China Fishing Tools in Downhole Operation

FISHING TOOLS
H Safety Joint
H safety joint is one kind of downhole safety equipment for fishing, washover and testing. which is connected needed parts in downhole. It could bear all kinds of pulling and pushing loading and deliver torque.once, it is easy to with draw once the safety joint when needed, so that is convenience to pull out upper pipe string. It is also easy to make up safety joint to go on working.

ModelOD mm(inch)Bore ID mm(inch)Conn.HJ105105(4 1/8)38.1(1 1/2)NC31(NC31LH)HJ121121(4 3/4)50.8(2)NC38(NC38LH)HJ159159(6 1/4)57.2(2 1/4)NC50HJ165165(6 1/2)70(2 3/4)NC50(NC50LH)HJ168168(6 5/8)70(2 3/4)NC50HJ168168(6 5/8)71(2 13/16)NC50HJ178178(7)70(2 3/4)NC50HJ203203(8)80(3 5/32)6 5/8REG

AJ Safety Joint
AJ safety joint is one kind of safety back off tool which is connecting with drilling string and all kinds of working string in downhole operation. When sticking in well and need back off, it is easy to back off from connection thread of its body. Pull out drill pipe and tubing above its pin joint. It is easy and reliable to back off or make up again in downhole. During in drilling operation, safety joint works like one drill pipe sub, its ID coincides with connected pipe string, so there is no problem for operation in the bore of pipe string. Safety joint body adopts for special wide saw form connection thread, ingenious tension structure design, when connecting, just need certain torque to connect the whole. Unless given more than 40% opposite, it won't release automatically in downhole working.

ModelOD mm(inch)ID mm(inch)Conn.AJ-C8989(3 1/2)44(1 47/64)NC26AJ-C9595(3 3/4)44(1 47/64)NC26AJ-C105105(4 1/8)50.8(2)NC31AJ-C121121(4 3/4)62(2 7/16)NC38AJ-C127127(5)62(2 7/16)NC38AJ-C159159(6 1/4)71.4(2 13/16)NC46AJ-C165165(6 1/2)82(3 1/4)NC50AJ-C178178(7)82(3 1/4)NC50AJ-C203203(8)82(3 1/4)6 5/8REGAJ-C229229(9)88.9(3 1/2)7 5/8REG

Releasing and Circulating Overshot
LT Overshot is one of the fishing tools which is fishing the pipes externally. It can catch drill collar, drill pipe, tubing, subs and other pipes. Because of the seals, the fluid can circulate with the high pump pressure after catching the fish. The top of the fish will be milled by under mill shoe. It can also work with jars to catch the stuck fishes. If the catched fish can't be release from stucking ,we could release the overshot and lifting the drill string.
Specification

ModelOvershot OD mm(inch)MAX. Catch Sizes mm(inch)Conn.Spiral Grapple mm(inch)Basket Grapple mm(inch)LT-T324324(12 3/4)282.6(11 1/8)266.7(10 1/2)6 5/8REGLT-T298298(11 3/4)257.2(10 1/8)228.6(9)6 5/8REGLT-T270270(10 5/8)228.6(9)203.2(8)6 5/8REGLT-T206206(8 1/8)177.8(7)159(6 1/4)NC50LT-T146146(5 3/4)117.5(4 5/8)108(4 1/4)NC38LT-T102102(4)77.8(3 1/16)65(2 9/16)NC26

Short Catch Overshot
Short catch overshot is used for catching short length fish which the stuck point is closed or above the coupling, such as tubing, drill pipe, sucker rod and subs. If the fish head is more than 50 mm, it will be caught. The short catch overshot has features of small volume, low cost, reasonable structure design, convenient to use and wide application. It can prevent overshot self-locked when in large torque, and improve the fishing success rate and work efficiency.
Specification

ModelOvershot OD mm(inch)Fishing Range mm(inch)Conn.Hole Size mm(inch)Tensile
Load
KNDYLT9595(3 3/4)47 - 49
(1 27/32) - (1 59/64)NC26114.3~120.8
(4 1/2) - (4 3/4)450DYLT105104.8(4 1/8)59.7 - 61.3
(2 11/32) - (2 13/32)NC31127 - 139.7
(5)~(5 1/2)500DYLT146146(5 3/4)100.4 - 103.2
(3 15/16) - (4 1/16)NC38168 - 178
(6 5/8) - (7)630DYLT206206(8 1/8)165 - 170
(6 1/2)~(6 11/16)NC50224 - 228
(8 13/16) - (9)1018

Casing Spear

casing spear is a tool for fishing intemally.It has features of simple operation, high strength, large grapple area ,wide fishing range. It can be used individually, and also can be used with cutting tools to finish cutting and fishing at one time. If the fishing work is not
successful, tools can be easily release from the fish.

Casing spear is mainly used for catch casing. The fish can be pulled or jarred out from the well by catching the inner diameter of the fish. It is especially designed for marine operations.

ModelCasing Size mm(inch)Sub OD mm(inch)Spear ID mm(inch)Conn.LM7-AZ177.8(7)146(5 3/4)38.1(1 1/2)NC38LM9 5/8-AZ244.5(9 5/8)210(8 17/64)50.8(2)4 1/2REGLM13 3/8-AZ339.7(13 3/8)299(11 49/64)71(2 13/16)NC50LM18 5/8-AZ473.1(18 5/8)299(11 49/64)71(2 13/16)6 5/8REGLM20-AZ508(20)299(11 49/64)71(2 13/16)6 5/8REG

LM-T Releasing Spear
LM-T releasing spear is one of fishing tools to fishing internally. Mainly are used to catch drill pipe, casing,tubing and other tubulous junks during oil and gas field of well repairing.It can be used with other tools such as casing cutterjars.If the fish is struck,releasing the spear and lifting the drilling tools.
Specification

ModelMandrel OD mm (inch)Fish ID mm(inch)Conn.LM-T8080(3 5/32)38.1 - 79.38(1 1/2 ~ 3 1/8)NC23LM-T8989(3 1/2)47.4 - 66(1 7/8 - 2 39/64)NC26LM-T105105(4 1/8)63.5 - 79.38(2 1/2 ~ 3 1/8)NC31LM-T105105(4 1/8)79.38 - 104.78(3 1/8 - 4 1/8)2 3/8REGLM-T114114(4 1/2)63 - 66(2 31/64 - 2 39/64)3 1/2REGLM-T121121(4 3/4)54 - 102.3(2 1/8 - 4 1/32)NC38LM-T127127(5)133.35 - 180.98(5 1/4 ~ 7 1/8)NC38LM-T159159(6 1/4)171.8(6 49/64)NC46LM-T168168(6 5/8)86 - 170(3 25/64 - 6 45/64)NC50LM-T203203(8)230.2(9 1/16)6 5/8REGLM-T209209.6(8 1/4)216.8 - 224.4(8 17/32 - 8 27/32)6 5/8REGLM-T209209.6(8 1/4)315.3 - 323.0(12 27/64 - 12 23/32)6 5/8REG

Releasing Back off Spear
Releasing back off spear is used for fishing, back off and releasing the fish. It can catch and transmit left hand torque during back off. It can instead of left hand taper taps and die collars. The function is similar to back off sub.The difference is that it doesn't need to make up thread with fish and catch at any part internally.
Specification

ModelSizeFishing ID mm(inch)Tensile
Load
(KN)Initial Pulling Force and Relevant TorqueConn.Pulling Force (KN)Torque
N-MDLM-T602 3/850.8(2)33014743132 7/8REGDLM-T732 7/869.9(2 3/4)5001665799NC31DLM-T1144 1/2101.6(4)850196115224 1/2REGDLM-T1405 1/2125.7(4 61/64)88019613263NC50

How to order: Sizes and connections; Please specify special requirements.

Sliding Block Spear
Sliding block spear is an inside fishing tool for fishing the junk internally such as fishing drill pipe, tubing, washover pipe, liner, packer, water distributor, etc, and it also can do back off for the stuck junk or used with other tools(such as jar and back off tool).
Specification

ModelOD mm(inch)Conn.Specification & PropertyFishing ID mm(inch)Tensile Load KNHLM-D(S)4873(2 7/8)2 3/8TBG38(1 1/2)170HLM-D(S)6086(3 3/8)NC2642~53.8(1 5/8~2 1/8)314HLM-D(S)73105(4 1/8)NC3152.6~64(2 1/16~2 1/2)540HLM-D(S)178175(6 7/8)NC38152.4~168.3(6~6 5/8)5928

How to order: Sizes and connections; Please specify special requirements.

Back-off Sub
Back-off sub is also called back off spear. It can instead of taper tap to fish or back off when dealing with sticking. If the fish stuck or can't be back off sub, and then trip the drilling tool.
Specification

ModelOD mm(inch)Conn.ID mm(inch)OAL mm(inch)ZDK105105(4 1/8)NC31B LHxNC31P15(19/32)580(22 13/16)ZDK121121(4 3/4)NC38B LHxNC38P22(57/64)628(24 3/4)ZDK165165(6 1/2)NC50B LHxNC50P28(1 1/8)690(27 3/16)ZDK178178(7)6 5/8REGB LHx6 5/8REP28(1 1/8)700(27 9/16)ZDK203203(8)6 5/8REGB LHx6 5/8REP35(1 3/8)723(28 1/2)

Reverse Circulating Junk Basket

Reverse circulating junk basket is a fishing tool which uses the drilling fluid partly reverse in the bottom hole, to latch small junk in the basket, It is used for fishing all types of small junk, objects in well bores, such as bit cines, cutting blades and hand tools, etc.
Specification:

ModelBody OD mm(inch)Mill Shoe OD mm(inch)Max. Fish Size mm(inch)Steel Ball OD mm(inch)Hole Size
mmConn.LL114114(4 1/2)120(4 3/4)80(3 1/8)32(1 1/4)117.5~1272 7/8REGLL121121(4 3/4)127(5)80(3 1/8)32(1 1/4)130~139.73 1/2REGLL165165(6 1/2)171(6 3/4)124(4 7/8)40(1 9/16)212.7~241.34 1/2REGLL286286(11 1/4)291(11 7/16)220(8 11/16)48(1 57/64)298.5~311.26 5/8REGLL381381(15)400(15 3/4)315(12 3/8)60(2 23/64)406.4-444.57 5/8REG

ITCO Junk Basket

ITCO junk basket is used to catch small junks from down hole, such as ball, tong, cone, cutters, hand tools, iron junk, etc. The principle is to use the mud of inverse well flushing with large circulating rate,high pressure to shock down hole. So the junk suspensions move to impulse the basket into the cylinder. When stop the pump, the basket set back to prevent the junk out of the basket
Specification:

ModelMax. OD mm(inch)Conn.Hole Size mm(inch)OAL mm(inch)LL-P146151(5 15/16)NC38155.6 - 165.1(6 1/8 - 6 1/2)1376(54 11/64)LL-P200205(8 5/64)NC50212.7 - 241.3(8 3/8 ~ 9 1/2)1766(69 17/32)LL-P280286(11 1/4)6 5/8REG298.5 - 311.2(11 3/4 - 12 1/4)1846(72 43/64)LL-P381381(15)7 5/8REG406.4 - 444.5(16 - 17 1/2)1780(70 5/64)

Junk Sub
Junk sub is a special tool for catching the heavy iron fillings or grits which are too heavy to be completely cir­culated out of the hole. It is important for bottom-hole cleaning, ensuring the normal work of the bit and service life.
Because of the different interspace to the wellbore between the cup OD and the rim of cup, the fluid speed dropped promptly and form a vortex, meanwhile, the carry ability of fluid also dropped. So the heavy objects in the fluid will fall into the cup and carried out in the trip process.

ModelHole Size (mm)Cup OD mm(inch)Sub OD mm(inch)ID mm(inch)Conn.SLB94108 - 117.594(3 11/16)79.3(3 1/8)20(25/32)2 3/8REGSLB102117.5 - 124102(4)92(3 5/8)32(1 1/4)2 7/8REGSLB127152.4 - 162127(5)105(41/8)38(1 1/2)3 1/2REGSLB168165 - 190.5168(6 5/8)146(5 3/4)57(2 1/4)4 1/2REGSLB203235 - 279.5203(8)168(6 5/8)57(2 1/4)4 1/2REGSLB229254 - 305229(9)197(7 3/4)71(2 13/16)6 5/8REGSLB330374.7 - 444.5330(12 1/2)241(91/2)76(3)7 5/8REG

Cone Junk Catcher
Cone junk catcher is used to catch the small junk from down hole, such as cone, cutters, hand tools, iron junk, etc. It has advantages of simple structure, safe and reliable using. Especially in the deeper structured well. It can protect the bit when using this tool to clean the bottom hole before using the PDC bit.
Specification

ModelOD mm(inch)SpecificationConn.YL9898(3 7/8)Suitable for Φ127(5")casing and Φ117(4 5/8")well hole,max. catching Φ45, finger type claw shrinking pressure 17.5Mpa,bursting pressure 21.8Mpa.2 7/8REGYL146146(5 3/4)Suitable for Φ178(7")casing and Φ152.4(6")well hole,max. catching Φ90, finger type claw shrinking pressure17.5Mpa,bursting pressure 21.8Mpa.NC38YL200200(7 7/8)Suitable for Φ244(9 5/8")casing and Φ216(8 1/2")well hole,finger type claw shrinking pressure 17.5Mpa, bursting pressure 21.8Mpa.NC50

How to order: Sizes and connections; Please specify special requirements.

Fishing Magnet
The fishing magnet is used for retrieving all types of small junk objects in the oil and geological drilling operation. It has advantages of simple structure,convenient operation, reliable property, small volume and light weight. Magnetize and attract the drilling clip, cones, bearings, slips, tong pins and other small junk objects only by the proper permanent magnet to catch the small junk object effectively and keep down hole cleaning.
Fishing magnet is used to absorb the magnetized junk objects by permanent magnet. The bottom is equipped with a protective cover that can prevent magnet damage if don't use. It can be divided into A and B structures according to the different usage.
Specification

ModelOD mm(inch)Conn.Attraction(Kg/cm2)Hole Size (mm)CL381381(15)7 5/8REG7406 444.5(16 17 1/2)CL311311(12 1/4)6 5/8REG7.2346-381(13 5/8-15)CL254254(10)6 5/8REG7.2267-312(10 1/2-12 1/4)CL203203(8)NC507.7215-247(8 1/2-9 3/4)CL178178(7)NC508.5193-215(7 5/8-8 1/2)CL146146(5 3/4)3 1/2REG8.0160-185(6 5/16-7 5/16)CL102102(4)3 1/2REG7.8114-135(4 1/2-5 5/16)CL8383(3 1/4)2 3/8REG7.795-114(3 3/4-41/2)

Reverse Circulating Fishing Magnet
Reverse circulating fishing magnet is a fishing tool which uses of drilling fluids partly reverse in bottom hole to absorb the junk.
Reverse circulating fishing magnet consists of top sub, outer barrel, steel ball, cup, ballseat, magnet core and mill guide.
Reverse circulating fishing magnet make the fish suspended by,reverse flushing fluid impact bottom hole with large flowing and high pressure, and the fist is absorbed by,magnet to achieve fishing.
Specification

ModelOD mm(inch)Conn.Attraction(Kg/cm2)Hole Size (mm)CL-FP8686(3 3/8)2 3/8REG7.795-110(3 3/4-4 5/16)CL-FP146146(5 3/4)NC388.595-110(3 3/4-4 5/16)CL-FP200200(7 7/8)NC507.8216-241(8 1/2-91/2)CL-FP381381(15)7 5/8REG6.9406-444(16-17 1/2)

Three Ball Fisher
Three ball fisher is a professional fishing tool to catch sucker-rod coupling or its upset shoulder.It consists of barrel, steel ball, spring and guide shoe etc. After the sucker rod with coupling or shoulder embedding guide shoe, the coupling or shoulder push the steel ball then increase in circle of three ball. After coupling or shoulder passed three balls, the balls fall back because of gravity, then lift drill string, the coupling or shoulder will be block by those three balls due to bigger size, which will clamping sucker-rod from radial direction.
Specification:

ModelOD mm(mm)Conn.Fish Size (inch)Hole Size (inch)LSQ95-195(3 3/4)2 3/8TBG5/8,3/441/2LSQ114114(41/2)NC312 3/85 1/2LSQ114143(5 5/8)NC382 7/861/2

Taper Tap
Taper tap is a fishing tool which making thread and engaging fish internally,such as drill pipe and tubing.It has high success rate for fishing tubular fishes with coupling. It works with right and left hand drill pipe,and other tools.It can be used in different fishing process.The taper tap is made of high quality alloy steel and processed by special heat treatment. In order to make threads easily, it is made with chip groove .
Specification

ModelSub OD mm(inch)Conn.Wicker Range mm(inch)GZ-NC2689(3 1/2)NC2633.3 - 55(1 5/16 - 2 3/16)GZ-NC31105(4 1/8)NC3179 - 105(3 1/8 - 4 1/8)GZ-NC38121(4 3/4)NC3882 - 121(3 1/4 - 4 3/4)GZ-NC50165(6 1/2)NC50127 - 165(5 ~ 6 1/2)GZ-6-5/8REG203(8)6 5/8REG165 - 203(6 1/2 - 8)

Die Collar
Die Collar is an external fishing tool which is engaged on the outside wall of tubing objects, such as oil tubing and drill pipe.It is used to fish the cylinder junks which have no inner bore or the inner bore is blank off. Die collar can work with right and left hand thread drill pipe and other tools. It can be used in different fishing process.The fishing thread is 5 threads per inch, taper 1:6. The hard and shap edge of fishing threads can make threads easily.When the fish enters in die collar, it made the thread on outside of fish by rotating the drilling tools.
Specification

ModelSub OD mm(inch)Conn.Wicker Range mm(inch)MZ-NC2689(3 1/2)NC2631 - 57(1 1/4 ~ 8 1/4)MZ-NC31105(4 1/8)NC3189 - 93(3 1/2 ~ 3 11/16)MZ-NC38121(4 3/4)NC3890 - 110(3 9/16 - 4 5/16)MZ-NC50165(6 1/2)NC50120 - 135(4 3/4 - 5 5/16)

Internal Hook
The internal hook is used for fishing all kinds of ropes and other fishes from the casing or tubing, such as wire lines, logging steel pieces, paraffin cutters, etc. when internal hook inserts into the ropes or other fishes, then pick up the drilling tools and the hook tooth will carry the fishes to the ground.
Specification:

ModelMax.OD mm(inch)Conn.Casing/Tubing SizeNG7373(2 7/8)2 3/8UP TBG31/2 TubingNG9595(3 3/4)NC2641/2 TubingNG114114(41/2)NC315 1/2 CasingNG150150(5 7/8)NC387 CasingNG190190(7 1/2)NC389 5/8 Casing

External Hook
The external hook is used for fishing all kinds of ropes, lifting bail, hollow short cylinders, short rope slings, from the casing or tubing. When the external hook can be inserted into the ropes or other fishes,then pick up the drilling tool and the hook tooth will hook the fishes and take them to the ground.
Specification:

ModelMax. OD mm(inch)Conn.Casing/Tubing
SizeWG7373(2 7/8)2 3/8UP TBG31/2 TubingWG9595(3 3/4)NC2641/2 TubingWG114114(4 1/2)NC315 1/2 CasingWG150150(5 7/8)NC387 CasingWG190190(7 1/2)NC389 5/8 Casing

Junk Mill
Milling tool is a kind of tool for milling the fishes. Such as bits, cone, cutter gauge, slip elements, swivel wash pipes, subs, parts of deep-well pump, etc.
The flat bottom and concave junk mill milling the fishes with the effect of drilling pressure by the YD alloy and anti-abrasive material on its bottom surface. The junk was carried out of well by the drilling fluid.
Specification
Flat bottom junk mill specification

ModelOD mm(inch)Conn.OAL mm(inch)PMX105105(4 1/8)NC23380(15)PMX114114(4 1/2)NC26390(15 3/8)PMX140140(5 1/2)3 1/2REG380(15)PMX195195(7 11/16)4 1/2REG400(15 3/4)PMX215215(8 1/2)4 1/2REG400(15 3/4)PMX311311(12 1/4)6 5/8REG440(17 5/16)PMX406406(16)7 5/8REG500(19 11/16)

Concave junk mill specification

ModelOD mm(inch)OAL mm(inch)Conn.AMX260260(10 1/4)400(15 3/4)6 5/8REGWG311311(12 1/4)440(17 21/64)6 5/8REGWG216215.9(8 1/2)400(15 3/4)NC50AMX190190(7 1/2)400(15 3/4)4 1/2REG

Pilot Mill
The pilot mill is used to mill the fishes which have inner bore instability and shake in the well, such as drill pipe,drill collar,tubing, etc.
The pilot mill is made up of mill shoe body and pilot cone, as the following picture.The upper part of the mill shoe body is inner thread, the lower part is cylinder which diameter is bigger. Welding YD alloy and anti-abrasive material on the back plane of pilot cone and mill shoe body. The pilot cone has the effect of leading and fixing the top of the fish. And there are 2-4 water crossing grooves on the back plane of the mill shoe body to make sure it can circulate unblocked.

Specification

ModelOD mm(inch)Hole Size mm(inch)Conn.LMX251251(9 7/8)273.0~295.3(10 3/4 - 11 5/8)6 5/8REGLMX216215.9(8 1/2)244.5~269.9(9 5/8 - 10 5/8)4 1/2REGLMX152152(6)168.0~187.3(6 5/8 - 7 3/8)3 1/2REGLMX143143(5 5/8)155.6~165.1(6 1/8 - 6 1/2)2 7/8REGLMX121121(4 3/4)130.0~139.7(5 1/8 - 5 1/2)2 7/8REGLMX9898(3 7/8)107.9~114.3(4 1/4~4 1/2)2 3/8REGHow to order: Sizes & connections; Please specify special requirements.

The pilot mill shoes locate the fish by the cone which is entered into the fish, and then rotate with the drilling tool, the mill shoes welded with YD alloy grind the fish.

Taper Mill
The taper mill is mainly used for restoring the deformational fish's top or restoring the crimping and burrs during drilling and clean the mineral crystallization and other hard stuff on the well to resume bore size. The taper mill use its alloy to mill the crystallization and other impurities on the inner wall of the casing. The cylindrical part has the effect of centralizing, the junk is carried to the ground by flushing fluid.

Specification

ModelOD mm(inch)Conn.OAL mm(inch)ZMX7676(3)2 3/8REG380(14 31/32)ZMX102102(4)NC26620(24 13/32)ZMX146146(5 3/4)NC38700(27 9/16)ZMX206206(8 1/8)NC38700(27 9/16)How to order: Sizes & connections; Please specify special requirements.

Impression Block
Impression block is used for judging the depth of fish and shape of fish's top. In order to make workers know the shape of fishing top and location, and choose suitable fishing tools to fish successfully.
Impression block is made of joint steel body and Pub rooted in bottom of joint steel body,there is a circle hole in center of impression block to circle drill fluid. there is ring groove on the casting part ofjoint so that fixing impression block, joint connects with pipe string with its upper connection thread.
Specification:

ModelConn.OD mm(inch)ID mm(inch)OAL mm(inch)PQY4067 5/8REG406(16)35(1 3/8)483(19)PQY206NC50206(8 1/8)30(1 3/16)420(16 35/64)PQY168NC50168(6 5/8)30(1 3/16)400(15 3/4)PQY130NC38130(5 1/8)20(25/32)380(14 31/32)PQY1273 1/2REG127(5)20(25/32)380(14 31/32)PQY1052 3/8REG105(4 1/8)15(19/32)360(14 11/64)

How to order:
Sizes & Connections; Please specify special requirements.