Author: bomuo

Reserves of oil and gas that are subcategorized as non-producing include shut-in and behind-pipe reserves. Shut-in reserves are expected to be recovered from (1) completion intervals which are open at the time of the estimate, but which have not started producing, (2) wells which were shut-in due to market conditions or pipeline connection conditions, or (3) wells not capable of production for mechanical reasons. Behind-pipe reserves are expected to be recovered from zones in existing wells, which will require additional completion work or future re-completion prior to the start of production

A percentage share of production or the value derived from production without having to incur the costs of drilling and producing, created by the lessor or royalty owner and borne by the lessor or royalty owner out of the lessor royalty. This royalty is paid to nonparticipating interest holders who do not share or participate in bonus or rentals, or a right to explore, or a right to execute oil and gas leases

A non participating interest is an interest in oil and gas that lacks the right to join in the execution of oil and gas leases and the right to develop.  A non participating interest can be either a royalty interest or a mineral interest, with the primary difference being that the latter may share in bonus and delay rental, while the former shares in royalty only. Neither interest has the power to execute an oil and gas lease

Countries that are not members of OPEC and which include the UK, Mexico, Norway, Oman, Kazakhstan and Russia

Such as carbon dioxide, helium, hydrogen sulfide, and nitrogen which are also sometimes found in small quantities in natural gas