INTELLISERV HANDBOOK. Handling and Best Practices

INTELLISERV HANDBOOK Handling and Best Practices

IntelliServ Handling and Best Practices Handbook May 2013 D392005027-MKT-001 Rev. 02

Disclaimer National Oilwell Varco, Inc. and its associated and affiliated companies makes no representations or warranties with respect to the contents or use of this manual and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, National Oilwell Varco, Inc., reserves the right to revise this publication and to make changes to its content, at any time, without obligation to notify any person or entity of such revisions or changes. Further, National Oilwell Varco, Inc. and its associated and affiliated companies makes no representation or warranties with respect to any IntelliServ software, and specifically disclaims any express or implied warranties of merchantability or fitness for any particular purpose. Further, National Oilwell Varco, Inc. and its associated and affiliated companies reserves the right to make changes to any and all parts of IntelliServ software, at any time, without any obligation to notify any person or entity of such changes. Trademarks INTELLISERV, INTELLISERV BROADBAND NETWORK, INTELLILINK, INTELLICOIL, and the INTELLISERV symbol are trademarks of Intelliserv, LLC. Copyright 2013 National Oilwell Varco. All rights reserved. No part of this publication may be reproduced, photocopied, stored on a retrieval system, or transmitted without the express written consent of the publisher. Quality Statement NOV IntelliServ provides products composed of modified off-theshelf drilling components, proprietary components and progressive software to create a comprehensive telemetry system. All NOV IntelliServ functions and services are in compliance with ISO 9001:2008 and applicable industry standards. NOV IntelliServ governs these functions and requirements through the establishment of a certified Quality Management System. The Quality Management System also fulfills requirements established by both the API Q1 / ISO 29001 Quality System and Explosive Atmosphere requirements of ATEX / IECEx as unified in ISO / IEC 80079. Any processes outsourced by NOV IntelliServ which affect product conformity to requirements are controlled by NOV IntelliServ and are defined within the Quality Management System.

TABLE OF CONTENTS I. BASIC OVERVIEW OF WIRED COMPONENTS... 1 Equipment Overview... 3 IntelliServ Standard Connections... 3 IntelliCoil... 3 DataCable... 4 Wired Drill Pipe... 4 DataLink... 5 DataSwivel... 6 Wired BHA... 6 Top Drive Systems... 6 Surface Equipment and Cabling... 7 Other Components... 7 Commercial Product Specification... 7 Network Diagram... 8 II. OPERATION AND HANDLING... 11 Considerations with Wired Tubular Components... 13 Equipment Handling... 14 Pipe Movement... 14 Proper Doping... 14 Stabbing Guides... 15 Thread Protectors... 16 No-Break Areas on DataLinks... 16 Tong Placement... 17 Recommended Make-Up Torque... 17 Through-Drillstring Service Accessibility... 18 Drifting... 18 Use with Wireline Tools... 20 Fluid Flow Considerations... 20 Drillstring Dynamics... 20 Missed Stab Events... 21 Racking Back... 21 Thread Compound... 21 Drilling Fluids... 22 Fluid Compatibility... 22 Cementing... 22 Acids... 22 High Water-Phase Chloride Muds... 22 Air Drilling... 23 Nitrogen Injected Fluids... 23 Proppant-Laden Completions Fluids... 23 Fluids with Radioactive Tracers... 23 III. INSPECTIONS... 25 Inspections... 27 IV. CLEANING AND STORAGE... 29 Cleaning... 31 Storage Requirements... 31 V. REPAIR... 33 Recut and Reface... 35 Reapplication of Hardbanding... 36 Reapplication of Internal Protective Coating (IPC)... 36 iii

TABLE OF FIGURES Figure 1: IntelliCoil Connection to Armored DataCable... 3 Figure 2: IntelliCoil Communication Device... 3 Figure 3: DataCable... 4 Figure 4: DataCable in Wired Drill Pipe... 4 Figure 5: Primary and Secondary Shoulder Connection... 5 Figure 6: IntelliCoil communication device placement in connection... 5 Figure 7: Passive DataSwivel... 6 Figure 8: Wired BHA... 6 Figure 9: Surface Cabling... 7 Figure 10: The IntelliServ Network... 8 Figure 11: Typical Placement of the DataCable inside a Drill Pipe... 13 Figure 12: Proper Pipe Doping... 14 Figure 13: Proper Pipe Doping... 15 Figure 14: Use of Stabbing Guide... 15 Figure 15: Standard and Quick-turn Thread Protectors... 16 Figure 16: No-Break Area... 16 Figure 17: Tongs... 17 Figure 18: Recommended Tong Placement Areas... 17 Figure 19: DataCable Routing for Drill Collars... 19 Figure 20: Influence of Bending on the DataCable Position... 20 TABLE OF TABLES Table 1: Recommended Make-Up Torque (RMUT) Values... 17 Table 2: Drift... 18 iv

SECTION I BASIC OVERVIEW OF WIRED COMPONENTS 1

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Equipment Overview IntelliServ Standard Connections XT NOV Grant Prideco extreme Torque connection. Available connection sizes include XT 38 (4 drill pipe and 4¾ drill collars) and XT57 (5d drill pipe) GPDS NOV Grant Prideco Double Shoulder connection. Available connections sizes include GPDS50 (5 drill pipe and 6½ drill collars) and GPDS65 (6s drill pipe) GPDC NOV Grant Prideco drill collar double-shouldered connection. Available connection sizes include 8-inch GPDC58, and 9½-inch GPDC69. IntelliCoil A core component of the IntelliServ Network is the IntelliCoil passive inductive communication device, which is used to connect discrete components through standard API and proprietary NOV Grant Prideco connections. This ringshaped transducer carries bidirectional data transmissions from the surface to other drillstring components without the need for a direct electrical connection. Further, the non-contact feature of the IntelliCoil communication device allows it to be embedded in machined recesses on the secondary shoulders of both box- and pin-end connections and protected within the drillstring components. The connection s primary shoulder remains the sealing surface and, in most wired components, the secondary shoulder houses the IntelliCoil communication device. The IntelliCoil communication device is ideal for communication across threaded joints because its radial orientation is irrelevant for effective communication. Figure 1: IntelliCoil Connection to Armored DataCable Dagger Area Figure 2: IntelliCoil Communication Device 3

DataCable Inside each NOV IntelliServ drilling tubular is an armored DataCable. The DataCable runs between the pin and box ends of the tubular and provides the highway through which data travels. The armored DataCable is sheathed and subsequently protected inside the wired tubular, and is engineered specifically to carry high-speed data with low transmission loss. The connections between the IntelliCoil communication device and the DataCable are made using a proprietary high-pressure connector that is engineered for severe drilling environments. Figure 3: DataCable Wired Drill Pipe NOV Grant Prideco s standard double-shouldered drill pipe and heavyweight drill pipe are converted for use in the IntelliServ Network. IntelliCoil communication devices have been engineered into the secondary shoulders of the box and pin ends, with the DataCable running in tension along the inside of the pipe body. Figure 4: DataCable in Wired Drill Pipe 4

Figure 5: Primary and Secondary Shoulder Connection Figure 6: IntelliCoil communication device placement in connection. This figure shows how the inductive coils come together once the pipe is connected and achieve communication from pipe to pipe. DataLink IntelliServ DataLinks are required to boost the signal and to pass the data up and down the drillstring. The DataLinks are housed in subs connected to shortened drill pipe. The sub is slightly longer than a tool joint ( 1.5 m) and the pipe and sub together are the length of a standard-sized joint of pipe ( 9.6 m). DataLink subs are not serviceable in the field, must never be broken apart on the rig, and are marked to indicate that the connection between the DataLink sub and pipe should not be broken. 5

DataSwivel The wired swivel is a modified sub with a stator that connects the IntelliServ Network to the surface cabling. The DataSwivel is typically installed above the uppermost networked IBOP or Kelly. Figure 7: Passive DataSwivel Wired BHA NOV Grant Prideco drill collars and heavyweight drillpipe are converted for use within the IntelliServ Network. These components correspond to other NOV Grant Prideco commercial drill pipe inventory with double-shouldered connections. Jars and other Bottom Hole Assembly (BHA) components are also converted for use. Any wired component used in the drill collar section must be fitted with a double-shouldered connection that is identical to those used for the drill collar connections. Tools Bit Figure 8: Wired BHA Tool Interface Interface Sub Top Drive Systems NOV IntelliServ personnel evaluate the top drive and associated pipe-handling equipment to identify the correct IntelliServ DataSwivel Installation Kit. Surface Equipment and Cabling NOV IntelliServ personnel install surface cabling throughout the derrick structure that enables data transmission from the DataSwivel to NetCon, the network control system. 6

DOWN DOWN IntelliServ - Handling and Best Practices Handbook Crown Block Wiring Diagram NIC Twinax 100-200 (Primary Run) Twinax 250 A-Leg Top Drive Junction Swivel Link Interface (SLI) Box Swivel Link Interface (SLI) Box Twinax 3 Swivel Cable Junction DataSwivel Junction Standpipe / Gooseneck Junction Swivel Cable DataSwivel Kelly Hose with Kelly Conduit Rig Floor Well Stem A-Leg LEMO Connectors Shack Primary run across A-Frame and through Kelly conduit to junction Figure 9: Surface Cabling Other Components During the project planning phase for a well, NOV IntelliServ helps customers identify various linkage and well-control assemblies such as crossovers, saver subs, gray valves, and TIW valves needed to meet drillstring and operational specifications. Upon request, NOV IntelliServ can also convert other tools needed to complete the drillstring and to meet contingency specifications. Commercial Product Specification All of NOV IntelliServ supplied wired drilling tubulars and accessories are supported by detailed engineering and quality data packages. Please refer to the IntelliServ Product Catalog or data sheets for additional information. 7

Network Diagram Figure 10 below shows the IntelliServ Network and depicts the relationship between wired components. DataSwivel* Surface Cabling* Top Drive Rig Wired Drillpipe* DataLink* Interface Sub IntelliServ Link Board* Serial Cable (RS232) Along-String Measurement Device (customer-provided) Tool Interface Electronics * IntelliServ Products Figure 10: The IntelliServ Network 8

WITS Provider Satellite or Rig Network NetCon* Serial Cable (RS232) or Ethernet Vendor PC Virtual Serial (RS232) Connection Bottom Hole Assembly Tools Bit Tool Interface Interface Sub 9

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SECTION II OPERATION AND HANDLING 11

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Considerations with Wired Tubular Components Wired drillstring components used in the IntelliServ Broadband Network contain an armored DataCable located inside the tubular. As shown in Figure 11, the DataCable is embedded within the wall of the tool joints at the ends of the pipe, but the majority of the cable runs along the inside of the thinner-walled pipe section close to the pipe wall. This method of construction causes the cable to be exposed to fluids or tools that may run through the inside of the pipe. The cable is not attached directly to the inner wall of the pipe, but is held in place by tensioning it between anchor points within the tool joints. The degree of tensioning was selected to ensure that the cable remains taut under typical drilling conditions. Figure 11: Typical Placement of the DataCable inside a Drill Pipe 13

Equipment Handling When lifting or moving wired drillstring components, use only properly sized and fitted lifting caps, lifting eyes, or straps. Further, to prevent damage to connection threads and IntelliCoils, thread protectors are required. IMPORTANT Do not place objects inside the components for mechanical leverage. Pipe Movement The preferred, approved methods for moving NOV IntelliServ drillstring components are: A forklift or crane to move drillstring components. A pipe roller or a rope when rolling pipe on the catwalk or test racks. IMPORTANT Never insert a foreign object (pry bar, piece of wood, smaller pipe, etc.) inside the pin or box ends to assist in moving pipe. This could damage the IntelliCoil communication device or the DataCable and result in data loss. Proper Doping Apply a thin, even coat of thread compound to the threads, the secondary shoulder, and the primary shoulder on the box and pin ends of tubular components. Figure 12: Proper Pipe Doping 14

Figure 13: Proper Pipe Doping Stabbing Guides Use NOV IntelliServ approved stabbing guide, or other stabbing alignment method when making up connections to avoid damage to the IntelliCoil located on the pin-face. Contact NOV IntelliServ for more information on approved stabbing alignment methods. Figure 14: Use of Stabbing Guide 15

IntelliServ - Handling and Best Practices Handbook Thread Protectors Thread protectors are critical when moving and storing pipe. Pipe placed directly on its end without protectors can damage the IntelliCoil communication device. Engineered surfaces such as racking mats that do not contain embedded grit may be used in place of thread protectors when racking drillpipe in the derrick, but such surfaces must be approved by NOV IntelliServ. Figure 15: Standard and Quick-turn Thread Protectors No-Break Areas on DataLinks DataLink assemblies have a mid-body connection between the DataLink sub and the shortened pipe. The no-break area is marked by a large X (see Figure 16) and must never be broken apart on the rig. Because DataLink subs are not serviceable in the field, if a DataLink is opened at this connection, the DataLink must be replaced and returned to one of NOV IntelliServ service centers for repair. Figure 16: No-Break Area 16

Tong Placement Tongs are used to make-up pipe to the recommended torque to ensure that the pipe is tight enough to drill and rotate without spinning off or failing because of improper sealing. Figure 17: Tongs in use IMPORTANT When working with hardbanded pipes, always place tongs at least 2 inches below the primary shoulder on the box end and never on the hardbanding. No Tong Areas 2 Pin End Box End Hardbanding Figure 18: Recommended Tong Placement Areas Recommended Make-Up Torque Over-tightening wired drillstring components can damage the drill pipe connection and the IntelliCoil communication device and result in data loss. For a list of Recommended Make-Up Torque (RMUT) values, see Table 1. NOTE These values may be different for drill collars or HWDP, which have different ID/OD dimensions. Table 1: Recommended Make-Up Torque (RMUT) Values RMUT XT 38 17,054 DS50 43,300 XT 57 56,600 17

Through-Drillstring Service Accessibility As determined through real-world application and closed testing, NOV IntelliServ wired components have no adverse effect on through-drillstring operations such as cementing, wiper darts, wireline operations, or manual and passive drifting. Before deployment, NOV IntelliServ provides fishing diagrams and specification sheets detailing the outer (OD) and inner diameters (ID) of all drillstring components. This information allows contingency plans to be deployed efficiently should the drillstring become stuck or lost. Drifting Components are drifted during mechanical inspection before deployment. A plan for drifting the string before pickup and while coming out of hole should include the following specifications: Drifts must be able to pass through the drillstring without damaging the internal components of NOV IntelliServ wired inventory. Table 2: Drift (all units are in inches) Tubular Size and Type Connection Size(s) Typical Tool Jt ID Typical Pipe ID Electronic Housing ID Drift Size Recommended 4" DP XT38 2.438 3.340 2.313 4" HWDP XT38 2.44 2.44 2.111 4" Link XT38/MB40 2.438 3.340 1.750 1.625 4" HWDP DataLink XT38/MB40 2.438 2.438 1.750 1.625 4-7/8" DC XT38 2.438 2.438 2.111 5" DP GPDS50 3.250 4.276 3.125 5" HWDP GPDS50 3.000 3.000 2.673 5" Link GPDS50/MB54 3.250 4.276 3.250 3.125 5" HWDP DataLink GPDS50/MB54 3.000 3.000 3.250 2.673 5-7/8" DP XT57 4.250 5.153 4.125 5-7/8" HWDP XT57 4.000 4.000 3.673 5-7/8" Link XT57/MB58 4.250 5.153 3.500 3.375 5-7/8" HWDP DataLink XT57/MB58 4.000 4.000 3.500 3.375 6-1/2" DC GPDS50 3.000 3.000 2.673 6-5/8" DC DataLink GPDS50/MB54 3.000 3.000 3.250 2.673 6-5/8" DP GPDS65 4.250 5.901 4.125 6-5/8" HWDP GPDS65 4.250 4.250 3.923 6-5/8" DataLink GPDS65/XT69 4.250 5.901 4.125 4.000 8" DC DC58 3.000 3.000 2.673 9-1/2" DC DC69 3.500 3.500 3.173 18

Metal drifts may not be used unless they are coated with rubber or plastic coated and have a rounded profile. Contact NOV IntelliServ when considering use of such items. Nylon drifts may be used to drift the string manually or passively before adding components or stands. In tubular designs like that shown in Figure 11, the armored DataCable is positioned so it does not reduce the minimum inside diameter of the connection. Typically, this means that a piece of wired pipe may be drifted to the same diameter as a non-wired pipe; however, there are exceptions to this statement. When drill collars are drifted, the drift size must be reduced to account for the thickness of the DataCable running along the internal diameter of the drill collar. This is because drill collars maintain a constant internal diameter along their entire length, like pipe shown in Figure 19; therefore, the cable in a wired drill collar rests against the internal bore of the pipe and reduce its actual drift. Figure 19: DataCable Routing for Drill Collars Figure 19 shows the path of armored DataCable in a drill collar. As shown in the figure, the cable is embedded inside the wall of the drill collar at either end of the collar for a short distance, before exiting through a milled transition into the internal bore. Since the diameter of the armored data cable is approximately 0.2 inches, the drift diameter of a wired collar will be approximately 0.2 inches smaller than the drift diameter of a non-wired collar. Likewise, when drifting DataLinks or measurement links, a smaller drift must be used in order to pass through the electronics housed inside. 19

Use with Wireline Tools Since most wired pipe drifts to the same diameter as nonwired pipe, the armored DataCable does not typically interfere with wireline tools as they pass through tool joints in a wired drill string. However, when the drillpipe is bent substantially as it is in deviated wells, further consideration must be given to the wired pipe. Since the DataCable is not affixed to the internal wall of the pipe, the cable may move away from the wall of the bent pipe, as shown in Figure 20. Note that wireline tools were tested in NOV IntelliServ drillstrings with dogleg severities up to 9.56 /100 ft without difficulty. Higher dogleg inclinations are also acceptable if you can control the rate of descent of the wireline tools 150-200 fpm is a safe, recommended rate, but much faster rates have been used without incident. Figure 20: Influence of Bending on the DataCable Position Fluid Flow Considerations The DataCable inside the flow path exhibits a minimal influence on the overall flow dynamics of the drillstring. For example, the cross-sectional area of the cable is less than one-half percent of the available flow area inside a 4-inch drillpipe and does not impact the volumetric properties of the pipe. Drillstring Dynamics The mass of a Range 2 DataCable is less than 3 lbm, which makes a negligible contribution to the overall dynamic system, given more dominating factors such as the variation in pipe wall thickness, bore eccentricity and the relative mass of the pipe. As a result, the DataCable has minimal impact on the dynamic behavior of the drillstring. 20

Missed Stab Events Wired components involved in a missed stab event should be inspected immediately. Should a missed stab result in damage, the component(s) in question should be replaced to prevent additional damage to other wired tubulars. Racking Back Quick-turn, pin-end thread protectors must be used when stands are racked in the derrick. These caps have minimal threads to permit quick connection. Alternatively, engineered surfaces such as racking mats that do not contain embedded grit may be used in place of thread protectors if approved for use by NOV IntelliServ. To prevent damage to pin-end IntelliCoil communication devices, racking mats must be maintained free of debris and stands must be set down carefully and not be rotated or dragged across the racking mat at any time. Thread Compound The recommended practice for connecting wired drill pipe is to apply an even coating of thread compound to the primary shoulder, secondary shoulder, and threads of both box- and pin-end tool joint connections during make-up. IntelliCoil communication devices located in primary shoulders, instead of the standard secondary shoulder location (e.g., the wired IBOP product line), require extra care when applying thread compound. Consult NOV IntelliServ before attempting to dress such a connection. NOV IntelliServ, in conjunction with NOV Grant Prideco, has approved the following thread compounds: JET-LUBE KOPR-KOTE * JET-LUBE NCS-30 ECF * JET-LUBE EXTREME * At no time should thread compounds of any type, regardless of material properties, coefficient of friction, or origin of manufacture be mixed on a connection or within a drillstring. To prevent the contamination of thread compounds, recommended best practices from API, NOV Grant Prideco, and NOV IntelliServ shall be followed at all times. NOTE Thread-locking compounds are not qualified for use on any NOV IntelliServ components. * JET-LUBE, KOPR-KOTE, NCS-30, ECF, and EXTREME are trademarks of Jet-Lube, Inc. 21

Drilling Fluids Fluid Compatibility NOV IntelliServ products are compatible with typical drilling fluids, but components should always be cleaned and stored properly immediately after use. If components are not cleaned properly, chlorides and corrosive fluids can react with the metal surface then fall out as metal chlorides and adversely affect the wired component and the DataCable. Drilling, drillin, or completion fluids containing alkali-metal formates require alternate seal materials in IntelliServ products. Please consult NOV IntelliServ when considering the use of this type of fluid. Cementing NOV IntelliServ products are approved for use with standard cementing operations and should use approved practices to clean the inside of the pipes (e.g., wiper balls and darts). Care should be exercised to ensure that the sizes of wiper balls and darts are appropriate for the diameter of the drill pipe and DataLinks in the drillstring. Components used in cementing operations should be cleaned thoroughly after use. Acids If you plan to pump acid or other highly corrosive fluids through the drill string, consult NOV IntelliServ for guidelines. High Water-Phase Chloride Muds When drilling with oil-based mud, use good quality mud with competent emulsion and good electrical stability. After use, clean and store wired components properly to prevent corrosion damage to the the DataCable. Please consult NOV IntelliServ to discuss water-phase chloride content in context with other drilling conditions. Wired components using special corrosion (SCC) resistant alloys are available for high chloride conditions. 22

Air Drilling If you plan to use wired components in air drilling, please consult NOV IntelliServ for guidelines. Nitrogen Injected Fluids If you plan to use wired components with nitrogen-injected fluids, please consult NOV IntelliServ for guidelines. Proppant-Laden Completions Fluids If you plan to use wired components with proppant-laden completion fluids, please consult NOV IntelliServ for guidelines. Fluids with Radioactive Tracers If you plan to use wired components with radioactive tracers, please consult NOV IntelliServ for guidelines. 23

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SECTION III INSPECTIONS 25

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Inspections IntelliServ - Handling and Best Practices Handbook NOV IntelliServ drillstrings are composed of standard double-shouldered tubulars that have been modified to include IntelliServ components such as the IntelliCoil communication device and armored DataCable. Although modifications to include these components in the tubulars can generate unique questions from industry inspection professionals, these tubulars conform to product requirements for tube body and threaded connections and pass industrystandard inspections. Third-party evaluations confirm that the coil groove and gundrill hole do not adversely impact the mechanical properties of the tubular or connection. Inspections of wired tubulars include mechanical and electrical evaluations. Mechanical acceptance criteria are consistent with industry standards, but electrical acceptance criteria (signal characteristics) are defined by NOV IntelliServ. Contact NOV IntelliServ to arrange inspection training or to obtain a list of approved service providers. Visual inspections of IntelliCoil communication devices and DataCables are recommended as part of normal inspection and preventive maintenance procedures. Extreme corrosion or damage to IntelliCoil communication devices or DataCables can indicate excessive wear and could require that the components be replaced as a preventive measure. Drillstring components should undergo routine inspection and qualification using approved methods and equipment. Contact NOV IntelliServ to arrange training, to purchase equipment needed to conduct these evaluations, or to obtain a list of a list of approved suppliers. 27

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SECTION IV CLEANING AND STORAGE 29

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Cleaning IntelliServ - Handling and Best Practices Handbook Components should be cleaned and stored properly after use to maintain the integrity of the drillstring. Recommended cleaning includes washing mud, cement and debris from the ID and OD of the components as early as feasible. Wired components may be pressure washed; however, when cleaning connections, take special care not to dislodge or damage aspects of the IntellCoil communication devices with pressurized water. To obtain coil protectors you can use to protect the IntelliCoils from inadvertent high-pressure washing, contact NOV IntelliServ. IMPORTANT Do not use rattler systems to clean wired components. For detailed instructions on cleaning the inside of drillstring components, contact NOV IntelliServ. Storage Requirements In all cases, thread protectors should be in place and fully engaged on the box and pin ends when moving and storing wired components. In situations where NOV IntelliServ wired tubulars are stored for extended periods, the following conditions apply: Components must not be placed directly on the ground or deck. Dunnage must be used between layers of stacked joints. Storage compound that meets NOV Grant Prideco specifications must be applied to the box- and pin-end threads before storing components. Smaller components and subs must be stored in covered baskets or subs containers, as provided. In all cases, NOV IntelliServ tubulars will be stored in compliance with NOV Grant Prideco-recommended best practices and in compliance with all local laws governing the storage of oil country tubular goods. 31

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SECTION V REPAIR 33

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Recut and Reface If damage occurs to the primary or secondary shoulders of a tubular component, the faces need to be re-machined to meet NS-2 inspection standards. The NOV IntelliServ specification is aligned with these standards, but unlike the standard industry machining practice which allows for minimum material removal to meet acceptable shoulder conditions, the machined coil groove features for the IntelliCoil communication device allow for only two reface options. The first reface option is to remove.010 from each shoulder, allowing the coil retention feature to remain intact. With this option, the coil groove does have to be re-machined for depth or other features. The second reface option is to remove.032 from each shoulder. This option removes the coil retention feature (a slight remnant is acceptable) and requires that the coil groove be machined for depth and all other features. Both reface options comply with NOV Grant Prideco tolerance specifications. NOTE With both of these options, the Pressure Equalization Ports (PEPs) remain intact and do not need to be re-machined. Pipe thread limitations permit only two.032 reface operations before the pipe must be recut (rethreaded). Any recut requires the removal of at least one thread pitch and necessitates that the coil groove (with its accompanying features) and the PEP holes be re-machined. It is important to note that with a reface or recut of any double-shouldered connection, machining operations must remove material from both primary and secondary shoulders to maintain shoulder-to-shoulder tolerances. TIP Complete IntelliServ specification for refacing tubulars is available in SOP.3.1.1.10, Rethreading Refacing Operation. 35

Reapplication of Hardbanding For most types of hardbanding, the heat required for reapplication necessitates the removal and replacement of NOV IntelliServ electrical components. Low temperature hardbanding types that eliminate this requirement are also available. Contact NOV IntelliServ for details. Reapplication of Internal Protective Coating (IPC) Should an inspection of a wired tubular reveal that the Internal Protective Coating (IPC) is chipped or damaged to the point it must be reapplied, contact NOV IntelliServ. All electronic components must be removed prior to applying new IPC and replaced afterward. Further, the IPC used must meet NOV IntelliServ product specifications. 36

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Downhole Solutions Drilling Solutions Engineering and Project Management Solutions Corporate Headquarters 7909 Parkwood Circle Drive Houston, Texas 77036 United States Phone: 713 375 3700 Fax: 713 346 7687 IntelliServ Operations Western Hemisphere 9724 Beechnut Houston, Texas 77036 United States Phone: 713 375 3700 Fax: 713 346 7687 Eastern Hemisphere Hammaren 9B P.O. Box 157 Tananger, N-4098 Norway Phone: +47 995 88 026 Fax: +47 381 94 817 Industrial Solutions Lifting and Handling Solutions Production Solutions Supply Chain Solutions Tubular and Corrosion Control Solutions Well Service and Completion Solutions National Oilwell Varco has produced this brochure for general information only, and it is not intended for design purposes. Although every effort has been made to maintain the accuracy and reliability of its contents, National Oilwell Varco in no way assumes responsibility for liability for any loss, damage or injury resulting from the use of information and data herein. All applications for the material described are at the user s risk and are the user s responsibility. One Company... Unlimited Solutions intelliserv@nov.com www.nov.com 2013 National Oilwell Varco All rights reserved D392005027-MKT-001 Rev. 02