Scale Management Tool

Scale Management Tool

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Scale deposits can build up on the exposed surfaces of electrical submersible pump (ESP) components and production tubing, causing early pump failure and production constraints. Initial ESP system design is the first defense against scale. Selecting right-sized systems to avoid excessive pressure drop is your first line of defense. Assuming you have the optimal ESP design for the well conditions, KEFENG offers scale management solution of using chemicals to keep scale from forming as fluid passes through the ESP. For this solution, we use Downhole Dosing Units, tubes in the dosing unit are filled with the solid inhibitor and a calibrated port is installed at the bottom of the tube. During ESP operation formation fluid flows into the downhole unit through perforations. The solid scale inhibitor is dissolved and gets mixed with the formation fluid. The dissolved inhibitor molecules are absorbed on crystal-forming nuclei, preventing scale growth and deposition on ESP impellers, diffusers, and equipment surfaces.

This Model is drifted with the corresponding API tubing drift size.

NOTE: Additional size, weight, end connection etc. are also available on request.

Description

Advantages and features:

  • Self-contained downhole solutions
  • Maintenance-free operation
  • Solids dosing technology releases granulated scale inhibitor while also enabling it to dissolve in reservoir fluids to improve dosing accuracy

Applications:

  • Wells prone to scaling
  • High water concentration in downhole fluids
  • Extremely corrosive conditions
Technical Characters:
Model Outer diameter Inhibitor type Fluid temperature Flow rate Water
FHD-1 35CrMo
3.5 in.
89 mm
Solid 149-167°F, 167-250 °F
65-75 °С, 75-120 °С
1250 bbl/d
199 m3/d
Up to 90 %
4.5 in.
114 mm
Capsules Up to 338 °F
Up to 170 °С
1250 bbl/d
199 m3/d
Up to 100 %
4.5 in.
114 mm
Liquid Up to 338 °F
Up to 170 °С
1250 bbl/d
199 m3/d
Up to 100 %

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