ORCHID ENERGY-Releasing and Circulating Overshot

OVERSHOT WITH BASKET GRAPPLE

RELEASING AND CIRCULATING OVERSHOT

TECHNICAL SUMMARY

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.
The releasing and circulating overshot 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.
Overshot consists of three outside parts: top sub, bowl, and standard guide. The basic overshot may be dressed with either of two sets of internal parts, if the fish diameter is near the maximum catch of the overshot, a spiral grapple, spiral grapple control, and type “A” packer are used. If the fish diameter is considerably below maximum catch size (½” or more) a basket grapple and a mill control packer are used.

SPECIFICATION

Model	O.D. (mm)	Max.catch size(mm)		API Connection	Model	O.D. (mm)	Max.catch size(mm)		API Connection
Model	O.D. (mm)	Spiral grapple	Basket grapple	API Connection	Model	O.D. (mm)	Spiral grapple	Basket grapple	API Connection
LT-T89	89	60.3	47.6	NC26	LT-T194	194	159	141	NC50
LT-T92	92	73	63.5	NC26	LT-T200	200	159	141	NC50
LT-T95	95	76.2	66.6	NC26	LT-T206	206	178	163	NC50
LT-T102	102	73	60.3	NC26	LT-T206A	206	168	152	NC50
LT-T105	105	85.7	73	NC31	LT-T219	219	178	159	NC50
LT-T114	114	89	75	NC31	LT-T232	232	203	187	NC50
LT-T117	117	89	78	NC31	LT-T244	244	206	184	6 5/8 REG
LT-T127	127	95	80	NC38	LT-T260	260	219	200	6 5/8 REG
LT-T143	143	120.6	102	NC38	LT-T270	270	228.6	209.6	6 5/8 REG
LT-T152	152	128	111	NC38	LT-T273	273	241.3	216	6 5/8 REG
LT-T168	168	127	114	NC50	LT-T286	286	244.5	225.4	6 5/8 REG
LT-T168B	168	139.7	120.6	NC50	LT-T298A	298	257	238.1	6 5/8 REG
LT-T181	181	146	127	NC50	LT-T340	340	286	260	6 5/8 REG