Drill Stem Products

Drill Stem ValvesKELLYGUARD™ DRILL STEM VALVES • CHECKGUARD® VALVES CATALOG DSV 2003 (REPLACES CATALOG PC 9701A) R E D E F I N I N G R E L I A B I L I T Y™ KELLYGUARD™ VALVES TABLE OF CONTENTS Standard Model and NACE Trim Kellyguard Valves Hydril’s Kellyguard is a drill stem valve. Drill stem valves facilitate well control and prevent mud spillage. Hydril produces Kellyguard valves to service both the traditional and top drive drilling applications. For traditional applications, they are attached above and below the kelly to close the bore to upward flow from the well, or downward flow while making a connection. For top drive applications, Hydril specializes in dual crank actuator driven valves. Upper Kellyguard valves are well suited for high flow rates, low to high-pressure sealing, and high tensile loads imposed upon upper kelly cocks. The upper Kellyguard valve has left hand-threaded connections, compatible with the swivel and upper kelly connections. The upper Kellyguard valve is used to close the bore if the drill string becomes stuck with the kelly in the rotary table. Lower Kellyguard valves are rated for the rugged applications of lower kelly cocks, including low and high-pressure sealing, high tensile strength, and high torsional strength. They have right hand threaded connections to mate with the lower kelly end and with drill pipe tool joints. The lower Kellyguard valve is positioned below the kelly to close the drill stem bore to hold a kick while preparing to circulate the kick out. It can also be used as a mud saver. Mud saver is the term applied to a lower Kellyguard valve when it is used to save drilling fluid during a connection. It saves mud costs and improves safety by reducing slippery mud on the rig floor. Drill pipe safety valves are lower Kellyguard valves with connections to mate with the drill pipe tool joint. Ratings are the same as lower Kellyguard valves. The valve assists stabbing operations due to its low operating torque for easy closing of the valve. When required, the open valve is stabbed onto the top tool joint, made-up, and manually closed. It is stored in the open position on the rig floor. Seals The Kellyguard valve is designed for 10,000 or 15,000 psi working pressure. It is tested at the factory to 15,000 or 22,500 psi. Hydril has selected high quality materials and dimensional fits to ensure greatest reliability. Each valve has three elastomeric sealing areas: between each seat and body, between crank and sleeve and between sleeve and body. The seat KELLYGUARD VALVES Standard Model and NACE Trim ................................2 Operational Advantages and ....................................4 Durable Components Kellyguard Valve Features ..........................................5 KELLYGUARD DRILL STEM VALVES Engineering Data........................................................6 Application Data ........................................................7 Parts List ....................................................................8 Detail View of Parts ....................................................9 Assembly Procedure ................................................10 Maintenance and Testing..........................................11 CHECKGUARD VALVES Applications and Operations ....................................12 Offshore Application ................................................13 Checkguard Valve Selection ....................................14 Features....................................................................16 Assembly Parts ........................................................17 Maintenance ............................................................18 Rubber Goods Storage for ......................................19 Checkguard and Kellyguard Valves © 2003 Hydril Company LP All Rights Reserved. 2 pH. section 11. time. In the Hydril NACE Trim. Hydril offers Kellyguard: standard and NACE Trim models. the internal parts only are NACE compatible." This configuration is designed for operating pressures of 10. The NACE Trim Kellyguard valve is intended for normal and corrosive drilling environments and limited exposure to H2S. and 3) use of a drilling fluid in which oil is the continuous phase. Contact your Hydril representative for more information regarding Hydril Kellyguard valves suitable for H2S sour gas service. and temperature.KELLYGUARD™ VALVES Standard Model and NACE Trim Kellyguard Valves seals are O-rings with backup rings on each side. Cutaway View These are cutaway views of the valve in the closed position.000 psi. The sleeve seal is an O-ring with backup rings on each side.000 or 15. which states: "The drilling environment is controlled by maintaining drilling fluid hydrostatic head and fluid density to minimize formation fluid in-flow and by the use of one or more of the following: 1) Maintenance of pH 10 or higher to neutralize H2S in the drilled formation. The standard Kellyguard valve is intended for normal drilling environments and those described in NACE MR0175. The crank seal is a "T" with backup rings on each side. The limiting factors for H2S exposure includes H2S concentration. This configuration uses a standard Kellyguard valve body and NACE compliant internal parts and is rated for 10.000 psi operating pressure. 3 . 2) use of chemical sulfide scavengers. Long Service Life. and set the standard for the industry. Designed for Demands of Modern Applications: Stainless Steel. the downward pressure acting on it reduces the friction between the ball and the seat. Interchangeable Parts. above and below the ball. Hydril's 9001 Certificate attests to its commitment to quality. Easy Maintenance. Stainless steel ball and seats provide metal-to-metal sealing to ensure pressure integrity under a wide range of operating conditions. 4 . This reduction in friction decreases the torque required to rotate the ball. Pressure Balancing Allows Easy Opening. All internal parts are stainless steel for corrosion resistance and long service life.000 or 15. Pressure applied to the top of the ball equalizes well pressure acting on the ball from below. They have few operating parts. The sealing surfaces on the ball and seats are metal-to-metal providing reliable sealing from low to high pressure. For traditional applications. For maximum safety. 10. and thus allow opening of the valve. No lubrication is necessary except during assembly. Hydril manufacturing procedures meet the highest international standards of quality.KELLYGUARD™ VALVES Operational Advantages and Durable Components Result in Low Cost of Ownership Hydril designed and developed the original one piece Kellyguard valve to fit the full range of kelly valve applications. The Kellyguard valve can serve as an upper kelly cock. The Kellyguard valve is easily opened. Kellyguard valves are manufactured with enough length on each end to recut the connection in case of damaged threads or shoulders. Open and close positions are clearly indicated on all models. A stop mechanism ensures full 90 degrees rotation for full opening and closing.000 psi. Minimum torque is needed to open the valve because of the pressure balancing function. Kellyguard valves require little maintenance. Hydril tests all bodies at 1 1/2 times rated working pressure. Operating torque is minimized by balancing pressures. allowing easy repair. Abrasion-Resistant Metal-toMetal Seals are Effective in Low or High Pressure. Minimum torque is needed to open the valve. even while sealing pressure. allowing easy fitting of parts during assembly or repair.000 or 15.000 psi Protection Kellyguard valves have a one piece compact body for easy handling and provide protection from 10. They are precisely manufactured for interchangeability. top drive kelly cock. The box and pin connections are cared for as any tool joint with periodic inspections. lower kelly cock. Because the ball is floating. Proper positioning of the ball provides excellent performance and a long service life. drill pipe safety valve. and mud saver. The coating decreases torque and wear between the bearing surfaces. finish. the stainless steel ball is prepared for inspection. the spring-loaded lower seat creates initial sealing. The primary seal is produced by forcing the ball against the upper seat. The sleeve also has a positive stop mechanism so the crank turns 90 degrees for full opening and closing. Under low pressure. The crank operates inside the sleeve and is coated to reduce friction. and sphericity. Pressure balancing. Quality control measures are exacting. T-shaped seal and backup rings provide a pressure seal and minimize rotational friction. Coupler Operating Crank Crank Dog Sleeve Open Position Closed Position 5 . With a closed valve containing well pressure from below. Each and every ball is inspected for size. Sealing is efficient in high or low pressure. Kellyguard valves feature a replaceable operating crank sleeve. Pressure from above acts on the ball forcing it against the lower seat to provide a reliable seal. The precise shape of the ball is recorded using a Talyrond inspection device. Here. Ball Downward pressure seal for mud saver. This sleeve protects the body from unnecessary wear to extend life and reduce costs. Operation is easy with the hex-operating wrench. This pressure balancing significantly reduces operating torque necessary to open the valve.Kellyguard Valve Features KELLYGUARD™ VALVES Well pressure creates primary seal. pressure applied from above equalizes the force on the ball. even at high pressure. High pressure forces the ball against the upper seat. O-ring seal and backup rings provide a seal between the body and sleeve. 56 19.56 17.06 15.75 33.25 4.56 19.56 19.38 6.25 10.KELLYGUARD™ DRILL STEM VALVES Kellyguard Sizes Engineering Data Valve Size inches 3 3 3 3 3 3 3 3 1/2 3 1/2 3 1/2 3 1/2 3 1/2 3 1/2 3 1/2 3 1/2 3 1/2 4 1/4 4 1/4 4 1/4 4 1/4 4 1/4 4 1/4 4 1/4 5 1/4 5 1/4 5 1/4 5 1/4 5 1/4 5 1/4 5 1/4 5 1/4 5 1/4 5 1/4 5 1/4 ID inches 1 3/4 1 3/4 1 3/4 1 3/4 1 3/4 1 3/4 1 3/4 2 1/4 2 1/4 2 1/4 2 1/4 2 1/4 2 1/4 2 1/4 2 1/4 2 1/4 2 13/16 2 13/16 2 13/16 2 13/16 2 13/16 2 13/16 2 13/16 3 1/16 3 1/16 3 1/16 3 1/16 3 1/16 3 1/16 3 1/16 3 1/16 3 1/16 3 1/16 3 1/16 Weight lbs.51 18.38 7.38 6.06 18.56 15.56 16.000 psi Part Number 3132183-1 3132183-2 3132183-3 3132183-4 3132183-5 3132183-6 10.00 5.75 7.25 4.63 7.38 7.13 6.38 6.81 19.56 19.13 6.38 7.00 8.06 17.25 4.88 7.56 16.38 5.56 19.38 5.00 7.38 80 115 135 120 115 80 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 3132172-1 3132172-2 3132172-3 3132172-4 3132172-5 3132172-6 3132172-9 3132174-1 3132174-2 3132174-3 3132174-4 3132174-5 3132174-6 3132174-11 3132173-1 3132173-2 3132173-3 3132173-4 3132173-5 3132173-6 3132173-14 3132173-11 3132166-1 3132166-2 3132166-3 3132166-4 3132166-5 3132166-6 3133038 3132169-1 3132169-2 3132169-3 3132169-4 3132169-5 3132169-6 3132169-7 3132169-8 3132169-9 3132170-10 3132170-14 3132170-15 3132171-1 3132171-2 3132171-3 3132171-4 3132171-5 3132171-6 3132171-7 3132170-1 3132170-2 3132170-3 3132170-4 3132170-5 3132170-6 3132170-7 3132168-1 3132168-2 3132168-3 3132168-4 3132168-5 3132168-6 3132163-1 3132163-2 3132163-3 3132163-4 3132163-5 3132163-6 130 134 228 215 117 7/8 7/8 7/8 7/8 7/8 7/8 7/8 180 192 188 218 218 7/8 7/8 7/8 7/8 7/8 7/8 140 205 270 7/8 7/8 7/8 7/8 7/8 6 .25 4.63 6.06 19.56 20.06 17.75 7.06 19.000 psi Part Number 3132184-1 3132184-2 3132184-3 3132184-4 3132184-5 3132184-6 3132184-7 NC31 (2 7/8 IF) NC38 (3 1/2 IF) 3 1/2 EUE 8R 2 7/8 EUE 8R WT38 NC38 (3 1/2 IF) XT39 NC38 (3 1/2 IF) 4 1/2 FH NC50 (4 1/2 IF) NC46 (4 IF) 4 1/2 REG LH NC40 (4" FH) NC38 SHORT WT 40 DS50 NC46 (4 IF) NC50 (4 1/2 IF) 5 1/2 IF 6 5/8 REG LH NC50 SHORT NC50 LONG HT55 (400) NC50 RH 5 1/2 FH NC56 5 1/2 IF 6 5/8 REG LH 6 5/8 REG RH 6 5/8 REG RH SHORT 6 5/8 FH 7 5/8 REG RH 5 1/2 FH DSTJ pin X WT50 box XT57 4.63 6.06 20.75 5.75 4.50 16.00 15.56 15.63 7.50 16.38 7.56 15.75 6.06 20.38 6.56 17.50 25.60 16.50 18.06 20.13 5.38 8.75 7.82 17. 53 69 59 59 69 Hex Wrench inches 1/2 1/2 1/2 1/2 1/2 1/2 1/2 Connection OD inches Length inches 16.000 psi NACE Trim Part Number 3132185-1 3132185-2 3132185-3 3132185-4 3132185-5 3132185-6 15.63 7.56 19. Note the reduction in torque requirement.100 9. INTERCHANGEABILITY OF ROTARY SHOULDER CONNECTIONS API CONNECTION INTERNAL FLUSH FULL HOLE EXTRA HOLE WIDE OPEN SLIM HOLE 2 7/8 3 1/2 4 3 1/2 3 1/2 4 1/2 NC26 2 3/8 NC31 2 7/8 NC38 3 1/2 4 4 1/2 4 5 4 1/2 NC40 NC46 4 NC50 4 1/2 Most Hydril Kellyguard end connections can be re-cut. it is of interest when compared to other manufacturer’s valves.700 17. Contact your Hydril representative for more information.900 9. The line identified as (A) depicts torque required to open the valve with 0 pressure above the ball.900 26.900 28.100 17. Hex Wrench Size. The graph represents torque as a function of pressure.900 34.) 3 MAXIMUM MAKE-UP MAKE-UP TORQUE TORQUE (FT.700 47.900 41.000 PSI W.200 39.-LBS)* (FT.700 18.P. Line (B) depicts the balance condition.000 41.000 KELLYGUARD™ DRILL STEM VALVES 4-1/4" – 10. across flats 7 . *Graphs for other size and Kellyguard valves are similar.700 32. The correct make-up torque for a specific Kellyguard/Drill pipe connection will be the make-up torque recommended in API Spec RP 7G for the Drill Pipe/Tool Joint combination or the value listed above.800 54.Kellyguard Application Data MAKE-UP TORQUE FOR KELLYGUARD CONNECTION VALVE SIZE (IN.100 56.-LBS)** 5.900 20.200 28.300 22.000 17. which ever is lower.700 8. KELLYGUARD* VALVE CONNECTION NC 31 (2 7/8 API IF) NC 38 (3 1/2 API IF) 3 1/2 NC 38 (3 1/2 API IF) NC 46 (4 API IF) 4 1/2 FH NC 50 (4 1/2 API IF) 4 1/2 API REG LH 4 1/4 NC 46 (4 API IF) NC 50 (4 1/2 API IF) 6 5/8 API REG LH 5 1/4 NC 50 (4 1/2 API IF) 5 1/2 FH 6 5/8 API REG LH **The Torque values listed are upper limits not to be exceeded.300 17.000 13. i.e. pressure above and below ball are approximately equal. Although this is infrequently done.400 18.000 18.700 26. Qty. Size 1 2 3 4 5 6 7 8 9 10 11 12 1* 1* 1* 1 1 1 1 1 1 1* 1* 1* Part Name Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit Lower Seat Ball Upper Seat Crank Sleeve Lower Split Ring Upper Split Ring Retainer Ring Spiral Retainer Ring Seal Kit Lower Seat Spring Coupler Repair Kit 10M 3132111 1007483 3132085 3131113 3131096 3131059 3131098 3131149 1920003-231 1007482 1004295-5 3131175 3132370 3132113 1004583 3132088 3131111 3131094 3131061 3131100 3131151 1920003-287 1006889 1004295-3 3131173 3132371 3132115 1001893 3132091 3131090 3131136 3131063 3131102 3131153 1920003-362 1004485 1004295-2 3131170 3132372 3132118 3109423 3132094 3131090 3131136 3131065 3131104 3131155 1920003-387 1004486 1004295-4 3131170 3132373 10M NACE 3132155 3132231 3132159 3131118 3131169 3131060 3131099 3131150 1920003-231 1007178 1007685-3 3131176 3132179 3132156 3132232 3132160 3131117 3131095 3131062 3131101 3131152 1920003-287 1007278 1007685-2 3131172 3132180 3132157 3132233 3132161 3131115 3131091 3131064 3131103 3131154 1900149-159 1007678 1007685-1 3131171 3132181 3132158 3132234 3132162 3131115 3131091 3131066 3131105 3131156 1900149-161 1007778 1007685-4 3131171 3132182 15M 3132111 1007483 3132085 3131113 3131096 3131059 3131098 3131149 1920003-231 1007482 1004295-5 3131175 3132370 3132113 1004583 3132088 3131111 3131094 3131061 3131100 3131151 1920003-287 1006889 1004295-3 3131173 3132371 3132115 1001893 3132091 3131090 3131136 3131063 3131102 3131153 1920003-362 1004485 1004295-2 3131170 3132372 3132118 3109423 3132094 3131090 3131136 3131065 3131104 3131155 1920003-387 1004486 1004295-4 3131170 3132373 3 3 1/2 1 2 3 4 5 6 7 8 9 10 11 12 1* 1* 1* 1 1 1 1 1 1 1* 1* 1* * 1 2 3 4 5 6 7 8 9 10 11 12 1* 1* 1* 1 1 1 1 1 1 1* 1* 1* 4 1/4 5 1/4 1 2 3 4 5 6 7 8 9 10 11 12 1* 1* 1* 1 1 1 1 1 1 1* 1* 1* * Included in Repair Kit 8 .KELLYGUARD™ DRILL STEM VALVES Kellyguard Parts List Valve Item No. 10 Upper O-ring with backups Lower split retainer ring Ball 7 Operating Crank 3 Crank Sleeve Lower seat spring Lower seat 6 4 2 Body Lower O-ring with backups 1 Cutaway view of standard Hydril Kellyguard valve in open position.10 11 Body Included in item No.Kellyguard Detail View of Parts Spiral wound retainer ring Upper split retainer ring KELLYGUARD™ DRILL STEM VALVES Retainer ring 9 Upper seat 8 Included in item No.10 Exploded parts view of Hydril Kellyguard Valve 9 . 5 12 Included in item No. 5 1/4 6 1/4 Figure 7-2 (sleeve. 4. 3. coupler and seals) into the bore and remove. Use the assembly tool to pull the upper seat (figure 7-5). Install the lower split retainer ring in the lowest groove. ASSEMBLY TOOL PART NO. seals. 7. Insert the lower seat assembly (seat. 4. 6. Install the spiral-wound retaining ring. 9. Press the crank assembly into the hole from the bore and rotate to closed position. Install the upper split retainer ring and the solid retainer ring. Rotate the ball to the open position.3 1/2 4 1/4 .KELLYGUARD™ DRILL STEM VALVES Kellyguard Assembly Procedure DISASSEMBLY 1. 3. 10 . 6. Install the upper seat using the assembly tool. Remove upper O-ring and backup rings. Release the assembly tool. 1. 2. It is ready for service. Compress the lower seat spring with the assembly tool (figure 7-4) and remove the upper split retainer ring. 5. Rotate the ball to a closed position and insert. 8. 9. Remove the lower seat (figure 7-7). 8. Remove the spiral-wound retaining ring (figure 7-2) and the solid retaining ring (figure 7-3). and spring) into the body and pull into place with the assembly tool. Press the crank assembly VALVE SERIES 3 . Compress the lower seat spring and remove the lower split retainer ring (figure 7-6). crank. 5. 1006175 1005693 3123539 3120299 Figure 7-1 Assembly Tool 7 1/4 Figure 7-3 Figure 7-4 Figure 7-5 Figure 7-6 Figure 7-7 ASSEMBLY Lubricate All Parts Prior to Assembly. 2. 7. Pressure test the valve. Install the upper O-ring and backup rings. Rotate the ball to the closed position and remove. Overflow 11 . If the valve is used with oilbase muds. Drop pressure to zero. drain all fluid from the valve assembly and blow dry. 10. TESTING 1. Torque shall be as shown in Table 1. 2. The seals in the valve should be replaced at a regular interval. Periodic inspection of connections is suggested. Depressurize and drain valve. the system for five (5) seconds and close bleed the valve. Six to nine months is a normal interval for seal changes under most conditions. cycle the valve five (5) times to bleed the air. Mount valve in the vertical position with the ball and bleed valve open and fill valve cavity with soluble oil mixture.Kellyguard Maintenance and Testing MAINTENANCE The Kellyguard valve requires very little maintenance. Table 1 Size 3 3 1/2 4 1/4 5 1/4 Torque (Ft-Lbs) 5-25 10-35 15-40 14-45 KELLYGUARD™ DRILL STEM VALVES 6. The maximum allowable pressure drop is 100 psi. After five (5) minutes at the rated working pressure. Whenever the valve is disassembled. Install thread protectors on ends. all elastomeric seals should be changed (see section 5 for assembly-disassembly instructions). 4. With bleed valve open and system filled. Pressurize the lower valve cavity to the rated working pressure and allow system to stabilize for five (5) minutes after system has stabilized. Fill and drain all internal cavities with hydraulic oil. Once the system is filled. It should be greased during assembly. Pressurize valve cavity to rated working pressure. The type of service the valve is given will affect the length of time between seal changes. 7. Rotate ball to open position. rotate the ball to the closed position. Torque shall be as shown in Table 1. the seals should be changed more often than with water-base muds. Install test plug and test cap in box and pin ends. No leakage is allowed. 3 Measure torque to close and open valve. 9. 5. observe crank seal for fluid leakage. 8. The box and pin connections should be cared for just as any other tool joint. When all tests are successfully completed. For better operation. the spring-loaded ball seals it.CHECKGUARD® VALVES Checkguard Valve Applications and Operations The Checkguard drop-in check valve is used in the drill string. while not in use. The check valve should be disassembled. It serves as a check valve to prevent upward flow through the drill string while permitting downward mud pumping or flow from injectors. install the check valve to protect against the release of well pressure. The check valve provides the driller with a means to control the drill pipe pressures when required. but allows fluid to be pumped downward to circulate the well. Connect the kelly and pump the check valve into the landing sub. The body is driven upward by pressure from below. the pressure from below forces a tighter seal. But when fluid tries to flow from the bottom to the top. Prior to shearing drill pipe.The valve should be stored in a protected area. Checkguard valves use a spring and ball design. Fluid can be pumped through the valve from the top. and lubricated once it is retrieved from the landing sub after downhole use. and dirt on the packer surface. Installing a Checkguard valve improves well control significantly. A suitable O-ring lubricant such as castrol oil may be used. The tapered body engages the packer. While stripping drill pipe into the hole. While tripping. A large rubber packer provides sealing when fluid attempts to flow around the valve. Installation of the check valve simplifies well control. allowing the top connection to be open. 12 . This protects working part. checkguard valves control upward pressure in the drill pipe. These new components are added to increase the abrasion resistance of the valve to mud flow through it. thus increasing its life. away from UV-rays and other harsh elements. Check for foreign substances such as paint. A new ceramic ball has been incorporated. cleaned. Another way is to trip the drill string and remove the check valve from the landing sub with the retrieval tool. grease. Check for cracking and embrittlement of packer. Never oil the rubber packer. Latching the check valve into the landing sub contains the pressure in the drill pipe. Replace packer if condition requires. Use the drill pipe safety Kellyguard valve and lower Kellyguard valve if excessive back flow exists. ensure the rubber packer is clean and pliable. Position the landing sub in the lower end of the drill string. It prevents upward flow through the drill pipe. Use normal wire line procedures. The check valve remains top side until needed and is retrievable by wire line. As the drill string pressure increases. New Abrasion Resistant Materials for the Checkguard The ball seat has been improved with the addition of a Tungsten Carbide coated sealing surface. Checkguard valves contain upward well bore pressure in the drill pipe. INSTALLATION AND RETRIEVAL Install the landing sub in the drill string while tripping into the hole. Install the check valve by dropping it into an open tool joint. since formation pressures cannot communicate up the drill string. Retrieve the check valve by installing a sinker bar above the retrieving tool and using a wire line. The check valve is pumped down to the landing sub prior to shearing the drill pipe. 13 . reestablishment of well control will be simplified as the blind rams and annular BOP can be opened without experiencing flow up through the drill pipe. Later.CHECKGUARD® VALVES Checkguard Valve Offshore Application Offshore applications A must for every shear ram application on floating and surface drilling Drill pipe has been sheared after Checkguard valve has been landed in sub. Shear / blind ram Tool joint hangs on pipe ram Checkguard valve in place The Checkguard valve should be available to close off the drill string bore before shearing the drill pipe in subsea or surface drilling where shear / blind rams are applied. lower kelly valve. Once smallest bore is determined. Retrieving Tool Fitted with a 5/8 API sucker rod connection (15/16-10 UNS) for connection to wireline. and sometimes drill collars. Select a landing sub with threaded connections and outside diameter compatible with the mating tool joints of the drill string. Verify kelly. tool joints. Check Valve Use the largest size check valve that can pass through the drill string to the landing sub to provide the largest flow area for circulation. Determine the smallest inside diameter through which the check valve must pass. 14 .CHECKGUARD® VALVES Checkguard Valve Selection Landing Sub After the correct size check valve is determined. The check valve OD must be at least 1/16 inch smaller than this inside diameter. choose a matching landing sub. read across table for correct valve size. Smallest bore in drill string through which the check valve must pass. #27 NC 31 (2 7/8 IF) NC 38 (3 1/2 IF) WT 38 XT 39 #35 NC 38 (3 1/2 IF) 4 1/2 FH NC 46 (IF) NC 50 (4 1/2 IF) 4 1/2 RRH 4 1/2 RRHBXB 3 1/2 EUE 4 1/2 NVAM WT40 WT40 box x XT39 pin WT40 box x HT38 pin #43 NC 50 (4 1/2 IF) NC 50 (4 1/2 IF) NC 50 (4 1/2 IF) NC 50 (4 1/2 IF) NC 46 (4 IF) NC 46 (4 IF) NC 46 (4 IF) NC 46 (4 IF) 5 1/2 FH NC 50 (4 1/2 IF) #48 NC 50 (4 1/2 IF) 5 1/2 FH 6 5/8 RRH 6 5/8 RRH BXB 6 5/8 FH 6 5/8 RRH NC 50 (4 1/2 IF) 6 5/8 FH 6 5/8 FH WT 56 XT57 WT50 box X HT55 pin XT57 XT57 box X HT55 pin 3126321-01 3126321-02 3126321-03 3126321-04 3126322-01 3126322-02 3126322-03 3126322-04 3126322-05 3126322-06 3126322-07 3126322-09 3126322-15 3126322-16 3126322-17 3126323-01 3126323-02 3126323-03 3126323-04 3126323-05 3126323-06 3126323-07 3126323-08 3126323-10 3126323-19 3126324-01 3126324-02 3126324-03 3126324-04 3126324-05 3126324-06 3126324-08 3126324-11 3126324-12 3126324-14 3126324-16 3126324-19 3126324-20 3126324-21 3 1 11/16 23 3126351 2 11/16 1 3/8 18 3126350 2 3/16 7/8 13 3126349 CHECKGUARD® VALVES CHECK VALVE O. inches 4 1/8 4 3/4 5 1/8 5 4 3/4 6 6 1/4 6 3/8 5 3/4 5 3/4 5 5 5 1/2 5 3/8 5 1/4 6 1/8 6 1/4 6 3/8 6 1/2 6 1/8 6 1/4 6 3/8 6 1/2 7 6 5/8 6 3/8 7 7 3/4 7 3/4 8 8 6 5/8 8 1/4 8 1/2 7 3/4 8 7 1/8 7 3/8 7 BORE inches 1 5/8 LENGTH inches 36 PART NO. 1007225 2 1/8 36 120 3126355-1 3126355-2 3126355-3 3126355-4 3126355-5 3126355-6 3126355-10 3126355-12 3126355-15 3126355-16 3126357-17 14 1007425 2 5/8 36 230 3126356-1 3126356-2 3126356-3 3126356-4 3126356-5 3126356-6 3126356-7 3126356-8 3126356-10 3126356-19 21 1004625 2 15/16 36 220 3126357-1 3126357-2 3126357-3 3126357-4 3126357-5 3126357-6 3126357-8 3126357-11 3126357-12 3126357-14 3126357-16 3126357-19 3126357-20 3126357-21 28 1007725 To Select correct Checkguard valve determine: 1.D. inches 1 11/16 LANDING SUB PART NO. Landing sub connection size and type.Checkguard Valve Selection 15. 105 BORE inches 5/8 WT lbs. 3126348 RETRIEVAL TOOL WT lbs. 3. 2.000 psi NACE TRIM CHECKGUARD ASSEMBLY (VALVE. 5 O. SUB & TOOL) CHK L-SUB END ASSEMBLY NO. CONNECTION PART NO. 3126354-1 3126354-2 3126354-3 3126354-4 WT 8 PART NO.D. 15 . Outside diameter of mating tool joints. Maximized Flow Area Downward flow areas are maximized. Checkguard is not exposed to premature deterioration. Upward pressure is contained by the packer and ball. When control is needed. Installed As Needed The check valve remains on the drill floor until it is needed.CHECKGUARD® VALVES Checkguard Features Checkguard is a drop-in check valve for the drill string. check valve is stored top side. The check valve has landed and latched in the sub and is containing well pressure. 16 . Many downhole valves are part of the drill string and are constantly subject to abrasive wear. Wire Line Retrieved Since the check valve can be wire line retrieved. it is allowing circulation of drilling fluid. Positive Closure Traveling down the drill string. but allows fluid to be pumped downward to circulate the well. 15. The check valve prevents upward flow through the drill pipe. the check valve is pumped down the drill string where it latches automatically in the landing sub.000 psi working pressure. The replaceable landing sleeve has recessed areas into which the check valve packer seals. it eliminates the need to trip the drill string for retrieval. yet it is lightweight and easily handled.000 psi Working Pressure Checkguard seals up to 15. Landing sub in drill string. The ball closes against upward pressure. the check valve lands on the landing sub sleeve and latches positively into place. Check valve has landed in the sub. allowing high flow capacity and long life. The retrieving tool is unlatching and lifting the check valve. The check valve remains top side until needed and is retrievable by wire line. It provides the driller a means to control the drill pipe pressure when required. This wear results in frequent replacement of valves and can prevent valve closure when needed. Only the landing sub is installed as the drill string is run. Yet retrieval can also be accomplished after tripping out the drill string. OUTER RETAINING RING SPRING. 35 1007425 NO. 43 1004625 NO. VALVE BALL RETAINING SCREW SET SCREW REPAIR KIT QTY 1 1 1 1 1 1 1 1 1 1 1 1 2 1 NO. 27 3132109 3127085 3126367 3127090 3127036 3126334 3127092 3127093 3126579-2 3126660 3126515 1900754-2 3125122-2 1900755-0603 3133165 NO.Checkguard Valve Assembly Parts 1D 1E CHECKGUARD® VALVES CHECK VALVE ASSEMBLY ITEM 1A ***1B 1C 1D 1E ***1F ***1G ***1H 1I 1J ***1K ***1L 1M 1N DESCRIPTION CAGE. 48 3 3127095 3131099 3131150 1920003-231 1921173-230 1900004-233 1920069-233 3133149 3133152 3125119 3131101 3131152 1900149-148 1921173-234 1900004-340 1920069-340 3133148 3133151 3126392 3131103 3131154 1900149-159 1921173-240 1900004-346 1920069-346 3133147 3133150 3127117 3131105 3131156 1900149-161 1921173-244 1900004-349 1920069-349 3126357-SK 3126357-RK 2 8 7 9 *Included in Seal Kit **Included in Repair Kit RETRIEVAL TOOL (Not shown in this illustration) ITEM DESCRIPTION RETRIEVAL TOOL QTY 1 NO. 27 1007225 NO. 35 3132108 3126408 3125115 3125116 3125117 3125118 3126560 3126561 3126579-3 3126516 3126517 1900754-3 3125122-3 1900755-0604 3133166 NO. 48 3131853 3127110 3127112 3127113 3127052 3126563 3127114 3127115 3126579-5 3126520 3126521 1900754-5 3125122-3 1900755-0604 3133168 6 5 4 1A 1L 1K 1N 1F 1B 1M 1M 1I 1H 1G 1C 1J ***Included in Repair Kit LANDING SUB ASSEMBLY ITEM 2 **3 4 5 **6 *7 *8 *9 ** DESCRIPTION SUB BODY LANDING SLEEVE SPLIT RING RING RETAINER RING RETAINER-SPIRAL QUAD RING O RING BACKUP RING SEAL KIT REPAIR KIT QTY 1 1 1 1 1 1 1 2 NO. INNER BACKUP RING. 27 NO. 43 NO. 48 1007725 17 . 35 NO. UPPER SPRING. BALL SEAT. BALL BODY NUT SLIP PACKER BACKUP RING. 43 3132107 3126450 3126588 3126586 3126587 3126397 3126590 3126589 3126579-4 3126518 3126519 1900754-4 3125122-3 1900755-0604 3133167 NO. VALVE REPLACEMENT (1N) 1. install new packer (1F) with square shouldered end down (toward ball). 2. Install the retainer ring (5) and the retaining ring (6) into the upper split ring (4). Unscrew and remove ball cage (1A) from ball seat (1B). Install retainer ring (1I) over two retaining screws (1M) so that ring fits into slots on screws. 8. 3. 3. 12. 18 7. Install the landing sleeve (3). Do not lubricate packer. Lubricate surfaces with light grease. Remove outer backup ring (1H). 2. Install two retaining screws (1M) into valve body (1C). CHECKGUARD VALVE STORAGE At the conclusion of each well or prior to placing the valve in storage for even a brief period. 11. 5. 5. Clean and inspect disassembled parts. Remove the retaining ring (6) and the retainer ring (5) from the upper split ring (4). Lubricate surfaces with light grease. 7. Remove the upper split ring (4) from the sub body (2). inspected. LANDING SUB DISASSEMBLY/ ASSEMBLY (2-9) 1. 2. Remove the O-ring (8) and back up rings (9) from the sub body. Ensure that screw is fully seated in groove on ball seat (1B). If in good condition. 6. cleaned. Do not oil or grease packer. and packer (1F). 6. Replacement of worn packer. Replace any parts that are worn or damaged. Install set screw (1N) into ball cage (1A). and reassemble. Slide lower portion of valve from valve body. 5. 5. 4. Install slip spring (1J) and slip (1E). Check metal parts for damage. 6. Remove the landing sleeve (3). Remove ball (1L) and ball spring (1K). 3. inner backup ring (1G). 4. Slide lower portion of valve into valve body by hand. Install the O-ring (8) and back up rings (9) in the ring groove in the sub body. 3. 6. Install inner and outer backup rings (1H and 1G). 6 1D 1E 5 4 1J 3 7 8 1C 9 1M 1M 1I 1H 1G 1F 2 1B 1L 1K 1N 1A Retrieving Tool . Remove set screw (1N) from ball cage (1A). Replace and tighten ball cage onto ball seat. lubricated thoroughly with non-petroleum base oil such as castor oil or silicon oil. 2. it is recommended that the Checkguard valve be disassembled. 9. seal rings and other parts can be made conveniently at this time. Install slip nut (1D). Unscrew and remove slip nut (1D) from valve body (1C). Install the O-ring (7) into the landing sleeve (3) 10. Repair if not smooth before replacing ball and spring. Inspect ball seat to ensure good sealing surface. Remove slip (1E) and slip spring (1J). 4. Install the upper split ring (4) into the sub body (2). Remove the O-ring (7) from the landing sleeve. 4. Clean and inspect disassembled parts that are worn or damaged.CHECKGUARD® VALVES Checkguard Valve Maintenance PACKER REPLACEMENT (1F) 1. Ensure that screws are fully seated in groove on outside of ball seat (1B). SLIP DISASSEMBLY / ASSEMBLY (1E) 1. Remove retainer ring (1I) and two retaining screws (1M) from valve body (1C). dark storage area.) Will a suspect part pass a hardness test? (In the event that the hardness runs 15 points higher than the normal hardness of the part. 3. Impervious surface coverings are recommended. The ultraviolet content of the light spectrum accelerates cracking. light. BOP testers. The process is greatly accelerated when ozone or oxygen is present. Remove oil. Two principal sources of ozone are (1) atmospheric ozone. replace the part. it is considered non-usable. 2. glands." Generally. as well as natural rubber parts. Atmosphere. A large. Prior to using rubber goods that have been stored for periods of time. In extremely cold climates. no precise figure is available for "storage life. and readings should be taken with the rubber part at 70°F. stoves and direct blasts of space heaters. judgment becomes the rule and where there is doubt. Select a cool location (ideally below 90°F) that is away from heaters. and function. Stretching or bending rubber goods will result in accelerated aging or cracking. extreme cold. RUBBER GOODS STORAGE 7. 6. sealed containers are recommended. both natural and synthetic. especially oil field liquid hydrocarbons. No general rule can be drawn regarding usability. 1. which eventually crazes into small cracks and may turn chalky or assume a bark-like appearance. 4. or any high voltage equipment producing corona). Rubber goods. such as a packing unit. and heat accelerate deterioration of rubber goods. The following recommendations will allow vendors and users of oil field equipment to maximize normally available storage facilities for rubber goods. grease or other foreign materials from the storage area to preclude spillage on rubber goods. and away from direct sunlight. switch gear. high voltage corona. or operator parts. do not hang o-rings on pegs. or chemical reactions with solvents and petroleum products. Store rubber goods in a relaxed position in their normal shape. possess some degree of susceptibility to deterioration from various solvents. which cause swelling/shrinkage. a relatively large part (by volume). specific composition.Rubber Goods Storage for Checkguard and Kellyguard Valves The term rubber goods includes synthetic compounds. Periodically inspect to detect aging signs and treat the rubber goods that must be stored in a stretched attitude with age resistant compounds. Points of strain in rubber goods attacked by ozone are characterized by a hard skin. Impervious surface coverings such as waxing will increase shelf life. Rubber goods storage areas should be kept as dry as possible. Keep the rubber storage area as dark as possible – preferably indoors. some rubber goods become so brittle they will shatter when dropped or handled roughly. not outdoors. whereas the light piece would be rendered useless. heavy part might suffer the same total amount of aging as a small. these checks should be made: Is there "chalking" or "barking"? Has the part developed a "hard skin"? Do cracks appear? (Sometimes cracks will be obvious. dry. and (2) ozone created by electrical discharges such as lighting. the more susceptible a part is to being rendered useless by aging. the greater the ratio of surface area to volume. The rubber goods are also affected by stretching or bending from normal shape. windows. The term aging means cumulative effects of all three attacking agents over a period of time. first-out inventory management is essential with rubber goods.) Note: Hardness is affected by temperature. and electrical machinery. For example. Thus. Exposure to the atmosphere allows ozone (O3). and direct artificial lighting. If storage for extended periods is anticipated. A) B) C) D) 19 . Avoid locations susceptible to drafts that will carry the atmosphere from electrical machinery to the rubber goods storage area. skylights. to react with and be especially detrimental to rubber goods. For example. might be expected to have a much longer useful shelf life than a large diameter O-ring. The practice of first-in. 5. Keep rubber goods away from electrical machinery (motors. stretch or bend the part in question so that any incipient cracks or very thin cracks will be revealed. Since the aging of a rubber product is dependent upon all of the above factors plus its size. such as Nitrile Copolymers and Neoprene. a very active form of oxygen. light piece and still be useful. The ideal storage situation for rubber goods would be in vacuum-sealed containers maintained in a cool. Heat causes a gradual hardening of rubber goods. hydril.O.com Headquarters Hydril Company P. TX 77205-0458 3300 N.1-800-999-1601 TOLL FREE IN THE U. please check our website at www.S.com/locations 2M GRAPH 10/03 .hydril.A. TX 77032-3411 Telephone: (281) 449-2000 w Fax: (281) 985-3353 For a Hydril Sales. AND CANADA http://www. Box 60458 w Houston. Service or Manufacturing location nearest you. Sam Houston Parkway East w Houston.