Question 1

What is the core function of Water Injection Pump in oilfield development?

Accepted Answer

The injection pump is the pressure source for waterflood: it takes treated injection water at the suction and delivers it at the reservoir pressure (13 to 68 MPa across the range) through the wellhead into the formation, replacing the pressure that declines as the field produces. The objective is to hold the reservoir pressure above the bubble point, keep the producing wells on line and extend the field's productive life rather than letting the pressure support decline.

Question 2

What is the difference between centrifugal and plunger water injection pumps?

Accepted Answer

Centrifugal injection pumps carry large volume at lower pressure — the 4–36 m³/h rate at the 13–25 MPa range, where a single barrel moves shallow and medium wells without the maintenance load of a plunger end. Plunger pumps hold the high-pressure end of the envelope (up to 68 MPa) for deep reservoirs and low-permeability zones, where the flow is smaller but the pressure must stay accurate through long injection cycles. The choice is made on the reservoir pressure and the required injection rate, not on pump brand: send the target bottomhole pressure and the make-up rate and we quote the pump type, plunger count and power rating.

Question 3

Can the pump adapt to oilfield impurity-containing and high-salinity water media?

Accepted Answer

Yes. The wetted-end material — plungers, valves, liners and manifold — is chosen against the injection water analysis, not by a default spec. For high-salinity water we quote duplex or stainless fluid ends with ceramic plungers; for produced-water injection with solids carry-over, the valve and liner materials are upgraded and the suction strainer and cyclone are sized on the particle report. Send the water quality sheet (salinity, TDS, solids count, H2S/CO2 if any) with the inquiry and the wetted-end materials are quoted against that analysis rather than assumed.

Question 4

How to ensure long-term stable and energy-saving operation?

Accepted Answer

The pump is sized to the injection rate the reservoir actually needs, not to a nameplate maximum: the variable-frequency drive trims the motor speed to the rate, so the unit does not run against a bypass at partial load. Protection covers over-pressure, motor overload and low suction, and the wetted-end materials are chosen against the water analysis so the packing and valve life match the duty rather than the calendar. Send the injection rate and bottomhole pressure with the inquiry and the pump curve is quoted to that point.

Question 5

Are the rated parameters and optional functions adjustable for the Water Injection Pump?

Accepted Answer

Yes. The configuration is settled against the water-injection programme before the order: pump type (suction-fed ZJ3GY or booster-fed ZJ3ZY), outlet pressure and rate rating within the 13–68 MPa and 4–36 m3/h range, wetted materials for the treated water, control mode and explosion-proof grade are matched to the reservoir pressure, injection allocation and site power supply, then written into the quotation and the factory test report.

Ürün	Water Injection Pump
Ürün grubu	Assembly Parts

model	MPa Emiş basıncı	mm Strok	dev/dak Pompa hızı	kW Motor gücü	mm Piston çapı	m3/s Teorik deplasman	MPa Çıkış basıncı
ZJ3GY125	0.03~1.5	125	260	55~110	28~56	4~15	16~55
ZJ3GY125A		127	370	55~110	35~57	8~36	13~44
ZJ5GY125A		127	370	185	35~57	13~36	16~42
ZJ3ZY125	12~18	125	230	55~75	35~56	5~12.5	30~68
ZJ3ZY125A	12~18	127	370	90~110	38~57	10~22	18~52
ZJ3GY175	0.03~1.5	177	240	185	35~45	7~12	40~62
ZJ3ZY175	15	177	235	110	40~54	9.5~18	32~58

Su Enjeksiyon Pompası

Operasyon gereksitimi etrafında tasarlandı.

13 ila 68 MPa Çıkış Basıncı

4 ila 36 m3/s Teorik Oran

55 ila 185 kW Motor Eşleşmesi

125 ila 177 mm Stroklar, 230 ila 370 dev/dak

28 ila 57 mm Piston Seçiciliği

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