Concentric DIAL Units | Higher Rate Single String Wells & In-Situ Gas Lift

Summary

DIAL units are the primary in-well control and monitoring component of Silverwell’s Digital Intelligent Artificial Lift production optimization system.

Each tubing deployed Concentric DIAL unit has up to six independently actuated gas lift injection valves. Custom orifice configurations are selected to match predicted gas injection needs across a well’s operating life.

Multiple DIAL Units can be installed with a single Tubing Encased Conductor (TEC) providing real time control of injection rate and depth. Integral Check Valves qualified to API 19G2 assure well integrity and are immune to chatter that plague conventional gas lift systems.

Continuous downhole permanent monitoring data informs production and reservoir management decisions including automated gas lift production optimization.

DIAL increases production and reduces cost with interventionless operation that dramatically reduces HSE risk. DIAL also enables deeper injection to maximize drawdown and efficient use of available lift gas.

Applications

Onshore & offshore higher rate single string wells

Integrate in-well monitoring and lift gas injection adjustment for continuous and remote optimization without intervention.

In-situ auto gas-lift applications

Monitor and control lift gas produced from one zone to lift production from another.

Features

Surface controlled variable orifice size
Integrated back-pressure valves
Tubing & annulus pressure and temperature sensors
No gas-charged bellows
Unlike conventional valves, no casing pressure loss when transferring stations
Testable cableheads and E-Beam welded construction
Interventionless and remote operation
Low power draw
Onboard condition monitoring

Benefits

Continuous production optimization without intervention
Qualified to industry standards to maintain well integrity
Real-time visualization of flowing gradient and in-well lift gas injection rate to assess well performance for date-driven decisions
Consistent valve performance, regardless of well conditions, and eliminates chatter or multi-consistent continuity and comms testing to identify TEC Damage pointing
More efficient use of available lift gas to inject deeper and/or lift more wells with the same available compression horsepower and less injection stations
Hermetically sealed electronics enables life-of-well reliability
Continuous production optimization with reduced logistics costs less HSE risk exposure
Solar powered operation in remote environments
Feedback of correct valve actuation and overall system health

DIAL Data

		3-1/2"	4-1/2"	5-1/2"
Dimensions	OD	5.787 in \| 147.0 mm	6.787 in \| 172.4 mm	8.46 in \| 214.88 mm
	ID	2.963 in \| 75.26 mm	3.936 in \| 99/97 mm	4.879 in \| 123.93 mm
	API Drift	2.867 in \| 72.8 mm	3.833 in \| 97.4 mm	4.767 in \| 121.1 mm
	Eccentricity	0	0	0
Connection	Type	JFE Bear Custom threads available on request
	Weight	9.2 lb/ft	12.6 lb/ft	17 lb/ft
Orifices	Per Unit	3 or 6		4 or 8
	Range	4/64 in to 12/64 in
Rating	Collapse	6,000 psi \| 414 Bar
	Burst	10,000 psi \| 689 Bar
	Temperature	257 deg F \| 125 Deg C
Construction	Metallurgy	UNS N07718 Inc 718 \| UNS S20910 \| XM-19 Nitronic 50HS
	Critical Seals	Electron Beam Welded \| Metal-to-metal \| FKM
	Termination	Metal-to-metal \| Field testable
Communication & Control	TEC	¼" Tubing Encapsulated Conductor \| 3 Conductor
	Unit Count	Max 16 DIAL units per system \| Depth dependent
	Range	Max deployable depth=30,000 ft \| 9,150 m \| Unit count dependent
Monitoring	Sample Rate	1 sample every minute \| 6 per minute for brief monitoring events
	Accuracy	+/- 0.15% FS (10 ksi)
Note: Burst rating reduced to API value for tubulars below 10 ksi. Note: JFEBEAR™ is a trademark of JFE Steel Corporation.