Solar Powered Beam Pumping Unloading Liquid from Gas Wells

Solar Powered Beam Pumping Solar Powered Beam Pumping Unloading Liquid from Gas WellsUnloading Liquid from Gas Wells

Mike Mike PoythressPoythress -- CDICDIGordon Gates Gordon Gates –– BP AmericaBP America

O. L. Rowlan O. L. Rowlan -- Echometer CompanyEchometer CompanyJeff Fisher Jeff Fisher -- SolaMotorSolaMotor

Solar Powered Beam PumpingSolar Powered Beam PumpingSolar Powered Beam PumpingCC--88--12.512.5--2828CBM CBM

3882 in3882 in--lblb

Developed as Windmill ReplacementDeveloped as Windmill Replacement

DC MotorDC Motor1/3 HP1/3 HP

8 ft x 8 ft Solar Panels8 ft x 8 ft Solar Panels8 ft x 8 ft Solar Panels 1.1. Charge Deep Charge Deep Cycle Battery Cycle Battery PackPack

2.2. Sun Tracking Sun Tracking CapabilityCapability

3.3. 64 Sq Ft Panels 64 Sq Ft Panels Provides 370 Provides 370 ampamp--hours hours

4.4. 1/3 Hp Electric 1/3 Hp Electric DC Motor will DC Motor will drive pumping drive pumping system 1 month system 1 month without sun lightwithout sun light

8 Deep Cycle 6 Volt Batteries Linked 12 Volt System max 120 Amps Output8 Deep Cycle 6 Volt Batteries Linked 8 Deep Cycle 6 Volt Batteries Linked

12 Volt System max 120 Amps Output12 Volt System max 120 Amps Output

Opened Battery CaseOpened Battery Case

Spool of Continuous Fiberglass RodsSpool of Continuous Fiberglass RodsSpool of Continuous Fiberglass Rods1. Installed in a minimum of time and manpower.

2. Two man crew equipped with a 3/4 ton truck and trailer can install the complete lift system in a matter of hours

Wellbore Description Wellbore Description Wellbore Description 1.1. Continuous 1350 Feet of Continuous 1350 Feet of ½½ Inch Inch

Diameter Fiberglass RodsDiameter Fiberglass Rods2.2. 1.0625 Inch Diameter Tubing Pump1.0625 Inch Diameter Tubing Pump3.3. 1.251.25”” OD Poly Lined Tubing OD Poly Lined Tubing 4.4. 4.5 Inch Casing4.5 Inch Casing5.5. Fruitland Perforations 1329Fruitland Perforations 1329--1359 1359

FeetFeet6.6. Pump Intake Depth 1357.7 FeetPump Intake Depth 1357.7 Feet7.7. Plugged Back TD 1425 FeetPlugged Back TD 1425 Feet

Fluid Level Below Perforations at Pump IntakeFluid Level Below Perforations at Pump IntakeFluid Level Below Perforations at Pump Intake

PerfsPerfs

1350 Ft ½ In DiaFiberglass Rod

1350 Ft 1350 Ft ½½ In In DiaDiaFiberglass RodFiberglass Rod

1.1. Wt Rods Air = 270 LbsWt Rods Air = 270 Lbs2.2. Wt Rods Fluid = 159 Wt Rods Fluid = 159

LbsLbs3.3. 20 Inch Surface 20 Inch Surface

StrokeStroke4.4. Spring Constant 77 Spring Constant 77

lbs/Inlbs/In5.5. 7.2 Static Stretch7.2 Static Stretch6.6. 13.9 In. Pump Stroke 13.9 In. Pump Stroke 7.7. 556 Lbs Max Fluid 556 Lbs Max Fluid

Load (0 PIP)Load (0 PIP) 0 20.0-0.16

0

0.16

0.31

0.47

0.63

0.78

13.9

Fo Max Fo From Fluid Level

Wrf

Wrf + Fo Max

Kr & Kt

PR 0.087 HP ~ 4.72 SPM ~ 7.9 BPD Pump DispPR 0.087 HP ~ 4.72 SPM ~ 7.9 BPD Pump PR 0.087 HP ~ 4.72 SPM ~ 7.9 BPD Pump DispDisp

Full PumpFull Pump

0.8 Cups / Stroke0.8 Cups / Stroke

Timer (8 Event Programmable w/ 15 Minutes On)Timer (8 Event Programmable w/ 15 Minutes On)Timer (8 Event Programmable w/ 15 Minutes On)

PR 0.055 HP ~ 4.86 SPM ~ 3.1 BPD Pump DispPR 0.055 HP ~ 4.86 SPM ~ 3.1 BPD Pump PR 0.055 HP ~ 4.86 SPM ~ 3.1 BPD Pump DispDisp

Pump Leak Pump Leak ≅≅0.3 Cups / Stroke0.3 Cups / Stroke

Pump OffPump Off

Measured Rod Weight within 4 lbs Calculated WrfMeasured Rod Weight within 4 lbs Calculated Measured Rod Weight within 4 lbs Calculated WrfWrf

TV Leak OffTV Leak Off

Fiberglass Rod’s Stressed to 23% of AllowableFiberglass RodFiberglass Rod’’s Stressed to 23% of Allowables Stressed to 23% of Allowable

Net Peak Gearbox Torque 47% of RatingNet Peak Gearbox Torque 47% of RatingNet Peak Gearbox Torque 47% of Rating

3725 in3725 in--lblb

Quick Rod System DesignQuick Rod System DesignQuick Rod System Design

3725 in3725 in--lblb

Comparison of Measured and DesignedComparison of Measured and DesignedComparison of Measured and Designed

1)1) Actual Pump Leakage of 37% Actual Pump Leakage of 37% -- Unknown in Unknown in DesignDesign

2)2) Measured Peak Load 100 Lbs Higher Measured Peak Load 100 Lbs Higher

SolaMotor Limitations for 20, 28, 36 Inch StrokesSolaMotor Limitations for 20, 28, 36 Inch StrokesSolaMotor Limitations for 20, 28, 36 Inch Strokes1.0625 Diameter Plunger 4.72 SPM

SolaMotor Limitations for 20, 28, 36 Inch StrokesSolaMotor Limitations for 20, 28, 36 Inch StrokesSolaMotor Limitations for 20, 28, 36 Inch Strokes1.0625 Diameter Plunger 4.72 SPM

Operational Design LimitationsOperational Design LimitationsOperational Design Limitations1.1. Existing System CExisting System C--88--12.512.5--28 4.72 SPM 1.0625 Plunger28 4.72 SPM 1.0625 Plunger

a)a) Change to the 28Change to the 28”” stroke, With Pump Depth about 2300 feet, stroke, With Pump Depth about 2300 feet,

b)b) Pump displacement of 6 bpd, 0.1 PRHP and 1/3 HP motor OKPump displacement of 6 bpd, 0.1 PRHP and 1/3 HP motor OK

c)c) Peak Polished rod load 1150+, Gearbox torque 6.33 inPeak Polished rod load 1150+, Gearbox torque 6.33 in--Lbs.Lbs.

d)d) Calculating negative load of Calculating negative load of --200 lbs at bottom of fiberglass rods.200 lbs at bottom of fiberglass rods.

2.2. Pump Depth 3000 feetPump Depth 3000 feeta)a) 3636”” stroke = 3 BPD and/or 48stroke = 3 BPD and/or 48”” stroke = 11 bpd productionstroke = 11 bpd production

3.3. Pump Depth 4000 feetPump Depth 4000 feeta)a) 6464”” inch stroke you can lift 5 BPD inch stroke you can lift 5 BPD

b)b) --347 lbs of negative rod load / add 75 feet of 1 347 lbs of negative rod load / add 75 feet of 1 ½½ ““ weight barsweight bars

4.4. Pump Depth 5000 feet with a CPump Depth 5000 feet with a C--2828--3232--100 PU100 PUa)a) 100100”” inch stroke can lift 15 BPD w/ 1.1 Motor HP and 0.54 PRHPinch stroke can lift 15 BPD w/ 1.1 Motor HP and 0.54 PRHP

b)b) 100 ft of 1 100 ft of 1 ½”½” Weight Bars w/ Unanchored 2.375Weight Bars w/ Unanchored 2.375”” PloyPloy--Lined TubingLined Tubing

Observations/ConclusionsObservations/ConclusionsObservations/Conclusions

1.1. Reliable operation Reliable operation –– 2 years without failure2 years without failure

2.2. Installed in a minimum of time and manpower.Installed in a minimum of time and manpower.

3.3. Low Cost OperationLow Cost Operation

4.4. Designed Fiberglass & PolyDesigned Fiberglass & Poly--lined Tubing are lined Tubing are corrosion resistant corrosion resistant

5.5. PolyPoly--lined Tubing prevents abrasion wearlined Tubing prevents abrasion wear

6.6. ½”½” Diameter Fiberglass Rods are Light WeightDiameter Fiberglass Rods are Light Weight

7.7. Fiberglass Rods can be pulled/ran from Spool Fiberglass Rods can be pulled/ran from Spool without the cost of a Work Over Rigwithout the cost of a Work Over Rig