!" #$%&' )*'+$,- + Wellhead systems with electrical submersible pumps are exported worldwide for water or oil extraction.

Transcription

1 !" #$%&' )*'+$,- + Grayling. Mfg. Ltd., established in 1985, is a Canadian company specializing in the manufacture of wellhead equipment and accessories. Wellhead systems with electrical submersible pumps are exported worldwide for water or oil extraction. Custom design, machining, and fabrication services are provided under the ISO9001:1994 quality assurance program. API 6A latest edition requirements are maintained for the oil and gas industries. Starting with an approved drawing, programming CNC code, working with traceable materials and ending with dimensional verification reports for finished products adds up to objective evidence that with Grayling Mfg. Ltd., you are assured that all products and services are provided with our commitment to excellence. With over 12,000 square feet of assorted machining centres and 10 ton fabrication capability, Grayling Mfg.Ltd. has provided services to the oil and gas, the pulp and paper, and the pipeline sectors. 1

2 XMAS Tree Components 2

3 TABLE OF CONTENTS Section I Wellhead Equipment Section II ESP Equipment Section III Progressive Cavity Pump Equipment Section IV Services Section V Quotation 3

4 Section I - Wellheads Type GF Casing Head Type GF Slip and Seal GF Slip Assembly GF-A Slip Packoff Assembly GLF-A Slip Packoff Assembly GF Primary Packoff Casing Head Accessories GF-A Casing Heads GLF-A Casing Heads GFI Intermediate Spools GF-L Casing Heads GF-GL Casing Heads GRF Tubing Heads GRF Tubing Spools Tubing Hanger and Wraparound Hangers for GRF Tubing Heads GRSF Tubing Heads GRSF Tubing Hangers GOF Secondary Packoff Assembly GRF Secondary Packoff Assembly GT and GF Adapter Flanges Adapter Flanges GX and GXM GX-2 and GX-2M Hangers Bottom Hole Test Adapters Flange Charts Section II - ESP Wellheads Type SAPA Universal Adapter Spools Type FA Flanged Universal Adapter Spools Type SA Universal Adapter Spools Type A Flanged Universal Adapter Spools Type SAW Universal Waterwell Spools Section III - BOPs, Progressive Cavity Blow Out Preventers Models 550, Progressive Cavity Pump Drive Assembly Section IV - Services 4

5 Nominal : OR 9 GF casing bowls use a full opening, tapered bore design and accept either GF casing slip and seal assemblies or a GF threaded casing hanger. Lower connections are available in threaded end or slip-on for welding. The slip-on lower connection is furnished with a 1/2 test port. Outlets are standard 2 line pipe. Slip-on Bottom/TWO-2 LPSO Bottom Connection Top Flange /Work Pressure Part Number 5 1/2 OD psi OD psi OD psi OD 9 psi OD 9 psi /8 OD 9 psi /8 OD 9 psi For shallow to medium depth wells this slip and seal assembly provides a slip bowl and primary packoff. Nominal (inches) 9 Part Number / Casing OD (inches) 4 1/2 5 1/

6 The GF slip assembly consists of slip segments and slip bowl which can easily be wrapped around the casing. The GF casing hanger must be run in conjunction with the GF primary packoff to effect an annular seal since the GF slip assembly has no automatic seal. Nominal Part Number / Casing OD (Inches) (Inches) 4 1/2 5 1/ /8 8 5/8 9 5/8 10 3/4 3/4 13 5/ / / / / The GF-A slip packoff assembly combines packoff slip bowl and slips into a single unit. The packoff automatically seals the casing annulus below the slips when casing load is applied, thus allowing annulus packoff before removing blowout preventer and cutting casing. This wrap-around hanger is easy to install, simple construction and few parts make the GF-A easy and economical to repair, and the individual tapered slip Nominal Part Number / Casing OD (Inches) (Inches) 4 1/2 5 1/ /8 8 5/8 9 5/8 10 3/4 3/4 13 5/ / / / / The GLF-A slip packoff assembly is a heavy duty automatic type casing hanger designed for use in the GLF casing head. The step-tapered slip will support extreme casing loads with the minimum casing deflection. The automatic seal below the slip segments, is activated by casing weight, giving a positive annular seal. Nominal Part Number / Casing OD (Inches) (Inches) 4 1/2 5 1/ /8 8 5/8 9 5/8 10 3/4 3/4 13 5/ / / / /

7 The GF primary seal, used in conjunction with the GF casing hanger, provides a positive annulus packoff after the casing has been suspended and cut off. Nominal Part Number / Casing OD (Inches) (Inches) 4 1/2 5 1/ /8 8 5/8 9 5/8 10 3/4 3/4 13 5/ / / / / The Grayling line includes plug type testers and bowl projector retrieving tool to fit all nominal sizes of casing head bodies and tubing heads, and are available with any standard tool joint. The test plug is assembled in the drill string and lowered to its seat in the casing head or spool body. Pipe rams of the preventers are then closed test pressure is applied below the rams. Blind rams can be tested in the same manner after removing the drill string. Other casing head accessories include retrievable wear bushings which protect the inner contour of casing head bodies or spools during drilling operations. When wear bushings are used, either hold down screws in the top flange of the casing head body or hold-down flange with hold down screws is required. Nominal Bore Part Number (Inches) (Inches) /8 12 1/ Nominal WP Bore Part Number (Inches) (PSI) (Inches) 9 8 3/ / /8 13 1/

8 The GF-A is straight-bore casing head that accepts either of the two heavy duty interchangeable hangers. Each of these hangers (GF and GF-A) can support weight beyond the joint strength of the pipe itself, with minimum casing deflection. Both can be lowered through blowout preventers. The GF-A straight-bore prevents test plugs from wedging when pressure is applied, reduces maintenance costs, avoids damage to sealing area by drill bits and permits hanging more casing weight. These casing heads are usually furnished with two 2 line pipe threaded outlets, but larger outlets and flanged end outlets can be provided if desired. Bottom of casing heads can be female or slip-on type for welding. When using bowl protector in GF-A casing heads, a hold down flange with lock screws can be furnished. Bottom Connection Slip On Bottom / TWO œ 2 LPSO * Slip On Bottom / TWO œ2 1/16 FSO * Top Flange / Work Pressure Part Number Bottom Connection Top Flange / Work Pressure Part Number 8 5/8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /4 OD /4 OD /4 OD 10 3/4 OD /4 OD 10 3/4 OD /4 OD 13 5/ /4 OD 13 5/ /4 OD 13 5/ /4 OD 13 5/ /8 OD 13 5/ /8 OD 13 5/ /8 OD 13 5/ /8 OD 13 5/ /8 OD 13 5/ /8 OD 13 5/ OD 16 3/ OD 16 3/ OD 16 3/ OD 16 3/ OD 16 3/ OD 16 3/ OD 21 3/ OD 21 3/ OD 21 3/ OD 21 3/ OD 21 3/ OD 21 3/ The GLF casing heads have the same features as the GFA except for a deeper bore to accept the GLF casing hanger which is designed to handle the heavier loads of deep well casing programs. * LPSO = Line Pipe Outlet FSO = Flanged Outlet Slip On Bottom / TWO œ 2 LPSO* Slip On Bottom / 2 œ 2 1/16 FSO* Bottom Connection Top Flange / Work Pressure Part Number Bottom Connection Top Flange / Work Pressure Part Number 8 5/8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /8 OD /4 OD /4 OD /4 OD /4 OD /8 OD 13 5/ /8 OD 13 5/ /8 OD 13 5/ /8 OD 13 5/ OD 16 3/ OD 16 3/

9 GFI intermediate spools have the same top bowl configuration and operation capabilities as the GF casing heads. The bottom prep configurations allows the use of all GF standard secondary seals with bit guides. Bottom Connection Top Connection 2 L.P. Outlets 2 1/16 Studded / / / / / / / GF-L ( L designates locking pins) is the same as the GF but also has locking pins located in the top flange to enable the user to lock-in a bore protector without using a hold-down flange. All internal components (slip assemblies, packoffs, bore protectors, test plugs) usable in the GF casing heads may also be used in the GF-L casing heads. The GF-GL is the same as the GF-L but also has a bottom base plate prep for use with a landing base. All slip assemblies and primary seals usable in the GF casing heads may also be used in the GF-GL casing heads. 9

10 The type GRF tubing head is a full-opening, tapered-bore head. It is available with API top and bottom flanges, or with threaded or slip-on type bottom for welding. Normally, 2 L.P. outlets are provided. Larger outlets are available upon request. All studded outlets are prepared to accept V-R valve removing plugs. This feature makes it possible to replace full-opening valves under pressure. API flanged blowout preventers or drilling master gates can be placed directly on top flanges. All hangers for the GRF will pass through full-opening preventers or drilling gates. The GRF tubing head has lockdown screws strong enough to hold down all styles of tubing hangers. These screws provide additional compression on the annulus packing. Flanged bottoms available on the GRF include GRF secondary seals. All flanges have test ports for testing the secondary seal and the primary seal of the casing head below. The GRF accepts all GRAYLING hangers. Inches Top Connection WP (PSI) Bottom Connection Threaded Bottom Connection Part Number Slip on Bottom Connection / /2 5 1/ /8 8 5/8 13 3/8 4 1/2 5 1/ / Bottom Connection Top Connection Part Number WP WP 2 L.P. 2 Studded (Inches) (PSI) (Inches) (PSI) Outlets Outlets / / / /

11 Nominal Tubing Thread Part Number (Inches) (OD Inches) GR-1 GP-1 GX-1 GW Upset /2 Upset The GR-1 tubing hanger is a threaded mandrel hanger with packing rings for annulus packoff. The GR-1 tubing hanger is a threaded mandrel hanger with o -ring seals for annulus packoff. This tubing hanger comes with threaded back pressure valve preparation. The GX-1 tubing hanger is a threaded hanger mandrel hanger with o -ring seals for annulus packoff and an extended neck with o -ring seals to packoff the tubing head adapter flange. This tubing hanger comes complete with threaded back pressure valve preparation. The GW-1 tubing hanger is a slick-joint wraparound hanger which can be wrapped around any joint of tubing, not requiring a polished joint. The GW-1 can be lowered through BOP equipment and locked in place, thus allowing the BOP equipment to be removed while keeping the well under control at all times. The upper section of the christmas tree is installed on the tubing threads. This permits the operator to maintain control of the well while manipulating the tubing to set the packer. The GW-1 tubing hanger offers the advantage of holding pressure from both top and bottom.

12 The GRSF tubing head is a straight-bore tubing head. Available in working pressures up to 15,000 psi, and sizes to meet all requirements. GRSF tubing heads are offered with a variety of tubing hangers for single and multiple completions along with the GRF and GOF secondary seals. The GRSF tubing head comes standard with V-R valve removal threads and high-strength locking pins to firmly hold down all tubing hangers. Bot Connection Top Connection Outlet Part WP WP WP Number (Inches) (PSI) (Inches) (PSI) (Inches) (PSI) * * * /16 2 1/ /16 2 1/ / /8 13 5/ / /16 * - Full openings to 7 5/8 casing The GPS-1 is a straight-bore compression seal type mandrel available with and without back pressure valve threads. The GWS-1 is a slick joint wraparound tubing hanger which does not require a polished joint and will hold pressure from both sides. Bowl Nominal Part Number (Inches) Box Thread (OD in Inches) 3 1/2 Upset 9 3 1/2 Upset 4 1/2 Upset 3 1/2 Upset Tubing Mandrel (DS-3) Tubing Wraparound (DS-1)

13 - Installs in bottom of casing spools and tubing heads to adapt them to different casing heads. - Interference-type seals with non-extrusion backup rings provide secondary seal. Nominal Flange (Inches) 9 Casing OD (Inches) 4 1/2 5 1/2 4 1/2 5 1/2 7 Part Number Installs in bottom preparation of casing spools and tubing heads. The packoff is held in place by an easily installed snap ring. -Provides a pressure-energized secondary seal. -Available in different ID and OD combinations to serve as a reducer bushing to adapt casing spools and tubing heads to different casing sizes. Nominal Flange (Inches) /8 Casing OD (Inches) 4 1/2 5 1/2 4 1/2 5 1/ /8 4 1/2 5 1/ /8 8 5/8 9 5/8 Part Number

14 The type GT and GF tubing head adapters are threaded female for tubing suspension for use either with the GR-1 or GW-1 wraparound tubing hanger, or the type GP-1 threaded mandrel hanger. (inches) WP (PSI) Top Thread OD (Inches) Bottom Thread OD (Inches) Part Number Ring Groove API 3 1/2 Upset 3 1/2 Upset 3 1/2 Upset 3 1/2 Upset R-46 R-46 Bottom Connection Top Connection Ring Groove (Inches) WP (PSI) (Inches) WP (PSI) Tubing OD (nches) Part Number API Bottom API Top 2 1/16 2 1/16 2 9/16 2 9/16 2 1/16 2 1/16 2 9/16 3 1/8 2 1/16 2 9/16 3 1/8 1,900 Upset 3 1/2 Upset 3 1/2 Upset R-46 R-46 R-46 R-23 R-23 R-26 R-27 R-23 R-24 R-27 R-31 R-21 R-27 R-35 14

15 The GX-2 hanger and adapter flange arrangement provides a compression seal on the bottom of the hanger (activated by tubing weight) and an o-ring on top provided by the extended neck slip fit into the seal pocket of the mating GX flange. Part Number (Inches/PSI) BX BXM - X 2 1/ X 2 9/ X 2 9/ X 2 9/ X 2 9/ X 2 9/ X 2 9/ The GX-2M hanger and adapter flange arrangement provides the same compression seal on the bottom of the GX-2 hanger, but provides a metal to metal compression seal in the top of the hanger and the bottom of the flange seal prep. Thus allowing high working pressure and corrosive environment completions. Tubing Nominal Part Number Thread GX-2 GX-2M 2 3/8 ODUP /8 ODUP /8 CS HYD /8 PJ-6 HYD /8 DSS-HT /8 ODUP /8 CS HYD /8 PH-6-HYD /8 DSS-HT

16 Bottom hole adapters are offered, allowing a flexible means of entry into the tubing bore. These adapters are furnished in various sizes and working pressure to 15,000 psi. Flange Part Number (inches) WP (PSI) Lift Thread OD (Inches) Blanking Plug Tap 2 1/16 2 9/16 1/2 LP* 1/2 LP* /8 3 1/2 Upset 1/2 LP* /16 1/2 LP* /16 1/2 LP* /8 3 1/2 Upset 1/2 LP* /16 4 1/2 Upset 1/2 LP* / /2 LP* / /2 LP* / /2 Upset 1/2 LP* / /2 Upset 1/2 LP* /16 2 9/16 3 1/ /16 AC** 9/16 AC** 9/16 AC** * Line Pipe ** Autoclave Tubing Run Outlet Part Number (Inches) WP (PSI) (Inches) WP (PSI) Tee Cross 2 1/16 2 1/ /16 2 1/ /16 3 1/ /8 2 1/ /16 2 1/ /16 2 1/ /8 2 1/ / / / / / / / / / / / / /16 3 1/ / / Additional Specifications Available On Request 16

17 API Nom. Nom LP. PSI WP œ 4000 PSI TEST Max. Dimensions Seal Ring Tbg. or CSG. OD. Dia. Thk. No. Bolts Bolt s Bolt Cir. Dia. API No. Ring PD. Approx. Dist. Bet. Made up Flgs. 2 1/ /8 6 1/2 1 5/16 8 5/8 x 4 1/ /4 3/16 2 9/16 2 1/2 2 7/8 7 1/2 1 7/16 8 3/4 x 5 5 7/ /16 3 1/ /2 8 1/4 1 9/16 8 3/4 x 5 1/4 6 5/ /8 3/16 4 1/ /2 10 3/4 1 13/16 8 7/8 x 6 8 1/ /8 3/ / / x 7 1/ /16 3/ /8-8 5/8 16 1/2 2 1/ /8 x / /8 3/ /8œ10 3/ / /4 x 8 3/ /4 3/ /8 12 3/4-13 3/ / /4 x / / / / /2 x 10 1/4 23 3/ /2 3/ / / /8 x 3/4 28 1/ /8 PSI WP œ 6000 PSI TEST API Nom. Nom LP. Max. Dimensions Seal Ring Tbg. or CSG. OD. Dia. Thk. No. Bolts Bolt s Bolt Cir. Dia. API No. Ring PD. Approx. Dist. Bet. Made up Flgs. 2 1/ /8 8 1/2 1 13/16 8 7/8 x 6 6 1/ /4 3/16 2 9/16 2 1/2 2 7/8 9 5/8 1 15/ x 7 1/2 7 1/ /4 3/16 3 1/ /2 9 1/2 1 13/16 8 7/8 x 6 7 1/ /8 3/16 4 1/ /2 1/2 2 1/ /8 x 7 9 1/ /8 3/ / / /8 x / /16 3/ /8-8 5/8 18 1/2 2 13/ /8 x / /8 3/ /8œ10 3/4 21 1/2 3 1/ /8 x 9 1/2 18 1/ /4 3/ /8 12 3/4-13 3/ / /8 x 10 1/ / / /4 3 15/ /8 x 3/4 24 1/ /2 5/ / /4 4 3/ /2 29 1/ /16 PSI WP œ 10,000 PSI TEST API Nom. Nom LP. Max. Dimensions Seal Ring Tbg. or CSG. OD. Dia. Thk. No. Bolts Bolt s Bolt Cir. Dia. API No. Ring PD. Approx. Dist. Bet. Made up Flgs. 2 1/ /8 8 1/2 1 13/16 8 7/8 x 6 6 1/ /4 3/16 2 9/16 2 1/2 2 7/8 9 5/8 1 15/ x 6 1/2 7 1/ /4 3/16 3 1/ /2 10 1/2 2 3/ /18 x 7 1/ /8 3/16 4 1/ /2 12 1/4 2 7/ /4 x 8 9 1/ /8 3/ / /2 3 5/ /8 x 10 3/4 12 1/ /16 1/ /8-8 5/ / /8 x / /8 5/ /8œ10 3/ / /8 x 13 3/ /4 5/ /8 12 3/4-13 3/8 26 1/2 5 7/ x 15 3/4 22 1/ / /4-3/4-13 3/8 26 1/2 4 7/ /8 x 12 1/2 23 1/ ,000 PSI WP œ 15,000 PSI TEST Dimensions Seal Ring API Nom. Max. Tbg. Or Csg. OD. Dia. Thk. No. Bolts Bolt s Bolt. Cir. Dia. API No. OD. A Ring Groove Width W Depth D 1 / / /32 8 3/4 x 5 5 9/16 BX / / /8 1 21/32 8 3/4 x 5 5 3/4 BX /32 2 1/16 2 3/8 7 7/8 1 47/64 8 3/4 x 5 1/4 6 1/4 BX /64 2 9/16 2 7/8 9 1/8 2 1/64 8 7/8 x 6 7 1/4 BX /64 3 1/16 3 1/2 10 5/8 2 19/ x 6 3/4 8 1/2 BX /64 4 1/ /2 12 7/ / /8 x /16 BX /64 4 1/ /8 4 1/ /2 x 1/4 15 7/8 BX / /8-8 5/8 21 3/4 4 7/ /2 x /4 BX /2 8 5/8-9 5/8 25 3/4 5 9/ /4 x /4 BX / /8 10 3/4-3/4 30 1/4 6 5/ /8 x 17 1/4 26 1/2 BX /8 17

18 GRAYLING Universal Tubing Head Adapters are designed to install on top of existing wellhead equipment to convert to use with Submersible Pumps. The GRAYLING SA Adapter can be used with the GRAYLING 2 piece connector system or a pack-off style tubing hanger can be employed. Pack-off style tubing hangers come in a variety of tubing sizes and can accommodate most common cable types. Lower flange ( ) is double drilled for # and # flange bolt circles allowing increased flexibility. Although flange sizes are API this style of adapter is rated to 1500 psig. Note: Specify cable AWG size and configuration (round or flat) when ordering. Rated to 1500 PSIG TYPE FLANGE SIZE SAPA - / UPPER THREAD SIZE 2 3/8 TUBING PART NUMBER 2 7/8 TUBING PART NUMBER 3 1/2 TUBING PART NUMBER 8 5/8 SAPA-73238DD SAPA-73278DD SAPA-73312DD 18

19 Type FA Flanged Universal Tubing Spool Assembly FA spool assemblies are designed for ease of BOP installation. All Universal assemblies are designed to mount on top of existing wellhead equipment to convert for use with electrical submersible pumps. All use the Top Entry Electrical system. The FA model uses the 2 Piece Electrical System. Outlets and secondary seals must be specified. TYPE UPPER FLANGE LOWER FLANGE MODEL NUMBER SIZE RATING SIZE RATING 2 3/8 TBG 2 7/8 TBG 3 1/2 TBG FA FA FA FA FA FA FA 9 FA FA 9 FA FA 9 9 FA FA FA FA 9 9 FA FA FA FA FA FA FA3-312 FA 13 5/8 FA

20 Type SA Universal Tubing Head Assemblies All Universal assemblies are designed to mount on top of existing wellhead equipment to convert for use with electrical submersible pumps. All use the Top Entry Electrical system. The SA model is a low cost œ/ configuration using a two piece electrical connector. TYPE FLANGE MODEL NUMBER SIZE RATING 2 3/8 TBG 2 7/8 TBG 3 1/2 TBG SA Flanged SA SA SA Flanged SA SA SA Studded SA SA Studded SA

21 Type A Universal Tubing Spool /Adapter Assembly All Universal assemblies are designed to mount on top of existing wellhead equipment to convert for use with electrical submersible pumps. All use the Top Entry Electrical system. Type A model uses 3 piece electrical connector system. Specific outlets and secondary prep are options. Flanged or threaded tubing connection on bonnet. Specify when ordering. TYPE UPPER FLANGE LOWER FLANGE MODEL NUMBER SIZE RATING SIZE RATING 2 3/8 TBG 2 7/8 TBG 3 1/2 TBG A A A A A A A 9 A A 9 A A 9 9 A A A A 9 9 A A A A A2-238 A2-278 A2-312 A A3-238 A3-278 A3-312 A 13 5/8 A A A A 13 5/8 A A A /2 TBG A2-412 A3-412 A A Other flange sizes available. Upper flanges come with four lockdown screws. 21

22 Type SAW Universal Casing Water Well Head Assembly All Universal assemblies are designed to mount on top of existing wellhead equipment to convert for use with electrical submersible pumps. All use the Top Entry Electrical system. The SAW model is for high volume water applications. The electrical cable is continuous through the hanger and packing for various cable sizes is available. TYPE FLANGE MODEL NUMBER SIZE RATING 5 1/ /8 SAW SAW SAW-C 13 5/8 13 5/8 13 3/8 CSG SAW SAW SAW SAW SAW SAW SAWC SAWC SAWC

23 550BMS AND 700BMS WIRELINE BLOWOUT PREVENTERS The Grayling heavy duty Blowout Preventer has manually operated stems that engage the internal rams. All models are rated for psi and come with a built in flush type equalizer valve. This allows the operator to equalize well pressure with lubricator pressure to assist in backing off the rams. Testports allow the operator to bleedoff pressure from the lubricator after the rams are closed. TYPE BORE SERVICE RATING CONNECTION 550HXMS 4.90 SWEET 5 1/2 œ 8 SAM-2G 550HXMS-H 4.90 SOUR œ Inconel Stem 5 1/2 œ 8 SAM-2G 700BMS 6.37 SWEET 7 5/8 œ 8 SAM-2G 700BMS-H 6.37 SOURœ Inconel Stem 7 5/8 œ 8 SAM-2G 23

24 Progressive Cavity Pump Top Drive Systems Standard Features: 1. Electric or hydraulic power up to 75 HP œ 1800 RPM PSI working pressure /8 or 2 7/8 pin connection. 5. Heavy duty frame c/w lifting eyes. 6. Belt drive guards with service openings. 7. Stuffing box assembly (patent pending) /4 polish rod. 9. 7/8 or 1 sucker rod connections. 10. Conventional packing.. Easy packing adjustment(no wrench required). 12. Low height for underground applications. Optional Features: 1. Hollow rotor shaft c/w drive nut for polish rod. 2. Adjustable motor mounting. 3. Hydraulic motor adapter coupling. 4. Anti-backlash brake assembly. 5. Stuffing box housing side covers. 6. Low RPM œ 160 available /2 polish rod available. Overview The main drive assembly is designed and built for ease of installation and maintenance, and end user economic operation. Over 500 units have been installed through out Alberta since The rotor bearing assembly uses heavy duty thrust and stabilizer bearings that ensure a long life under adverse conditions. An innovative stuffing box design allows complete replacement of packing and bushings without disturbing the polish rod or removing the rotor bearing assembly from the wellhead. The frame and belt drive guard assemblies are required for electric motor driven Top Drive units. The antiœ backlash brake assembly can also be installed to eliminate back torque from electric motors. The complete unit requires no extra site preparation and is simple to install. Flushby procedures are accomplished quickly with no additional equipment requirements. The Top Drive system is compatible with any of the progressive cavity pump manufacturers bottom units. 24

25 Portal Cranes œ Gantry Truck Assembly 20 to 45 Ton Capacity Six Wheel Corner Weyerhauser, Prince Albert, Saskatchewan with 40 ton capacity. Fabricated in 1997/98. Four Wheel Corner Tolko, Grande Prairie, Alberta with 30 ton capacity. Fabricated in Four Wheel Corner Langboard, Quitman, Georgia, United States with 30 ton capacity. Fabricated in 1996/97. 25