ABSTRACT
Fann Viscometer: A common viscometer for oil-eld ¤uids. Farmer’s Oil: An older term indicating the mineral owners royalty-based “share” of the oil. This was from a time when natural gas had no value. Farm-In: (1) An outside party paying a concession owner all or a percentage of the drilling costs of a well in order to obtain a working interest in the land or well. (2) When a company acquires an interest in a block by taking over all or part of the nancial commitment for drilling an exploration well. Farm-Out: (1) A concession owner selling a percentage of a lease to an outside operator for drilling a well. (2) Transfer of all or part of the operating rights from a working interest owner to an assignee who assumes all or some of the burden of development in return for an interest in the property. The assignor usually retains an overriding royalty but may retain any type of interest. Farm-Out Agreement: (1) Farm-out agreement is an agreement to assign an interest in acreage in return for drilling or testing operation on that acreage. (2) An agreement between oil companies whereby the owner of a lease who is not interested in drilling at the time agrees to assign the lease or a portion of it to another company that will earn a share of the production by undertaking exploration. Fast Gages: Gages with a high sampling rate. Fast Line (Drilling): End of a braided drilling line afxed to the draw works. Fast Taper: A steep slope. Fatigue: A metal failure based on weakening by ¤exing or cycling. The material often work hardens. Fatigue Strength: The maximum stress that can be sustained for a specied number of cycles without failure. Fault: (1) Is a fracture in the Earth’s crust accompanied by a shifting of one side of the fracture with respect to the other side; the point at which a geological strata “breaks off” or is sheared off by dropping of a section of the strata by settling. (2) Where rock splits or ruptures with associated movement occuring on either side. Fault Plane: The plane or direction along which fault movement has occurred. Fault Trap: (1) Is formed by rock movement along a fault line. (2) A formation that contains oil or gas that is held in place by a displaced, non-permeable rock mass. FBHP: Flowing bottom hole pressure. FBP: Formation breakdown pressure. The pressure at which the fracture initiates. FC: See Fluorocarbon. FCD: Fracture capacity. A comparison of the conductivity of the fracture to the capacity of the formation. FCP: See Final circulating pressure. FCP: See Fracture closure pressure. FCS (Fracturing): Fracture closure stress. FCTA (Brine): The rst crystal to appear. FCV: Formation control valve.
