Oil and Gas Terms Beginning with “P” — Page 10

A producing formation is the specific geological unit — identified by its stratigraphic name, formation designation, or field-specific nomenclature — from which hydrocarbons are actively being recovered by a producing… Read more →

A well producing fluids (gas, oil or water). Read more →

In seismic acquisition, production is a measure of the efficiency of a survey crew, expressed as the volume of data physically recorded in a given period of time. It is the field-operations sense of the word, distinct… Read more →

Payment by a well operator to a host country upon achievement of certain levels of production. Read more →

A casing string that is set across the reservoir interval and within which the primary completion components are installed. Read more →

What Is a Production Log? A production log records one or more in-situ measurements that describe the nature and behaviour of fluids in or around the wellbore during active production or injection, enabling engineers… Read more →

What Is a Production Packer? A production packer is a downhole tool that seals the gap between the inside of the casing and the outside of the production tubing , locking off the annulus so oil and gas can only flow up… Read more →

A production payment is a nonoperating, cost-free interest carved out of an oil and gas property that entitles its holder to a defined share of production, or the proceeds from that production, until a predetermined… Read more →

A fine paid to the host country for failure to attain specified production rates over a defined period of time. Read more →

The production period in oil and gas field development refers to the span of time from the first commercial hydrocarbon production from a field or well to the point at which production rates decline below the economic… Read more →

An agreement between the parties to a well or wells and a host country to utilize specified goods and services from that country. Read more →

A production sharing contract, abbreviated PSC and sometimes called a production sharing agreement or PSA, is the dominant petroleum fiscal regime used by host governments outside North America to grant exploration and… Read more →

A production string is the tubing string installed inside the production casing as the permanent conduit through which reservoir fluids (oil, gas, water, and their mixtures) flow from the perforated interval at the… Read more →

What Is Production Tubing? Production tubing is the steel pipe string installed inside the production casing of a completed well to serve as the primary conduit for conveying reservoir fluids, including oil, gas,… Read more →

The production wing is the horizontal arm of a Christmas tree or surface wellhead assembly through which produced reservoir fluids leave the wellbore and enter the surface flowline, and it is the controlled outlet that… Read more →

The productivity index, abbreviated PI and often written J in reservoir-engineering texts, is a mathematical means of expressing the ability of a reservoir to deliver fluids to the wellbore. It is defined as the… Read more →

(noun) A well test conducted to measure the flow capacity of a producing well by recording the stabilised flow rate at one or more controlled drawdown pressures. Results are used to calculate the productivity index… Read more →

In geophysics, to profile means to measure how a property changes along a line on the surface or down a borehole. A gravity profile records gravity readings at stations spaced along a road or a survey line. A magnetic… Read more →

Profile modification is a class of well treatment operations designed to control undesirable water production from oil or gas wells by altering the relative permeability profile or injection profile across the producing… Read more →

Profile testing is a measurement procedure in which gas and liquid are sampled at several points across the diameter of a pipe in order to characterize how the two phases are distributed within the cross-section, and so… Read more →

Profit oil is the share of petroleum production that remains under a production sharing contract once royalties have been paid to the host government and a portion of output, the cost oil , has been allocated to the… Read more →

Progradation in sedimentary geology is the basinward (seaward or lakeward) advance of a depositional system -- such as a delta, carbonate reef, shoreface, or fan -- when the rate of sediment supply to the depositional… Read more →

A progressive cavity pumping system (PCP) is an artificial lift method that moves fluid by rotating a helical metal rotor inside a rubber-lined helical stator. As the rotor spins inside the stator, a series of sealed… Read more →

Progressive gels in drilling fluid rheology refers to a specific operational situation in which the 10-second and 10-minute gel strength measurements for a drilling mud have substantially dissimilar values, with the… Read more →

The propagation constant in seismic and electromagnetic wave theory is a fundamental wave property equal to 2π divided by the wavelength (k = 2π/λ), also known as the wavenumber, that expresses how rapidly the phase of… Read more →

What Is Propagation Resistivity? Propagation resistivity is an electromagnetic logging-while-drilling measurement that determines formation resistivity by transmitting microwave-frequency electromagnetic waves into the… Read more →

Propagation resistivity measurement is a logging-while-drilling (LWD) formation evaluation technique in which electromagnetic waves at frequencies of 400 kHz to 2 MHz are transmitted from an antenna on the drill collar… Read more →

Proppant is the granular solid material — sand, resin-coated sand, or engineered ceramic particles — pumped into a hydraulic fracture during well stimulation to hold the fracture open against the enormous compressive… Read more →

Propylene glycol normal propyl ether (PGNPE, also written as propylene glycol n-propyl ether or 1-propoxy-2-propanol) is a glycol ether solvent belonging to the propylene glycol ether family that is used in oilfield… Read more →

A prorated well is a well whose maximum lawful production rate is fixed by a regulatory authority rather than by the operator's commercial preference or the well's deliverability alone. The limit is called an allowable,… Read more →