History
InterOil discovered the Elk-Antelope gas field in Papua New Guinea but never produced from it, selling down to Total and finally to ExxonMobil in 2017 on a price tied to certified resource.
2008-2010: Gas, LNG plans and partners
InterOil's 2007 annual report, filed in May 2008, set three goals: better refinery and downstream profitability, establishing gas reserves, and developing a Papua New Guinea (PNG) liquefied natural gas (LNG) project. It had bought Shell's PNG downstream business in 2007, and the Elk-2 test had not been a commercial success, but Elk-4 had just flowed gas and condensate (a light liquid found with gas) from the Antelope limestone.
In March 2009 InterOil settled all claims with Merrill Lynch over the LNG plant joint venture, took over its interest and issued 652,931 shares. In June 2009 it sold 2,013,815 new shares at US$34.98, raising about US$70.4m gross for the fields, the LNG facility, possible acquisitions and repaying up to US$9m of a credit facility. In December 2009 Antelope-2 flowed 705 million cubic feet of gas a day plus 11,200 barrels of condensate a day, which the company called a world record. PNG's National Executive Council approved the LNG project agreement, aimed at a US$7.0bn two-train plant.
In 2010 Mitsui & Co. signed on to a condensate stripping plant, with a full joint venture in August and options over up to 5% of the fields. InterOil also borrowed US$25m from Clarion Finanz at 10%, pledging a 2.5% field interest. In December, Petroleum Retention License 15 (PRL 15) combined Elk and Antelope into one licence. Buying out minority participants cost 546,507 shares.
2011-2013: Appraisal and the search for a partner
A GLJ report in March 2011 put the best-case contingent gas resource (gas found but not yet proven commercial) at 8.59 trillion cubic feet. The company had no reserves or production. The record for 2011 is thin; drilling at Triceratops-2 began in January 2012.
In 2012 Pacific Rubiales agreed to pay US$116 million for a stake in the Triceratops licence, completing payment in March 2013. PNG suspended a notice to cancel the LNG agreement, and in November cabinet approved the Gulf LNG project while also approving the State buying a further 27.5% of the fields. Antelope-3 found a hydrocarbon column of about 2,301 feet, with a test limited by equipment to 44.8 million cubic feet a day.
In May 2013 exclusive talks began with ExxonMobil, but exclusivity lapsed in August. InterOil took a one-year US$75 million loan from Westpac PNG and Bank South Pacific to keep drilling.
2013-2014: The Total sale and the end of downstream
In December 2013, after a two-year search, InterOil agreed to sell Total a gross 61.3% of PRL 15. Fixed payments were US$613 million at completion, US$112 million at a final investment decision and US$100 million at first cargo, plus payments linked to certified resource above 3.5 trillion cubic feet equivalent. PRL 39, containing Triceratops, was approved the same week.
The sale closed in March 2014 on a smaller scale: Total took a gross 40.1%, InterOil kept 35.5% and received US$401 million. In June it sold the Napa Napa refinery and its fuel network to Puma Energy for US$525.6 million, leaving it upstream and LNG only. Wahoo-1 was suspended in July after hitting high pressures without reaching its target.
2014-2015: Appraisal under Total
Appraisal drilling began, since certified resource would set Total's remaining payments. Raptor-1 and Bobcat-1 yielded discoveries in late 2014. In February 2015 an arbitration panel dismissed claims by Oil Search affiliates to pre-emptive rights over the Total sale, and Total was appointed operator, taking over on 1 August 2015. Antelope-5 tested at a capped rate of about 70 million cubic feet a day. The Wahoo-1 sidetrack was abandoned with no reservoir. Triceratops-3 flowed 17.1 million cubic feet a day. Pacific Exploration & Production withdrew, lifting InterOil's PRL 39 interest to 100%. Liquidity fell from US$541 million in August to US$473 million in November.
2016: Testing and a bidding contest
A second Antelope-5 test averaged 53.3 million cubic feet a day over 14 days. RISC assessed Raptor at 3.6 and Bobcat at 2.4 trillion cubic feet equivalent. By March liquidity was US$252 million, with talks on extending the credit facility.
In May Oil Search agreed to buy InterOil for 8.05 of its shares per share, plus a contingent payment above 6.2 trillion cubic feet equivalent. In June an unnamed bidder emerged; in July it was revealed as ExxonMobil, offering US$45.00 a share in stock plus up to US$26.87 contingent, capped at 10 trillion cubic feet equivalent. Oil Search did not match.
2016-2017: Founder's challenge and the close
More than 80% of votes backed the deal in September, and the Yukon court approved it in October. But founder Phil Mulacek appealed, and in November the Court of Appeal overturned the approval. InterOil formed an independent committee and raised the cap to 11 trillion cubic feet equivalent, lifting maximum value to about US$78.94 a share. In February 2017 more than 91% of votes approved. Antelope-7 reached 2,383 metres without finding the Antelope reservoir.
ExxonMobil completed the acquisition on 23 February 2017. Each share became 0.5459 ExxonMobil shares plus a contingent payment held in escrow until Elk-Antelope is certified, and InterOil was delisted from the NYSE.
Written from the 64 story beats below (2008 to 23 Feb 2017), which come from the company's own announcements and filings.