All operations, including but not limited to, the commencement, drilling or operation of a well upon any portion of the unit area shall be deemed for all purposes the conduct of such operations upon each separately owned tract in the unit area by the several owners thereof. The portions of the unit production allocated to a separately owned tract in a unit area shall, when produced, be deemed, for all purposes, to have been actually produced from such tract by a well drilled thereon. Operations conducted pursuant to an order of the division providing for unit operations shall constitute a fulfillment of all the express or implied obligations for each lease or contract covering lands in the unit area to the extent that compliance with such obligations cannot be had because of the order of the division.