Oil & Gas Glossary 1.0
OIL & GAS TECHNICAL TERMS GLOSSARY
If you are looking for a definition of any technical terms in oil & gas field, then this site is yours.
Until now, we've collected around 2000 technical terms, but if this still not enough, and you've found any term that is not in our database, please contact us, and we will happily find it for you, or you can just check it again later, because every unsuccessful search will be recorded by our system for later update.
Thanks and happy searching ^^.
Search Result for Pound Equivalent
pound equivalent
A laboratory unit used in pilot testing. One gram or pound equivalent, when added to 350 ml of fluid, is equivalent to 1 lb/bbl.
barrel equivalent
A laboratory unit used for evaluating or testing drilling fluids. One gram of material, when added to 350 milliliters of fluid, is equivalent to 1 pound of material when added to one 42-gal barrel of fluid.
equivalent weight or combining weight
The atomic or formula weight of an element, compound, or ion divided by its valence. Elements entering into combination always do so in quantities proportional to their equivalent weights.
ECD
Abbreviation: equivalent circulating density.
normal solution
A solution that contains 1 gram-equivalent of a substance per liter of solution.
filter paper
Porous unsized paper for filtering liquids. API filtration test specifies one thickness of 9-cm filter paper Whatman No. 50, S & S No. 576, or equivalent.
barrel (bbl)
1. a measure of volume for petroleum products in the United States. One barrel is the equivalent of 42 U.S. gallons or 0.15899 cubic meters (9,702 cubic inches). One cubic meter equals 6.2897 barrels.
equivalent circulating density (ECD)
The increase in bottomhole pressure expressed as an increase in pressure that occurs only when mud is being circulated. Because of friction in the annulus as the mud is pumped, bottomhole pressure is slightly, but significantly, higher than when the mud is not being pumped. ECD is calculated by dividing the annular pressure loss by 0.052, dividing that by true vertical depth, and adding the result to the mud weight.
epm or equivalents per million
Unit chemical weight of solute per million unit weights of solution. The epm of a solute in solution is equal to the ppm (parts per million) divided by the equivalent weight.
normal formation pressure
Formation fluid pressure equivalent to about 0.465 pounds per square foot of depth from the surface. If the formation pressure is 4,650 pounds per square inch at 10,000 feet, it is considered normal.
pressure gradient
1. a scale of pressure differences in which there is a uniform variation of pressure from point to point. For example, the pressure gradient of a column of water is about 0.433 pounds per square inch per foot (9.794 kilopascals per meter) of vertical elevation. The normal pressure gradient in a formation is equivalent to the pressure exerted at any given depth by a column of 10 percent salt water extending from that depth to the surface 0.465 pounds per square inch per foot or 10.518 kilopascals per meter).