Pipe cemented in the well to seal off formation fluids and to prevent the hole from caving in.
The steel tubing that lines a well after it has been drilled. It is created from sections of steel tube screwed together.
A range of exploration drilling scenarios from which the following activity levels, based on recent historical experience, are adopted as the central estimates.
An additional meter installed at the well site in order to “check” the main meter.
The assembly of fittings and valves on the top of the casing which control the production rate of oil.
Colorado Oil and Gas Conservation Commission
Colorado Oil and Gas Information Systems
An oil and/or gas field judged to be capable of producing enough net income to make it worth developing.
The installation of permanent wellhead equipment for the production of oil and gas.
Hydrocarbons which are in the gaseous state under reservoir conditions and which become liquid when temperature or pressure is reduced. A mixture of pentanes and higher hydrocarbons.
Taking rock samples from a well by means of a special tool — a “core barrel”.
A large barge, capable of lifting heavy equipment onto offshore platforms. Also known as a “derrick barge”.
One of the two calculation methodologies allowed by the IRS for calculating the depletion allowance on oil and gas royalty revenue. The other methodology is called percentage depletion
Liquid petroleum as it comes out of the ground as distinguished from refined oils manufactured out of it.
A standard unit used to measure quantity of gas (at atmospheric pressure); 1 cubic foot = 0.0283 cubic meters.
Rock chips cut from the formation by the drill bit, and brought to the surface with the mud. Used by geologists to obtain formation data.
The process that clears a title or straightens out any defects in the title chain.