Tesco Top Drive Equipment Life Cycel Manual - English (Book).pmd

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By decreasing forward pump pressure, there will notbe enough hydraulic flow to rotate the pipe. Now, slowly‘increase’ the pumps until the pipe begins to rotate.Maintain enough pressure on the hydraulic gauge tohold drillstring in torsion without reaching the torquerelief setting on the top drive. When maintaining statictorque over extended time periods, it is recommendedto increase the pumps to a value less than the torquerelief setting and allow the pumps to control the desiredtorque. If the top drive torque relief is activated, thehydraulic oil passing through the relief over time, willcreate excessive heat. The hot oil may, in turn, activatea power unit shut down, resulting in an untimely torquerelease of the drill string.The power module is equipped with numeroussafety shutdowns. When the hydraulic oil reachesthe high oil temperature shutdown setting, the primemover will shut down. This should be avoided,especially in situations where hole problems areencountered.Continue working the drillstring while maintaining torquewith the top drive until a free point is established. Whenthe pipe begins to rotate at this torque setting keepraising and lowering pipe in the free point increasingthe travel distance until the obstruction is cleared.Jarring:If jarring is required, the torque applied to the drillstringwill need to be released. By slowly decreasing the quilltorque shown on the hydraulic gauge, the reactivetorque in the string will overcome the quill torque andthe pipe will, in a controlled manner, rotate in reverseuntil torsion is released. Once this is done, set the slipsin order to break out the top drive.Logging:When using the hydraulic elevators to support a wireline sheave, disconnect the hydraulic hoses at theelevator quick connects to reduce the chances ofaccidental opening.Note: The hoses should also be disconnected to preventaccidental opening in any other operation where theelevators support a load other than the drillstring (forexample, when a set of secondary elevators aresupported from a nubbin in the hydraulic elevators).Running Casing:Using the top drive forrunning casing offerssome advantages overconventional methods.At the customer’srequest, Tesco canprovide a crossover subto connect the quill tothe casing, eliminatingthe need to rig-upchiksans and fill uphoses. The top drivealso provides pipe handling functions to make handlingcasing much simpler and safer.Cementing:Unless it is absolutely necessary, never attempt tocement through the top drive. With the exception ofthis rule, cementing with a top drive is similar toconventional methods.Tesco does not recommend jarring with thedrillstring connected to the quill. The drillstringshould be suspended from the elevators beforejarring commences.Disconnect hydraulic hoses at the elevator quickconnects to reduce the chances of elevators openingaccidentally.After any jarring is done the top drive technician willneed the time to perform a visual inspection of the topdrive components and fill out a ‘Post Jarring Checklist’.In the event of excessive jarring a load path inspectionmay need to be performed at the earliest convenience.Page 16 Top Drive Rig Floor Safety Orientation Doghouse Manual
Chapter 7Top DriveConsiderationsSlip and Cut Drilling Line:Some daily rig operations change when a rig is fittedwith a top drive. Some simple procedures that yourcrew has performed regularly will need to be adjustedto consider top drive issues.To slip and cut drilling line, obviously the weight of thetop drive cannot hang from the same line as the blocksalone did. The top drive technician will assist you indetermining the length of a block-hanging sling to beinstalled in the derrick to a suitable beam so that thetop drive is positioned at floor level. If your rig is alreadyfitted with a block-hanging sling, the sling and the eyeon the blocks should be rated to support the weight ofthe top drive as well as the traveling block. The topdrive will have to be connected to the drillstring and setin the slips as low as the block-hanging sling will allow,to help distribute the additional weight of the top drive.Note – When performing a slip and cut with a topdrive it is possible to pump fluid into the well ifnecessary.Important – The blocks should never be hung froma floor tugger.Top Drive Maintenance:The regular daily maintenance and inspections on thetop drive do not have to interfere with rig operations. Inorder to keep the top drive running safely and efficiently,up to 15 minutes every tour must be available to servicethe equipment. The top drive technician’s knowledgeof drilling allows him to choose a ‘window of opportunity’to do this when the top drive is accessible from a ladderon the rig floor, while minimizing the impact on thecustomer’s operation.DisclaimerThis manual is intended to provide basic informationonly, and does not constitute a comprehensiveguide to the functioning or operation of a Tesco TopDrive. It is to be used only in conjunction with theorientation and on site supervision provided byTesco personnel. The Tesco Top Drive Technicianmust be notified of any concerns or incidentsinvolving Tesco equipment and its operation.OTHER THAN AS DESCRIBED IN THEPRECEDING PARAGRAPH, TESCOCORPORATION, ITS AFFILIATED COMPANIESAND EMPLOYEES ASSUME NORESPONSIBILITY FOR USE OF THEINFORMATION CONTAINED IN THIS MANUAL.Tesco Corporation (“Tesco”) has made every effortto ensure that this manual describes the basicknowledge needed to provide a quick reference fortop drive operators.This manual is to be used in conjunctionwith an orientation and on sitesupervision.If any service or repairs need to be done on the topdrive, all of the drawworks controls and the driller’spanel must be locked out and tagged to ensure thesafety of the personnel.Important – The top drive technician must benotified of any concerns or incidents involvingTesco equipment.Top Drive Rig Floor Safety Orientation Doghouse Manual Page 17
Page 1 and 2: Bulletin 20900eTOP DRIVES CASING DR
Page 3 and 4: TABLE OF CONTENTSINTRODUCTION FOR D
Page 5 and 6: When the torque track is fastened t
Page 7 and 8: Chapter 2Component IdentificationTo
Page 9 and 10: Auxiliary Pump This amber light wil
Page 11 and 12: • Grabber ‘open’.• Pipe han
Page 13 and 14: Note: If the rig floor is too large
Page 15: Tip: If the top drive will rotate a

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