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op SectionBig-rigUnforeseen delay in top sectionActualDelays with the big-rigare expensive owing tothe high day ratePlannedGeothermal drilling is notoriously challenging in the top section of wells: the Predator canvastly reduce expenditure for developers if problems are encountered during drilling.De-risking geothermal drilling: the mixed fleet approach November 20208
Costs of Well Abandonment at 650 m Sub-surface issues may arise whendrilling in volcanic environments. Well abandonment may be the mostrational decision. The Predator makes well abandonmenta more viable option. Owing to the Predator’s manoeuvrability,rig moves are quick and cheap. Top-holing with the Predator enableswell abandonment, at a fraction of thecost of a big-rig: 700k cheaper than a budgetoperator 1.1m saving with a premiumoperatorBudget operator day rate: 21,700P Predator; BR Big-rigDe-risking geothermal drilling: the mixed fleet approach November 2020Premium operator day rate: 40,0009
Save Money with a Mixed Fleet Approach: Well Abandonment3 well campaign (plus 1 failed well)Budget big-rig operatorPremium big-rig operatorIn a 3 well campaign with 3successful wells, and 1abandoned well at 650 m: The mixed fleetapproach is considerablycheaper as any topsection drillingchallenges are borne bythe Predator. Any delays are reducedas the Predator canrapidly move followingabandonment andprepare another topsection for the big-rig.Budget operator day rate: 21,700Premium operator day rate: 40,000P Predator; BR Big-rigDe-risking geothermal drilling: the mixed fleet approach November 202010
Atlas Copco Predator: SpecificationsCarrier mounted drilling rig:› Cat C-27 950HP engine› Fuller RT0F-1408LL 8 speed transmission› 500HP hydraulic drive motor› Telescoping hydraulic mast; maximum hook load of 200,000lbs and50,000lbs pullback› Tip out two speed top drive rotary head; 30,000 ft lbs rotary torquePredator substructure support system:› Maximum working load of 200,000lbs, 42” maximum floor opening(with brushing removed), 27.5” table opening and 17.5” slipbushing› Floor with 10’ x 24’ working area› 4.2 ton wirelessly operated hydraulic crane provided for liftingtooling onto rig floor› 3000psi air/mud piping, oilfield lighting package, offboard generatorconnection, self contained driller’s console with military grade flatscreen monitor, easy access hydraulic valve bank, catwalks,stairways, fold up rig floor all contained on an oilfield skid systemPredator hands free pipe handling system:› Capable of handling 4.5” to 24” diameter pipe or casing rangingfrom 30’ to 46’ in length with a maximum lifting capacity of 8000lb› Pipe skate operated by wireless controller› Package contained on an oilfield skidding systemDe-risking geothermal drilling: the mixed fleet approach November 2020Source: Atlas Copco/EpirocYear of construction2012Place of constructionGarland, Texas USARig operating hours5,032Nominal drilling depth8,000 – 10,000 ftRig package equipmentloads14 ( 1 self driving)Further details available on request11
Equipment photosDe-risking geothermal drilling: the mixed fleet approach November 202012
Other drilling opportunities for the PredatorAlongside drilling operations for geothermal power projects, the Predatoris well suited to numerous other sectors, either as a standalone drillingpackage or as part of a mixed-fleet approach: CO2 sequestrationConventional oil & gasGeothermal direct heat drillingHydrogen production and storageMineral explorationMineral extraction from geothermal brines (e.g. lithium)Shale gasUnconventional horizontal targetsDe-risking geothermal drilling: the mixed fleet approach November 202013
ContactTom ElliottProject Managerte@cluffgeothermal.com 44 (0) 7807495639London OfficeSyon HouseLondon RoadBrentford, TW8 8JFUnited Kingdom
The Predator is the ideal top holing rig for geothermal drilling. With a maximum hook load of 91 tonnes, it can drill with a 12 ¼" bit to 1,000 m, and fulfil the directional component of the well. Predator Big-rig Set anchor casing Set production casing Set surface casing De-risking geothermal drilling: the mixed fleet approach November 2020
