16. Where the position of any boundary of a grid area, permit area, lease area, section or unit or the position of a well has been established by a legal survey approved by the Surveyor General pursuant to these Regulations, the position of that boundary or well so established shall be deemed to be the true position thereof, notwithstanding that the boundary or well is found not to be located in the position required by these Regulations and shall determine the position of all other sections or units that lie within the grid area.

• 17. (1) Where, owing lo a discordance of reference points or imprecisions in measuring, a subsequently surveyed grid area, section or unit appears to overlap a grid area, section or unit the position of which is deemed to be true by section 16, the subsequently surveyed grid area, section or unit shall be laid out and surveyed as though no overlap existed except that it shall be reduced by that portion that lies within the overlap.

• (2) Subject to subsection (1), a grid area that has been reduced pursuant to subsection (1) shall, for the purpose of these Regulations, be considered to be a whole grid area.

• (3) Where, owing to a discordance of reference points or imprecisions in measuring, a parcel of Canada lands appears not to lie within a grid area, that parcel may be disposed of pursuant to subsection 30(7) or section 57.

18. Every licensee, permittee, holder or lessee shall, before drilling an exploratory well offshore, send to the Oil Conservation Engineer three prints of a tentative plan showing the locations of the proposed drilling and a description of the system and method of positioning the well.

• 19. (1) Every permittee, holder or lessee shall, before the suspension or abandonment of any exploratory well, send to the Oil Conservation Engineer a plan that clearly shows the surveyed position of that well relative to

  • (a) a reference point referred to in section 14; or

  • (b) a topographical feature that is identifiable on

    • (i) a map that has been published by or on behalf of the Government Of Canada within three years immediately preceding the date on which the plan is submitted, or

    • (ii) a vertical aerial photograph, of mapping standard, obtained from the National Air Photo Library or from such other source as may be acceptable to the Surveyor General.

• (2) Where an aerial photograph is used pursuant to paragraph (1)(b), that photograph shall be sent to the Oil Conservation Engineer together with the plan.

• (3) A permittee, lessee or holder may, in lieu of the plan referred to in subsection (1), send to the Oil Conservation Engineer the aerial photograph referred to in subparagraph (1)(b)(ii) on which the surface position of the exploratory well has been clearly marked in a manner acceptable to the Surveyor General, after the position thereof has been determined by a field comparison between the site and the photograph.

• (4) Where a suspended or abandoned exploratory well is offshore, the electrical centres and other shore stations from which the position of the well was determined shall be permanently marked and the plan referred to in subsection (1) shall be accompanied by a report on the survey system describing all assumed parameters of the survey system and the shore station markings.