Shale Tech International Services, LLC. Share: Oil & Gas Producers & Industry Services Shale Tech International Services, LLC. Visit Website 1354 County Road 246 Rifle, CO 81650 (970) 625-3193 (970) 625-9898 (fax) About Map About Private research facility undertaking research & development work relating to coverting oil shale into liquids. What's Nearby? Distance: 5 10 15 20 25 50 mi.