Natural gas deliveries for the account of others are deliveries to customers by transporters that do not own the natural gas but deliver it for others for a fee. Included are quantities covered by long term contracts and quantities involved in short-term or spot market sales
The costs associated with abandoning a well or production facility. Such costs are specified in the authority for expenditure (AFE), and typically cover the plugging of wells, the removal of well equipment, production tanks and associated installations as well as surface remediation
The pressure at which a reservoir was or is expected to be abandoned
The 15-Day Brent crude oil market is so-called because a seller must give a buyer a minimum 15 days notice of the intended loading dates for a cargo of Brent Blend North Sea crude oil in any particular month traded. 15-Day Brent is traded in discreet months. At the point where the buyer—who may be at the end of a long trading chain—is informed of the loading dates, the cargo becomes a so-called Dated Brent cargo.
The Dated Brent price is a benchmark assessment (Platts’) of the price of physical light North Sea crude oil. It refers to the physical cargoes of crude oil in the North Sea that have been assigned specific delivery dates. This is the typical crude oil price reference value
Pressure exceeding or falling below the normal pressure to be expected at a given depth. Normal pressure increases approximately 0.465 psi per foot of depth. Thus, normal pressure at 10,000 feet is 4,650 psi
A well no longer in use
Contrary to the term, the science of geochronology to measure the age of rocks, minerals and fossils, in years before the present, is an inaccurate science. The measurement of the decay of radioactive isotopes, especially uranium, strontium, rubidium, argon and carbon, has allowed geologists to more precisely determine the age of rock formations. Tree rings and seasonal sedimentary deposits called verves can be counted to determine absolute age
The aim of abandonment is to safely and economically remove the installed facilities at the end of field producing life, in order to comply with national laws, international conventions and company policy. The key stages include: deciding when to cease production which is based on economic limits with the help of the reservoir model and as agreed by government and partners, plugging of wells, removal of well equipment, production tanks and associated installations; and surface remediation. Regulations regarding abandonment deal with both the removal of installations (primarily concerned with safely of navigation and other users of the sea) and disposal (primarily aimed at pollution prevention).
The maximum flow rate a well could theoretically deliver with zero pressure at the middle of the perforations
