- Settore: Oil & gas
- Number of terms: 8814
- Number of blossaries: 0
- Company Profile:
Cement that has no additives to modify its setting time or rheological properties.
Industry:Oil & gas
Chemical extracted from the bark of trees and used as clay deflocculant in water muds. Tannins are moderate molecular weight, anionic polymers with complex structures. Quebracho is a tannin.
Industry:Oil & gas
Chemical treatment or mechanical processes that improve a mineral or ore for its designed use. For example, barite and bentonite clay minerals are beneficiated in order to help them meet certain specifications for use in drilling fluids. <br><br>Reference:<br>Garrett RL: "Quality Requirements for Industrial Minerals Used in Drilling Fluids," Mining Engineering 39, no. 11 (November 1987): 1011-1016.
Industry:Oil & gas
Calcium carbonate, such as limestone, marble or oyster shells, that has a specified minimum and maximum range of particle sizes and may also have a specified distribution of sizes. It is used as a bridging agent in drill-in, workover and completion fluids to positively seal permeable zones by plugging pores at the wellbore face. It has the additional advantage that it can be dissolved by acid treatment to clean up the zone afterwards.
Industry:Oil & gas
Anything left in a wellbore. It does not matter whether the fish consists of junk metal, a hand tool, a length of drillpipe or drill collars, or an expensive MWD and directional drilling package. Once the component is lost, it is properly referred to as simply "the fish. " Typically, anything put into the hole is accurately measured and sketched, so that appropriate fishing tools can be selected if the item must be fished out of the hole.
Industry:Oil & gas
Any unskilled manual laborer on the rigsite. A roustabout may be part of the drilling contractor's employee workforce, or may be on location temporarily for special operations. Roustabouts are commonly hired to ensure that the skilled personnel that run an expensive drilling rig are not distracted by peripheral tasks, ranging from cleaning up location to cleaning threads to digging trenches to scraping and painting rig components. Although roustabouts typically work long hard days, this type of work can lead to more steady employment on a rig crew.
Industry:Oil & gas
Anything in the wellbore that is not supposed to be there. The term is usually reserved for small pieces of steel such as hand tools, small parts, bit nozzles, pieces of bits or other downhole tools, and remnants of milling operations.
Industry:Oil & gas
Any relatively small quantity (less than 200 bbl) of a special blend of drilling fluid to accomplish a specific task that the regular drilling fluid cannot perform. Examples include high-viscosity pills to help lift cuttings out of a vertical wellbore, freshwater pills to dissolve encroaching salt formations, pipe-freeing pills to destroy filter cake and relieve differential sticking forces and lost circulation material pills to plug a thief zone.
Industry:Oil & gas
Any short piece of pipe, especially if threaded at both ends with male threads.
Industry:Oil & gas
Any threaded or nonthreaded union or joint that connects two tubular components.
Industry:Oil & gas
