05.07.2009

An indication of oil or gas observed and recorded during the drilling of a well

Sediment is loose, hard material lying on top of solid rock. Sediment comes in many forms and sizes, and can originate from a variety of sources and is usually material deposited by water, wind or glaciers

Tank filled with drilling mud that is not circulated. By having mud slowly pass through such a container, most large drilling solids sink to the bottom, cleaning the mud somewhat.

A wellbore segment extending from a wellbore intersection along a wellbore path to a different wellbore bottomhole from any previously existing wellbore bottomholes

Data acquired by the use of an explosive sound source and a geophones or hydrophones (offshore) to detect sound waves reflected from the underlying rock strata

Consists of an in-depth assessment process of an LNG ship in order to determine if it is suitable for gas transportation and unloading LNG

Such as hydrocarbons that are in a semisolid state

The amount of gas used by a pipeline and the lost and unaccounted for supply, both of which are a function of moving gas for a shipper

A depression in the crust of the Earth formed by plate tectonic activity in which sediments accumulate

The five US firms: Exxon (Esso), Gulf, Texaco, Mobil, Chevron (Socal); two UK firms: Shell and BP and one French firm CFP-Total