Oil and Gas Terms Beginning with “B” — Page 4

The term ball-operated describes any downhole tool, mechanism, or completion system that is activated by dropping or pumping a ball from surface through the tubing string until it lands on a corresponding tapered seat… Read more →

A ball sealer is a small sphere, typically manufactured from rubber, nylon, or epoxy-coated composite, that is pumped downhole with treatment fluid to mechanically plug individual perforations in a cased wellbore . When… Read more →

Describing a mechanism or system that is actuated by a ball that is dropped or pumped through the tubing string. Once located on a landing seat, the tool mechanism is generally actuated by hydraulic pressure. Read more →

Ballout is the condition that occurs during a hydraulic fracturing or acid stimulation treatment that uses ball sealers for diversion, at the moment when all open perforations capable of accepting treatment fluid have… Read more →

A range of frequencies or wavelengths. Audible frequencies of sound and visible wavelengths of light are examples of bands. In seismic data, band-pass frequencies are within the limits of a specific filter, while… Read more →

A band-limited function is a mathematical function or time series whose spectral energy is confined to a finite range of frequencies, bounded below by a minimum frequency (the low cut or low-end rolloff) and above by a… Read more →

A band-pass filter is a signal-processing operator that transmits frequencies within a defined range, called the passband , while attenuating frequencies that fall below the lower limit or above the upper limit of that… Read more →

A band-reject filter is a signal-processing operator that attenuates a defined range of frequencies, called the stopband , and transmits all frequencies outside that range with minimal change. It is the… Read more →

A function or time series whose Fourier transform is restricted to a finite range of frequencies or wavelengths. Read more →

Frequencies within the acceptable limits of a filter. The term is commonly used as an adjective, as in "band-pass filter," to denote a filter that passes a range of frequencies unaltered while rejecting frequencies… Read more →

Frequencies beyond the limits of a filter. Read more →

What Is Bank Firing in Oil and Gas Completions? Bank firing is a perforating technique in which multiple perforating guns are arranged in a "bank" and detonated simultaneously or in controlled sequence across a defined… Read more →

A barefoot completion is a well completion method in which the producing interval is left as open hole, with no casing , liner, screen, or perforations across the reservoir section. Reservoir fluids flow directly from… Read more →

(noun) A well completion method in which the production interval is left as open hole without casing, liner, or screen across the producing formation. Barefoot completions are typically employed in competent,… Read more →

Barite (barium sulfate, BaSO 4 ) is a dense, naturally occurring mineral used throughout the global oil and gas industry as the primary weighting agent in drilling fluid systems. Its combination of high specific… Read more →

A barite plug is a temporary wellbore isolation barrier formed by pumping a dense, high-solids slurry of barite (barium sulfate, BaSO4) down the drillstring and allowing the heavy particles to settle by gravity into a… Read more →

What Is a Barrel Equivalent in the Oil and Gas Industry? A barrel equivalent, most often called a barrel of oil equivalent (BOE), is a unit of measurement that expresses different hydrocarbon commodities in terms of a… Read more →

What Is a Barrel Pump? Barrel pump (also called a sucker-rod pump or downhole pump ) is a positive-displacement reciprocating pump installed at the bottom of the tubing string in a sucker-rod (beam pump) artificial lift… Read more →

What Is Barrels of Liquid Per Day? Barrels of liquid per day, abbreviated BLPD, is a standard production rate measurement expressing the total volume of liquid hydrocarbons and associated water produced from a well, a… Read more →

Barrels of oil per day (BOPD) is the standard unit of measurement used across the global petroleum industry to express the rate at which crude oil is produced, transported, refined, or consumed over a 24-hour period.… Read more →

What Is Barrels of Water Per Day? Barrels of water per day, universally abbreviated BWPD, is the standard unit used throughout the global oil and gas industry to quantify the volume of water produced alongside oil and… Read more →

(noun) An alternate spelling of barite (BaSO₄), a dense mineral with a specific gravity of approximately 4.2 that is ground to a fine powder and used as a weighting agent in drilling fluids to increase mud density and… Read more →

What Is a Base Log in Oil and Gas? A base log is the original, unprocessed wireline log run in a wellbore during or immediately after drilling. It serves as the primary reference record for formation evaluation,… Read more →

What Is a Base Map in Oil and Gas? A base map in oil and gas is the foundational map layer upon which all other geologic, geophysical, and operational data is plotted. It anchors wellbore locations, seismic survey… Read more →

The base of weathering (BOW) is the subsurface boundary that separates the near-surface low-velocity zone, in which rocks and sediments have been physically, chemically, or biologically broken down, from the… Read more →

What Is a Base Slurry in Well Cementing? A base slurry is the core cement mixture that forms the starting formulation in well cementing design. It consists of Portland-class oilfield cement, mix water, and a minimum set… Read more →

What Is a Base Station in Oil and Gas Operations? A base station in oil and gas operations serves two distinct roles: a fixed, precisely surveyed GNSS (Global Navigation Satellite System) reference point that provides… Read more →

The original survey of a set of surveys covering the same area but acquired over a period of time. In four-dimensional seismic data, it is the first seismic survey, which is then compared to subsequent surveys. Read more →

In petroleum geology, basement refers to the rock sequence below which economically significant hydrocarbon reservoirs are not expected to be found. It typically consists of crystalline igneous or metamorphic rocks of… Read more →

A sedimentary basin is a low-lying region of Earth's crust in which sediments accumulate over geological time, forming the essential architectural setting for petroleum systems. Basins originate through tectonic… Read more →