Oilfield Water & Polymer Injection is a core technical means in secondary recovery and tertiary recovery (Enhanced Oil Recovery / EOR) during petroleum extraction. With the increasing demand for refined reservoir development, high pressure water injection or polymer solution injection into underground oil layers can effectively maintain formation pressure, improve the water-oil mobility ratio, and enhance reservoir sweep efficiency, thereby significantly improving crude oil recovery rates.

In this application process, one of the most critical core pieces of equipment is the high pressure water injection pump and polymer injection pump. These pump systems are capable of delivering water or prepared polymer solutions accurately and continuously into designated target zones of the formation under high pressure, high-load, and complex medium operating conditions.

High pressure water injection and polymer injection pumps generate extremely high pressure and stable flow rates through precision drive mechanisms and plunger configurations. During polymer injection, the equipment features excellent low-shear characteristics, which minimize the breakage of polymer molecular chains (such as HPAM) during pumping, thereby maintaining optimal solution viscosity and oil displacement efficiency. Meanwhile, to address the high salinity, suspended particles, and corrosive components in the injection medium, the wetted parts of the pump are typically constructed from high-grade corrosion-resistant alloy materials (such as duplex stainless steel and titanium alloy) and equipped with wear-resistant sealing systems.

High pressure water injection and polymer injection pumps are widely used in onshore oilfield high pressure water flooding, offshore oil and gas platform water injection recovery, produced water re-injection (PWRI) into high-salinity formations, and polymer flooding and SP/ASP flooding in tertiary recovery processes. In addition, the equipment can also be used for acid fracturing prepad fluid injection in oilfield formations and high pressure pipeline testing in oil and gas systems.

When selecting pumping equipment for oilfield water injection and polymer injection, comprehensive consideration should be given to key factors such as the required operating pressure range, flow rate requirements, medium corrosivity, continuous operation reliability, and maintenance convenience. It is crucial to select pumping equipment that can meet the specific oilfield operating conditions while ensuring efficient and safe operation. Elephant Machinery high pressure water injection and polymer injection pumps offer multiple notable advantages, including high injection pressure, precise and controllable flow rates, excellent corrosion and wear resistance, stable and reliable operation, low energy consumption, and low maintenance costs.