1. ThermalDrive™ TECHNOLOGY
BEHIND THE NEXT
GENERATION OF
SUBMERSIBLE PUMP
SYSTEMS

2. GEOTEK ENERGY, LLC
These materials are presented on a confidential basis and may not be used for any
other purpose without the prior written approval of GeoTek Energy LLC. These
materials were developed from information supplied by numerous industry sources
and other research without independent verification by the company.
The accuracy or achievability of any valuations, projections, estimates or
assumptions, all of which may be preliminary, are presented without warranty and
subject to further analysis or discussion.
Actual results may vary from such valuations, projections, estimates and
assumptions, and such variations may be material.
GEOTEK ENERGY LLC, 6170 RESEARCH RD, SUITE 217, FRISCO, TX, 75033
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3. GEOTEK’S BUSINESS
APPLYING RENEWABLE TECHNOLOGY TO HYDROCARBON PRODUCTION
• GeoTek is finalizing development of a unique, highly efficient
geothermal-based technology, called ThermalDriveTM
• ThermalDriveTM is a motor driven by thermal energy and replaces an
electric motor that powers a submersible pump system
• Primarily focused on sales/licensing within the oil & gas (O&G) industry
serving on shore and offshore applications
• Secondary focus on sales /licensing within geothermal power industry,
especially EGS
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4. GEOTEK’S TECHNOLOGY APPROACH
• Based on the thermodynamic cycle and performing work as defined by the Carnot cycle, GeoTek’s
patented and patent pending technology is an innovative application of the geothermal binary cycle
(Organic Rankin Cycle) which uses a working fluid to change heat to energy to work.
• Derived from GeoTek’s patented gravity head energy system (GHES), it is a geothermal production
technology that minimizes or eliminates parasitic loads (& electric costs) associated with pumping of
production wells and the secondary working fluid (also eliminates problematic electrical components)
• The technology includes three GeoTek innovations: a gravity driven thermo-syphon loop for the
working fluid; a downhole expander / pump system to perform work; and, performance evaluation /
well design software
• GeoTek’s thermo-syphon loop relies on gravity to circulate the working fluid (as it gains heat [energy]
from the produced fluid) from the surface equipment to the downhole pump without the use of
electrically driven pumps
• GeoTek’s system uses energy from the working fluid to power the expander, called ThermalDriveTM,
which drives the pump and moves the well’s produced fluid. This also eliminates the need for an
electric driven pump
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5. TECHNOLOGY BASICS
CARNOT ENGINE – HEAT TO WORK
• To pump fluid from a well using geothermal energy
requires a heat engine – a mechanism that changes
heat (energy) to work.
• Geotek’s thermal motor, the ThermalDrive, is a
Carnot (heat) engine
• A working fluid, following the Carnot cycle shown to
the right, gains heat from the produced fluid as it
travels down into the well
• Arriving at the ThermalDrive as a supercritical fluid, it
enters, expanding into a lighter vapor and giving up
the heat (energy) during expansion which drives the
pump
• From the ThermalDrive, the vapor now travels up the
well, enters the condenser on the surface, is cooled
to become a liquid, and thenn repeats the cycle
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WF TRAVELS THRU EPU
WF TRAVELS THRU
CONDENSOR
WF TRAVELS UP
TO SURFACE
WF TRAVELS DOWN TO
EPU
Representation of Cycle Only

6. TECHNOLOGY BASICS
THERMO-SYPHON LOOP
• To power standard surface generators, geothermal binary systems use
a refrigerant (working fluid or WF), that is typically moved through the
closed loop system by electric pumps
• In the GeoTek system, during the descent down the well, the working
fluid WF (dark blue) increases in pressure due to gravity and head.
• After passing through the crossover, the WF now under high pressure
flows downward around the produced fluid tubing (center-pink) where
it is heated by the produced fluid being pumped to the surface by the
ThermalDrive pumping unit
• The energy to drive the GeoTek system for power generation or
pumping is derived from the heat in produced fluid (center-pink) that
has been transferred to the WF (lite blue) as it is drawn further down
the well by gravity
• The WF converts into a supercritical fluid as it enters and drives the the
ThermalDrive pump system, pumping the produced fluid to the surface.
Exiting the ThermalDrive as a lighter vapor, the WF travels back to the
surface where it is condensed to a (heavier) liquid which is then again
driven by gravity downward, repeating the loop.
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7. CORE TECHNOLOGY
THYMOTM – THE COMPUTER MODEL
• To ensure the ThermalDrive pump system can reach
its critical efficiency, pump fluid and also generate
power, computer modeling of the well is required
• GeoTek partner, Blade Energy Partners, Frisco, TX,
developed a thermal assurance model that would
utilize more than 50 well variables
• Using Blade’s Thermal Assurance model, Ortloff
Engineers LTD, of Midland, TX, developed a more
rigorous and effective computer model that
accounted for additional design and downhole
operating variables – the model is now called THYMO
• THYMO now does well performance evaluations and
designs with more productivity and accuracy
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Production
zone
Expander
Pump
Production
Fluid
Working Fluid
Crossover
Condenser

8. CORE TECHNOLOGY
THE ThermalDrive
• In GeoTek systems, the turbine component of the
pumping system, called ThermalDriveTM , acts as a
Carnot cycle heat engine.
• Entering the turbine, the super critical working
fluid (wf) expands into a vapor converting heat to
work
• The ThermalDrive, as a heat engine, is a turbine
operating on the same gas expansion principle as a
steam turbine
• The typical turbine uses a simple turbine blade as
shown to the right
• The ThermalDrive, driven by the working fluid, is
coupled to a pump which then pumps the
produced fluid, brine or an oil/water mixture, to
the surface.
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9. CORE TECHNOLOGY
ThermalDriveTM Pumping System
• The ThermalDrive or turbine is magnetically coupled to the
pump as shown to the right
• Unlike the turbine blade on page 9, GeoTek’s ThermalDrive,
shown below left, is mounted circumferentially around and
outside the production tubing
• The ThermalDrive is magnetically coupled through non-
ferrous tubing to the pump shaft shown below right
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10. THE ThermalDrive™ SUBMERSIBLE PUMP
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MAGNETIC COUPLING
Provides separation between
produced fluid & working fluid
PRODUCTION TUBING
TURBO MOTOR
Working fluid in annulus,
compressed by gravity & heated by
production fluid, spins motor
PUMP SECTION
Wireline retrievable through
production tubing
MATING SPLINE
Mates with magnetic coupling
ThermalDrive™
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11. TECHNOLOGY READINESS
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USING NASA’S TRL SYSTEM -
GEOTEK IS CURRENTLY IN THE
TRANSITION PHASE – FROM TRL 4
TO 5 AS PROTOTYPE COMPONENTS
COMPLETE DESIGN AND ARE BEING
READIED FOR IN-FIELD/PILOT
TESTING LATE Q2-15

12. TECHNOLOGY PATENTS
The United States Patent and Trademark Office issued:
• Patent 8,439,105 (issued 2013)
• Patent 8,672,026 (issued 2014)
• Patent Application (filed 2013)
• Patent Application (filed 2014)
• Six Patent Applications in Preparation
• Trademark Applications filed 2014 - ThermalDrive™ and ThymoTM
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13. TECHNOLOGY DEVELOPMENT
• Grant application in 2010 and awarded in 2011 for $2,800,000. (DE-FOA-
0000336)
• Grant Phase 1 (system and component design) was completed and submitted
on 0ctober 23, 2012 and accepted
• DOE authorized the execution of the next phases, 2a / 2b, with a maximum
reimbursement of $2,400,000
• To broaden available market – GeoTek made EPU design changes and
received a project extension to 12/31/14 for resumption of Phase 2
(prototype/field testing) while retaining the Grant Funds
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Dept. of Energy Technology Grant - $2.8 million

14. TECHNOLOGY PARTNERS
• Ortloff Engineers, LTD, Midland, TX – engineering consulting support including the development of Thymo
• Blade Energy Partners, Frisco, TX – developed the first thermal assurance models
• Concepts NREC, White River JCT. NH – design and manufacturer of turbine pumping unit
• Geothermex, Inc, Richmond, CA – research on economic advantages and potential us market for the GHES
power system
• Department of Energy, Geothermal Technology Office
• GeoTek Energy LLC – Technical Advisors
– Dr. Ron Dippipo, Emeritus Professor of Mechnical Engineering, UMASS Dartmouth
– Dr. Jefferson Tester, David Croll Professor of Sustainable Energy, Cornell University
– Jill Haizlip – Principal, Geologica , LLC
– Louis Capuano – Capuano Engineering, Inc.
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