So on April 1, 2019 NXT annnounced they will get a $0.300MM USD fee to mobilize their survey aircraft to Nigeria and then conduct a 100km pilot flight over target areas identified by NNPC.  After that, they get $1MM USD if the pilot flight is completed to the satisfaction of the NNPC. So a month later they now say the $1MM has been paid to them (most) AND they have already completed the 5000 km survey. That is outstanding. They must have passed the test.

NXT Receives the Advance Payment on the $8.9 Million SFD® Survey Contract and Completes Data Acquisition

CALGARY, Alberta, May 02, 2019 (GLOBE NEWSWIRE) -- NXT Energy Solutions Inc. (“NXT” or the "Company") (TSX: SFD; OTC QB: NSFDF) is pleased to announce that of the $1.0 Million USD, it has received a $0.9 Million USD advance payment from PE Energy Limited (“PE”) following successful completion of data acquisition and delivery of preliminary interpretation results to the Frontier Exploration Services (“FES”) of the Nigerian National Petroleum Corporation (“NNPC”).  An additional $100,000 USD will be received in the next few days once the international transfer formalities are completed.  PE is the Nigerian oil and gas service company that has the contract with NNPC, to provide 5,000 line kilometers of airborne SFD® Surveys in Nigeria.

NXT has now completed the acquisition of 5,000 line kilometers of SFD® data. The SFD® surveys were conducted over NNPC’s exploration interests in the inland basins of Nigeria.  All flight lines were designed by NNPC/FES.  The final report is expected to be delivered during the third quarter of 2019.

Further payments under the $8.9 Million contract will be made upon completion of each of three (3) project milestones as follows: data acquisition, interpretation and delivery of the final report.

George Liszicasz, President and CEO of NXT, commented, “Africa is still a frontier region for hydrocarbon exploration.  Many African national oil companies want to develop the vast potential that has been neglected for decades to supplement mature declining offshore fields.  The SFD® technology has the potential to deliver significant value to clients in any exploration environment.  I am pleased that we not only completed the surveys required by the contract, but have also acquired nearly 5,000 kilometers of data in record time.  I wish to thank our employees and our partner, PE, for the initial success of this SFD® Survey.”

https://web.tmxmoney.com/article.php?newsid=6423553083993075&qm_symbol=SFD