دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a chemical additive that reduces the setting time of cement. See cement, cementing materials.

n: A downhole tool used in conjunction with a jar to store energy that is released suddenly when the jar operates.

an energy increasing device, with sudden energy release, used in a jarring string while fishing.

land leased for drilling exploration.

n: 1. a hand tool that is powered pneumatically. 2. a chamber filled with compressed air, often used offshore in seismic exploration. As the gun is trailed behind a boat, air is released, making a low frequency popping noise, which penetrates the subsurface rock layers and is reflected by the layers. Sensitive hydrophones receive the reflections and transmit them to recording equipment on the boat.

seismic source for ocean seismic work.

n: the distribution of oil or gas produced from a well per unit of time. In a state using proration, this figure is established monthly by its conservation agency.

the process of determining ownership of hydrocarbons delivered to the meter or LACT unit on a lease.

n: the date, usually one year from the effective date of the lease, by which rentals must be paid to maintain the lease in effect in the absence of drilling or production.

n: an area, usually outlined on a plat attached to a farmout agreement or described in an exhibit, that allows both parties the first right of refusal on leases acquired by either party after the agreement is executed.

n: a transfer of rights and interests in real or personal property or rights under a contract-for example, the transfer of an oil and gas lease from the original lessee to another party.

n: an estimate of costs prepared by a lease operator and sent to each non operator with a working interest for approval before work is under taken. Normally used in connection with well-drilling operations.

n: A document signed by management that authorizes funds to be spent against an approved budget.