PEMSCO could provide 4 series electrical submersible pump systems which are applicable for 4-1/2” to 8-5/8”casing, 30m3/d to 4700m3/d flow rate, 90℃ to 180℃bottom hole temperature and 3500m lifthead to meet the requirements of users. We could also provide the technical services including well selection,pump selection, installation, operation and trouble shooting.

Submersible Pump

Submersible pumps are multistage centrifugal pumps which are designed to lift a full range of volume of oil and water at low operating cost with low initial investment. A pump is composed of impellers, diffusers, shaft, housing, pump head and base. Tandem pumps can be provided to satisfy the higher head requirement.

The submersible pumps are categorized into 86 series, 101 series (98 series), 130 series and 172 series.

Pump Specification

Casing	Series	OD(mm)	m3/d @50HZ	BPD@ 60HZ
4 1/2"Or Large	86	86	24-350	181-2642
5 1/2"Or Large	98	98	22-900	166-6792
7"Or Large	130	130	145-1715	1094-12900
8 5/8"Or Large	172	172	1600-5640	12076-42569

Gas Separator

In high GOR and low-bottom-hole pressure wells, the pump performance will be affected significantly by the free gas. In such cases, the intake section is replaced by a gas separator which removes the free gas from the produced fluid. By venting the free gas to the annulus, the separator prevents gas locking and cavitation, stable motor load and increase running life.

For special well conditions such as corrosive, abrasive or high GOR fluid, different design configuration ofseparators will be offered. Ni-Resist chamber and rotating puts eliminate potential corrosion and sandwear problems. In high GOR wells, we provide tandem separators with 5%-10% gas separation efficiencyincrease.

Three series gas separators are offered: 86 series, 101 series (98 series) and 130 series, to satisfy the necessity of pumps and casings.

Separator Specification

Casing	Series	Type	Length(m)	OD(mm)
4-1/2"or Large	86	QYF86X	0.65	86
5-1/2"or Large	98	QYF98X(17.4)	0.76	98
		QYF98X(22.2)	0.69
	101	QYF101X(17.4)	0.76	101.6
		QYF101X(22.2)	0.69
		QYF101XG(17.4)	0.71
		QYF101XS(17.4)	1.22
		QYF101XS(22.2)	1.07
7" or Large	130	QYF130X	0.944	130
		QYF130XS	1.888

Protector

In general, the protector performs the following basic functions:

a) housing the thrust bearing that carries the axial thrust developed by pump,
b) isolate and protect the motor from well fluid,
c) equalize the pressure inside the motor with the wellbore pressure and thus eliminate the pressure differential across shaft seals,
d) compensate for the expansion and contraction or motor oil due to heating and cooling of the motor when the unit is running or shut down,
e) transmit the shaft torque from motor to pump.

We could provide labyrinth protectors, elastomeric bag/labyrinth protectors and modular design protectors to match individual well conditions or customer requirements.

Five series module protectors are provided by PEMSCO: 86Series, 101 series (98 series),130 series, 143 series and
172 series protectors. Tandem protectors can be used to increase motor protection when needed.

Protector Specification

Casing	Series	Type	Configuration	Length(m)	OD(mm)	Application Temperature
4-1/2"or Large	86	QYH86J	Elastomeric Bag	1.6	86	90/120℃
4-1/2"Or Large	86	Double Elastomeric Bag	Elastomeric Bag	2	86	90/120℃
5-1/2"Or Large	98	QYH98RC	Labyrinth	1.6	98	90/120℃/150℃
5-1/2"Or Large	98	QYH98J	Elastomeric Bag	1.7	98	90/120℃/150℃
5-1/2"or Large	86	QYF86X	Elastomeric Bag	0.65	86	90/120℃/150℃
5-1/2"or Large	86	QYF86X	Elastomeric Bag	0.65	86	90/120℃/150℃
7"Or Large	130	QYH130C	Labyrinth	1.9	130	90/120℃/150℃
7"Or Large	130	QYH130J	Elastomeric Bag	0.65	130	90/120℃/150℃
7"Or Large	143	QYH143C	Labyrinth	1.9	143	90/120℃/150℃
7"Or Large	143	QYH143J	Elastomeric Bag	1.9	143	90/120℃/150℃
7"Or Large	130	QYH130	Modular Design	3	130	90/120℃/150℃
7"Or Large	143	QYH143	Modular Design	3	143	90/120℃/150℃
8-5/8"or Large	172	QYH172C	Labyrinth	2.1	172	90/120℃/150℃
8-5/8"Or Large	172	QYH172J	Elastomeric Bag	2.1	172	90/120℃/150℃
8-5/8"Or Large	172	QYH172J2	Double Elastomeric Bag	2.1	172	90/120℃/150℃

Submersible Motor

The submersible motor is a two-pole three-phase squirrel cage induction motor with a length varying from 1.5meters to 10 meters. Tandem configuration with higher power output can be provided according to the requirement.

The motor is vertical suspending configuration, and mainly made up of stators, rotors, bearings, head and base. A highly refined mineral oil is filled in the motor inside to provide dielectric strength, lubrication for bearing and cooling.

PEMSCO offers motor designs in a wide range of rated horse Over, operating voltages and currents to meet application requirements in casings of 4-1/2”, 5-1/2”, 7”, 8-5/8”or larger casing size. Normally the operating voltage for motors is from 200V to 3500V, and the operating current is from 10A to 120A. The output horsepower is a direct proportion with the motor length. When the motor is fully loaded, the rotate speed is up to 2900 RPM at 50 Hz.

Motor Specification

Casing	Series	OD(mm)	KW 50HZ		HP 60HZ		Application Temperature
			Range	KW Per Rotor	Range	HP Per Rotor
4 1/2" Or Large	95	95	6-72	1.2	10-116	1.9	150℃
5 1/2" Or Large	114P	114.3	6-148	3.1	10-240	5	150℃
5 1/2" Or Large	114J	114.3	7-152	3.7	10-246	6	120℃
5 1/2" Or Large	114PH	114.3	8-151	4.3	14-245	7	90℃
5 1/2" Or Large	114Y	114.3	8-152	4	12-243	6.4	Rare earth permanent magnet synchronous motor 90℃
7" Or Large	138	138	8-320	8	26-516	12.9	150℃
7" Or Large	143	143	10-420	10	32-672	16	150℃
7" Or Large	143(New type)	143	240-504	12	386-810	19.3	120℃
5/8" Or Large	188	188	50-900	25	643-1448	40	150℃