estimated proved reserves and pilot plants

FYI:

Proved oil reserves are the estimated quantities of crude oil that geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating
conditions; i.e., prices and costs as of the date the estimate is made. Prices include consideration of changes in existing prices provided only by contractual
arrangement, but not on escalations based on future condition.

Proved developed oil reserves are reserves that can be expected to be recovered through existing wells with existing equipment and operating methods. Additional
oil expected to be obtained through the application of fluid injection or other improved recovery techniques for supplementing the natural forces and mechanisms
of primary recovery are included as "proved developed reserves" only after testing by a pilot project or after the operation of an installed program has confirmed through production response that increased recovery will be achieved.