Inverted Motors for Drilling

Basic Concepts and Design

US and International Patented and Patent Pendings

Ken OglesbyImpact Technologies LLC

PO Box 35505 Tulsa, OK 74153kdo@impact2u.com

Inverted Motors for DrillingBasic Configuration Differences

– Conventional Motor Configuration Housing connected to drillstring and does not rotate

(connected to motor stator) Shaft internal to housing and rotates (connected to motor

rotor). Drilling tool attached to shaft. Fluid flow goes through motor and crosses over into shaft

channel before existing Electrical wires cannot go through motor

– Basic Inverted Motor Configuration Shaft connected to drillstring and does not rotating (connected

to motor stator) Housing rotates (connected to motor rotor) with tool attached Shaft has channels for flow and wires Fluid and wires can enter motor at any point- or not at all

IMBasic Inverted Motor Configuration

Inverted Motors for DrillingBenefits of IM Configuration

Allows use of advanced drilling techniques

Ultra high pressure / Abrasives / Acids/ bases

MWD (key drilling and directional measurements) and LWD (formation logging measurements) tools in/ at bit

Multiple motors (different sizes and rotation direction) on BHA/ drillstring

Short lengths of each motor allows ultra-short radius turns

Inverted Motor for DrillingVarious Types of Inverted Motors

Gerotor Concentric

Gerotor Eccentric

Moineau Concentric

Moineau Eccentric

Roller Vane Concentric

Roller/Wing Concentric

Turbine Concentric

Electric Concentric

Piston Others Concentric

Inverted Motors for DrillingChannel(s) in Shaft of IM Motor

Fluid/Gas Flow Ultra High Hydraulic Pressure

Electrical WiresOptical Wires

for uses in

Hydraulic/Abrasive/Dir Jetting

MWD / LWD(near-bit or in-bit)

Improved Hole Cleaning

Multiple Motors

Inverted Motors for DrillingOther IM Uses

Proven Advanced Technology usesHigh Pressure Hydraulic Jetting

Bi-centered Movement for Hole EnlargementAbrasive Jetting (solids added to HP stream)

Low Weight on Bit (with above systems)

New Technology usesEnhanced Directional Drilling (Offset Hydraulic / Abrasion Jetting)

Laser/ Plasma Drilling Clamp-on IM for CTD

Inverted Motor Drilling System

Long VideoLong Video

HP Jetting & ASJ

Multiple motors, step drilling, counter-rotation

Jointed or Coiled

Tubing

Drillstring does not rotate

Ultrashort Turns Possible

Inverted Motors for DrillingGeneralized Electric IM Motor Configuration

Conversion Factors

Torque- Newton Meters to Foot Pounds– 1 Nm = 0.73756 ft lbs

Dimensions- Millimeters to inches– 1 mm = 0.03937 inches

Power- Watts to Horsepower– 1 watt = 0.001341 Hp US– 1 KW = 1.341 Hp US– Horse Power = 0.746 Kilowatts– Hp = ft-# torque X rpm /33000

List of Acronyms, Abbreviations,Conversions and Equations

Power (Horsepower) = Torque(lb-ft) * rpm 5252

Power (Watts) = Torque(lb-ft) * rpm

7.04

Foot-Pound Torque =

Newton-Meters Torque * 0.7376