Here's my story:
Contact across the Solar System at wattpad.com
It's basically a rationalization of George Adamski's UFO-contactee notions, but I touch on oil-related themes along the way.
The two [Kalna and Ilmuth around 1967] also discovered in the LA area a lot of weird machines. They looked like seesaws continually rocking back and forth, with one end connected with bars to an engine or a motor and with the other end connected to some cables going into the ground. Not long after the two arrived, Ilmuth asked what they were, and she found out that those were oil pumps for pumping crude oil out of the ground. So LA was built on top of a big oil field.
Her fellow Earth resident Kalna then sits in on a petroleum geologist who discussed future oil supplies. She then quizzes him on what to do as oil runs out. The 1970's oil shocks were something that this professor didn't think of -- economic warfare -- and she wondered if a shooting war was next. Indeed it was, in 1992 and 2003.
Later in the story, Kalna and Ilmuth and their fellow Solar-System-Community members decide to reveal themselves to us Earthlings, and as that happens, Saudi Arabia splits up in a very nasty civil war.
The SSC people give a lot of manufacturing recipes to the Russian Academy of Sciences in exchange for a big pile of data on the Tunguska explosion, though some of the academicians find those recipes rather difficult to work with.
Then in a visit to Switzerland, the SSC people go beyond recipes to gifts:
"Solar cells ... batteries and supercapacitors ... electrodes for electrolytic cells and fuel cells ... catalyst packs for synthetic-fuel production ..."
Then they went back to the podium and President Winkler went up to it announced that "this is the dawn of a new era, an era of energy freedom, an era of energy sustainability, an era of energy self-sufficiency. We have been building for it for some time, but we thank our SSC guests for helping us get there faster. No longer will we have to get energy from distant parts of the world. No longer will our energy be dependent on the whims of distant politicians. No longer will our energy be vulnerable to its owners fighting over it. No longer will our energy support corruption and autocracy and terrorism and extremism. No longer will we worry about our energy running out."