API downhole fishing tools 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.
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.
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.
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.
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.
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.
Specification
Model OD mm(inch) Hole Size mm(inch) Conn.
LMX251 251(9 7/8) 273.0 ~ 295.3(10 3/4 ~ 11 5/8) 6 5/8REG
LMX216 215.9(8 1/2) 244.5 ~ 269.9(9 5/8 ~ 10 5/8) 4 1/2REG
LMX152 152(5 63/64) 168.0 ~ 187.3(6 5/8 ~ 7 3/8) 3 1/2REG
LMX143 143(5 5/8) 155.6~ 165.1(6 1/8 ~ 6 1/2) 2 7/8REG
LMX121 121(4 3/4) 130.0 ~ 139.7(5 1/8~ 5 1/2) 2 7/8REG
LMX98 98(3 55/64) 107.9 ~114.3(4 1/4 ~4 1/2) 2 3/8REG