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Help CenterAPI 7-1 Standard Downhole Oil Well Drilling Fiexed Diameter Hole Opener/SM MH XH Cutters Type Hole Opener AISI4145H in Oilfield
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API 7-1 Standard downhole oil well drilling fiexed diameter hole opener/SM MH XH cutters type hole opener AISI4145H in oilfield
1. The body of Fixed Diameter Hole Opener is made of tough heat treated alloy steel for maximum strength. Cutter arms, equipped with removable cutter, are hardfaced and welded on body. Cutters are available in three types. The hole openers have three or six jet tubes with replaceable nozzles, so that jet streams quickly clean the enlarged hole. Fixed Diameter Hole Opener is used for enlarging the surface hole which drilled by cone bit in advance, or connected above the cone bit. It applies to Onshore and offshore oilfield.
2. Cutters type:
"SM": Soft to medium formation;
"MH": Medium to hard formation;
''XH'': Hard formation.
Specifications - Fixed Diameter Hole Opener
|
Hole open diameter |
Qty of cutters |
Min.Pilot hole |
Fishing neck diameter |
I.D. |
Top connection(Pin) |
Bottom connection(Box) |
Overall Length |
12 1/4" |
3 |
8 1/2" |
8" |
1 1/2" |
6 5/8REG |
6 5/8REG |
55" |
16" |
3 |
10" |
9 1/2" |
2 1/4" |
7 5/8REG |
6 5/8REG |
59" |
17 1/2" |
3 |
10" |
9 1/2" |
2 1/4" |
7 5/8REG |
6 5/8REG |
59" |
22" |
3 |
12 3/4" |
9 1/2" |
2 1/3" |
7 5/8REG |
6 5/8REG |
69" |
23" |
3 |
12 3/4" |
8" |
3" |
7 5/8REG |
6 5/8REG |
69" |
24" |
3 |
14" |
10" |
3" |
7 5/8REG |
7 5/8REG |
69" |
26" |
3 |
17 1/2" |
10" |
3" |
7 5/8REG |
7 5/8REG |
69" |
36" |
4 |
26" |
10" |
3 1/2" |
7 5/8REG |
7 5/8REG |
87" |
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