digital intelligent artificial lift...gas lift rate. ipo gas lifting from 11thipo at 6827’ md....

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Digital Intelligent Artificial Lift Technology | Application | Justification | Operation 1

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Page 1: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

Digital Intelligent Artificial LiftTechnology | Application | Justification | Operation

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Page 2: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Gas Lift Production Optimization is Difficult

� Is my well completely unloaded?� Is the well multi-point injecting?� What is my lift depth?� Am I optimized on gas lift?� Can I lift deeper?� Is my wellbore hydraulic model a good match to actual well performance?� How much will I have to intervene?� Do I have enough gas?� What should be my lifting life-cycle?

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Page 3: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Legacy Technology Challenges

� Narrow Operating Window.� Design safety margins.� Injection depth limited.� Difficult to assess lift effectiveness.� Intervention to optimize.� Sensitive to well dynamics.� Multi-point injection.� Valve Chatter

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Page 4: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

Technology & ApplicationOvercome limitations of existing gas-lift technologyImprove life-of-well production economics

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Page 5: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Features Benefits

• Variable orifice size at any depth

• Deeper injection

• No deviation limitation

• No well intervention • Pressure and

temperature data

• Remote monitoring and control

• Intelligent field-wide management

Eliminate intervention

Reduce OPEX

Mitigate instabilities

Enhance recoveries

Optimize production

Reduce HSE risk

Digital Intelligent Artificial Lift - DIAL

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Page 6: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Product Specification

� Multiple units per well.

� Controlled by a single ¼” TEC and SCS.

� 6,000psi Collapse rated Pressure.

� 10,000psi Burst rated Pressure.

� 2-7/8”, 3.5” and 4.5” tubing configurations.

� 125°C Max. rated Temperature.

� Binary Actuation, real time gas injection rate.

� Max. choked Flow Rate 6MMscfD.

� Fully MR0175 / ISO 15156 compliant.

� Electron Beam Welded construction.

Electrical ConnectionMetal-to-Metal Seal

Electronics HousingDownhole Control

System (DHCS)

Valve Housing6 x Gas Injection Valves

and Orifices

Actuator HousingBinary Actuator Systems

Annulus and Tubing Sensors

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Page 7: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Actuator and Valve Technology

Reverse Flow Check Valve

BellowsActuated Valve

OrificeVenturi option

Actuator

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Page 8: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

All 6 valves open

1 valve open

Silverwell Operating Window

Typical standard gas lift valve

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Operating Envelope - Performance Comparison

Page 9: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Electronics & Sensing Module

Actuator Housings(Up to 3 valves per unit )

Top

Bottom

Lower Electrical Connection

Upper Electrical Connection

2-7/8” & 3-1/2” slimline DIALMandrel / Body

Page 10: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Efficient Production OptimizationDIAL User Interface

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Page 11: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

Justification & OperationEnhance life-of-well business caseField proven technology

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Page 12: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Comparative Performance TestingImproved lift performance throughout well life in the Permian – single well

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IPO Silverwell Added Value

Year Water Cut Reservoir P (Psi) TBFD BOPD TBFD BOPD % BOPD

Early life 50% 3456 718 358 839 417 16.5% 59

Mid life 60% 2112 313 125 519 208 66.4% 83

Late life 80% 1500 156 31 246 48 54.8% 17

• In all three reservoir pressure cases, the Silverwell DIAL installation yields a higher production rate through deeper injection.

• DIAL technology eliminates multipoint injection.

• DIAL remote control technology enables Gas Assisted Plunger Lift (GAPL) in late life.

417

208

48

358

125310

100

200

300

400

500

Early Mid Late

BOPD

Elapsed Time (Years)

Barrells Oil per Day

Silverwell IPO/Conventional

Page 13: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Single Well - Early-life Performance ComparisonDeeper injection | More production | No multi-pointing | Less stations

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SilverwellGas Lifting from DIAL unit at 8056’ MD – Station 6.Production Rate = 833 BFD• The well is injecting as

deep as possible, with the 1100 Psi compressor discharge at surface.

• The predicted production rate is 834 BFD, 417 BOPD, 50% water cut, injecting 610 MCFD.

• The port size at the operating valve can be changed from the surface to further optimize the gas lift rate.

IPOGas Lifting from 11th IPO at 6827’ MD.Production Rate = 718 BFD• The well is multi-pointing

as 4 IPO valves are open, and capable of passing gas.

• Casing pressure can be reduced to attempt to close the upper valves, but, production rate drops with less gas injected injection will transfer to an upper valve.

Page 14: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

BenefitsObserved from DIAL gas lift wells

15% Oil Gain Mitigating Instability 25% Gas Savings

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Page 15: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Case History 1Well OptimizationThrough downhole gauge measurement, the operator recognised the opportunity to increase gas injection rate from 400 to 500MCFD.

Silverwell DIAL valves were opened, decreasing casing pressure.

Net Oil Production increased 10% from 217 to 239BOPD.

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Page 16: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Case History 2Mitigating Instability8/64th orifice size causing multi-point injection and well instability.

Upper IPO valve continuously opening and closing.

Operator increased the port size to 10/64 by opening an additional valve. Well stability achieved.

Valve closed to replicate issue and confirm the DIAL action.

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Page 17: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Case History 3Gas ManagementThrough downhole gauge measurement, the operator recognised the opportunity to reduce the gas injection rate.The valve combination was changed from 18/64 to 12/64ths.The operator increased casing pressure and increased Net Oil Production by 18%.

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Page 18: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Gas Lift OptimizationFrom Months to Minutes

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GL System & well test data collated

Prod. Eng. reviews reports

Collect Report

Prod. Eng. model data and analyze

Model

Prod. Eng. make decision

Review

Ops make changes to GL System

Act

DIAL-It-In™ Continuous Process

Page 19: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Eliminate production uncertainty, instabilities and operational costs with continuous, intervention-free, artificially lifted well optimization.

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More production Accelerating return-on-investmentincreased well production from enhanced lift efficiency

Less intervention Reducing opex & riskreduced well down-time from intervention-free operation

More data Informing production optimizationincreased insight from multiple in-well sensors

Less uncertainty Enabling management decisionsreduced misunderstanding from integrated gas lift system

Page 20: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

© 2019 | Silverwell Ltd | All Rights Reserved

Qualification TimelineQualification & test summary for DIAL gas lift optimization system

2010Flowloop test at Shell Rijswijk

Electromagnetic compatability testing of DIAL system

2013Material abrasion & erosion testing at National Physics Laboratory

PDO pilot installation in Oman

Sour gas exposure testing at TWI

Bellows fatigue testing (sour gas & air) at TWI

Seal explosive gas cyclic testing at Element

DIAL transport vibration testing at Alphatec

2016Actuator gas functionality testing at Vaseco

125 deg C PCB HALT at Alphatec

PTTEP pilot installation in Thailand. 2015Coated check-valve erosion testing at IRIS

Bellows explosive gas cyclic testing at Element

Metal seal gas cyclic testing at BHR Group

E-Beam HP gas cyclic testing at BHR Group

2011Ingress Protection (IP) testing of Surface Control Systems at Alphatec

2017Uncoated check valve erosion testing at BHR Group

Tatweer pilot installation in Bahrain.

2014Magnet assembly FEA & shear strength testing at TWI

HPHT static gas seal testing at Eelement

Seal explosive gas cyclic testing at Element

DIAL HALT at Alphatec

DIAL & actuator gas functionality testing at Vaseco

Bellows explosive gas cyclic testing at Eelement

DIAL flow testing at SWRI

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Page 21: Digital Intelligent Artificial Lift...gas lift rate. IPO Gas Lifting from 11thIPO at 6827’ MD. Production Rate =718 BFD •The well is multi-pointing as 4 IPO valves are open, and

Thank you !Questions ?

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