Mud Pots and Mud Pools Depressions filled with hot bubbling mud commonly associated with steaming ground. The mud is...

MWD Refers to Measurement While Drilling which for directional drilling includes geospatial information that is used...

Numerical Modeling Application of computational methods to solve complex problems that predict the behavior or the...

Normal Fault High angle fault that results from extensional stress and forms a steeply dipping planar structure. Slip...

Packers and Plugs Downhole devices emplaced into a well to seal zones and intervals so they can be pressurized by...

PDC Drill Bit Polycrystalline diamond compact drill bits have been long used in oil and gas drilling, and only...

Peak Load Generation The amount of power required to maintain an electric grid for short-lived periods (e.g., morning,...

Perforation The process of punching holes through the steel casing liner in a well in order to inject fluid into or...

Piezometric Surface The imaginary surface to which groundwater rises under hydrostatic pressure in wells or...

Proppant Sand-sized solid grains that are injected in a fluid suspension and used to hold open stimulated fractures in...

Propylitic Alteration A term borrowed from studies of hydrothermal ore deposits that refers to an assemblage of...

Rhyolite Light colored fined grained volcanic rock composed of glass, quartz, K-feldspar and plagioclase, with...