Polyflow

Submersible Tubing

Description
PolyFlow's Thermoflex® Submersible Tubing is designed to work in conjunction with downhole submersible pumps (ESP's) to lift significant volumes of fluid from wells. The tubing can be used with centrifugal, diaphragm, or hydraulic pumps and the continuous tubing is designed to handle the weight of the pump, electric cable and to withstand the hydrostatic pressure for wells to 4,000ft (contact PolyFlow for depths below 4,000ft)
Case studies are available for submersible tubing.

Benefits
The benefits of the tubing versus conventional steel are derived from its inherent corrosion resistance and its low coefficient of friction. The tubing has roughly half the pressure drop of similarly sized steel. This allows the use of smaller diameter tubing to create fluid velocities to lift solids along with the flow stream without creating additional pressure against the pump. 1"(.63"ID) Thermoflex® Submersible Tubing can lift up to 250bbls/day while 1.25" (.88" ID) can lift up to 600bbls/day.

The benefits of Thermoflex® Submersible Tubing include:

• High velocity flow to lift solids from the well improving pump life
• CO2, H2S and Brine corrosion resistance
• Rapid Low Cost Installation

Specifications
Thermoflex® Submersible Tubing comes in sizes from 1" OD to 1.75" OD in pressure ratings varying form 1,000PSI to 3,000PSI (Velocity String/Submersible Tubing Size Chart). Please contact PolyFlow for other sizes and pressure ratings. The tubing liner and jacket is constructed from either nylon or Polyphenylene Sulfide depending upon the corrosive environment of the well and is reinforced with aramid fibers for burst strength and resistance to elongation. The product is continuous and requires a metal termination coupling on each end to lock the braid in place. The customer has a choice of zinc chromate plated carbon steel couplings or duplex stainless depending upon the well environment.

Evaluating a well candidate
The first step is to properly size the tubing to create a minimum critical velocity to lift solids in the flow stream. Once the tubing diameter is selected the dynamic head curve are generated for the specific depth of the well. This curve is then used to select the pump model best suited for the well. Our tubing selection charts can be downloaded:

• Velocity String Submersible Tubing Chart
• Gathering Line Tubing Chart

Again, tubing can be mated will the various pump styles and models available on the market. PolyFlow does provide a questionnaire to help with the tubing selection and can suggest pumps for your application.

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