculate F and determine each W<sub>i</sub>.
Industry:Oil & gas
A mobile high-pressure pumping unit commonly used for cementing or stimulation operations. Most pump units are configured with a high-pressure triplex pump and one or more centrifugal pumps to precharge the triplex pump and handle displacement fluids.
Industry:Oil & gas
A mixture of hydrofluoric acid (HF) and hydrochloric acid (HCl) or organic acid used as the main fluid in a sandstone matrix treatment. Hydrochloric acid or organic acid is mixed with HF to keep the pH low when it spends, thereby preventing detrimental precipitates. The name 鈥渕ud acid鈥?was given to these mixtures because they were originally developed to treat damage from siliceous drilling muds. Mud acid is also called hydrofluoric-hydrochloric acid.
Industry:Oil & gas
A mixture of crude oils, blended in the pipeline to create a crude with specific physical properties. Because heavy and extra-heavy crudes or bitumens cannot flow from the field to the refinery in their original state and at normal surface temperatures, they are blended with lighter crude oils primarily to reduce viscosity, thereby enabling transportation to a refinery. A secondary objective may be to provide a blended crude oil that has significantly higher value than the raw heavy crude. The blend is usually constructed so that the value of the overall blended volume is greater than the summed value of the initial volumes of individual heavy and light crudes.
Industry:Oil & gas
A method to convey or reserve oil, gas or mineral rights at specific depths or geologic horizons.
Industry:Oil & gas
A method to convey or reserve oil, gas, or mineral rights in a defined portion of land such as the Northwest Quarter of a tract.
Industry:Oil & gas
A method of updating distributions that requires that prior distributions of the required geological characteristics are defined and that calculation of the posterior distributions be based on an exact stochastic model.
Industry:Oil & gas
