- Industry: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
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A curve used to generate a certain type of fractal geometry. Straight lines are replaced by regular polygons repeatedly. These curves look like a snowflake when displayed graphically and are used to illustrate that a curve has a fractal dimension D>1.
Industry:Oil & gas
A crude oil that contains water, normally in the form of an emulsion. The emulsion must be treated inside heaters using chemicals, which will break the mixture into its individual components (water and crude oil).
Industry:Oil & gas
A crude oil containing paraffin wax but very few asphaltic materials. This type of oil is suitable for motor lubricating oil and kerosene.
Industry:Oil & gas
A crude oil containing hydrogen sulfide, carbon dioxide or mercaptans.
Industry:Oil & gas
A crosswell seismic technique that incorporates reflection traveltimes and direct traveltimes into a tomographic inversion algorithm to produce images of seismic velocity between wells.
Industry:Oil & gas
A crack or surface of breakage within rock not related to foliation or cleavage in metamorphic rock along which there has been no movement. A fracture along which there has been displacement is a fault. When walls of a fracture have moved only normal to each other, the fracture is called a joint. Fractures can enhance permeability of rocks greatly by connecting pores together, and for that reason, fractures are induced mechanically in some reservoirs in order to boost hydrocarbon flow. <br><br>Fractures may also be referred to as 鈥渘atural fractures鈥?to distinguish them from fractures induced as part of a reservoir stimulation or drilling operation. In some shale reservoirs, natural fractures improve production by enhancing effective permeability. In other cases, natural fractures can complicate reservoir stimulation.
Industry:Oil & gas
A corrosion test instrument mainly used in sour systems (for example, hydrogen sulfide or other sulfide rich environments) to determine qualitatively or semiquantitatively the corrosion of a structure. <br><br>A hydrogen probe is also called a hydrogen patch probe.
Industry:Oil & gas
A corrosion by-product (FeS<sub>2</sub>) formed when hydrogen sulfide (H<sub>2</sub>S) contacts the iron (Fe) present in steel. <br><br>Ferrous sulfide is a black crystalline material at bottomhole conditions. However, when it contacts air at surface, it will be converted into iron oxide, which is a red-brown compound. <br><br>Ferrous sulfide is also called iron sulfide.
Industry:Oil & gas
A correction number for the meter. It is determined by calibrating the meter using an incompressible fluid (liquid).
Industry:Oil & gas
A core that is in the same state as when it was brought to the surface. A fresh core is sealed as soon as possible after retrieval from the well to minimize the loss of fluids and exposure to air. The term implies that the core is analyzed before being stored, after storage it is known as preserved core. Since the purpose is to minimize alteration, a fresh core has often been drilled with a bland mud, either water- or oil-base, but with a minimum of chemical additives and weighting material.
Industry:Oil & gas
