bowen overshot manual for sale

SERIES 70 SHORT cATcH OVERSHOTS SERIES 150 RELEASINgOverview................................................................................1 & cIRcuLATINg OVERSHOTSConstruction ..........................................................................1 Overview................................................................................7Operation...............................................................................1 Use ........................................................................................7 Catching a Fish ..................................................................1 Construction ..........................................................................7 Releasing a Fish ................................................................1 Components ..........................................................................7Precautions .......................................................................... 1 Gripping and Releasing Mechanism ..................................7Maintenance ..........................................................................1 Pack-off Mechanism ..........................................................8 Disassembly.......................................................................1 Operation...............................................................................9Illustration ..............................................................................2 Catching a Fish ..................................................................9Complete Assemblies and Parts Lists .............................3 4 Releasing a Fish ..............................................................10Calculated Strengths .............................................................5 Undersized Spiral Parts ...................................................10 Undersized Basket Parts .................................................10 Subsea Retrieval..............................................................10 Sheared Drill Pipe Retrieval............................................. 11

Overshot Accessories Extension Subs....................................................................30 Oversized Guides ................................................................31 Wallhook Guides .................................................................32 Mill Guides...........................................................................33 Mill Control Packer Inner Seals ...................................34 35 Mill Control Packer Outer Seals ..................................36 37 Type E Mill Control Packers ........................................38 39 High Pressure Mill Control Packers.....................................40 High Pressure Pack-off Assemblies ....................................41 Lock Rings and Spacers......................................................42 Calculated Strengths ...................................................43 45

LEgAL NOTIcEAll references to Bowen part numbers in this literature areused to identify interchangeable tools and parts. Reference tosuch tools and parts does not imply that Logan Oil Tools is alicensee or is in any way affiliated with National Oilwell Varco.Logan Oil Tools does not sell, or offer to sell, National OilwellVarco (Bowen) products.

Manual A120 Series 70 and 150 Overshots Page 1OVERVIEW When the overshot reaches the top of PRECAUTIONSThe Logan Series 70 Short Catch Over- the fish, combined rotation and lowering Never rotate the fishing string to theshot is designed for conditions when the results in the following: left while the overshot is engaged withfish is too short to be engaged with a 1. Because this overshot has no guide, the fish unless an upward strain isstandard overshot. The grapple control the bottom of the bowl directs the maintained.is positioned above the basket grapple fish into basket grapple. Always bump down the full weight ofrather than below it to allow the basket 2. The grapple expands and the fish the fishing string before starting releas-grapple to occupy the lowest position in passes into it until it reaches the pin ing operations.the bowl. This enables the overshot tofirmly engage and retrieve a very short section of the top sub or the stop of MAINTENANCEfish. a basket grapple. Maintenance is simple, but importantCONSTRUCTION 3. The fish is now properly positioned to prolong the life of the tool and guard in the overshot. The tapers of the against mis-runs. Disassemble andThe Logan Series 70 Short Catch Over- bowl will contract the grapple and inspect the tool after each use. Checkshot assembly consists of a top sub, securely hold the fish when upward the grapple wickers for dullness andbowl, basket grapple control, and pull is exerted on the string. replace if necessary. Make other repairsa basket grapple. This overshot has no as required and reassemble.guide. The basket grapple is inserted A sharp downward bump positionsinto the bowl from the top. The design the largest portion of the bowl tapers Paint or grease the exterior of the over-of the bowl allows the basket grapple opposite the grapple and breaks the shot to prevent rust or deterioration.to fit in the lowest position. The basket hold between the bowl and grapple. Disassemblygrapple control finger then fits into the Right-hand rotation expands the 1. Using a vise, clamp the bowl be-top of the basket grapple. left-hand wickers in the grapple and tween the threaded ends. Remove the overshot can then be withdrawnOPERATION the top sub by breaking loose the from the fish by elevating the fishingBefore making up the overshot on the threaded connections between the string.fishing string and running it into the top sub and bowl.well, be sure the overshot is properly CATCHING A FISH CAUTION: Excessive force canassembled and dressed with the proper Attach the Overshot to the bottom end distort or crack the bowl. Use onlysize grapple. Each Logan Series 70 of the fishing string and run it into the enough gripping action in the viseShort Catch Overshot is designed to en- hole. The Logan Series 70 Overshot to break the connections. Avoid mak-gage a specific maximum outside diam- assembly is rotated to the right and ing heavy tool marks on the bowl.eter. Each overshot can be dressed to lowered as the fish enters the expand-engage any smaller diameter by install- able grapple. Simultaneous rotating 2. The control must first be lifted outing the desired size of basket grapple. and lowering is important. With the fish through the top of the assembly.Refer to the Parts Lists on pages 3 4. in the grapple, stop right-hand rotation Using right-hand rotation, unscrew and allow the torque to slack out on the and remove the grapple from theCheck to make sure all of the compo- bowl. fishing string. Exert an upward pull tonents are in good working order. Make fully capture the fish. Before reassembly, inspect all parts,up the overshot on the fishing string andrun it into the well. Although the Series RELEASING A FISH especially the grapple. Check the70 Overshot has no guide, the compo- wickers for damage and wear to A sharp downward force (bump) is ap-nents function in the same manner as ensure safe operation. Grease parts plied to the overshot to break the holdthe standard Logan Series 150 Releas- as they are reassembled. Grease of the grapple within the bowl. The over-ing and Circulating Overshot. or paint the exterior to prevent corro- shot is then rotated to the right while it sion. is slowly elevated to release the grapple from the fish until the overshot is clear ORDERING INFORMATION of the fish. Simultaneous rotation and When ordering, please specify: elevation is important. (1) Complete assembly or part number To release from a recovered fish, follow (2) Top sub connection the same procedure while holding the (3) Size and type of fish to be caught fish below the overshot. (4) O.D., if other than standard

2 Logan Series 70 Short Catch Overshots Manual A120 Series 70 and 150 Overshots Page 3LOGAN SERIES 70 SHORT CATCH OVERSHOTSMAXIMUM CATCH SIZE (Basket) 1-5/8 2-1/2 2-5/8 3-1/16 3-1/16 3-1/16 * 3-3/8OVERSHOT O.D. 2-5/16 3-5/8 3-3/4 3-15/16 4-5/8 4-1/8 4-3/8TYPE SH SH SH SH FS SH SHCOMPLETE ASSEMBLY Logan Part No. 170-231-D 170-363-D 170-375-D 170-394-D 170-463-A 170-413-D 170-438-D Bowen No. 38506 17615 13535 63892 11290 10434 C-11023TOP SUB Logan Part No. C1000 C1001 C1002 C10025 C1003 C1004 C10045 Bowen No. 38507 17616 13536 63893 11295 10435 A-11024BOWL Logan Part No. C2000 C2001 C2002 C20025 C2003 C2004 C20045 Bowen No. 38508 17617 13537 63894 11291 10436 B-11025BASKET GRAPPLE Logan Part No. C3000 C3001 C3002 C30025 C3003 C3004 C30045 Bowen No. 38509 17618 13538 63895 11292 10437 B-11026BASKET GRAPPLE CONTROL Logan Part No. C4000 C4001 C4002 C40025 C4003 C4004 C40045 Bowen No. 38510 17619 13539 63896 11294 10438 A-11027

MAXIMUM CATCH SIZE (Basket) 3-21/32 3-21/32 3-3/4 3-3/4 4-1/4 4-3/4 5-1/4OVERSHOT O.D. 4-11/16 5-5/8 4-3/4 5-1/2 5-3/4 5-7/8 6-1/4TYPE SH FS SH FS FS SH SHCOMPLETE ASSEMBLY Logan Part No. 170-468-D 170-563-A 170-475-D 170-550-A 170-575-A 170-587-D 170-625-D Bowen No. 10543 11297 12645 12785 13065 10560 14805TOP SUB Logan Part No. C1005 C1006 C1005 C1008 C1009 C1010 C10105 Bowen No. 10544 11298 10544 12786 13066 10561 14806BOWL Logan Part No. C2005 C2006 C2007 C2008 C2009 C2010 C20105 Bowen No. 10545 11299 12646 12787 13067 10562 14807BASKET GRAPPLE Logan Part No. C3005 C3006 C3007 C3008 C3009 C3010 C30105 Bowen No. 10546 11300 12647 12788 13068 10563 14808BASKET GRAPPLE CONTROL Logan Part No. C4005 C4006 C4007 C4008 C4009 C4010 C40105 Bowen No. 10547 11301 12648 12789 13069 10564 14809

Recommended Spare Parts:LEGAL NOTICE (1) 2 Grapples, 1 ControlAll references to Bowen part numbers in this literature are used toidentify interchangeable tools and parts. Reference to such tools andparts does not imply that Logan Oil Tools is a licensee or is in anyway affiliated with National Oilwell Varco. Logan Oil Tools does notsell, or offer to sell, National Oilwell Varco (Bowen) products.

Page 4 Series 70 and 150 Overshots Manual A120LOGAN SERIES 70 SHORT CATCH OVERSHOTSMAXIMUM CATCH SIZE (Basket) 4-3/4 6 6-1/4 6-1/2 7 7-3/4 8OVERSHOT O.D. 6-5/8 7-5/8 7-7/8 8-1/4 8-1/2 9-1/4 9-3/4TYPE FS FS FS FS FS FS FSCOMPLETE ASSEMBLY Logan Part No. 170-663-A 170-763-A 170-787-A 170-825-A 170-850-A 170-925-A 170-975-A Bowen No. 11303 11630 16975 38939 20050 25030 20060TOP SUB Logan Part No. C1011 C1012 C1013 C1014 C1015 C1016 C1017 Bowen No. 11304 11631 16976 38940 20051 25031 20061BOWL Logan Part No. C2011 C2012 C2013 C2014 C2015 C2016 C2017 Bowen No. 11305 11632 16977 38941 20052 25032 20062BASKET GRAPPLE Logan Part No. C3011 C3012 C3013 C3014 C3015 C3016 C3017 Bowen No. 11306 11633 16978 38942 20053 25033 20063BASKET GRAPPLE CONTROL Logan Part No. C4011 C4012 C4013 C4014 C4015 C4016 C4017 Bowen No. 11307 11634 16979 38943 20054 25034 20064

MAXIMUM CATCH SIZE (Basket) 9 13-1/2OVERSHOT O.D. 11-1/4 16TYPE FSCOMPLETE ASSEMBLY Logan Part No. 170-1125-A 170-1600-A Bowen No. 33878 TOP SUB Logan Part No. C1018 C1019 Bowen No. 33879 BOWL Logan Part No. C2018 C2019 Bowen No. 33880 BASKET GRAPPLE Logan Part No. C3018 C3019 Bowen No. 33881 BASKET GRAPPLE CONTROL Logan Part No. C4018 C4019 Bowen No. 33882

Logan Coding When ordering, please specify:A = FS Full Strength For all pulling torsional and jarring strain (1) Complete assembly or part numberB = XFS Extra Full Strength For extreme abuse (2) Top Sub connectionC = SFS Semi Full Strength Maximum strength for special hole conditions (3) Size and type of fish to be caughtD = SH Slim Hole For heavy pulling strains only (4) O.D., if other than standardE = XSH Extra Slim Hole For pick up jobs only Recommended Spare Parts:LEGAL NOTICE (1) 2 Grapples, 1 ControlAll references to Bowen part numbers in this literature are used toidentify interchangeable tools and parts. Reference to such tools andparts does not imply that Logan Oil Tools is a licensee or is in anyway affiliated with National Oilwell Varco. Logan Oil Tools does notsell, or offer to sell, National Oilwell Varco (Bowen) products.

Manual A120 Series 70 and 150 Overshots Page 5CALCULATED STRENGTHSMAXIMUM CATCH SIZE (Basket) 1-5/8 2-1/2 2-5/8 3-1/16 3-1/16 3-1/16 3-3/8CALCULATEDOVERSHOT O.D. STRENGTHS 2-5/16 3-5/8 3-3/4 3-15/16 4-5/8 4-1/8 4-3/8COMPLETE ASSEMBLY Logan Part No. 170-231-D 170-363-D 170-375-D 170-394-D 170-463-A 170-413-D 170-438-DMAXIMUM CATCH SIZE (Basket) 1-5/8 2-1/2 2-5/8 3-1/16 3-1/16 3-1/16 3-3/8 Bowen No. 38506 17615 13535 63892 11290 10434 C-11023OVERSHOT O.D. 2-5/16 3-5/8 3-3/4 3-15/16 4-5/8 4-1/8 4-3/8BOWL Logan Part No. C2000 C2001 C2002 C20025 C2003 C2004 C20045COMPLETE ASSEMBLY Logan Part No. 170-231-D 170-363-D 170-375-D 170-394-D 170-463-A 170-413-D 170-438-D Bowen No. 38508 17617 13537 63894 11291 10436 B-11025 Bowen No. 38506 17615 13535 63892 11290 10434 C-11023BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS):BOWL Logan Part No. C2000 C2001 C2002 C20025 C2003 C2004 C20045 MAX. CAPACITY WITH STOP 239,800 398,100 212,700 Bowen No. 38508 17617 13537 63894 11291 10436 B-11025 MIN. CAPACITY WITHOUT STOP 85,200 263,600 239,800 224,600 398,100 212,700 250,300BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS):MAX. MAKE-UP TORQUE 50% OF YIELD (FT/LBS) 600 2,550 2,800 4,000 4,600 MAX. CAPACITY WITH STOP 239,800 398,100 212,700 MIN. CAPACITY WITHOUT STOP 85,200 263,600 239,800 224,600 398,100 212,700 250,300MAX. MAKE-UP TORQUE 50% OF YIELD (FT/LBS) 600 2,550 2,800 4,000 4,600

MAXIMUM CATCH SIZE (Basket) 3-21/32 3-21/32 3-3/4 3-3/4 4-1/4 4-3/4 5-1/4OVERSHOT O.D. 4-11/16 5-5/8 4-3/4 5-1/2 5-3/4 5-7/8 6-1/4COMPLETE ASSEMBLY Logan Part No. 170-468-D 170-563-A 170-475-D 170-550-A 170-575-A 170-587-D 170-625-DMAXIMUM CATCH SIZE (Basket) 3-21/32 3-21/32 3-3/4 3-3/4 4-1/4 4-3/4 5-1/4 Bowen No. 10543 11297 12645 12785 13065 10560 14805OVERSHOT O.D. 4-11/16 5-5/8 4-3/4 5-1/2 5-3/4 5-7/8 6-1/4BOWL Logan Part No. C2005 C2006 C2007 C2008 C2009 C2010 C20105COMPLETE ASSEMBLY Logan Part No. 170-468-D 170-563-A 170-475-D 170-550-A 170-575-A 170-587-D 170-625-D Bowen No. 10545 11299 12646 12787 13067 10562 14807 Bowen No. 10543 11297 12645 12785 13065 10560 14805BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS):BOWL Logan Part No. C2005 C2006 C2007 C2008 C2009 C2010 C20105 MAX. CAPACITY WITH STOP 197,600 635,700 267,100 504,500 467,400 306,200 Bowen No. 10545 11299 12646 12787 13067 10562 14807 MIN. CAPACITY WITHOUT STOP 197,600 790,500 267,100 558,100 575,600 348,200 319,700BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS):MAX. MAKE-UP TORQUE 50% OF YIELD (FT/LBS) 5,000 7,400 8,100 MAX. CAPACITY WITH STOP 197,600 635,700 267,100 504,500 467,400 306,200 MIN. CAPACITY WITHOUT STOP 197,600 790,500 267,100 558,100 575,600 348,200 319,700MAX. MAKE-UP TORQUE 50% OF YIELD (FT/LBS) 5,000 7,400 8,100

MAXIMUM CATCH SIZE (Basket) 4-3/4 6 6-1/4 6-1/2 7 7-3/4 8OVERSHOT O.D. 6-5/8 7-5/8 7-7/8 8-1/4 8-1/2 9-1/4 9-3/4COMPLETE ASSEMBLY Logan Part No. 170-663-A 170-763-A 170-787-A 170-825-A 170-850-A 170-925-A 170-975-AMAXIMUM CATCH SIZE (Basket) 4-3/4 6 6-1/4 6-1/2 7 7-3/4 8 Bowen No. 11303 11630 16975 38939 20050 25030 20060OVERSHOT O.D. 6-5/8 7-5/8 7-7/8 8-1/4 8-1/2 9-1/4 9-3/4BOWL Logan Part No. C2011 C2012 C2013 C2014 C2015 C2016 C2017COMPLETE ASSEMBLY Logan Part No. 170-663-A 170-763-A 170-787-A 170-825-A 170-850-A 170-925-A 170-975-A Bowen No. 11305 11632 16977 38941 20052 25032 20062 Bowen No. 11303 11630 16975 38939 20050 25030 20060BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS):BOWL Logan Part No. C2011 C2012 C2013 C2014 C2015 C2016 C2017 MAX. CAPACITY WITH STOP 579,400 358,000 349,200 285,100 Bowen No. 11305 11632 16977 38941 20052 25032 20062 MIN. CAPACITY WITHOUT STOP 720,600 445,300 445,700 445,100 373,700 391,700 445,100BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS):MAX. MAKE-UP TORQUE 50% OF YIELD (FT/LBS) 12,500 22,000 24,200 27,800 30,800 MAX. CAPACITY WITH STOP 579,400 358,000 349,200 285,100 MIN. CAPACITY WITHOUT STOP 720,600 445,300 445,700 445,100 373,700 391,700 445,100MAX. MAKE-UP TORQUE 50% OF YIELD (FT/LBS) 12,500 22,000 24,200 27,800 30,800

MAXIMUM CATCH SIZE (Basket) 9 13-3/8OVERSHOT O.D. 11-1/4 16COMPLETE ASSEMBLY Logan Part No. 170-1125-A 170-1600-AMAXIMUM CATCH SIZE (Basket) 9 13-3/8 Bowen No. 33878 OVERSHOT O.D. 11-1/4 16BOWL Logan Part No. C2018 C2019COMPLETE ASSEMBLY Logan Part No. 170-1125-A 170-1600-A Bowen No. 33880 Bowen No. 33878 BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS): BOWL Logan Part No. C2018 C2019 MAX. CAPACITY WITH STOP Bowen No. 33880 MIN. CAPACITY WITHOUT STOP 874,800 BASKET GRAPPLE LOAD CAPACITY @ YIELD POINT (LBS):MAX. MAKE-UP TORQUE 50% OF YIELD (FT/LBS) 42,000 55,500 MAX. CAPACITY WITH STOP MIN. CAPACITY WITHOUT STOPNotes: 874,800 MAX.1) MAKE-UP All strengths areTORQUE 50% calculated OF YIELD theoretical (FT/LBS) yield 42,000within 55,500 points and are accurate 20%. All strengths assume a straight, steady pull and fullgrappleengagementofaroundfish.Anythinglessthanstraightpullingorfullengagementwillsubstantiallyreducethestrength. Notes:2) 1) No All tong marksare strengths should be applied calculated to the bowl. theoretical Tong yield marks points and and are other surface accurate damage within to strengths 20%. All the bowl will also reduce assume the steady a straight, strength. pull and fullgrappleengagementofaroundfish.Anythinglessthanstraightpullingorfullengagementwillsubstantiallyreducethestrength.3) Maximum recommended makeup torque is 50% of yield. Less torque may be used depending upon the situation. 2) No tong marks should be applied to the bowl. Tong marks and other surface damage to the bowl will also reduce the strength.4) Jarring may amplify the pull load by a factor of 3 to 10. 3) Maximum recommended makeup torque is 50% of yield. Less torque may be used depending upon the situation.LEGAL NOTICE All references to Bowen part numbers in this literature are used to identify interchangeable tools and parts. Reference 4) Jarring may amplify the pull load by a factor of 3 to 10.to Logan such tools and parts does not imply that Logan Oil Tools is a licensee or is in any way affiliated Series with 70 Oilwell National Short Catch Overshots Varco. Logan Oil 5Tools does not sell, or offer to sell, National Oilwell Varco (Bowen) products. Bowen is a registered trademark of National Oilwell Varco. Logan Series 70 Short Catch Overshots 5

6 Logan Series 150 Releasing & Circulating Overshots Manual A120 Series 70 and 150 Overshots Page 7OVERVIEW Logan Overshots are coded (A E) with COMPONENTSThe Logan Series 150 Releasing and the following strength designations: Gripping and Releasing MechanismCirculating Overshot is the most versa- A = Full Strength (FS)tile and commonly used fishing tool in For all torsional pulling and jarring Top Subthe industry. It is designed to externally strain The top sub is the uppermost com-engage, pack-off, retrieve, and release ponent of the overshot assembly. It isvarious types of fish, including tubing, B = Extra Full Strength (XFS) equipped with a customer specified boxcasing, drill pipe, drill collars, couplings, For extreme abuse connection to assure proper make-upand tool joints that have been lost C = Semi Full Strength (SFS) with the fishing string.or twisted off or need to be removed Maximum strength for special holefrom the wellbore. It is engineered to conditions Bowlwithstand heavy pulling, torsional and The bowl, the major working componentjarring strains without damaging or D = Slim Hole (SH) of the overshot, is located between thedistorting the tool or the fish. Its rugged For heavy pulling strains only top sub and the guide.construction, simplicity, and strength E = Extra Slim Hole (XSH) The inside diameter features a helixmake the Logan Series 150 Releasing For pick up jobs only section that conforms to the exteriorand Circulating Overshot the standard Type A (full strength) overshots are helix of the grapple. This design permitschoice among all external catch fishing recommended when casing, hole size, any expansion or compression straintools. and fish size will permit. to be evenly distributed over the entire working surface of the bowl, grapple,USE CONSTRUCTION and the fish. Any possible damage toThe Logan Series 150 Releasing and the fish or overshot is minimized.Circulating Overshot is designed to ex- The Logan Series 150 Releasing andternally engage, pack-off, retrieve, and Circulating Overshots are constructed Guiderelease various types of fish, including of the highest quality material for The lowermost component of the over-tubing, casing, drill pipe, drill collars, strength and efficiency. shot assembly is the guide. As its namecouplings, and tool joints that have Overshots consist of three main exter- implies, it guides the fish into the inter-been twisted off or need to be removed nal parts: a top sub, a bowl, and a nal gripping mechanism (grapple) offrom the wellbore. guide. Internal catch and pack-off parts the overshot. The guide also minimizesEach overshot is designed to engage, are determined by the diameter of the possible damage to the overshot bypack-off, and pull a specific size of fish. Each assembly is designed for blocking the entry of a fish that exceedstubing, casing, drill pipe, drill collars, a maximum catch diameter. A spiral the maximum catch size of the over-couplings, and tool joints, or other tools grapple, spiral grapple control, and a shot.with smooth outer diameters. With the Type A packer are used in the overshotinstallation of proper undersize parts, bowl when the diameter of the fish is Grapplesthey may be adapted to engage and near the published maximum catch The grapple fits into the bowl and is thepack-off smaller sizes. diameter of the overshot. gripping mechanism of the overshot. There are two basic types of grapples: When the diameter of the fish is con- spiral and basket. siderably below the maximum catch diameter of the overshot (usually 1/2"), a basket grapple, a mill control packer, or basket grapple control are used in the overshot bowl.

Page 8 Series 70 and 150 Overshots Manual A120 Spiral Grapple Control

Spiral Grapple Basket GrappleThe left-handed, helix shape of the with Short-Catch Stopspiral grapple conforms to the tapered This grapple is used to retrieve cou-interior helix of the bowl. The specially plings that are attached to a rupturedhardened interior wickers of the grapple section of pipe that protrudes above the Basket Grapple Controlassure positive engagement with the coupling. Two sets of wickers, each withfish. Grapple Controls a different inside diameter, are utilized. The smaller diameter threads catch the A grapple control acts as a key that pipe above the collar and provide a stop transmits torque from the overshot bowl so that the coupling can be engaged to the grapple while allowing the grap- by the larger set of threads before being ple to move vertically inside the bowl packed-off by a control packer. during operation. There are two types of grapple controls: spiral and basket. Spiral grapple controls are used with Basket Grapple spiral grapples and are always plain. Basket grapple controls are used withBasket Grapple basket grapples.The basket grapple is a slotted, expand-able cylinder with a wickered interior Pack-off Mechanismto engage the fish. Its tapered exterior If circulation is required during the fish-conforms to the interior of the bowl. ing operation, a pack-off mechanism Basket Grapple with Long-Catch Stop is required to assure circulation goesTo meet the needs of various fishing Basket Grapple through rather than around the fish. Theoperations, three types of basket grap- with Long-Catch Stop type of grapple (spiral or basket) beingples are available: plain (standard), This type of basket grapple is designed used will determine which type of pack-short-catch stop, and long-catch stop. to retrieve tool joints and collars with off mechanism is used.

Plain Basket Grapple sufficient length remaining below theThe plain basket grapple is used when grapple to allow pack-off with a plainthe milling operation has preceded the or mill control packer. The internalfishing operation. This type of basket shoulder at the upper end of the grap-grapple is used to retrieve fish with a ple prevents the fish from completelyuniform outside diameter. During fishing passing through it. This shoulder also positions the basket control packer Type A Packeroperations, the fish passes completelythrough the grapple. Wickers running around the fish for optimum pack-off. Type A Packerthe entire interior length of the grapple A Type A packer is used on overshotssecurely grip the fish. The plain basket equipped with spiral grapples. The Typegrapple is standard equipment on all A packer sleeve seals its outer diam-overshots and will always be furnished eter against the inside of the bowl. Itunless another type is specified. has an internal lip that seals around the fish. Each Type A packer is designed to pack-off the specific catch size of each spiral grapple and one should be ordered for each size grapple.8 Logan Series 150 Releasing & Circulating Overshots

Properly assemble the overshot and dress it with the correct size grapple. Outer Seal Ensure that all parts are in good, work- The plain control packer is used when ing condition. the milling operation has preceeded In fishing operations, the Logan Series the fishing operation. The mill control Mill Control Packer 150 Releasing and Circulating Overshot packer should be used when the fish will function in the same manner, wheth-Mill Control Packers requires light dressing prior to engage- er using a spiral or basket grapple.A mill control packer is used in con- ment. Only one control packer can bejunction with overshots equipped with installed in the overshot assembly at Install undersized parts if the fish isa basket grapple and should be used one time. smaller than the maximum outside di-when the fish requires light dressing ameter the overshot can engage. (Referprior to engagement. A basket grapple Type E Control Packer to tables on pages 13 29.)control is used when the fish requires The Type E Control Packer is con- In hole sizes that are significantly largerno pack-off. Mill control packers replace structed with a molded inner seal and than the fish size, install an oversizeda plain basket grapple control. The a replaceable outer seal. They are guide (refer to page 31) or a wallhookteeth on the mill control packer are de- available in two styles: plain and mill. guide (refer to page 32) to prevent thesigned only to remove small burrs. Outer seals may be replaced in the overshot from passing the fish.Only one mill control packer can be in- field. (Refer to pages 36 37 for Outer Replace the standard guide with thestalled in the overshot assembly at one Seal part numbers.) proper mill guide if the top of the fishtime. Mill control packers are manufac- is heavily burred or jagged. (Refer totured to match a specific basket grapple Overshot Accessories Mill Guides on page 33.)size. One mill control packer should be Logan Series 150 Releasing and Circu-ordered for each size of basket grapple lating Overshots can be equipped with a If the upper end of the fish is unengage-that has been ordered. wide range of accessories, including: able, install an extension sub (refer to page 30) between the top sub and theFor areas with extreme pressure, refer Extension Subs (page 30) bowl.to the special Logan Series 150 High Oversized Guides (page 31)Pressure Mill Control Packers and High Wallhook Guides (page 32) Connect the overshot to the fishingPressure Pack-off Assemblies listed on Mill Guides (page 33) string by the top sub and run it into thepages 40 41 for more information. Inner Seals for Mill Control Packers hole. (pages 34 35) The Logan Series 150 Releasing andType R Mill Control Packer Outer Seals for Mill Control Packers Circulating Overshot requires right-When an overshot is dressed with a mill (pages 36 37) hand rotation only, during both engag-control packer and pack-off is required, Type E Mill Control Packers ing and releasing operations. The right-a Type R Mill Control Packer is most (pages 38 39) hand-only rotation feature eliminatescommonly used. The mill control packer High Pressure Mill Control Packers the possibility of accidental left-handis constructed with a molded inner (page 40) unthreading.seal and a replaceable outer seal that High Pressure Pack-off Assembliesprovide a positive seal around the fish. (page 41) Catching a FishSeals may be replaced in the field if Lock Rings and Spacers (page 42)required. (Refer to pages 34 37 for CAUTION: Always shut off the cir- Refer to the pages indicated for moreInner and Outer Seal part numbers.) culating pumps before lowering the detailed information about these parts. overshot over the fish.

Never rotate the fishing string to the left while the overshot is engaged with a fish unless an upward strain Inner Seal is maintained.

Page 10 Series 70 and 150 Overshots Manual A120Slowly rotate the Logan Series 150 friction of the fish against the grapple Subsea RetrievalReleasing and Circulating Overshot causes it to unwind and expand. Con- On offshore floating rigs, drill stringassembly to the right while it is lowered tinue simultaneous right-hand rotation extends hundreds of feet from the rigover the fish. It is important to combine while slowly elevating the fishing string to the wellhead blowout preventerrotation and lowering after the overshot until the overshot has cleared the fish. (BOP) on the sea floor. Sometimes ithas reached the top of the fish and as Combined rotation and elevation is very is necessary for the rig to move (in thethe fish enters the expandable grapple. important. event of a blowout, an approachingThe guide will direct the fish into the storm, or drifting due to loss of anchor)overshot. The grapple will expand, Undersized Spiral Parts from a well site. In these situations, theallowing the fish to pass through it and When a fish is smaller than the speci- drill string can be temporarily severedthe pack-off rubber. The fish will stop fied maximum catch size of the over- inside the BOP to remove only the up-when it makes contact with the pin end shot, undersized parts are used. per end.of the top sub. If engaging an external Undersized spiral parts (spiral grapples The BOP must have at least two setsupset section with a basket grapple, the and Type A packers) are used to catch of rams a set of lower pipe rams andfish will be stopped by the solid metal fish sizes between the Maximum Catch set of shear rams above them. Land thestop in the upper end of the basket Size (Spiral) to the Maximum Catch closest tool joint on the lower pipe rams.grapple. With the fish properly posi- Size (Basket). (Refer to tables on Close the lower pipe rams to suspendtioned in the grapple, allow the right- pages 13 29.) and pack-off the string before shear-hand twist to slack out of the string. ing. Shearing produces flattened, flared Spiral grapples and type A packersCease rotation and exert an upward ends with protruding ears. should be changed for each size of fish.pull on the fishing string to fully capture They will effectively catch and pack-off The string is retrieved when the rigthe fish. The upward pull contracts the a worn fish as much as 3/32" under, returns to the well site. The end iswickers in the bowl, thereby gripping and approximately 1/32" over, the catch brought to the surface and the shearedthe fish with the grapple and holding it size of the grapple. piece is removed. Often large sectionssecure. of the BOP stack must be brought to the Some overshots, especially Logan OilIf the fish does not advance, maintain surface as well for effective retrieval, Tools code D slim hole (SH) type over-an upward strain on the fishing string making subsea sheared pipe retrieval shots, can effectively catch a fish thatand turn on the circulating pumps to a costly, difficult, and time-consuming is no more than 1/16" under maximum.force fluid through the fish. With the fish task.securely positioned, circulation seals Undersized Basket Parts By removing the standard guide, grap-the pack-off rubber around the fish Undersized basket parts (basket grap- ple, and packer, the Logan Series 150to prevent fluid from passing down the ples and mill control packers) are used Releasing and Circulating Overshotoutside. The pumps build pressure to catch sizes smaller than the Maxi- can be dressed with a mill extensionto force fluid down through the fish. mum Catch Size (Basket). (Refer to and special flat-bottomed guides (refer tables on pages 13 29.) Basket grap- to Mill Guides on page 33) to retrieveReleasing a Fish ples will effectively catch and pack-off a sheared pipe in an economical, simple,CAUTION: Before beginning releas- worn fish as much as 3/32" under, and and time-saving manner.ing operations, always bump down approximately 1/32" over, the maximum Before installing the overshot on thethe full weight of the fishing string. catch sizes listed. drill string, dress it with a mill extensionA sharp downward force (bump) is ap- Some overshots, especially Logan Oil and a flat-bottomed, long guide. Theplied to break the hold of the grapple Tools code D slim hole (SH) type over- tapered milling ribs of the mill extensionwithin the bowl. The downward force shots, can effectively catch a fish that are faced with sintered tungsten carbidepositions the largest portion of the bowl is more than 1/32" under size. on the inner diameter. The overshot istapers opposite the grapple and breaks then lowered into the BOP and over the Basket grapples and mill control pack-the hold. The Logan Series 150 Releas- end of the drill pipe. Rotation mills down ers should be changed for each sizeing and Circulating Overshot is then the flared ends and protruding ears of of fish. A plain basket grapple controlrotated to the right and slowly elevated the sheared pipe. The end of the long does not need to be changed to a millto release the grapple from the fish. guide (and the short guide) is faced with control packer when using an under-As the overshot rotates to the right, the sized basket grapple.

Manual A120 Series 70 and 150 Overshots Page 11soft metal so it will not damage the BOP After milling is completed, The Logan Exert an upward pull on the overshotpipe rams if it inadvertently comes into Series 150 Releasing and Circulating to ensure engagement. Then retract thecontact with them. Overshot is elevated to the surface. It BOP pipe rams. Raise the string to the is then dressed with a flat-bottomed rig floor and remove the severed joint.The long length of the guide also pre- short guide, an extension sub, a basket Replace the joint and resume normalvents the mill extension from touching grapple, and a mill control packer sized operations.and causing damage to the tool joint in to engage the tool joint. The overshot isthe BOP. This is of utmost importance Logan Sheared Pipe Retrieval Overshot lowered again. As the BOP is entered,as the outer diameter of this joint is assemblies are available for all sizes the milled flare-end will pass throughwhere the string will be engaged. of drill pipe and BOPs. Please inquire. the grapple and the mill control packer. Once in the extension sub, the grapple will engage and pack-off the tool joint.

Sheared Drill Pipe Mill Operation Sheared Drill Pipe Retrieval Inside Blowout Preventer The Series 150 Overshot outfitted with a mill The Series 150 Overshot outfitted with a basket extension and a special long guide with a soft grapple, mill control packer, top sub extension, metal bottom. and a special short guide with a soft metal bottom.

Manual A120 Series 70 and 150 Overshots Page 13LOGAN SERIES 150 RELEASING & CIRCULATING OVERSHOTSMAXIMUM CATCH SIZE (Spiral) 2 2-1/8 2-3/8 2-3/8 2-3/8 2-1/2 2-1/2MAXIMUM CATCH SIZE (Basket) 1-3/4 1-3/4 2 1-7/8 1-7/8 2 2OVERSHOT O.D. 2-5/16 2-5/8 3-1/8 3-1/2 4-1/8 3-3/8 3-5/8TYPE SH SH XSH FS FS SH FSCOMPLETE ASSEMBLY Logan Part No. 150-231-D 150-263-D 150-313-E 150-350-A 150-414-A 150-338-D 150-363-A Bowen No. B-8919 C-10199 9305 C-4741 1443 C-4623 C-5080TOP SUB Logan Part No. A0950 A1000 A1001 A1002 A10025 A1003 A1004 Bowen No. A-8920 A-10200 9311 B-4742 1445 A-5083 A-5081BOWL Logan Part No. A1950 A2000 A2001 A2002 A20025 A2003 A2004 Bowen No. B-8921 B-10201 9306 B-4743 1446 B-5088 B-5082STANDARD GUIDE (CUT-LIPPED) Logan Part No. B7008 A3000 A3001 A3002 A30025 A3003 A3004 Bowen No. 9404 A-10206 9312 A-4745 1450 A-5093 A-5087

SPIRAL COMPONENT PARTSPACKER Logan Part No. A4950 A4000 A4001 A4002 A40025 A4003 A4004 Bowen No. 9407 B-10202 9309 L-1453 1453 B-5089 B-3395SPIRAL GRAPPLE