For the purposes of this Act, if:
(a) a petroleum pool is:
(i) partly in a production licence area; and
(ii) partly in another area (whether in the offshore area or not) in relation to which another person has authority (whether under this Act or under the law of a State or the Northern Territory) to explore for or recover petroleum; and
(b) a unit development agreement in accordance with section 163 is in force between the licensee and that other person; and
(c) petroleum is recovered from that pool through a well or wells in the licence area, the other area or both;
there is taken to have been recovered in that licence area such proportion of all petroleum so recovered as is specified in, or determined in accordance with, the agreement.