Drawworks Technology
DrawworksTechnology
IntroductionAC gear driven drawworksDC chain driven drawworksOur ADS and SSGD lines of AC electric gear driven drawworks offercutting edge technology to the drilling industry. These drawworksprovide the following benefits:Our conventional, chain driven drawworks are proven, reliablemachines that have set many standards in the drilling industry.The robust design and simplicity of these drawworks allow foreasy operation and maintenance. AC-powered motors that provide significantly more performanceand have made possible a machine that requires approximatelyhalf the space and weight with lower maintenance than traditionaldrawworks Unique AC-powered control characteristics, such as regenerativebraking and load holding without using the friction brakes Sophisticated braking systems offering precise control, whilemaximizing safety
Table of ContentsWhy Choose an NOV drawworks? .4-5Automated Drawworks System (ADS) .6-8Dual Speed Gear Driven (DSGD) drawworks . 9Single Speed Gear Driven (SSGD) drawworks. 10-11Active Heave Drilling (AHHD) drawworks . 12-13Conventional Chain Driven DC drawworks. 14-15Dual Active Heave Drilling drawworks. 16-18Aftermarket & Fleet Care . 19rig@nov.comnov.com 3
Why choose our drawworks?With over 100 years of experience and thousands of drawworks in the field, NOVis the world’s premier drawworks manufacturer. Our line of drawworks modelsrange from 700 horsepower drawworks for mobile land rigs to 9000 horsepoweractive heave drawworks for floating rigs.Our brands: Varco , National , Oilwell , Dreco By bringing the talents and resources of these legacy companies together, we are positionedto provide a wide variety of superior quality drawworks to meet any application.AC motorsDrawworks brakesWe manufacture 1150 and 1500 horsepower ACinduction motors specifically designed for continuousdrawworks oilfield drilling duty. These motors provideincreased electrical performance and superiormechanical durability.Our drawworks are equipped with several types of braking systems to providemaximum performance and safety. All drawworks are equipped with at least one ofthe following:High-quality heavy-duty construction, state-of-the-artdesign and ISO 9001 manufacturing standards ensurereliable performance in the naturally hostile oil rigenvironment. Universal disc brakesBand brakesNOV friction-plate brakesHydraulic caliper disc brakesAir caliper disc brakesBaylor eddy current brakesOur Baylor eddy current brakes and controlsystems have set the industry standard fordynamic braking since 1954. All Baylor brakesmeet DNV, ABS, and Lloyds Registry safetyand design standards, and are certified for usein hazardous environments.
Fleet Care Safety 24/7 Technical support Field service Repair Spare parts eHawk remote support NOV Technical colleges andTraining centers Installation and commissioning Field engineering RentalsDrawworks controlsWe ’ve delivered more control systems for DC and AC drawworks thanany other supplier. Whether a simple mechanical brake handle or anadvanced joystick/man-machine interface system, the purpose ofcontrols is to help the driller maximize safety and efficiency.For over 10 years, we have provided advanced automatic drilling controls,including electronic drilling systems, that use AC motors or friction-platebrakes to precisely control drum payout, maximize bit ROP and bit life,and significantly reduce drilling and tripping time and costs. Drawworkscontrols can be standalone, or they can be combined into Cyberbase or Amphion integrated control cabins.For more information, refer to these NOV drawworks control products: Electronic drilling system MotorDriller Ideal autodrillerKinetic energy monitoring system (KEMS)CyberbaseAmphionYou can be confident in the worldwide service and supportthat is available to you when you buy an NOV drawworks.Our worldwide products and services support includes service,repair, technical support, spare parts, 24/7 eHawk remotesupport, installation and commissioning, and internal andexternal training throughout the lifetime of your drawworks.rig@nov.comnov.com 5
ADS Drawworksprovide drillers with enhanced hoisting controlcapabilities which increase the efficiency,productivity, and safety of the drilling process.
Automated Drawworks Systems (ADS)ADS drawworks are equipped with AC motors which provide significantly more performanceand have made possible a machine that requires approximately half the space and weight withless maintenance than traditional drawworks.FeaturesControls Choice of two, three, or four AC motors with regenerative braking(see specifications table on the following page)Automation of repetitive drilling operations is offered through avariety of user-friendly NOV control systems. The control systemsoftware includes the following features as standard: Unique modularity of common components offering configurabledrawworks models for individual customer applications from 1800to 6000 HP Monitoring and control of brake and lube system High-capacity water and air-cooled friction-plate braking systems offerprecision control of the dynamic and static braking capabilities Robust single speed gear drive reduces space, and single unitized framewith simplified drum provides a significantly reduced moment of inertia Monitoring of AC motor temperature and cooling pressure Interface to hook load sensor (dead line) Dynamic floor and crown saver system Disc brake testing system Disc brake burnishing systemBrakes Slip and cut function An advanced braking system that offers precise proportional control toimprove drilling and tripping technology Drawworks power management system Unique AC-power control characteristics allow regenerative brakingand zero-speed load holding without using the friction-plate brakesThe advanced design of the ADS drawworks offers a smallfootprint that is ideal for modern AC land rig applicationsand offshore applications.rig@nov.comnov.com 7
Automated Drawworks Systems (ADS)Specifications – NOV ADS*ADS options with 1150 HP AC um size(in.)SkiddimensionsL x W (in.)Weight(lbs)ADS-10SD**2000180030 x 55276 x 11964,325ADS-10D **2800230036 x 71295 x 10898,800ADS-10T3200295036 x 71328 x 108112,000ADS-10Q5600460054 x 84319 x 197160,000ADS-2000SD2000200030 x 55247 x 10863,500Drum size(in.)SkiddimensionsL x W (in.)OFFSHORELANDModelLines3rd layerhook lbs)LinesMotorsGearboxBrakes2 ct x 1150HP1 ct xGB151 ct x 36 in.(A)2 ct x 1150HP2 ct xGB152 ct x 36 in.(A)3 ct x 1150HP2 ct xGB152 ct x 36 in.(A)(W)4 ct x 1150HP2 ct xGB302 ct x 48 in.(A)(W)2 ct x 1150HP1 ct xGB151 ct x 36 in.(A)3rd layerhook load(tons)MotorsGearboxBrakesADS options with 1500 HP AC motorsOFFSHORELANDModelIntermittent Continuoushorsepower horsepowerADS-30D**3600300036 x 71319 x 108105,200101214597.56987932 ct x 1150HP2 ct xGB152 ct x 36 in.(A)ADS-30T5020450054 x 84377 x 132159,000121416790897.5999.53 ct x 1500HP2 ct xGB302 ct x 48 in.(A)(W)ADS-30Q6000600054 x 84377 x 132164,0002 ct xGB302 ct x 48 in.(A)(W)2000150030 x 5591.5 x 191.553,000984.51118.51245286.6348.6407.24 ct x 1150HPADS-1500SS121416810121 ct x 1500HP1 ct xGB151 ct x 36 in.(A)* NOMENCLATURE and MODEL CLASSIFICATION:D Double motorSD Single gearbox double motorT Triple motorQ Quadruple motor(A) Air-cooled(W) Water-cooledSpecifications are subject to change without notice. ** Alternative configuration is available on request.
Dual Speed Gear Driven (DSGD) drawworksOur Dual Speed Gear Driven (DSGD) drawworks are setting newstandards in the drilling industry. These AC drawworks feature atwo-speed helical gearbox mounted directly on the drum shaft whichis ideal for any application where size and weight are critical factors.The two-speed functionality provides both extremely fast hoistingspeeds and heavy hook load hoisting capabilities. The simple designof the DSGD drawworks allows for easy operation and maintenance.Both transverse and longitudinal skid configurations are available tofit any substructure design.Features and benefitsService/Dynamic braking No HPU required No brake-water cooling system required Requires less horsepower input and fewer drives than single speeddrawworks of the same maximum hook load Lightweight small footprint and allows for easy movingbetween rig locationsNormal service braking is performed by the AC motors by generatingpower into braking resistors. The motors and frequency drives arecapable of holding the maximum hook load at zero speed indefinitely.Load speed is limited by the control system to stay within thecapacity of the motors.Park/Emergency braking All DSGD models can be CE/Atex markedA disc brake system is utilized for parking and emergency situations.It consists of two air-cooled discs with spring-applied air-releasedcalipers to provide fail-safe braking capability. These brake calipersare normally operated remotely via the NOV drawworks integratedcontrol system. Emergency brake controls on the DSGD drawworksallow the load to be manually lowered using the brake calipers.Drawworks control systemControl system software includes the following as standard: Monitoring and control of brake and lube system Monitoring of motor temperature andcooling pressure interface to hook load sensor (dead line) Dynamic floor and crown saver system Disc brake testing system Disc brake burnishing system Slip and cut functionSpecifications – NOV DSCGContinuoushorsepowerMotorsDSGD-250 (Transverse)11501DSGD-250 (Longitudinal)11501DSGD-375 (Transverse)15001DSGD-375 (Longitudinal)15001DSGD-500 (Transverse)23002DSGD-500 (Longitudinal)23002DSGD-750 (Transverse)30002ModelNumber oflines2nd layerhook sdimensionsL x W (in.)DrumdimensionsDia x L (in.)276 x 10425 x 4967,000134 x 21625 x 4967,000354 x 16528 x 5671,000146 x 26828 x 5668,000396 x 12631 x 56108,000320 x 11831 x 5692,00036 x 72127,000372 x 142Weight (lbs)Specifications are subject to change without notice.rig@nov.comnov.com 9
Automated Drawworks Systems (ADS)Single Speed Gear Driven(SSGD) DrawworksThe AC electric-powered SSGD drawworks offer a design unique to the industry. Byoverpowering a drawworks with AC motors, we created a single-shaft, single speeddrawworks with hoisting performances comparable to a conventional drawworks.The result is a simple design with few mechanical parts, a small footprint, andlightweight. These drawworks require minimal maintenance and are entirelyself-contained.
Single Speed Gear Driven (SSGD) DrawworksElectric motorsThe SSGD drawworks are equipped with 1150 HP and 1500HP AC motors. The motors feature forced air cooling and havetemperature sensors installed in the stator windings.Safety philosophyLike all NOV drawworks, the SSGD drawworks control systemis designed to provide enhanced safety and efficiency for theoperation, machinery, and the personnel onboard the rig.This is achieved by an active control philosophy with equipmentself-checks and monitoring.Single Speed GearDriven DrawworksThe primary safety requirement is that one single point of failureshall not cause any hazardous condition leading to either personnelinjury or damage to the equipment.Drawworks control systemBrakingThe drawworks control system consists of the following parts:The SSGD drawworks is designed as a lifting device for drilling operationswith fail-safe, spring-applied disc brakes for park and emergency braking. Drawworks control cabinet Miscellaneous field instrumentation Drawworks interface panel Emergency stopControl system software includes the following as standard:Normal service braking is performed by the AC motors by generating powerinto braking resistors. The motors and frequency drives are capable ofholding the maximum hook load at zero speed indefinitely. Load speed islimited by the control system to stay within the capacity of the motors. Monitoring and control of brake and lube system Monitoring of motor temperature and cooling pressure interfaceto hook load sensor (dead line) Dynamic floor and crown saver system Disc brake testing system Disc brake Burnishing system Slip and cut function Drawworks power management systemSpecifications – NOV DSCGContinuoushorsepowerMotorsNumber of lines2nd layer hookload (Tons)DrawworksdimensionsL x W (in.)DrumdimensionsDia x L (in.)SSGD-2501150168191250221 x 10826.5 x 3445,000SSGD-5003450352 x 82135,00045003327 x 14250 x 82155,000SSGD-75046004290 x 15457 x 82152,000SSGD-100060004300 x 14448 x 82161,500SSGD-100057505368 x 15455 x 9100010931250290 x 154SSGD-75010121214121412141214141657 x 100212,000OFFSHORELANDModel385 x 154Weight (lbs)Specifications are subject to change without notice.rig@nov.comnov.com 11
Active Heave Drilling(AHD) DrawworksActive Heave Drilling (AHD) drawworks offer an advancedsolution to the offshore drilling industry by combining thelatest technology in controls and design.The AHD sets new standards for compensation, accuracy, improved wireline life, workable load range, and rig safetyby providing proven, active heave motion compensation for floating rig applications. These drawworks eliminate theneed for overhead motion compensation machinery which provides a lower center of gravity and less operational cost.The AC electric motors provide improved speed and torque control independent of load and speed, and they providethe ability to keep the maximum hook load at a standstill indefinitely. In addition, braking energy is regenerated andcan be fed back into the drilling rig electrical system which increases overall rig efficiency. And due to active heavecompensation, the “drilling operational window” is increased by allowing drilling programs to continue in heavier seasthan conventional drawworks.The AHD drawworks are completely selfcontained and enclosed. Installation is simple,maintenance is kept to a minimum, and easyaccess for installation and maintenanceis emphasized. The AHD design offers alow weight and low center of gravity of thedrilling rig compared to traditional crownmounted compensation systems, providingincreased deck load and lighter derricksand substructures. Several importantcomponents are redundant to improve theavailability of the Active Heave Drawworkssystem.The AHD is designed according to API 7Kspecifications, normally under supervision bya third party like DNV, Lloyds or ABS.Specifications – NOV mber oflines2nd layerhook 910001125108112431400123514201600Specifications are subject to change without notice.Features and benefitsOperations Reduced overall equipment cost vs. traditionalcompensator systems Reduced weight on deck Increased operational capacity and availability Better drilling performance and easier equipmentlanding Lower vessel center of gravity Single high-speed allows for fast tripping and riserand BOP running Self-contained and enclosed unit More accurate heave compensation Normal drawworks operations: drilling and tripping Autodriller operations Active heave compensation of full load range of thedrawworks Landing of heavy BOP and riser loads with active heavecompensationComplete with all auxiliaries Control panel Motion reference units (redundant) Motor cooling blower skid(s) (redundant) Brakes (no additional auxiliary brakes required)rig@nov.comnov.com 13
Conventional Chain DrivenDC DrawworksBrakesOur conventional, chain driven drawworksare proven, reliable machines that haveset many standards in the drilling industry.The robust design and simplicity of thesedrawworks allow for easy operation andmaintenance.Disc brakes or band brakes are used asthe primary braking system with Bayloreddy current brakes as an auxiliary.Friction-plate brakes can be used asauxiliary brakes in conjunction withElectronic Drilling System (EDS).These drawworks are designed to providemaximum power in minimum space andfeature DC electric motor drives.ControlsPowerThese drawworks can be controlledremotely or by a manual driller’s controlconsole which is mounted on the skid.These drawworks are powered withDC motors.Specifications – NOV Conventional Chain Driven Drawworks*OFFSHORELANDModelHorsepowerNumber oflinesHook load (Tons)Drum clutch lowDrum clutch highTransmission lowTransmission highTransmission lowTransmission E1000110-UE 37.56252040-UDBE and2040-UDBEL40001012141687910171144.51263* NOMENCLATURE and CLASSIFICATION:E Electric (has band brakes)UDBEL Universal Disc Brake Electric Long DrumUE Unitized Electric (has band brakes) UDBE Universal Disc Brake ElectricSpecifications are subject to change without notice.
Total quality control andworldwide servicesare NOV’s assuranceof optimum productperformance inthe field.rig@nov.comnov.com 15
Dual Active HeaveDrawworks (AHDD)The Dual AH drawworks solution builds on the proven performance and value deliveredby NOV’s active heave compensating drawworks, which has been in operation onseveral rigs since 1999.The control system for the Dual AH drawworks solution is identical to that of our singleAH drawworks system, with the addition of a link between the two drawworks.Traditional top mounted compensators are eliminated using the dual AH drawworks,reducing components in the derrick and lowering the rig’s center of gravity as well asincreasing available deck capacity.Numerous improvements related to wire rope wear have been successfully implementedin our dual AH drawworks technology, including a larger drum with less layers, largersheaves, larger wire rope, and a larger rope/sheave ratio. These improvements extenddrill line life to a larger degree than the fatigue induced by heave compensation.With significantly fewer moving parts and a simpler brake design compared totraditional drawworks, the dual AH drawworks provides greater reliability. The dualAH drawworks is mounted on the drill floor or lower where it is easy to access andmaintain. Traditional compensators are mounted high in the derrick and are difficult andhazardous to access even in desirable weather conditions.The dual AH drawworks does not have any stroke or pressure issues to consider. Theoperator simply activates the active heave compensating mode and the control systemphases the drum rotations with the vessel heave. Operating a joystick activates hoistingor lowering. The dual AH drawworks provides significant heave compensation because itis not limited by cylinder stroke found in traditional systems.
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Dual Active Heave Drilling Drawworks (AHDD)Advantages and featuresThere are numerous advantages associated with installing twoindependent AH drawworks as a dual AH drawworks solution versus asingle drawworks.RedundancyIf one unit fails, the other provides: 100% Lifting capacity 50% Speed capacity 50% Heave compensating capacity at high loads 30% Heave compensation capacity at low loadsContinuous uninterrupted operations can continue even if one un
DC chain driven drawworks Our conventional, chain driven drawworks are proven, reliable . The motors and frequency drives are capable of holding the maximum hook load at zero speed indefinitely. Load speed is limited by the
Max hook load dual drawworks 16 lines 1,000 sT (907 mT) Max hook load single drawworks 16 lines 1,000 sT (907 mT) Fast line pull 137,789 lbs (62,500 kg) Weight 142,000 lbs (69,400 kg) x 2 Dimensions (LxWxH) Drill line diameter Max continuous power 9,200 Hp Max intermittent power 12,880 Hp Max block travel 16 lines (Dual drawworks)
International ISO standardization seminar for the reliability technology and cost area Statoil Business Centre, Stavanger, Norway,26 April 2016 . National Oilwell Varco, and Archer the Well Company . LOO Low output 27/12/2015 04:30 DRAWWORKS AUX.
Drawworks Motor * Blower Skid in acc.to GA Drawing: 3-10703 * Blower Skid in acc.to Purch. . Efficiency by technology 2-3684 2-3584 3-10703 . Reference project: Deepsea Rig . The GM4000 is a state of the art top-side from National Oilwell Varco and Nymo. Similar References: Project to owners of: Awilco: WilPromotor WilPioneer WilInnovator
Supplier of vapour recovery technology, systems and services to O&G installations 100%. . Drawworks & Mud pumps 4-5 Total revenue excl R&MS 2.5 Riser & Mud Systems 6-7 Total . President and CEO of National Oilwell Varco, a supplier of oilfield services and equipment to the
Robert Mitchell- Halliburton Technology Fellow.1:10 p.m. - 1:35 p.m. Discrete Torque and Drag Model . National Oilwell Varco 2007 . Bureau of Safety and Environmental 2008 . Enforcement . Automatic Control of Drawworks. Bahri Kutlu. Rheology of Lightweight Drilling Fluids with Microsphere Additives .
cation while drilling in water depths up to 27,000 feet (8230 me ters). The drilling system collects cores from beneath the sea floor with a derrick and drawworks that can handle 30,000 feet (9144 meters) of drill pipe. More than 12,000 square feet (1115 square meters) of space distributed throughout the ship is de
ends, new pulsation dampeners. Page 3 THE DRAWWORKS is a newly refurbished 2000 HP, National 1320 UE Unit with new 7838 auxiliary brake, and all new bearings and clutches. . Equipment and Centrifuges), Hydril (BOP's),
Thermal Management and Packaging of High Temperature Automotive Power Electronics Gilbert Moreno 3D Power Electronics Integration and Manufacturing June 26, 2018 This presentation does not contain any proprietary, confidential, or otherwise restricted information. NREL 2 Outline Motivation and objectives Describe the cooling systems currently used in automotive power electronics .
