POLYETHYLENE SPECIALTY PRODUCTS HMW-HDPE “SIPHON STRING” ENGINEERED FOR DOWN HOLE APPLICATIONS PLASTIC MANUFACTURES “SINCE 1953” POLYTUBES Gas Gathering Piping Products POLYTUBES HIGH MOLECULAR WEIGHT (HMW) High Density Polyethylene Pipe for Siphon String General Information POLYTUBES extrudes its polyethylene pipe from a High Molecular Weight (HMW) High Density Polyethylene (H.D.P.E.) hexene copolymer resin manufactured, using a Novapol resin. This material provides an excellent combination of toughness, durability and environmental stress crack resistance for pressure and non pressure pipe applications. POLYTUBES polyethylene piping systems offers some unique characteristics and allow the design engineer to take advantage of these attributes such as low cost installation, excellent rough handling capability, cold temperature brittleness resistance, excellent weather chemical resistance, will not corrode and long service life with minimal maintenance requirements This material is listed by the Canadian Standards Association (CSA) and Plastic Pipe Institute (PPI) as a PE-3408 resin with a hydrostatic design basis (HDB) of 1600 psi for water at 23oC. It complies with ASTM D-1248 as a Type III Class C, Category 5, Grade P34 material and with ASTM D-3350 as a 345464C cell class material. Identification of POLYTUBES polyethylene pipe by cell classification is as follows: PROPERTY Density Melt Index Flexural Modulus Tensile Strength, yield Slow Crack Growth (Pent Test) Hydrostatic Design Basis Colour/UV Stabilizer NOMINAL VALUE 0.955 gm/cm3 <0.10 dg/min 135,000 psi 3,300 psi 100 hrs 1600 psi Carbon Black CELL CLASS 3 4 5 4 6 4 C POLYTUBES “Siphon” Gas Gathering Piping Products String Commonly referred to as a velocity string for continual fluid lifting from gas wells. POLYTUBES extrudes this pipe product from a specific High Molecular Weight (HMW) High Density Polyethylene (H.D.P.E.) hexene copolymer resin. The design and material content have been engineered for installations with well bore pressures of 2100 psi and landing depths up to 850 meter (2700 ft). The Outside Diameter pipe size increments designed to be utilized with conventional tubing service units and hang off equipment. Efficiency Advantages • A controlled smooth seamless bore, with a roughness factor 30 times better than steel • A non-corrosive material that will not corrode or restrict flow over time. • Any solids produced in the well will not adhere as readily to this material. (Solids that do adhere to the pipe I.D.are easily dislodged with well treatment additives). • Excellent resistance to well treatment chemicals. • Excellent abrasion resistance, specifically sand. • Ask us about our polymer technology to achieve depths up to 1600 meters (5200 ft). POLYTUBES Gas Gathering Piping Products Pipe Properties Units Pipe Ring Tensile Strength @ Yield Pipe Density Carbon Black Content Thermal Stability Long Term Hydrostatic Strength @ 23oC Long Term Hydrostatic Strength @ 60oC Elevated Temperature Sustained Pressure Tests @ 80oC 725 psi hours 480 psi hours Coefficient, of Linear Thermal Expansion Thermal Conductivity Roughness Coefficient Cell Classification Typical Values MPa g/cm3 % o C psi psi ASTM Test Method 23 0.955 2.1 260 1600 1000 1000 3600 in./in./oF BTU/hr/ft2/°F/in ft PE 345464C 1.2x10-4 2.7 5.0x10-6 D2290 D1505 D1603 D3350 D2837 D2837 n/a n/a D696 C177 n/a D3350 Resin Properties Flow Rate Density Tensile Strength at Yield Elongation (@Break) Izod Impact Resistance @ 23oC Flexural Modulus (@2% Strain) Environmental Stress Crack Resistance Coefficient, of Linear Thermal Expansion dg/min g/cm3 MPa % ft.-lb./inch psi hours in./in./oF 8.5 0.947 22.8 850 7 125,000 >10,000 0.8x10-4 D1238 D1505 D638 D638 D256 D790 D1693 D696 POLYTUBES PIPE DIMENSIONS 1600 P.S.I. HDB POLYTUBES offers a comprehensive range of H.D.P.E. pipes based on outside diameters. The design pressure for POLYTUBES pipe is determined in accordance to the Standard ISO equation shown below: POLYTUBES Gas Gathering Piping Products Calculation: P= 2S R−1 x F Where: P design pressure, psi S hydrostatic design basis (HDB) at 23°C,=1600 psi (HDB=11.03 Mpa for PE-3408) F service fluid factor (0.5 is recommended for water) R ratio of pipe outside diameter to pipe minimum wall thickness. Note: The Environmental or temperature factor is an additional de-rating factor to compensate for temperatures higher than 23°C. (Consult your POLYTUBES representative for higher temperature de-rating factor) The recommended continuous working pressures for POLYTUBES "SIPHON STRING" are identified by the SDR in the attached table. (* Standard Dimension Ratio = Outside Pipe Diameter Minimum Pipe Wall Thickness ) With the material criteria conforming to the requirements of the following Standards: * CAN/CSA 137.1 * CGSB-41-GP-25M * ASTM F-714 * ASTM D-3035 * AWWA C901/C906 * API 15LE ISO 9001-2000 Certified POLYTUBES PE-3408 HIGH MOLECULAR WEIGHT HIGH DENSITY POLYETHYLENE (HDPE) SIPHON STRING TUBING Average Outside Diameter Nominal Wall Thickness Average Internal Diameter Standard Dimension Ratio Average Pipe Weight Average Pipe Weight Internal Pipe Area 23°C Continuos Operating Pressure Burst Pressure Critical Buckling Pressure (in) (in) (in) (SDR) (lb/ft) (lb/m) (in2) (psi) (psi) (psi) 1.25 1.25 1.25 0.375 0.325 0.275 0.500 0.600 0.700 3.33 3.85 4.55 0.441 0.405 0.363 1.446 1.331 1.191 0.196 0.283 0.385 687 560 451 2743 2240 1800 2100 1350 800 1.50 1.50 0.350 0.300 0.800 0.900 4.29 5.00 0.545 0.489 1.787 1.604 0.502 0.636 486 400 1940 1600 950 600 1.75 1.75 1.75 0.375 0.325 0.300 1.000 1.100 1.150 4.67 5.38 5.83 0.699 0.630 0.593 2.293 2.068 1.944 0.786 0.949 1.308 436 365 330 1740 1460 1325 750 500 390 2.00 0.375 1.25 5.33 0.829 2.720 1.227 270 1475 500 2.375 2.375 2.375 2.375 0.513 0.488 0.463 0.438 1.350 1.400 1.450 1.500 4.63 4.87 5.14 5.43 1.294 1.249 1.202 1.153 4.247 4.098 3.943 3.782 1.429 1.538 1.652 1.767 440 410 385 360 1761 1653 1548 1445 780 670 580 480 2.875 0.663 1.550 4.34 1.985 6.511 1.886 475 1916 950 “Continuos Operating Pressure” based on 50 year life at a 2:1 safety factor. “Burst Pressure” based on 2 minute burst pressure with no safety factor. “Critical Buckling” based on 50 year and 0% ovality. POLYTUBES Gas Gathering Piping Products Normal Packaging Configurations POLYTUBES pipe is available in the following packaging configuration: Reel dimension will be limited to a maximum pipe weight of 1800 kgs (4000 lbs) REELS For actual REEL dimensions Available: 25.4 mm (1”) to 31.8 mm (1 1/4”) 2500 meter (8200 ft) 38.1 mm (1 1/2”) to 44.5 mm (1 3/4”) 1500 meter (4900 ft) 50.8 mm (2”) 1000 meter (3200 ft) quantity per truckload, please discuss with your POLYTUBES representative. OTHER PRODUCTS MANUFACTURED BY POLYTUBES • • • • • Polyethylene pipe for natural gas services Polyethylene pipe for gas gathering applications Wide range of diameters of pipe in Low and Medium Density Polyethylene for various applications Custom extrusion available upon request. Conduit PLASTIC MANUFACTURES - “SINCE 1953” Courtesy of Polytubes September 1997