Any operation on any portion of the unit area, including, but not limited to, the drilling or operation of a well, is considered for all purposes the conduct of the same operation on the whole unit area. The portion of unit production allocated to a separately owned tract in a unit area is considered for all purposes to actually have been produced from a well drilled upon that tract. An operation conducted pursuant to a board rule adopted or order issued under ORS 522.405 constitutes a fulfillment of all express or implied obligations under each lease or contract covering lands in the unit area. [1981 c. 588 §17]
Oregon Legal Code