Gas Well Deliquification Workshop

Gas Well Deliquification WorkshopAdams Mark Hotel, Denver, Colorado

March 5 - 7, 2007

HYDRAULIC JET PUMPING – A SUCCESSFUL ALTERNATIVE TO DEWATERING GAS WELLS

Giovanni Alippio * Bill Jackson * Jim Speer

J&J Technical Services, L.L.C.

Mar. 5 - 7, 2007 2007 Gas Well Deliquification Workshop Denver, Colorado

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Overview

• IN GAS WELLS, WATER IS PRODUCED COMMINGLED WITH GAS.

• WITH TIME, THE WATER LEVEL INCREASES THE HYDROSTATIC HEAD. THE INCREASED HYDROSTATIC HEAD IN TURN DECREASES GAS PRODUCTION (KILLING THE WELL)

• ARTIFICIAL LIFT SYSTEMS ARE THE BEST WAY TO REDUCE WATER LEVELS AND INCREASE GAS PRODUCTIVITY.

• WE WILL FOCUS ON HYDRAULIC JET PUMPING AS A SUCCESSFUL, ECONOMIC ALTERNATIVE TO THE MORE TRADITIONAL MEANS OF DEWATERING GAS WELLS.


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NORMAL LOADING SCENARIONORMAL LOADING SCENARIO

Hydrostatic Hydrostatic LoadingLoading

Suppressed Suppressed Flowing BHPFlowing BHP


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EVENTUAL NEED FOR ARTIFICIAL LIFT

TerminalTerminalHydrostatic Hydrostatic

LoadingLoading

Well is eventually ‘loaded up’ and gas is prohibited by hydrostatic head from flowing.

Well has little or no commercial viability.

Hydrostatic head needs to be reduced, but what lift method should be used?

Beam pump…Gas Lift....

Plunger Lift…..PCP…….

ESP…….or JET PUMP?


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Conventional Solutions:Conventional Solutions:

Plunger Lift:Plunger Lift:

•• Hydrostatic loadingHydrostatic loading

•• Intermittent deIntermittent de--wateringwatering

•• reliability ??reliability ??

•• Limited performance lifeLimited performance life


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Conventional Solutions:Conventional Solutions:

Capillary Tubing:Capillary Tubing:

•• Hydrostatic loadingHydrostatic loading

•• Foam flow frictionFoam flow friction

•• Slugging ??Slugging ??

•• Limited performance lifeLimited performance life


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Rod Pumps:Rod Pumps:

•• ServicingServicing issuesissues

•• Gas lockingGas locking

•• SandSand

•• Rod cut tubingRod cut tubing

•• Rate limitations Rate limitations

•• Completion sizing issuesCompletion sizing issues


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Jet Pump Dewatering SystemJet Pump Dewatering System

Gas Gas FlowFlow

•• JPDS Details:JPDS Details:

•• Concentric completion:Concentric completion:–– Coiled Tubing inside production Coiled Tubing inside production

tubing (1.25tubing (1.25”” & up) (power Fluid)& up) (power Fluid)–– oror–– Integral Joint Tubing Inside Integral Joint Tubing Inside

production tubing (1production tubing (1”” or 1.25or 1.25””))

•• widely variable output rangewidely variable output range

•• No downhole moving partsNo downhole moving parts

•• Sand handling abilitiesSand handling abilities

•• No gasNo gas--locking issues (pump is set a locking issues (pump is set a minimum of 30minimum of 30’’ below the below the perforations)perforations)

•• Can be installed Can be installed ““through tubingthrough tubing”” for for 2 3/82 3/8”” and largerand larger

•• PumpablePumpable / fishable carrier/ fishable carrier

Power FluidPower Fluid

FormationFluid

FluidFluidReturnsReturns


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Hydraulic Jet Pump Analysis Software Hydraulic Jet Pump Analysis Software is now available to determine is now available to determine pumping combinations and pumping combinations and cavitation ratescavitation rates

Input Data COMPANY:.....................................Deep WellWELL IDENTIFICATION:..........................TestPUMP DEPTH:..................................9000FeetTUBING ID:.......................................85InchesCASING ID.: ....................................1.5InchesBH TEMP.:.......................................200Deg FGAS LIQ. RATIO:............................0SCF/BBLPROD. RETURN:...............................AnnulusPROD. WATER GRAV: (Sp.Gr.):..............1.05WAT. FRAC.: (50% = 0.50):...........................1PUMPING BHP:..................................200psig

LEASE:.....................................................TestREPRESENTATIVE:.................................TestTUBING LENGTH TO PUMP:...........9000FeetTUBING OD: ......................................1InchesPOWER FLUID:.....................................WaterFLOWING WH TEMP.:.......................70Deg FDESIGN LIQ. PROD. RATE:.........30BBL/DAYPRODUCED OIL GRAVITY:...................25APIPRODUCED GAS GRAVITY:.........................8SURFACE HYD. PRESS.:.................5000psigFLOWING WH PRESS.:.......................75psig

Date:: 15 - June - 2004= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =Computed Output Data - English Units= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Pump Size DD:00DD:00DD:00 CC:0CC:0CC:0 BB:00BB:00BB:00

Power Press psig

7766 7587 7407

7104 6943 6781

3428 3359 3290

Power Fluid Rate bblpd

211 209 206

352 348 344

381 377 373

Horse Power

31 29 28

47 45 44

24 23 23

Non-Cav Rate bblpd

56 79 97

77 110 134

33 47 58

Prod. Rate bblpd

30 30 30

30 30 30

30 30 30

Pumping Bot-hole psig

100 200 300

100 200 300

100 200 300

Nozzle Area inches

.0016 .0016 .0016

.0028 .0028 .0028

.0038 .0038 .0038

Throat Area inches

.0071 .0071 .0071

.0104 .0104 .0104

.0071 .0071 .0071

Gas Gas FlowFlow


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DYNAMIC AND STATIC FLUID LEVELS


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Gas Well Opportunities

Current development effort has resolved a number of issues which have to date prevented jet pumps being given much consideration for gas well dewatering. These include:

jet pump design improvements (larger intake and outlet)

concentric completion (pump can be run in CT or IJ tubing)

surface equipment optimization

scaling and corrosion issues

jet pump performance computer modeling

well performance optimization & stabilization

GasGasFlowFlow


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Jet Pump Dewatering SystemJet Pump Dewatering System35 HP Diaphragm Pump for Down Hole Jet Pump1200 BBL/Day @ 1200 PSI

New, more efficient jet pump design allows lower surface horsepower requirements.Low maintenance diaphragm pumps can now be used in some applications with volumes and pressures of 10.3 GPM @ 2500 PSIIn these cases, the down hole jet pump and surface pump can be purchased for less than $50,000.00Larger high pressure diaphragm pumps are undergoing field tests to provide volumes of 45 GPM @ 3500 PSI


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•• Production Benefits:Production Benefits:•• 1 1 -- Increased Production Rates by Increased Production Rates by

reducing or eliminating hydrostatic reducing or eliminating hydrostatic suppression of gas from the formationsuppression of gas from the formation

•• 2 2 –– Achieves formation pressure draw Achieves formation pressure draw downdown

•• 3 3 –– Significantly increases recoverable Significantly increases recoverable reserves because more gas is able to reserves because more gas is able to move into the well boremove into the well bore

•• 4 4 –– Constant monitoring of formation Constant monitoring of formation pressure and performance optimization pressure and performance optimization via proprietary softwarevia proprietary software

•• 5 5 –– High solids in produced fluid can be High solids in produced fluid can be handled efficiently and economicallyhandled efficiently and economically

GasGasFlowFlow

IPR & TPR Analysis:

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Gas Production Rate [MMscf/day]

Current IPRWell Details:

• 2 7/8” to 8,500 ft

• 5 1/2” to 9,000 ft

• 800 psi BHPstatic

• 300 psi BHPflowing

- 0.3 MMcf/day

- 35 BPD water

• 70 psi WHP


1) Increased Production Rates

IPR & TPR Analysis:Completion TPR

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Current IPR



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Current IPR 1.5” CT TPR1.25” CT TPR



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1.75” Jet Pump TPR



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1.75” Jet Pump TPR

0.19 MMscf/day


Daily Production Impact:

Incremental = 0.19 MMscf/day x $ 7 gas

= $ 1,330 / day or $ 486,000 / year



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Current IPR 1.75” Jet Pump TPR


“Lost” Reserves

Reserves Impact:

Assume 4 BCF @ 50% recovery => 2 BCF (current)

Assume 15% additional => 0.6 BCF (incremental)

or => $ 4.2 million


1.5” CT TPR1.25” CT TPR

2) Greater Reserve Recovery

“Lost” Reserves


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Current IPR

How much is this worth ??


1.5” CT TPR1.25” CT TPR


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SummaryDue to new designs, Jet Pumps are a viable economicalternative to de-watering gas wells.

* Lower surface HP requirements

* Less maintenance (no moving parts down hole)* High solids in produced fluid can be handled efficiently and High solids in produced fluid can be handled efficiently and

economicallyeconomically** Down hole pumping combinations can be changed without Down hole pumping combinations can be changed without

a work overa work over* Constant monitoring of formation pressure and Constant monitoring of formation pressure and

performance optimization with proprietary softwareperformance optimization with proprietary software** Significantly increases recoverable reservesSignificantly increases recoverable reserves

Gas Well Deliquification Workshop

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