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Rigs & Accessories -----
Onshore Drilling Rig
Onshore workover Rig
Rotary Table
Swivel
Travelling Block and Hook
Drilling Steel Rope
Top Drive
Rig motor
Drilling Hose
Air Winch
Rig Roller Chain

Mud pump & Fluid end parts
Triplex Single Acting Mud pump
Fluid end parts

Handling tools -----
Rotary Slips
Drill Collar Slips
Casing slips
Safety Clamp
BNC Type elevator
SSC Type Elevator
Slip type Elevator
Casing elevator spider
Sucker Rod elevator
Single Joint Elevator
Roller Kelly bushing
Master Casing Bushing
Casing Bushing
Manual tong
Power tong
Hydraulic cathead
Air Safety Spinning Wrench
Kelly Spinner

Solid control equipment ----
Solid Control Equipment

BOP and Accessories -----
BOP & ACCUMULATOR

Drilling Strings -----
Kelly
H-W Drill pipe
Drill Collar
Stabilizer
X-over Subs
drilling jar
Hole opener
Under reamer
Down Hole motor
Drill pipe

Fishing Tools -----
Safety Joint
Overshot
Spear
Reverse Circulating Junk Basket
Casing Scraper

Drilling Instruments -----

Flow control products -----
Gate valve
Butterfly valve
SPM Plug valve

Wellhead & X-mass -----
Wellhead & X-mass tree





 
   Under Reamer

Under Reamer

Utilization

The rotary reamer is designed for every reaming operation but particularly for stabilization purposes when drilling in very abrasive formations. This is a versatile tool. It will fit hole sizes ranging from 4-5/8 " to 26 " . In addition, each body, by simple adjustment of blocks and proper selection of cutters, will suit a wide range of hole sizes.

Construction Features

Its body is made of modified alloy steel, fully heat treated to 285-341 Brinell hardness and 54J minimum impact strength. Connections are cold rolled, phosphatized, coated and equipped with protectors and are gagged to API Standards. Its body is inspected on an ultrasonic control unit over its full length and section. The original cutter and block assembly allows easy replacement of cutters by rig crews.

Cutters

Three different types (T, F and B) of cutters are offered.

Type T: Milled, machined with hardfaced sharp teeth for soft formations.

Type F: Milled, machined with hardfaced flat teeth, for medium hard formations.

Type B: Equipped with pressed-in tungsten carbide buttons, for hard formations

Hole Size (in)
Connection
HD (mm)
Overall Length (mm)
Fishing Neck
OD (mm)
D1 (mm)
L1(mm)
26
7 5/8 Reg.
660.4
3000
254
178
400
17 1/2
7 5/8 Reg.
444.6
2200
228
140
304
12 1/4
6 5/8 Reg
311.2
2000
228
100
300
9 5/8
5 1/2 FH
244.8
1800
178
71
300
8 1/2
4 1/2 Reg.
215.9
1730
165
71
200
8 3/8
4 1/2 Reg.
212.7
1600
165
71
200
8 1/8
4IF
209.00
1600
165
71
200
6 1/8
3 1/2IF
155.00
1470
140
51
200
6
3 1/2IF
152.00
1400
121
51
200
5 7/8
3 1/2IF
149.00
1470
121
51
200
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Contacts Us

Add: Room.1201 ,No.1 Building, Yingkou Roud, Yangpu District   Shanghai, China 200433


Tel:+86-21-5881-1945     


Fax: +86-21-5523-8689


Email:sales@mastpetroequip.com


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