- Branche: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
- Company Profile:
Pertaining to a hydrocarbon source rock that has generated as much hydrocarbon as possible and is becoming thermally altered.
Industry:Oil & gas
Pertaining to a cement that is not easily dispersed by a material known as a dispersant. This term is commonly abbreviated as DTD.
Industry:Oil & gas
Pertaining to a depositional environment or organisms from a marsh. It also refers to the type of environment in which palustrine sediments can accumulate.
Industry:Oil & gas
Personnel who operate the drilling rig. The crew typically consists of roustabouts, roughnecks, floor hands, lead tong operators, motormen, derrickmen, assistant drillers, and the driller. Since drilling rigs operate around the clock, there are at least two crews (twelve hour work shifts called tours, more common when operating offshore), or three crews (eight hour tours, more common onshore). In addition, drilling contractors must be able to supply relief crews from time to time when crew members are unavailable. Though less common now than in years past, the drilling contractor may opt to hire only a driller, and the driller in turn is responsible for hiring everyone reporting to him.
Industry:Oil & gas
Parting or breaking of the drillstring downhole due to fatigue or excessive torque.
Industry:Oil & gas
Parallel strata that have undergone a similar geologic history, deposited in succession without interruption.
Industry:Oil & gas
Outside or outer diameter. Casing and tubing are commonly described in terms of inside diameter (ID) and outside diameter.
Industry:Oil & gas
Organic material having low solubility. Resins are usually large and complex polymeric molecules with noncrystalline structure and no distinct melting point or other definitive properties. Resins are used as additives to improve filter cake, provide lubricity or stop lost circulation as lost-circulation material. Resins are derived from plant sources (such as pine trees), some are residues of manufacturing processes and some resins are mined material.
Industry:Oil & gas
Organic carboxylic acids of complex molecular structure (aromatic and phenolic) that comprise 10 to 90% of lignite. Humic acids in lignite react with caustic ingredients (NaOH and KOH) in mud. The water solubility of lignite depends on its humic acid content. Decarboxylation of humic acid groups by hydrolysis in alkaline muds is a major source of carbonate and bicarbonate anions in water muds.
Industry:Oil & gas
