Multi-stage Hole opener

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Description

Introduction
Multi-stage Hole opener is a processing fixed diameter concentric PDC hole opener designed for fast, smooth and durable concentric hole opening in a wide variety of hole diameters, formations and application conditions.The procedure are conjunctive to work in order to provide smooth reliable performance on either rotary or rotary steerable assemblies, for both vertical and directional applications.

Features
- Straightforward single-body FEA-modeled tool design.
- Application-specific Trident PDC cutters.
- Increase working area for higher cutter count and density.
- Optimize gauge design for directional responsiveness.
- Integral stabilization, centralization and hole condition.
- Integrate hydraulics for improved hole cleaning.

Benefits
- High quality hole opening at an aggressive ROP.
- Improving bit stability while drilling ahead.
- Suitable for both conventional steerable motor and RSS systems.
- Operational simplicity and reliability with no moving parts.
- Back ream through tight spots, ledges and doglegs.
- Configurable with roller cone, PDC or bull nose.
- Applicable in a wide range of drill string or BHA configurations.

Specifications

Type	Hole open dia.(in)	Qty of cutter	Min. pilot hole(in)	Fishing neck dia.(in)	I.D(in)	Top Conn. (pin)	Bottom Conn.(box)	Overall length(in)
SRMS 311	12 1/4	3	8 1/2	8	1 1/2	6 5/8REG	6 5/8REG	55
SRMS 406	16	3	10	9 1/2	2 1/4	7 5/8REG	7 5/8REG	59
SRMS 444	17 1/2	3	10	9 1/2	2 1/4	7 5/8REG	7 5/8REG	59
SRMS 559	22	3	12 3/4	9 1/2	2 1/3	7 5/8REG	7 5/8REG	69
SRMS 584	23	3	12 3/4	8	3	6 5/8REG	6 5/8REG	69
SRMS 610	24	3	14	10	3	7 5/8REG	7 5/8REG	69
SRMS 660	26	3	17 1/2	10	3	7 5/8REG	7 5/8REG	69
SRMS 4-914	36	4	26	10	3 1/2	7 5/8REG	7 5/8REG	87