Whipstock is called deflector tool .It is specialized tool for guiding mill tool from one side milling casing to form elliptical window.
There are type SMD cementing deflector ,type KMD packer anchored deflector.
|
Type
|
O.D.
(mm)
|
Chamfer length
(mm)
|
Connection
|
(mm)
I.D. of suitable casing
|
Type
|
O.D.
(mm)
|
Chamfer length
(mm)
|
Connection
|
(mm)
I.D. of suitable casing
|
|
SMD114
|
114
|
300
|
NC31
|
124.3—127.3
|
YMD114
|
114
|
300
|
NC31
|
124.3—127.3
|
|
SMD139
|
139
|
300
|
NC38
|
144.2—153.7
|
YMD139
|
139
|
300
|
NC38
|
144.2—153.7
|
|
SMD152
|
152
|
300
|
NC38
|
154.8—166.1
|
YMD152
|
152
|
300
|
NC38
|
154.8—166.1
|
|
SMD203
|
203
|
300
|
6 5/8″REG
|
216.8—228.7
|
YMD203
|
203
|
300
|
6 5/8″REG
|
216.8—228.7
|
|
KMD114
|
114
|
300
|
NC31
|
124.3—127.3
|
FMD114
|
114
|
300
|
NC31
|
124.3—127.3
|
|
KMD139
|
139
|
300
|
NC38
|
144.2—153.7
|
FMD139
|
139
|
300
|
NC38
|
144.2—153.7
|
|
KMD152
|
152
|
300
|
NC38
|
124.3—127.3
|
FMD152
|
152
|
300
|
NC38
|
154.8—166.1
|
|
KMD203
|
203
|
300
|
6 5/8″REG
|
144.2—153.7
|
FMD203
|
203
|
300
|
6 5/8″REG
|
216.8—228.7
|