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Oil & gas
Terms concerning oil and gas as a fossil fuel and natural resource.
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Oil & gas > Drilling 
formaldehyde
Oil & gas; Drilling
The simplest aldehyde, having the formula HCHO. Formaldehyde is used in aqueous solutions as a preservative. In muds, paraformaldehyde is added to protect against bacterial ...
gel strength
Oil & gas; Drilling
The shear stress measured at low shear rate after a mud has set quiescently for a period of time (10 seconds and 10 minutes in the standard API procedure, although measurements ...
kilogram per cubic meter
Oil & gas; Drilling
The SI unit of measurement for density. Mud weights are typically expressed in kg/m 3 . The conversion factor from lbm/gal to kg/m 3 is 120. For example, 12 lbm/gal = 1440 ...
Christmas tree
Oil & gas; Drilling
The set of valves, spools and fittings connected to the top of a well to direct and control the flow of formation fluids from the well.
traveling block
Oil & gas; Drilling
The set of sheaves that move up and down in the derrick. The wire rope threaded through them is threaded (or "reeved") back to the stationary crown blocks located on the top of ...
bottoms-up
Oil & gas; Drilling
The sample obtained at the bottoms-up time or a volume of fluid to pump, as in "pump bottoms-up before drilling ahead. "
Sub-categories
- corrosion inhibition (0)
- Downhole (49)
- Drilling (9514)
- Environmental management (93)
- Fuel handling (16)
- Horizontal directional drilling (7)
- Offshore oil exploration (2047)
- Oil (4406)
- Oil & gas instrumentation (856)
- Oilfield (22159)
- Pipeline related (90)