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

An underground rockformation from which oil, gas or water is produced. Any porous rock will contain fluids of some sort, and all rocks at considerable distance below the Earth's surface will initially be under pressure,… Read more →

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

A measure of the efficiency of seismic acquisition. Production can be expressed in terms of the number of lines, shots or lengths (km or miles) of data acquired in a given time. 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 →

A device used to isolate the annulus and anchor or secure the bottom of the production tubing string. A range of production packer designs is available to suit the wellbore geometry and production characteristics of the… Read more →

A portion of proceeds from production, specified by contract, and payable to the lessor or farmor, or host country until total payment has reached a predetermined limit specified by contract. 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 flow period before a buildup. The duration of the production period should be specified in the test design to assure that a stable flow situation is reached, and that the pressure disturbance has reached far enough… 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 →

An agreement between the parties to a well and a host country regarding the percentage of production each party will receive after the participating parties have recovered a specified amount of costs and expenses. Read more →

The primary conduit through which reservoir fluids are produced to surface. The production string is typically assembled with tubing and completion components in a configuration that suits the wellbore conditions and… 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 portion of a Christmas tree or surface production facility through which production fluids flow. The production wing typically includes a wing valve and a choke to control or isolate flow from the wellbore. Read more →

A mathematical means of expressing the ability of a reservoir to deliver fluids to the wellbore. The PI is usually stated as the volume delivered per psi of drawdown at the sandface (bbl/d/psi). 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 →

To measure the lateral variation of a property, such as gravity or magnetic fields. Probing, in contrast, is the term used to describe the measurement of vertical variations of a property in electromagnetic and other… Read more →

The process of controlling undesirable water production from a well by conducting treatments to prevent coning or cresting. A range of treatment options is available for profile modification applications, most of which… Read more →

A procedure that involves sampling gas and liquid at different points across the diameter of pipe to evaluate the degree of stratification at a specific location. Read more →

The amount of production, after deducting cost oil production allocated to costs and expenses, that will be divided between the participating parties and the host government under the production sharing contract. Read more →

The accumulation of sequences by deposition in which beds are deposited successively basinward because sediment supply exceeds accommodation. Thus, the position of the shoreline migrates into the basin during episodes… Read more →

A type of a sucker rod-pumping unit that uses a rotor and a stator. The rotation of the rods by means of an electric motor at surface causes the fluid contained in a cavity to flow upward. It is also called a rotary… Read more →

The situation in which 10-second and 10-minute gel strengths for a drilling mud have dissimilar values, with the 10-minute number being much higher than the 10-second number. This indicates that the gelation of the mud… Read more →

A property of a sinusoidal plane wave equal to twice pi divided by the wavelength. Also known as the wavenumber, the propagation constant is fundamental to the mathematical representation of wavefields. It is the… Read more →

A measurements-while-drilling log of formation resistivity. The log normally contains at least one attenuation and one phase-shift resistivity reading. In many cases there will be multiple curves of both, the difference… Read more →

A measurement of the formation resistivity made on drillpipe at a frequency in the range of 100 kHz to 10 GHz, most commonly 2 MHz. The basic measurement is accomplished using a transmitter and two receivers. At these… Read more →

Sized particles mixed with fracturing fluid to hold fractures open after a hydraulic fracturing treatment. In addition to naturally occurring sand grains, man-made or specially engineered proppants, such as resin-coated… Read more →

A solvent used with water to break the emulsion of an oil-base or synthetic-base drilling fluid to prepare the sample for chemical titrations to determine lime, calcium or chloride content according to API testing… Read more →

A well in which the maximum production rate is fixed by law. These laws were developed by producing states primarily to control the market and avoid periodic price collapses. Read more →