05.07.2009
The total length of a term of a supply contract between a buyer of gas and seller.
The depth in a drilling well at which the drilling contractor receives a lump-sum payment for reaching a particular milestone. The contract depth is specified in a legal agreement between the operator, who pays for the well, and the drilling contractor, who owns and operates the drilling rig. Contract depth may be the final or total depth (TD) of the well, an intermediate point in the well or another milestone, such as running well-logging tools to the bottom of the hole.
A line on a map that traces locations where the value of a variable is constant. For example, contour lines of elevation trace points of equal elevation across the map. All points on the “ten foot” contour line are ten feet above sea level
A petroleum accumulation that is pervasive throughout a large area and which is not significantly affected by hydrodynamic influences. Examples of such deposits include “basin-center” gas and gas hydrate accumulations
Those quantities of petroleum which are estimated, on a given date, to be potentially recoverable from known accumulations but which are not considered to be commercially recoverable due to one or more contingencies which may include factors such as economic, legal, environmental, political, commercial, regulatory matters or a lack of markets. It is also appropriate to classify as contingent resources the estimated discovered recoverable quantities associated with a project in the early evaluation stage. Contingent resources are further classified in accordance with the level of certainty associated with the estimates and may be subclassified based on project maturity and/or characterized by their economic status
Development and production of recoverable quantities of hydrocarbons has not been justified, due to conditions that may or may not be fulfilled.