Hole Openers, buy 36'' rock reamer bit / HDD pilot bit for trenchless / trenchless rock reamer on China Suppliers Mobile

Product Details

36'' rock reamer bit / HDD pilot bit for trenchless / trenchless rock reamer

There are three stages:

1>the first stage is to drill a small diameter pilot hole.

2>The second stage is enlarge the hole with a larger diameter cutting tool called an HDD Reamer,

Rock Reamer or Hole Opener.

3>The third stage is inserting the casing pipe or other product into the enlarged hole.

Product Description

K Hard plastic formation cutting structure

Unique designing parameters and wider insert crest enlarge rock-breaking volume on bottom hole and increase bottom hole coverage. At the same time, shear sliding distance of inserts at bottom hole is made larger and ROP of the bit in hard plastic formation is increased.

X Convex crested wedge compact

Convex crested wedge compact is with the features of high effectively cutting ability and strong anti-breaking ability, which can increase ROP and improve service lite of bit effectively it’s suitable for formations from

medium soft to medium hard.

Y Conical spherical compact

Main cutters of bit are conical spherical compacts, which are suitable for drilling in hard brittle formations.

Bit Size		Bit Type
in	mm	Bit Type
31/2	88.9	HR527
45/8	117.5	HR126	HR517
43/4	120.7	HR116
57/8	149.2	HR216	HR537	HR547	HR637
6	152.4	HR117	HR216	HR246	HR517	HR547
61/4	158.8	HR127	HR247	HR517	HR527	HR547	HR637
61/2	165.1	HR127	HR217	HR517	HR537
63/4	171.5	HR116	HR447	HR537
71/2	190.5	HR127	HR217	HR517	HR517	HR527	HR527	HR617
77/8	200	HR177	HR437	HR517	HR527	HR537	HR547	HR547	HR617	HR627	HR637
83/8	212.7	HR217	HR527	HR547
81/2	215.9	HR117	HR127	HR137	HR217	HR247	HR437	HR447	HR517	HR527	HR537
81/2	215.9	HE547	HR617	HR627	HR637
83/4	222.3	HE116	HR437	HR517	HR537	HR627
91/2	241.3	HR117	HR127	HR417	HR437	HR517	HR527	HR537	HR547	HR617
95/8	244.5	HR117	HR127	HR137	HR217	HR437	HR517	HR527
97/8	250.8	HR117	HR127	HR137	HR217	HR417	HR437	HR517	HR527
105/8	269.9	HR127	HR217	HR437	HR517	HR547
115/8	295.3	HR117	HR127	HR137	HR217	HR147	HR517	HR537	HR547
121/4	311.2	HR117	HR127	HR137	HR417	HR437	HR517	HR527	HR537
121/4	311.2	HR547	HR617	HR627	HR637
135/8	346.1	HR437	HR517	HR537
133/4	349.3	HR437	HR517	HR537
143/4	374.7	HR117	HR127	HR137	HR517	HR527
151/2	393.7	HR127	HR217	HR517	HR527	HR537	HR547
16	406.4	HR117	HR127	HR127	HR517	HR527	HR537	HR547
171/2	444.5	HR117	HR127	HR137	HR437	HR517	HR527	HR537	HR547
18	457.2	HR547

IADC	WOB	RPM	Applicable Formations
	(KN/MM)	(r/min)
	(Bit Dia)
116 117	0.35~0.8	150~80	Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk etc.

126 127	0.35~0.9	150~70	Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,ft limestone,ect.

136 137	0.35~1.0	120~60	Soft to mesium soft formations with low compressive strength and high drillability.such as medium soft shale,hard gypsum,medium soft dium soft sandstone soft formation with harder nterbeds,ect.

216 217	0.4~1.0	100~60	Medium hard formations with high compressive strength,such as medium soft shale,hard gypsum,medium soft limestone,medium soft sandstone,soft formation with harder interbeds ect.

246 247	0.4~1.0	80~50	Medium hard formations with high compressive strength,such as abrasive shale.limestone,sandstone,dolomite,hard gypsum,marble,ect.

417 437	0.35~0.9	150~70	Very soft formations with low compressive strength and high drillability,such as clay,mudston,chalk,gypsum,salt,soft shale,soft limestone,etc.
447
517 527	0.35~1.0	140~60	Soft formations with low compressive strength and high drillability,such as mudstore,gypsum,salt,soft ft limestone,ect.

537 547	0.45~1.0	120~50	Soft to medium formations with low compressive strength,such as medium soft shale,medium soft limestone,medium soft sandstone,medium formation with harder and abrasiver interbeds,ect.

617 627	0.45~1.1	90~50	Medium hard formations with high compressive strength,such as hard shale,limestone,sandstone,dolomite,ect.

637	0.5~1.2	80~40	Hard formations with high compressive strength,such as sandstone,limestone,dolomite,hard gypsum,marble,ect.