|
|
|
|
|
|
|
|
|
Casing drive shoe
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
|
Casing shoe, английский
- Set diameter. the inside and/or outside diameter of a bit measured from the exposed tips of diamonds or other cutting media inset in the wall portions of the bit crown. set i.d. =set inside diameter, q.v. 79
- A steel sleeve threaded to fit and be coupled to the bottom end of diamond-drill casing as a cutting head and protector when the casing is driven through overburden. the inside diameter of a specific letter-name-range casing shoe (whether plain or inset with diamonds or other cutting media) is always large enough to permit other downhole drill fittings having the same letter-name-range designation to be run inside and through the casing shoe. when a casing shoe is set with diamonds or other cutting media it is called a set casing shoe, which should not be confused with casing bit. also called casing drive shoe. compare oasing bit, set casing shoe.
|
|
Casing shoe, английский
- Set diameter. the inside and/or outside diameter of a bit measured from the exposed tips of diamonds or other cutting media inset in the wall portions of the bit crown. set i.d. =set inside diameter, q.v. 79
- A steel sleeve threaded to fit and be coupled to the bottom end of diamond-drill casing as a cutting head and protector when the casing is driven through overburden. the inside diameter of a specific letter-name-range casing shoe (whether plain or inset with diamonds or other cutting media) is always large enough to permit other downhole drill fittings having the same letter-name-range designation to be run inside and through the casing shoe. when a casing shoe is set with diamonds or other cutting media it is called a set casing shoe, which should not be confused with casing bit. also called casing drive shoe. compare oasing bit, set casing shoe.
Black diamond, английский
|
|
|
|
|
|
|
