Stainless steel Well Screens

Transcription

1 Stainless steel Well Screens & Accessories

2 The world s best designed water wells use Johnson screens well screens and accessories When performance is important - there is no equal Johnson Screens is the largest manufacturer of premium water well screens, bringing the best, most costefficient water wells to the industry. Better well development Johnson Screens well screens have very high open area, allowing better access to the entire formation around the screen. Fines and drilling fluid are removed quickly and completely, resulting in better well development. Lower pumping costs The high open area of a Johnson Screens well screen allows water to enter the well freely, resulting in minimal drawdown and less energy expended by the pump. Less maintenance The continuous slot design allows lower entrance velocity of the water, which reduces encrustation rates. The slot design also resists plugging and prevents sand from damaging pumps. Careful design leads to successful screens Johnson Screens will analyze the formation sand to correctly size the well screen A grade of steel with the right level of corrosion resistance is selected Noting the depth of the well, the correct combination of wire and rod that produces a screen with all the necessary strength characteristics is chosen The screen design is determined by aquifer characteristics and desired yield Johnson Screens can supply all of the fittings, welded or threaded, that best suits the method of installation sand control The water well screen is a key component of sand-control systems, either as an integral component of the gravel pack, or as a stand-alone provider of sand control. Johnson Screens well screens, with patented Vee-Wire technology and welded construction, help to prevent screen failure by better controlling the sand. The industry s best product line comes with the industry s best support Johnson Screens does more than just make the world s best well screens; it also supplies technical support that is like having an in-house engineering team with no additional costs. Support services include: Sand analysis of formation materials Screen size recommendation Screen installation suggestions Well construction consultation The Johnson Screens staff includes design engineers, welders, technical support personnel and sales engineers who have been on the factory floor, presented in classrooms and technical seminars, set and pulled screens and run pumping tests. Johnson Screens understands the water well world and is available to assist in any way. 2

3 Johnson screens End fitting and screen connection options Most well screen installations involve a few standard fitting combinations. Telescope size screens typically use a Figure K packer on the screen top and a welded or threaded plate bottom. Pipe size screens attach directly to the casing and usually have plate bottoms. Johnson Screens stocks a variety of other fittings, such as centralizers, shale traps and connecting fittings for quick delivery. Varieties include: Flush threads (Sch and Sch 80) NPT thread Weld ring API couplers Plate bottom Threaded point Threaded cap/plug Locking cap Bail hooks Weld ring x weld ring Weld ring x collar PVC to stainless steel adaptor Quickloc Shur-A-Lock Centralizer Figure TF Washdown Shale Trap Figure K Packer Wirelock Fittings Drive Point R & L Threaded Couplings R & L Threaded Nipples Back Pressure Valves Wash Plugs Di-Electric Coupling Flush Thread 3

4 Johnson screens: more than just screens DI-ELECTRIC COUPLING Johnson Screens di-electric coupling prevents galvanic corrosion in municipal and industrial water well completions. When two dissimilar metals are coupled in water-saturated environments, the less corrosion-resistant metal corrodes faster from the galvanic cell created. This corrosion can be prevented by eliminating the contact between the two metal surfaces. The di-electric coupling uses insulating rings which separate the metals and prevent contact. This feature increases the life of the pipe and, ultimately, the life of the well. Di-electric couplings are available for pipe sizes from 38 to 9 mm ( ). Special sizes or connection adaptors are available on request. FEATURES, ADVANTAGES AND BENEFITS: In the center of the coupling, an insulating sleeve prevents dissimilar metals from making contact and causing corrosion of the casing. This feature greatly extends the life of the pipe for significant long-term savings The coupling has a small OD, only 38 to 51 mm (1.5 to 2 larger than that of the pipe. This feature saves costs by minimizing the size of the hole to be drilled The nominal ID of the string is maintained through the coupling for full design functionality GROUNDWATER AND WELLS Recognized worldwide by engineers and scientists as the authoritative text on hydro-geology, well hydraulics, design, construction and materials. Johnson Screens recognizes the growing importance of environmental engineering. Groundwater and Well s Third Edition includes comprehensive coverage of the accepted practices in environmental well management. This book is a valuable tool for anyone who designs, specifies, drills, samples, manages, or interprets data from monitoring or recovery wells while complying with federal state and local laws. Groundwater and Wells Third Edition can be purchased from the Johnson Screens web site at 4

5 Technical information: Johnson screens water well drive points Johnson screens wire models and 316 stainless steel Screen Weight 1 : / Max Depth: Tensile Strength 2 : Column Strength 3 : ,500 5,800 2P ,200 8,700 2P Sand Point ,0 4,200 3P All Drive ,700 13,0 4P All Drive ,300 21,0 4P - Double Drive ,300 21,0 Open Area - ²/ of Screen Collapse Strength - PSI 4 Screen Slot - Thousandths of an Inch Johnson screens wire models and 316 stainless steel Screen Weight 1 : / Max Depth: Screen Slot - Thousandths of an Inch ,1 5,804 5,642 5,417 5,078 4,514 2P ,349 2,215 2,153 2,067 1,938 1,722 2P Sand Point ,825 1,721 1,673 1,6 1,506 1,338 3P All Drive P All Drive P - Double Drive Tensile Strength 2 : Column Strength 3 : ,500 5,800 2P ,200 8,700 2P Sand Point ,0 4,200 4P All Drive ,300 21,0 Open Area - ²/ of Screen Collapse Strength - PSI 4 Screen Slot - Thousandths of an Inch Screen Slot - Thousandths of an Inch ,496 2,396 2,3 2,280 2,176 1,993 2P P Sand Point P All Drive Transmitting capacity (gpm/ of screen) = open area x 0.1 /sec P - pipe size 1. Weight is based on slot construction, no fittings 2. Tensile and column strength includes 30 percent safety factor 3. Column strength is based on 5 screen barrel length 4. Calculated collapse values - no safety factor included 5

6 Technical information: Johnson screens small diameter stainless steel well screens Johnson screens Water well and environmental screens: wire construction and 316 stainless steel Screen Weight 1 : / Max Depth: Tensile Strength 2 : Recom. Hang Weight 3 : Column Strength 4 : ,200 2, 3, 2P* ** 1.9 2,000 1,500 2P/3T ,0 1,700 2, 2.5P ,200 2, 3, 3P* ,200 2, 3, 3P/4T ,200 2, 3, 4P* ** 3.7 4,800 2,0 3,700 4P/5T ,800 2,0 3,700 5P/6T , 2,800 4,200 Open Area - ²/ of Screen Screen Slot - Thousandths of an Inch Collapse Strength - PSI Screen Slot - Thousandths of an Inch ,1 5,6 5,491 4,2 4,393 3,954 3,5 2P* ,0 2,004 1,9 1,754 1,9 1,3 1,275 2P/3T ,3 1,802 1,752 1,577 1,2 1,262 1, P ,164 1, 1, P* P/4T P* P/5T P/6T Transmitting capacity (gpm/ of screen) = open area x 0.1 /sec P - pipe size, T - telescope 1. Weight is based on slot construction, no fittings 2. Tensile and column strength includes 30 percent safety factor 3. Recommended hang weight is 50 percent of calculated tensile strength 4. Column strength is based on 5 screen barrel length 5. Calculated collapse values - no safety factor included * Alternate constructions for water well and environmental ** ID listed is confirmed clear for environmental 6

7 Johnson screens Water well and environmental screens: wire construction and 316 stainless steel Screen Weight 1 : / Max Depth: Tensile Strength 2 : Recom. Hang Weight 3 : Column Strength 4 : ,200 2, 3, 2P* ** 1.5 2,000 1,500 2P/3T ,0 1,700 2, 2.5P ,200 2, 3, 3P* ,200 2, 3, 3P/4T ,200 2, 3, 4P* ** 2.9 4,800 2,0 3,700 4P/5T ,800 2,0 3,700 5P/6T , 2,800 4,200 Open Area - ²/ of Screen Screen Slot - Thousandths of an Inch Collapse Strength - PSI Screen Slot - Thousandths of an Inch ,343 2,272 2,227 2,063 1,8 1,3 1,8 2P* P/3T P P* P/4T P* P/5T P/6T Transmitting capacity (gpm/ of screen) = open area x 0.1 /sec P - pipe size, T - telescope 1. Weight is based on slot construction, no fittings 2. Tensile and column strength includes 30 percent safety factor 3. Recommended hang weight is 50 percent of calculated tensile strength 4. Column strength is based on 5 screen barrel length 5. Calculated collapse values - no safety factor included * Alternate constructions for water well and environmental ** ID listed is confirmed clear for environmental 7

8 Technical information: Johnson screens Free-flow 304 Stainless steel screens Johnson screens Large diameter free-flow screens: sizes 6P - 16T Max Depth: Weight 1 : / Recom. Hang Weight 2 : Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch P ,300 4,300 8,800 8, T P , 20, T , 12, P ,0 15, T , 17, P , 17, T ,300 14,300 14, P / 16 T , 17, 17, Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld 316 stainless steel screen technical information is available upon request P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x 0.31 Telescope size screens (le) install through the casing and usually have a Figure K packer as upper fitting. Pipe size screens (right) usually have weld rings at each end and attach directly to the casing. 8

9 Johnson screens Large diameter free-flow screens: sizes 16P - 36p Max Depth: Weight 1 : / Recom. Hang Weight 2 : Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch P / 18 T ,300 19,300 19,300 43, P / 20 T ,800 19,800 19,800 37, P , 23, 23, 43, T ,0 26,0 26,0 49, P /26 T ,000 22,000 41, P ,700 23,700 44, T ,700 23,700 44, P / 36 T ,500 27,500 51, P ,0 59, Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld 316 stainless steel screen technical information is available upon request P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x

10 Technical information: Johnson screens Hi-flow 304 stainless steel screens Johnson screens Large diameter hi-flow screens: sizes 6P - 16T Max Depth: Weight 1 : / Recom. Hang Weight 2 : Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch P ,300 4,300 8,800 8, T P , 12, T , 12, P ,0 15, T , 17, P , 17, T ,300 14, P / 16 T , 17, Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld 316 stainless steel screen technical information is available upon request On average, Hi-Flow screens have a 30 percent higher open area P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x 0.31

11 Johnson screens Large diameter hi-flow screens: sizes 16P - 36P Max Depth: Weight 1 : / Recom. Hang Weight 2 : Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch P / 18 T ,300 19,300 36, P / 20 T ,800 37, P , 23, 43, T ,0 26,0 49, P /26 T ,000 22,000 41, P ,700 23,700 44, T ,700 23,700 44, P / 36 T ,500 27,500 51, P ,0 59,800 59, Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld 316 stainless steel screen technical information is available upon request On average, Hi-Flow screens have a 30 percent higher open area P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x

12 Technical information: Johnson screens hicap high capacity low carbon steel screens Johnson screens Large diameter hicap screens: sizes 6P -18T Max Depth: Weight 1 : / Recom. Hang Weight 2 : Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch P , 14, , T ,0 18, 182 1, P , 19, T ,700 23, P ,0 25,0 25, T ,000 29,000 29, P ,000 29,000 29, T , 23, 23, P / 16 T , 28, 28, P / 18 T ,700 31,700 31, Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x

13 Johnson screens Large diameter hicap screens: sizes 18P - 36P Max Depth: Weight 1 : / Recom. Hang Weight 2 : Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch P / 20 T , 32, 32, P , 38, 38, T ,500 43,500 43, P /26 T ,,,, P ,700 51,700 51,700 51, T ,700 51,700 51,700 51, P / 36 T ,, P ,800 69,800 69, Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x

14 Technical information: Johnson screens hicap high capacity low carbon steel galvanized screens Johnson screens Large diameter hicap screens: sizes 6P - 16T 6 P Max Depth: Weight 1 : / 6.3 Recom. Hang Weight 2 : 5, 9, Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch T , 24, P ,300 13,300 26, T ,000 15,700 31, P ,800 16,800 33, T ,300 19,300 38, P ,300 19,300 38, T ,700 15,700 31, P / 16 T ,700 18,700 37, Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x

15 Johnson screens Large diameter hicap screens: sizes 16P - 36P 16 P / 18 T 18 P / 20 T 20 P 24 T Max Depth: Weight 1 : / Recom. Hang Weight 2 : 21, 21, 42, 21,700 21,700 43,300 25,300 25,300 28,0 28,0 Collapse Strength 1 : PSI Intake Area 3 - In²/ of Screen Screen Slot in Thousandths of an Inch P /26 T , P.0 51, T , P / 36 T , Screens are available in up to foot lengths of continuously wrapped screen with no mid-weld P - pipe size, T - telescope 1. Based on slot size (collapse values contain no safety factor) 2. Recommended hang weight is 50 percent of the calculated tensile strength 3. Transmitting capacity in gpm/ of screen = open area x

16 Technical information: Johnson screens muni-pak pre-packed Well screens Johnson screens muni-pak screens Muni-Pak screens are pre-packed, providing numerous features and advantages for the contractor and well SPECIFICATIONS owner. A smaller borehole, stronger construction, thinner filter pack and maximized open area all combine to produce a time, money and energy saving well screen. ¹ Approx. Screen ID Approx. Screen OD Media Annular Thickness Inner Screen Open Area - ²/ of Screen Screen Slot in Thousandths of an Inch Outer Screen Open Area - ²/ of Screen Screen Slot in Thousandths of an Inch x x x x x x x x x x x Approx. Screen Weight / Muni-Pak screen vs. Standard Rod Based Screen Nominal ² () Collapse Strength (PSI) Tensile Strength (PSI) Rod Based Muni-Pak Rod Based Muni-Pak Rod Based Muni-Pak 2 2 x 4 1,9 16,500 4,300 12, x 5 5 5,650 5,200 15, x ,830 6, 18, x 7 4 1,0 7,000 20, x , 41, 8 8 x 1,1 24,200 50,000 x ,800 81, x ,200 87, x 16 1,1,200 95, x ,200 1, x , ,200 Standard filter pack sizes Slot Carbolite Filter Pack n/a / / 20/ /20 16/ n/a / /18 n/a 0.0 8/14 8/ /12 n/a 1. Other sizes available upon request 2. Values compare of Muni-Pak vs of rod based screen 16

17 Technical information: Johnson screens Pipe based well screens Johnson screens pipe based well screens Pipe based well screens combine the hydraulic efficiency of wire-wound screens with the great strength of pipe. Because of the strength of the pipe liner, the wrap wires can be smaller, which produces greater open area. The longitudinal support rods on the screen jacket create channels which direct incoming flow to the nearest pipe perforation. Screen and pipe are welded to make a rugged, reliable unit suitable for deep vertical wells, as well as horizontal remediation and supply wells. Johnson screens Stainless steel pipe based well screens Pipe OD Pipe Open Area Per Foot ² Screen OD Approx. Weight Open Area - In²/ of Screen Screen Slot in Thousandths of an Inch Weight is based on standard wall pipe, except for

18 Technical information: Johnson screens casings Johnson screens offers a variety of casings to suit many well applications Common 304 stainless steel casings Common sch low carbon steel casings Pipe Nom. Diam Sch OD ID ,770 1,682 1, Weight Per Collapse Strength PSI 2,445 1,362 3,271 4,736 1,0 2,704 4, , ,050 2,972 Pipe Nom. Diam. OD ID Weight Per Collapse Strength PSI , , , , , , , , , , , , * , , , , , * * Standard wall 18

19 Format for specifying Johnson screens Well screens GENERAL: Well screens shall be of the continuous slot design to provide maximum open area, to reduce entrance velocity, increase hydraulic efficiency and promote more effective development. The well screens shall be constructed out of Vee-Wire trapezoidal wire, continuously wrapped around an array of equally spaced support rods of the same material. Each junction of wire/rod contact shall be resistance welded. The screens and end fittings shall be made of (material). The well screens shall be manufactured by Johnson Screens, or approved equal. COLLAPSE STRENGTH: Well screens to be inches OD, continuous slot wire-wrapped (material), designed to withstand a minimum collapse pressure of psi for a inch slot opening. The surface wire shape shall cause the slot opening to widen inwardly to minimize clogging. Surface wrap-wire height shall be inch to provide the desired collapse strength. The wrap-wire face width shall be of minimum dimensions to provide percent open area at the anticipated inch slot opening. TENSILE STRENGTH: The minimum screen tensile strength must exceed at least twice the total weight of the screen and any standard wall blank casing suspended below the top screen joint. The tensile strength shall be a minimum of pounds. (Tensile strength is total rod area times material yield strength). SCREEN CONFIGURATION: Screens shall be manufactured in various lengths complete with (material) weld rings attached to each end. The weld rings shall be standard available lengths as requested by the contractor and approved by the engineer. Screen submittals Upon request, the screen manufacturer shall provide a submittal and schematic drawing of the proposed screen design. The documents shall include the OD, ID, construction materials, slot size, approximate weight per foot, wrap wire length, wrap wire height, collapse strength, percent open area, inlet open area per foot, transmitting capacity per foot, number of support rods, diameter of support rods, total cross sectional rod area, material yield strength, tensile strength, column load and recommended hang weight. muni-pak screens GENERAL: Muni-Pak screens shall be of the continuous slot design to provide maximum open area, to reduce entrance velocity, increase hydraulic efficiency and promote more effective development. Both the inner and outer screens shall be constructed out of Vee-Wire trapezoidal wire, continuously wrapped around an array of equally spaced support rods of the same material. Each junction of wire/rod contact shall be resistance welded. The screens and end fittings shall be made of (material).the well screens shall be manufactured by Johnson Screens, or approved equal. DIAMETER: The Muni-Pak screen shall be inch pipe size inner screen by inch pipe size outer screen. COLLAPSE: The dual screen assembly shall be manufactured with a wrap wire designed to yield a minimum collapse pressure of psi at a design slot opening of inches. The wire shape shall cause the slot opening to widen inwardly to minimize clogging. OPEN AREA: The inner screen shall provide square inches of inlet area per foot of screen at the design slot size. The outer screen shall be of the same slot as the inner screen. The slot size and filter pack are to be selected on the basis of a sieve analysis of the water bearing formation. FILTER PACK: The annulus between screens shall be filled with ceramic or glass beads of uniform size and excellent sphericity. The pack size shall be filter size. The pack material shall be installed and compacted by vibrating the unit in a vertical position, while being filled. The top and bottom filter seal plates shall be secured by welding. TENSILE STRENGTH: The minimum screen tensile strength must exceed at least twice the total hang weight of the screen and blank casing below the top screen joint. The tensile strength shall be a minimum of pounds. (Tensile strength is total rod area times material yield strength). SCREEN CONFIGURATION: Screens shall be manufactured in various lengths with a maximum of feet length overall. Screens shall be complete with (material) and fittings attached to each end. Standard weld rings are six inches. Weld rings of longer lengths, or threaded fittings may be requested. Screen barrels shall be provided in standard (overall or full) lengths which (include or exclude) the weld ring lengths. Lengths and end fitting configuration to be requested by the contractor and approved by the engineer. 19

20 Providing over years of experience, innovation and customer satisfaction. Contact us today. OUR WIDE RANGE OF PRECISION ENGINEERED EQUIPMENT IS SUITABLE FOR MORE APPLICATIONS THAN EVER. Turn to Johnson Screens to help maximize your operational efficiency and find longterm, trouble-free solutions. Discover our ever-expanding range of products, designed with your needs in mind: Architecture and construction Column covers Custom lighting Exterior applications Furniture Interior applications Grating Wall cladding Steel Brite General Industrial Centrifuge baskets Flat panel screens Inline strainers Laterals Nozzles Sieve screens and boxes Support grids Water treatment equipment Mineral and aggregate processing Vee-Wire screening systems Polyurethane screening Rubber screening systems Woven wire screening systems Screening accessories Wear linings Mill linings Fabrication HDPE pipe Water treatment equipment on-site services Installation Inspection Repair Assistance Supervision Pulp and paper Effluent treatment equipment Fiber line equipment Pressure screens, baskets, rotors Progressive Cavity Pumps Pulpers, extraction plate, rotors Reject handling equipment, drums Sieve bends, screen panels Water treatment equipment Refining and petrochemical Centerpipes Distributor trays Inlet baskets Outlet baskets Overlay grids Scale traps Scallop screens Vessel internals Water processing and fluid treatment Solids screening Complete line of headworks products Conveyors and compactors Package plants Sludge treatment Clarification Filtration Biological and advanced treatment Sludge dewatering and handling Industrial pumps Process performance chemicals Water well Nu-Well chemicals PVC casings and risers PVC drop pipe PVC well screens Pre-packed well screens Rod-based well screens Stainless steel casings and risers Well screen fittings and accessories AUSTRALIA - ASIA PACIFIC Johnson Screens Australia TEL.: FAX: salesasiapacific@johnsonscreens.com EUROPE - MIDDLE EAST - AFRICA Johnson Screens France TEL.: +33 (0) FAX : +33 (0) saleseurope@johnsonscreens.com A Weatherford Company NORTH, SOUTH & CENTRAL AMERICA Johnson Screens USA TEL.: FAX: salesamerica@johnsonscreens.com Copyright 2011 All rights reserved to Johnson Screens, Inc