| Customization: | Available |
|---|---|
| After-sales Service: | 2 Year |
| Warranty: | 2 Year |
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The Drilling Roller Reamers are employed in boring operations for the oil & gas industry. The main function of roller reamers cut earth formations to enlarge the borehole to the desirable size during well drilling operation, which may be the original size of the drill bit in the case where the drill bit wears to be under-gauged. However, even for new drill bits, roller reamers are employed to cut formations because the bit does not always drill a true bore hole and because of slight lateral shifting which is inherent in the drilling operation, which shifting leaves ledges and other distortions. Additionally, the second function of a roller reamer is to keep the drill stem in the center of the hole at the specific position of placement of the roller-reamer. In providing such a function, a reamer is often referred to as a stabilizer. Maintaining the drill stem centered has many beneficial effects, its primary one being minimizing unintentional hole-angle directional drilling.
Popular hole sizes for well bores range from 5" to 26" in diameter. Size of circulation passage through the center of the body of the reamer typically range from 1 1/2" to 3 1/4" in diameter. The body size on the necks beyond the area where the rollers are mounted typically range from 4 1/8" to 11" in diameter. This latter size will normally be the same size as the drill collar. Body links normally range from 4' to 8'.
KY type hydraulic Hole Reamer is a new type of hydraulic variable diameter hole opener for drilling or workover operations. It is operated by controlling the mud pump switch at the wellhead to adjust the hydraulic pressure drop in the drill string and realize the opening and withdrawal of the blade. In other words, when the pump is opened, the pump pressure is used to push the piston to overcome the spring thrust upward and drive the blade to slide upward and open in the chute of the housing. When the pump is stopped or the drill tool is lifted up, under the action of spring thrust and wall friction, the blade of the tool moves down in the chute of the housing and withdraw to achieve the purpose of diameter change and reaming, so as to prevent the resistance or stuck when pulling out or tripping in. It has the advantages of reasonable structure, good wear resistance, adjustable reaming size, and can be used for hole enlargement, especially while drilling, realizing the process of "drilling and hole opening in one trip".
Features:
1 ,Designed with a pressure compensated bullet seal and bearing assembly, the VSP torque-reduction sealed-bearing roller reamer reduces the downhole torque typically experienced using fixed-blade stabilizers. Torque reduction enables a more stable drilling environment, enabling extended runs in complex extended-reach wellbore geometries. Reducing downhole torque also improves weight transfer to the bit and minimizes stick/slip so that more energy is available at the bit to improve ROP and extend the operational life of the drill bit and MWD and LWD tools.
2, A wedge-style cutter retention system prevents lost cutter incidents, and a durable sealed-bearing assembly ensures high loads, temperatures, and rotary speeds to extend bearing life.
| Specifications | ||||
| Hole size, in | 8 1/2 | 8 3/4 | 12 1/4 | 17 1/2 |
| Tool length, in | 87 | 87 | 111 | 116 |
| Max. body diameter, in | 7 24/25 | 7 24/25 | 11 71/100 | 15 1/2 |
| Fishing neck diameter, in | 6 3/4 | 6 3/4 | 8 1/4 | 9 1/2 |
| Fishing neck length, in | 28 | 28 | 39 | 39 |
| Bore diameter, in | 2 1/4 | 2 1/4 | 3 | 3 |
| Annular flow area, in2 | 9.9 | 13.29 | 22.26 | 82.5 |
| Max. recommended speed, rpm | 150 | 150 | 150 | 150 |
| Max. temperature, degF | 300 | 300 | 300 | 300 |
| Body weight, lbm | 782 | 782 | 1,236 | 2,658 |
| Recommended max. cutter revolutions, millions | 10 | 10 | 10 | 10 |
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