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bowen itco spear manualWe have the people, capabilities, and vision to serve the needs of a challenging and evolving industry. One the world can’t live without. We have the people, capabilities, and vision to serve the needs of a challenging and evolving industry. One the world can’t live without. Shortly after the United States entered World War I, S.R. sold the Coalinga shop. He formed a second company, the S.R. Bowen Company, in 1920 in Huntington Beach. In the early spring of 1934, his son Walter and a friend formed Bowen Company of Texas. This tool set the standard for fishing equipment, and the quick acceptance of the tool assured the company partners that their business would be successful. The company continued to create new products, building a reputation for their well tool design and construction. The tool that set the standard for overshots turned 80 in 2015. You may delete and block cookies from this site, but parts of the site may not function as a result. More information about cookies and your choice can be found in our Privacy Policy. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime. Report this Document Download Now save Save ITCO Type Releasing Spear For Later 67 (3) 67 found this document useful (3 votes) 1K views 20 pages ITCO Type Releasing Spear Uploaded by Razvan Radu Description: Itco spear type bowen for fishing operations selection manual Full description save Save ITCO Type Releasing Spear For Later 67 67 found this document useful, Mark this document as useful 33 33 found this document not useful, Mark this document as not useful Embed Share Print Download Now Jump to Page You are on page 1 of 20 Search inside document Browse Books Site Directory Site Language: English Change Language English Change Language.http://bonsai-tree.ru/userfiles/car-manuals-australia.xml
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National Oilwell Varco, whose policy is oneof continuous improvement, reserves the right to discontinuemodels at any time, or to change designs and specificationswithout notice or without incurring obligation. It is ruggedlybuilt to withstand severe jarring andpulling strains. It engages the fish overa large area without damage to, or dis-tortion of the fish. The simple designeliminates any small parts which couldbecome lost or damaged in the hole. Ifthe fish cannot be pulled, the spear mayeasily be released and disengaged. UseThe Bowen Itco Type releasing Spear isused to internally engage and to retrieveall sizes of tubing, drill pipe and casing.It may be used in conjunction withcutters, spear pack-offs and other tools,where this is desirable. ConstructionThe Bowen Itco Type Releasing Spearconsists of a Mandrel, Grapple, ReleaseRing and Nut. The Mandrel may beordered in ether a Flush Type or aShoulder Type. Mandrel top connectionsare furnished to order. The flexible one-piece Grapple has aninternal helix matching the Mandrel helix.The tang of the Grapple rests against astop on the Mandrel when the Spear is inthe engaged position. The large engag-ing surface of the Grapple permits heavyjarring and pulling strains without distort-ing the fish. The helix of the Mandrel ends at the pointwhere the Release Ring is mounted.The cam of the Release Ring matchesthe cam on the face of the Nut. Thematching cams of the Release Ring andthe Nut are a safety device which resistslocking, freezing or jamming of theSpear, assuring an easy release. The standard plain bull-nose nut isfurnished on the tool when orderedunless an alternate type is specified. Alsoavailable as accessory itemsat extra cost are Mill Type, Sub Type andSide-hill Type nuts. Heavy Duty Itco TypeReleasing SpearsBowen Heavy Duty Itco Type Releas-ing Spears have a relatively longerMandrel and Grapple than the StandardSpear resulting in twice as muchsupported wickered area in engagementwith the fish.http://dioceseofniranam.org/userfiles/car-manuals-download-holden.xml These assemblies arelisted, along with the standard assem-blies, in the specifications found belowin this manual. The Heavy Duty Itco Type Spear isintended for use in situations whereswelling of the fish is a problem. Thisspear, which has a much longer mandreland grapple, distributes the swellingforces over a greater area and thussubstantially reduces these forces. Whilethe tensile strength of the mandrel is thesame as the standard spear, the HeavyDuty Spear is far less prone to damagefrom swelling of the fish and is actuallymuch stronger in this sense. Since the swelling forces being deliveredto the fish vary with grapple size, type oflubrication used, straight pull or jarring,etc.; it is very difficult to provide mean-ingful strength data for each condition.While such calculations are possible,it would mean providing a differentstrength for each casing or tubing size,weight, and material grade for eachspear size. Since it would require manypages of published data, many hours ofcalculations, many assumptions regard-ing coefficient of friction and conditionof casing, we have never attempted toprovide such data. It is installed in the box con-nection at the top of the Mandrel. Type S Oversize Stop RingsThe Type S Oversize Stop Ring isdesigned to be used with the ShoulderMandrel type Bowen Releasing Spearwhen use of a larger stop is desirable.It is installed on the Spear shoulder withset screws. Mill Type NutThe Mill Type Nut is used in place of thestandard bullnose nut to mill away thedistorted end of a fish to insure entranceof the Spear into the fish. It is also effec-tive for drilling out a sand-plugged fish. The published data is the pull loadnecessary to break the mandrel at theroot of the spirals. This publishedstrength has no bearing on the morecommon mode of failure which occurswhen the grapple jumps and causesdamage to the outer spiral diameter ofthe mandrel.https://formations.fondationmironroyer.com/en/node/12270 This type of incident is theresult of the fish swelling and allowingthe grapple to keep moving down themandrel until it finally jumps over thespiral or concentrates the load on a verysmall spiral area and causes damage inthe process. The likelihood of this prob-lem occurring increases as the grapplesize increases on any given spear. Sub Type NutThe Sub Type Nut is used in place ofthe standard bullnose nut to provide theconnection required to utilize othertools below the Spear, such as the SpearPack-Off or Internal Cutters. TheSegment Type Spear Grapple consistsof a Grapple Body, eight grapple seg-ments and 16 Grapple Segment Screws.The helix of the Grapple Body matchesthe helix of the Spear Mandrel makingthe action of the Spear the same as withthe standard Grapple. Spear Pack-Off AssemblyThe Spear Pack-Off Assembly isattached to the Sub Type Nut below theSpear to pack off the fish in order tocirculate through the fish. The SpearPack-Off Assembly consists of an Adap-ter Sub, Packer Thimble, Packer andMandrel. The Adapter Sub of the SpearPackoff will be furnished with a boxconnection to match the pin connectionof the Sub Type Nut on which it is to beused, or as otherwise ordered. TheMandrel of the Spear Pack-Off may beordered plain bullnose or with a pinconnection for attachment of other tools,as specified. Bowen Internal CuttersFor Use in Cut and Pull OperationsBowen Internal Cutters may be run belowthe Bowen Releasing Spear and arespaced as desired, depending uponthe length of the fish and the length ofthe cut to be made. The Spear shouldbe spaced far enough above the cutterso that the Spear is clear of the fishduring cutting operations. After cuttingis completed, the Spear can be loweredto retrieve the cut-off section. BowenInternal Cutters are fully described inInstruction Manual No. 5600. Operation Examine and assure that the BowenReleasing Spear is the correct size forthe pipe to be caught and is properlyassembled.https://www.hotelaristonvaldisole.com/images/c-17-globemaster-iii-manual-pdf.pdf Refer to the SpecificationChart and to the Grapple Range Chartin this manual. Connect the Spear to the fishing string.Set the Spear in released position byscrewing the Grapple down the helixagainst the Release Ring as far as it willgo by hand. In this position the Grappleis caused to contract inward and will notengage the pipe as it is run in. Rotate one full turn to the left,then pull the fish by elevating the fishingstring. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds to upgrade your browser. Related Papers Techfact By Carlos Monroy A Test of Lazear's Theory of Entrepreneurship In the Open Source Software Virtual Community By Francesco Rullani READ PAPER Download pdf. The strengths in the instruction manual are based on the Mandrel tensile strength only and does not consider the entire system together. We are now able to model the entire system including Mandrel, Grapple, and Casing together. Our calculations were developed based on feedback from the field, various scale lab testing up to failure, and FEA models. They assume the worst case scenario based on API tolerance. All strengths assume straight and steady pulling of a fully engaged round fish. Ratings are based on Grapple range only. These values are presented without any safety factor. Please contact NOV Engineering if there are any questions. Or call 1-800-MY-APPLE. We recommend using Google Chrome, Mozilla Firefox, Microsoft Edge, or Safari for the best experience. Photos and other media may not display unless you activate javascript and refresh this page. Additional equipment listings were filtered out that may be similar, click here to view. Unit runs well and we are replacing the wash pipe, packin. More Info For more information please call 325-277-3433. San Angelo, TX More Info New Skid Mounted Power Swivel with a Bowen S-150 Swivel Head, powered by a C-9 CAT engine with Sundstrand Hydraulic system, power reels with 100.http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/162995b242d889---Convertible-manual-stair-climbing-wheelchair.pdf More Info For more information please call 325-277-3433. San Angelo, TX More Info Ready to go More Info Currency Capital. USE The Logan Standard Releasing Spear can engage and retrieve tubing, cas-ing, and drill pipe of all sizes. It may be used with other equipment such as spear pack-off assemblies and internal cutters. CONSTRUCTION The Logan Standard Releasing Spear The Itco-Type releasing spear is specifically designed to engage casing, tubing or any other obstructions. It is build to withstand heavy jarring and pulling strains.The Itco-Type releasing spear internally engages and retrieves drillpipe, casing, tubing, or any other obstruction with IDs up to 20 in. It is built to withstand severe jarring and pulling strains. Heavy-duty versions of the spear can be used with. Designed to assure positive engagement with the fish, the Itco-Type releasing spear internally engages and retrieves drill casing, tubing, or any other obstruction with ID up to 20 in. AV20001 AV20002 AV20003 AV20004 AV20005 AV20006 AV20007 Bowen No.It is built to withstand severe jarring and pulling strains. To improve reliability, the tool is designed without the small parts that typically can be lost or damaged downhole. With more than 25 years of experience, our specialized teams arrive with an array of equipment?including power-assisted jars and heavy-duty pulling tools. It is ruggedly built to withstand severe jarring and pulling strains. It engages the fish over a large area without damage to, or distortion of the fish. Our complete range of solutions for the bottom hole assembly and related equipment includes Drill Bits Drilling Motors Borehole Enlargement Drilling Tools and Products Coring Services Fishing Tools Intervention and Completion Tools Service Equipment Advanced Drilling Solutions We take pride in delivering superior perance and reliability. Our objective is to exceed our customers expectations, improve their economics and be an integral part of their strategies.BAUGHERS.COM/ckfinder/userfiles/files/cardiosport-fusion-10-manual.pdf 2 FISHING TOOLS 3 Intervention, Retri and Recovery Intervention, Retri and Recovery.Page 4 Series 150 Overshots Bowen Series 150 Releasing and Circulating Overshots.Pages 5 - 10 Overshot Accessories Bowen Itcoloy Mill Extensions. Page 11 Bowen Itcoloy Mill Guides. Page 11 Bowen Oversize Guides and Wall Hook Guides. Page 11 Impression Blocks and Extension Subs Bowen Impression Blocks. Page 12 Bowen Extension Subs Page 12 Series 10 Sucker Rod Overshots Bowen Series 10 Sucker Rod Overshots Page 13 Series 20 Overshots Bowen Series 20 Short Catch Sucker Rod Overshots Page 14 Series 70 Overshots Bowen Series 70 Short Catch Releasing Overshots. Page 15 Rotary Die Collars Bowen Rotary Die Collars Page 16 Rotary Taper Taps Bowen Rotary Taper Taps Page 17 Itco-Type Releasing Spears Bowen Itco-Type Releasing Spears. Page 18 Segment-Type Spear Grapples Type F Stop Subs. Page 19 Bowen Segment-Type Spear Grapples. Page 19 Full-Circle Releasing Spears Bowen Full-Circle Releasing Spears. Page 20 Simplex Packer Retrievers Bowen Simplex Packer Retrievers. Page 21 Smooth Bore Packer Retrievers Bowen Smooth Bore Packer Retrievers Page 22 Safety Joints Bowen Coarse Thread Safety Joints. Page 23 Fishing Bumper Subs Bowen Fishing Bumper Subs Page 24 Lubricated Fishing Bumper Subs Bowen Lubricated Fishing Bumper Subs Page 25 Balanced Bumper Subs Bowen Balanced Bumper Subs Page 26 Type Z Oil Jars Bowen Type Z Oil Jars Page 27 Super Fishing Jars Bowen Super Fishing Jars. Page 28 Super II Fishing Jars Bowen Super II Fishing Jars Page 29 Table of Contents Jar Intensifiers Bowen Jar Intensifier Tools. Page 30 Super II Intensifier Tools Bowen Super II Intensifier Tools Page 31 Jar Placement Program Jar Placement Program. Page 32 Surface Bumper Jars Bowen Surface Bumper Jars. Page 33 Junk Baskets Bowen-Itco Junk Baskets Page 34 Bowen Reverse Circulation Junk Baskets. Page 35 Bowen Full-Flow Reverse Circulation Junk Baskets.https://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/162995b2f25d15---convertible-manual-mustang.pdf Page 36 Junk Subs Bowen Junk Subs Page 37 Fishing Magnets Bowen Fishing Magnets Page 38 Itcoloy Milling Tools Bowen Itcoloy Milling Tools. Page 39 Bowen Pilot Mills Page 39 Rotary Shoes Bowen Rotary Shoes Hard-Faced with Itcoloy Page 40 Itcoloy Bowen Itcoloy Page 41 Tinning Rod and Brazing Flux. Page 42 Hydraulic External Cutters Bowen Hydraulic External Cutters. Page 43 Internal Cutters Bowen Internal Cutters Page 44 Bowen Collar Finders. Page 44 Internal Pressure Pipe Cutters Bowen Internal Pressure Pipe Cutters. Page 45 External Cutters Bowen External Tubing and Drill Pipe Cutters. Page 46 Tubing and Casing Patches Bowen Packer-Type Tubing and Casing Patches Page 47 Bowen Lead Seal Tubing and Casing Patches. Page 47 Casing Patches Bowen Lead Seal Cementing Casing Patches Page 48 Bowen Underwater Wellhead Casing Patches Page 48 Bowen High Pressure Casing Patches Page 49 Casing Scrapers Bowen Casing Scrapers Page 50 Downhole Solutions NOV Downhole Offerings. Page 51 4 Intervention, Retri, and Recovery NOV Downhole is the manufacturer of Bowen Fishing Tools, the worlds most respected and reliable fishing tool products in the oil and gas industry for over 85 years. Fishing Tools are utilized in two types of operations. 1. Well Intervention the operation of servicing an under-pering well in order to increase its production 2. Fishing the operation of recovering an object that is stuck, damaged, or lost in the wellbore NOV Downhole provides a vast range of fishing tools that have become industry standards. The comprehensive list of products includes catch tools, fishing stroking tools such as jars, intensifiers, and bumper subs, junk retri tools, milling and cutting tools, as well as repair and remedial tools. We lead the industry in terms of the size and diversity of our fleet and our ability to provide and service tools at a global level. Each fishing tool is engineered to per a specific operation.https://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/162995b3981207---Converter-manual.pdf Since several fishing tools are utilized to make a fishing bottom hole assembly, each tool enhances the perance of the others to provide the most effective solution for all types of well intervention and fishing operations. NOV Downholes Bowen Line of Fishing Tools External catch fishing tools Internal catch fishing tools Junk retri fishing tools Milling and cutting tools Accessory tools Repair and remedial tools NOV Downhole offers a computer-based Fishing Jar Placement Program that determines the optimum jar placement in the fishing string to maximize the energy of the jarring impact and impulse. This successful, field-proven placement program compensates for the effects of hole angle, hole curvature, and frictional drag making it applicable for straight, directional, and horizontal hole analysis. Engineering Services NOV Downhole provides customized solutions to your specific application. When a special tool is required, our experienced engineering staff is available to uate your application and provide a specific and reliable solution. Milling and Cutting Fishing tools used to mill or cut objects downhole for a specific reason. Whether you are milling up a fish that could not be retrieved to surface, cutting casing or tubing in an intervention operation, or pering a washing over procedure, NOV Downhole has the tools for the job. Remedial and Repair Scrapers are used to clean the casings inside wall, rollers restore the the inner diameter of casing and tubing to their normal inside diameter and roundness, and patches a permanent sealed connection between two strings of tubing or casing. Accessory Tools NOV Downhole offers a variety of tools that enhance the fishing operation. Bumper subs provide you that extra movement in the drillstring when finding the top of the fish, fishing jars create the impact and impulse force to free the stuck fish, and our intensifiers are run in conjunction with the fishing jar to increase the jarring impact.http://batterseataxi.com/survey/userfiles/files/cardiosoft-manual.pdf Junk Catch Fishing tools used to remove debris, also known as “junk”, from the wellbore. Magnets and junk baskets are ideal when retrieving a fish that is broken into pieces or has an irregular shape. Internal Catch Fishing tools that engage the fish in its inner diameter. Similar to External Catch Tools, this is achieved by a grapple or by threading directly to the fishs inside surface. External Catch Fishing tools that engage the fish on its outer diameter. These tools help you recover equipment downhole by using a grapple or by threading directly to its outside surface. Fishing Tools FISHING TOOLS Series 150 Overshots 5 Gripping and Releasing Mechanism The Bowl of the Overshot is designed with helically tapered spiral section on its inside diameter. The gripping member Spiral Grapple or Basket Grapple, is fitted into this section. When an upward pull is rted against a fish, an expansion strain is spread evenly over a long section of the bowl and the compression strain is spread evenly over a long section of the fish. No damage or distortion occurs to either the fish or the Overshot. This design permits a far stronger tool with a smaller outside diameter than is possible with an overshot that employs a single tapered section which supports slips. A Spiral Grapple is ed as a left-hand helix with a tapered exterior to con with the helically tapered section in the Bowl. Its interior is wickered for engagement with the fish. A Basket Grapple is an expandable cylinder with a tapered exterior to con to the helically tapered section in the Bowl. Two types of Basket Grapple are available to meet the need for catching various types of fish. The Basket Grapple with Long Catch Stop has an internal shoulder located at the upper end, to stop the fish in the best catch position. It is designed to stop and catch collars and tool joints, with sufficient length left below the Grapple to allow the joint to be packed-off with a Basket Control Packer. The Basket Grapple with Short Catch Stop not shown has a double set of wickers of two different internal diameters. It is used to stop and catch a coupling with a ruptured piece of pipe engaged in its upper end. The upper set of wickers will catch the ruptured pipe and act as a stop against the coupling, while the lower set of wickers will catch the coupling. Grapple Controls are of two types Spiral Grapple Controls are used with Spiral Grapples; Basket Controls are used with Basket Grapples. Grapple Controls are used as a special key to allow the Grapple to move up and down during operation while simultaneously transmitting full torque from the Grapple to the Bowl. Spiral Grapple Controls are always plain; Basket Grapple Controls may be either plain or include a Packoff. In addition to the Packoff, mill teeth are included. See Packoff Mechanism in this catalog for a complete explanation. Bowl Bowl Basket Grapple Inner Seal Outer Seal Guide Mill Control Packer Basket Grapple Basket Grapple with Long Catch Stop Bowen Series 150 Releasing and Circulating Overshot with Basket Grapple Bowen Series 150 Releasing and Circulating Overshots The NOV Downhole Bowen Series 150 Releasing and Circulating Overshot is the strongest tool available to externally engage, pack-off, and pull a fish. The basic simplicity and rugged construction with which it is designed have made it the standard of all external catch fishing tools. Construction The Bowen Series 150 Releasing and Circulating Overshot is composed of three outside parts the Top Sub, Bowl, and Guide. The Basic Overshot may be dressed with either of two sets of internal parts, depending on whether the fish to be caught is near maximum size for the particular overshot. If the fish diameter is near the maximum catch of the Overshot, a Spiral Grapple, Spiral Grapple Control, and Type “A” Packer are used. If the fish diameter is considerably below maximum catch size usually ” a Basket Grapple and a Mill Control Packer are used. Inner Seal Basket Grapple Mill Control Packer Outer Seal Series 150 Overshots 6 In operation, the Overshot functions in the same manner, whether dressed with Spiral Grapple parts or Basket Grapple parts. During the engaging operation, as the Overshot is rotated to the right and lowered, the Grapple will expand when the fish is engaged, allowing the fish to enter the Grapple. Thereafter, with rotation stopped and upward pull rted, the Grapple is contacted by the tapers in the Bowl and its deep wickers grip the fish firmly. During the releasing operation, a sharp downward bump places the larger portion of the Bowl tapers opposite the Grapple, breaking the hold. Thereafter, when the Overshot is rotated to the right and slowly elevated, the wickers will unscrew the Grapple off the fish. The fact that Bowen Releasing and Circulating Overshots require right-hand rotation only, both during engaging and releasing operation, is extremely important. This feature eliminates the dangers that are present when it is necessary to rotate the string in a left-hand direction. Pack-Off Mechanism The type of Pack-off used depends on how the Overshot is dressed and the operators choice. When the Overshot is dressed with a Spiral Grapple, a Type “A” Packer is used. It seals at its O.D. against the inside of the Bowl. It has an internal lip that seals around the fish. Each Type “A” Packer is designed to packoff a specific size. A Type “A” Packer should be ordered for each size Spiral Grapple. Control Packers are used when the Overshot is dressed with a Basket Grapple. Control Packers are standard with a Type “R” Replaceable Packer. The patented Double Lip Packer provides greater sealing ability and reduces the chance of seal damage during fish engagement. The outer seal is also replaceable; this allows for field replacement of either seal. The Mill Control Packer is used when light dressing is required prior to fish engagement. NOTE Only one control can be installed in the overshot assembly at a time. Control Packers are manufactured for a specific size. One should be ordered to match each basket grapple size that has been ordered. Plain Controls are used when no packoff is required. They are installed in the same location as the Control Packer. NOTE The tables on the following pages list all available controls. Refer to those tables for the proper part number. Operation Engaging and Pulling the Fish Connect the Overshot to the fishing string and run it in the hole. As the top of the fish is reached, slowly rotate the fishing string to the right and gradually lower the Overshot over the fish. Allow the right- hand torque to slack out of the fishing string, and pull on the fish by elevating the fishing string. If the fish does not come, start the circulating pumps and maintain a heavy upward strain while fluid is forced through the fish. Releasing From the Fish Drop the weight of the fishing string heavily against the Overshot, then simultaneously rotate to the right and slowly elevate the fishing string until the Overshot is clear of the fish. To release from a recovered fish, follow the same procedure while holding fish below the Overshot. Overshot Accessories The more commonly used accessories for Bowen Series 150 Overshots are Extension Subs, Oversize Guides, Wall Hook Guides, Milling Shoes, and Lock Rings. These accessories are illustrated and listed beginning on page 10. Calculated strength data on all Bowen Series 150 Overshots are available on request. Send for Bowen Technical Manual No. 1150 which includes complete descriptions of construction, operation, maintenance, and parts listing for Bowen Series 150 Releasing and Circulating Overshots. Top Sub Type A Packer Spiral Grapple Guide Bowl Grapple Control Bowen Series 150 Releasing and Circulating Overshot with Spiral Grapple Packer Spiral Grapple Spiral Grapple Control FISHING TOOLS 7 Tools are listed in order of maximum catch size. The following table shows only a partial listing of available NOV Dowhole Bowen overshots. NOTE Nitralloy Grapples are available upon request. Download Smith Service - Data Handbook.Preface The 3rd edition of the Smith Services Dimensional Data Handbook contains practical information, useful when planning specialized operations for drilling, ?shing and remedial work. The content of this handbook focuses on the dimensional speci?cations of products provided by the industry's tubular suppliers as well as coiled tubing and ?shing tool manufacturers. This data will assist you in ?shing, remedial milling, pipe cutting, pipe recovery, thru-tubing and coiled tubing operations. Smith Services provides specialized drilling and remedial services in all major oil and gas ?elds worldwide. Our experienced personnel utilize the data contained in this handbook daily. We hope that the 3rd edition of the Dimensional Data Handbook will assist you in achieving your particular objectives. All rights reserved. I Disclaimer: While every precaution has been taken in the preparation of this handbook, the publisher assumes no responsibility for errors or omission. Information in the documentation is also subject to change without notice. Neither is any liability assumed for damages whatsoever arising out of the use of the information contained herein. Permissible Variation, Max. Permissible Variation, Max.Collapse pressures are based on uniform wear. Internal pressures are based on uniform wear and nominal OD. Numbered connections (NC) may be machined only with V-0.038 radius thread form. All rights reserved. 1-12 Interchangeability Chart for Tool Joints (continued) Common Name Style Units Size Pin Base Dia. Recommended Make-Up Torque (ft-lbs) 1-14 Recommended Min. Joint (ft-lb) (in.) der ODTool (in.) With Joint Ec(ft-lb) centric Wear (in.) Min. Box Shoulder With Eccentric Wear (in.) MakeupTorque for Min. All rights reserved. 1-15 Recommended Min. All rights reserved. 1-16 Recommended Min. Based on Torsional Strength of Box and Drill Pipe (continued) Drill Pipe Data New Tool Joint Data Premium Class Class 2 Pipe Nom. Box MakeShoul- upTorque der With for Min. EcODTool centric Joint Wear (ft-lb) (in.) 19.50 G105 NC50 See end of table for notes. All rights reserved. 1-17 Recommended Min. Tool joint with dimensions shown has lower torsional yield ratio than the 0.80 which is generally used. Recommended makeup torque is based on 72,000 psi stress. In calculation of torsional strengths of tool joints, both new and worn, the bevels of the tool joint shoulders are disregarded. This thickness measurement should be made in the plane of the face from the ID of the counterbore to the outside diameter of the box, disregarding the bevels. Tool joint diameters speci?ed are required to retain torsional strength in the tool joint comparable to the torsional strength of the attached drill pipe. These should be adequate for all service. Tool joints with torsional strengths considerably below that of the drill pipe may be adequate for much drilling service.P or B indicates that tool joint could not meet 80 of tube torsion yield.P or B indicates that tool joint could not meet 80 of tube torsion yield.P or B indicates that tool joint could not meet 80 of tube torsion yield.All rights reserved. 3 2-4 Weight of 31 ft. All rights reserved. 2-7 Recommended Min. Also using the modi?ed screw jack formula as shown in the IADC Drilling manual and the API Recommended Practice RP 7G.Largest diameter shown for each connection is the max.If the connections are used on drill collars larger than the max.