TANDEM ESP PROTECTORS

Connecting two or more modular ESP protectors in a series enhances motor protection. Tandem ESP protectors are used in harsh environments, in production programs that require high pump rates, and in wells where production is periodic with lots of stops and starts.

BENEFITS

Extend ESP runlife in harsh conditions

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Using tandem protectors reduces the impact of harsh conditions to extend ESP service life

Protect bigger pumps and stronger motors

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Greater protection enables you to use more powerful pumps and motors in your ESP design

Protect against stops and starts in periodic operations

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Tandem bearings reinforce the shaft and increase the axial load limit

applications

Conventional and unconventional wells using an ESP
Vertical, directional, and horizontal wellbores
Harsh downhole conditions and high pump rates
Wells that produce only periodically

capabilities

Available in 272 (69 mm), 319 (81 mm), 338 (86 mm), 362 (92 mm), 406 (103 mm), 449 (114), 535 (136 mm), and 677 (172 mm) series
Designed to perform with high-power motors and high-rate pumps

features

Tandem configuration enables you to protect high-power motors and high-rate pumps and easily replace or upgrade equipment if needed
Doubling the protection extends ESP runlife in harsh conditions
Two axial bearings work in tandem to increase axial load limits

Photo showing Modular ESP protector ends that are connected to create a tandem ESP protector

TECHNICAL CHARACTERISTICS

Cutaway illustration of tandem ESP connectors

Outer Diameter	Shaft Diameter	Thrust bearing load limit	Maximum Motor Power	Oil volume	Max Oil volume of motor	Length	Weight
2.72 in.	0.50 in.	4500 lb (@60Hz)	TBA	6 liters	18 liters	TBA	TBA
69 mm	14 mm	1700 kg (@50Hz)	TBA	6 liters	18 liters	TBA	TBA
3.19 in.	0.79 in.	4500 lb (@60Hz)	289 hp (@60Hz)	8 liters	18 liters	7.56 ft	221 lb
81 mm	20 mm	1700 kg (@50Hz)	180 kw (@50Hz)	8 liters	18 liters	2.31 m	100 kg
3.62 in.	0.98 in.	5292 lb (@60Hz)	320 hp (@60Hz)	15 liters	23 liters	14.98 ft	331 lb
92 mm	25 mm	2000 kg (@50Hz)	200 kw (@50Hz)	15 liters	23 liters	4.57 m	150 kg
4.06 in.	0.98 in.	7144 lb (@60Hz)	579 hp (@60Hz)	18 liters	31 liters	14.98 ft	397 lb
103 mm	25 mm	2700 kg (@50Hz)	360 kw (@50Hz)	18 liters	31 liters	4.57 m	180 kg
4.49 in.	1.38 in.	8203 lb (@60Hz)	720 hp (@60Hz)	20 liters	40 liters	8.04 ft	595 lb
114 mm	35 mm	3100 kg (@50Hz)	450 kw (@50Hz)	20 liters	40 liters	2.45 m	270 kg
5.35 in.	1.50 in.	11907 lb (@60Hz)	1126 hp (@60Hz)	40 liters	80 liters	18.19 ft	772 lb
136 mm	38 mm	4500 kg (@50Hz)	700 kw (@50Hz)	40 liters	80 liters	5.55 m	350 kg

More about our tandem ESP protectors

Tandem ESP protector configuration uses two or more modular protectors in series to add increasing levels of ESP motor protection.

Schemes for connecting the protectors include:

Labyrinth, sequential diaphragm, parallel diaphragm, sequential diaphragm, parallel diaphragm, sequential labyrinth
Labyrinth, sequential diaphragm, parallel diaphragm, sequential diaphragm, parallel diaphragm
Aperture, parallel aperture, sequential aperture, parallel aperture

Using two diaphragms instead of one enables you to add an additional sliding bearing, increasing shaft rigidity. Two axial bearings work in tandem, increasing axial load limits the shaft can bare. If one of the supports fails, the load is absorbed by the second support.