Development

Drilling and related activities necessary to bring a field into production following a discovery. The aim of the development is to safely and economically install the appropriate facilities in order to optimally produce the hydrocarbon reserves in the field. The key stages include: drilling development wells; installing well production equipment (completions); installing the surface facilities …

Dew point measurement in natural gas; Moisture and hydrocarbon dew point in natural gas

Moisture and hydrocarbon dew point are not easy parameters to measure, due to numerous factors including gas composition, contaminants, additives, high pressures, presence of corrosive compounds and other factors. It is an important measurement however since any moisture contained in the gas does not burn, it reduces the effective calorific value of the gas and …

Dew point, dewpoint; Dewpoint control equipment

When gas is transported long distances in pipelines, consideration must be given to the control of the formation of hydrocarbon liquids in the pipelines. To prevent formation of said hydrocarbon liquids, it is necessary to control the hydrocarbon dewpoint at a temperature below all conceivable operating temperatures. Hydrocarbon dewpoint is the temperature, at a given …

Dewatering; Solids water separation; Solids separation equipment

The process of removing water from water-base drilling mud within a gas field. The best case is when one dewaters a well they don’t recharge with water. Pipelines also undergo a dewatering process. After the lines are laid on the seabed and filled with water to allow them to be hydro-tested, the water is then …

Diatom, diatomaceous

A microscopic single-celled algae with a silica-rich cell wall. Diatoms can be so abundant that they can form thick layers of sediment from the organisms that died and sank to the bottom of the sea and have become an important component of deep-sea deposits since cretaceous time

Diesel engine

High-compression, internal-combustion engine used extensively for powering drilling rigs. In a diesel engine, air is drawn into the cylinders and compressed to very high pressures; ignition occurs as fuel is injected into the compressed and heated air. Combustion takes place within the cylinder above the piston, and expansion of the combustion products imparts power to …

Delivered

Often regarded as synonymous with cost, insurance, and freight in the international cargo trade, its terms differ from the latter in a number of ways. Generally, the seller’s risks are greater in a delivered transaction because the buyer pays on the basis of landed quality/quantity. Risk and title are borne by the seller until such …