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Oriented bent sub is a major power deflection tool having a fixed angle a deviated from low end thread of the bent sub to axiaal line of dril stem, the power drill tool under the application of oriented bent sub gives the bit a constant lateral force to ensure that the bit can cut on the well-wall laterally and further drill into a curved well trace.
Technical specification and parameter:
|
Type |
O.D.mm(in) |
Connection |
Bent angle a(degree) |
I.D. of oriented sleeve (mm) |
|
|
|
|
Box |
Pin |
|
|
|
DZT89 |
89(3 1/2) |
NC26 |
NC26 |
1.5 |
36 |
|
|
|
|
|
2 |
|
|
DZT140 |
140(5 1/2) |
NC38 |
NC38 |
03.5 |
36 |
|
DZT159 |
159(6 1/4) |
NC46 |
4 1/2 REG |
|
50 |
|
DZT165 |
165(6 1/2) |
NC50 |
NC50 |
|
50 |
|
DZT178 |
178(7) |
5 1/2 FH |
5 1/2 FH |
|
50 |
|
DZT203 |
203(8) |
6 5/8 REG |
6 5/8 REG |
|
50 |