Impregnated Bits

impregnated bit

Overview

Decades of development have brought the impregnated bit to the dominant position it holds today as the first choice for coring most formations. Where the natural or polycrystalline alternatives use a single layer of relatively large cutting elements which negatively influence the behaviour of the tool as they wear down, the much smaller crystals of synthetic diamond randomly distributed throughout the impregnated matrix provide an unchanging response throughout the life of the bit. It is the complex relationship of diamond crystal and matrix metallurgy that provides the range of properties for which the impregnated bit has become known.

By considering the drillability of the rock rather than concentrating only on hardness, we have judged the combined effects of abrasiveness, friability and hardness to develop a series of five products to meet the challenge of any formation.

Pilot offers three standard impregnated crown profiles which will cover any commonly found ground condition. All share a face design that has been developed to provide reinforcement where it is most needed, while minimizing the risk of unwanted deviation.

Available In All Standard Sizes

Series

Pilot Impregnated Series Range

Pilot has listened to the concerns of the professional driller, who faces a bewildering array of products from which to try to make the correct choice. By its very nature, exploration takes on the unknown, so Pilot has eliminated the need to try to pick the right specialized product for a formation that has yet to be drilled. Instead, by giving careful thought to the metallurgical design, each member of a small group of matrices can perform well in a broad variety of conditions.

By considering the drillability of the rock rather than concentrating only on hardness, we have judged the combined effects of abrasiveness, friability and hardness to develop a series of five products to meet the challenge of any formation.

Selection criteria

Series
100

Designed for the most broken and abrasive formations, where rock hardness is the secondary consideration. The product is protected from attack in the gauge area and has a combination of matrix metallurgy and diamond selection that provides productivity while resisting premature wear from the formation. This series would be the impregnated choice to consider for the replacement of a surface set product.

Series
200

This series is for formations of medium abrasiveness and hardness, as in many sedimentary rocks and overburden conditions. Coarse-grained and fairly broken formations are the usual areas of application for this general purpose matrix.

Series
300

A productive bit in medium to medium-hard formations, with moderate abrasion. The matrix is designed to provide sustained performance in most igneous rock formations and is a good starting point for those cases where the rock characteristics are unknown.

Series
400

Finer grained rocks which offer little abrasive assistance to penetration need a freer-cutting matrix. This series is the likely choice for the harder igneous and metamorphic formations, where there may still be some broken areas to pass through. Productivity is assured with this smooth-cutting matrix.

Series
500

The least drillable, least abrasive and often hardest rocks present the greatest challenge to an impregnated bit because there is no natural mechanism for the matrix to erode, maintaining exposure of fresh diamond cutting surfaces . Series 500 is developed to address this hurdle, allowing fresh diamonds to be presented without constant intervention from the driller.


Referring to the table above, select the matrix that most closely represents the expected type of formation. If the standard crown tends to polish or cut too slowly with the available bit weight, consider the Turbo option, or the next higher matrix in the scale. If the bit wears too quickly, use the next lower matrix in the scale.

Crown Profiles

Standard crown

The waterway design and number of segments on the standard profile have been selected to provide a robust yet productive tool which can take on variable formations without seriously affecting performance. It is the default choice when facing the unexpected.

Turbo crown

The Pilot Turbo crown has been developed by paying close attention to the hydraulic effects that take place around the water courses, especially at the higher peripheral speeds that can be expected when the user seeks maximum penetration rate. The result is a tool that stays effectively flushed and cooled, even when driven beyond the normally accepted parameters for wireline bits. Productivity can only be truly maximized when the simple effect of pushing up the penetration rate is balanced by efficient flushing to prevent uneven wear and premature failure.

Face Discharge crown

For use in unconsolidated formations, where there is a chance that fluid can be lost in the formation without performing vital flushing, it is usual to select a face discharge bit. Pilot has taken a different approach from conventional face discharge design, optimizing the chance of adequately clearing the cuttings while minimizing the chance of washing away the more fragile core.

Sizes

Core Bit Gauge Diameters

Outside Diameter Outside Diameter Gauge Inside Diameter Inside Diameter Gauge
Size in. mm. in. max/min mm. max/min in. mm. in. max/min mm. max/min
XRT 1.160 29.46 1.165
1.155
29.59
29.34
0.735 18.67 0.740
0.730
18.80
18.54
XRP 1.288 32.72 1.290
1.285
32.77
32.64
0.878 22.3 0.880
0.870
22.35
22.10
EXT 1.470 37.34 1.475
1.465
37.47
37.21
0.905 22.99 0.910
0.900
23.11
22.86
IEW/ IEW-S 1.470 37.34 1.475
1.465
37.47
37.21
0.995 25.27 1.000
0.990
25.40
25.15
TT-46 /LTK-46 1.815 46.10 1.820
1.810
46.23
45.97
1.385 35.18 1.390
1.380
35.31
35.05
A-W/L 1.875 47.63 1.880
1.870
47.75
47.50
1.062 26.97 1.067
1.057
27.10
26.85
A-TK 1.875 47.63 1.880
1.870
47.75
47.50
1.202 30.53 1.207
1.197
30.66
30.40
AXT 1.875 47.63 1.880
1.870
47.75
47.50
1.281 32.54 1.286
1.276
32.66
32.41
AW-34 1.882 47.80 1.887
1.877
47.93
47.68
1.315 33.40 1.320
1.310
33.53
33.27
JKT48/LTK48 1.882 47.80 1.887
1.877
47.93
47.68
1.385 35.18 1.390
1.380
35.31
35.05
B3-W/L 2.345 59.56 2.350
2.340
59.69
59.44
1.320 33.53 1.325
1.315
33.66
33.40
B-W/L 2.345 59.56 2.350
2.340
59.69
59.44
1.433 36.40 1.438
1.428
36.53
36.27
B-TK 2.345 59.56 2.350
2.340
59.69
59.44
1.601 40.67 1.606
1.596
40.79
40.54
BTW 2.345 59.56 2.350
2.340
59.69
59.44
1.670 42.42 1.675
1.665
42.55
42.29
BX 2.345 59.56 2.350
2.340
59.69
59.44
1.655 42.04 1.660
1.650
42.16
41.91
BW-44 2.360 59.94 2.365
2.355
60.07
59.82
1.755 44.58 1.760
1.750
44.70
44.45
N3-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.775 45.09 1.780
1.770
45.21
44.96
N-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.875 47.63 1.880
1.870
47.75
47.50
N2-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.995 50.67 2.000
1.990
50.80
50.55
NTW 2.970 75.44 2.975
2.965
75.57
75.31
2.215 56.26 2.220
2.210
56.39
56.13
NX 2.965 75.31 2.970
2.960
75.44
75.18
2.155 54.74 2.160
2.150
54.86
54.61
H3-W/L 3.763 95.58 3.770
2.756
95.76
95.40
2.406 61.11 2.411
2.401
61.24
60.99
H-W/L 3.763 95.58 3.770
2.756
95.76
95.40
2.500 63.50 2.505
2.495
63.63
63.37
HX 3.890 98.81 3.895
2.885
98.93
98.68
3.000 76.20 3.005
2.995
76.33
76.07
P-W/L 4.805 122.05 4.815
4.795
122.30
121.79
3.345 84.96 3.350
3.340
85.09
84.84
P3-W/L 4.805 122.05 4.815
4.795
122.30
121.79
3.270 83.06 3.275
3.265
83.19
82.93

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Contact a Sales Rep

Can't find what your looking for or need something custom? Pilot's technicians have seen most problems before and can either recall a similar case along with its custom solution or even design a new tool in cooperation with the driller.

  • Phone: 1-705-497-3715
  • Toll Free: 1-877-480-7415
  • Fax: 1-705-497-3714
  • Email: [email protected]

Overview

Details

Decades of development have brought the impregnated bit to the dominant position it holds today as the first choice for coring most formations. Where the natural or polycrystalline alternatives use a single layer of relatively large cutting elements which negatively influence the behaviour of the tool as they wear down, the much smaller crystals of synthetic diamond randomly distributed throughout the impregnated matrix provide an unchanging response throughout the life of the bit. It is the complex relationship of diamond crystal and matrix metallurgy that provides the range of properties for which the impregnated bit has become known.

By considering the drillability of the rock rather than concentrating only on hardness, we have judged the combined effects of abrasiveness, friability and hardness to develop a series of five products to meet the challenge of any formation.

Pilot offers three standard impregnated crown profiles which will cover any commonly found ground condition. All share a face design that has been developed to provide reinforcement where it is most needed, while minimizing the risk of unwanted deviation.

Available In All Standard Sizes

Series

Details

Pilot Impregnated Series Range

Pilot has listened to the concerns of the professional driller, who faces a bewildering array of products from which to try to make the correct choice. By its very nature, exploration takes on the unknown, so Pilot has eliminated the need to try to pick the right specialized product for a formation that has yet to be drilled. Instead, by giving careful thought to the metallurgical design, each member of a small group of matrices can perform well in a broad variety of conditions.

By considering the drillability of the rock rather than concentrating only on hardness, we have judged the combined effects of abrasiveness, friability and hardness to develop a series of five products to meet the challenge of any formation.

Selection criteria

Series
100

Designed for the most broken and abrasive formations, where rock hardness is the secondary consideration. The product is protected from attack in the gauge area and has a combination of matrix metallurgy and diamond selection that provides productivity while resisting premature wear from the formation. This series would be the impregnated choice to consider for the replacement of a surface set product.

Series
200

This series is for formations of medium abrasiveness and hardness, as in many sedimentary rocks and overburden conditions. Coarse-grained and fairly broken formations are the usual areas of application for this general purpose matrix.

Series
300

A productive bit in medium to medium-hard formations, with moderate abrasion. The matrix is designed to provide sustained performance in most igneous rock formations and is a good starting point for those cases where the rock characteristics are unknown.

Series
400

Finer grained rocks which offer little abrasive assistance to penetration need a freer-cutting matrix. This series is the likely choice for the harder igneous and metamorphic formations, where there may still be some broken areas to pass through. Productivity is assured with this smooth-cutting matrix.

Series
500

The least drillable, least abrasive and often hardest rocks present the greatest challenge to an impregnated bit because there is no natural mechanism for the matrix to erode, maintaining exposure of fresh diamond cutting surfaces . Series 500 is developed to address this hurdle, allowing fresh diamonds to be presented without constant intervention from the driller.


Referring to the table above, select the matrix that most closely represents the expected type of formation. If the standard crown tends to polish or cut too slowly with the available bit weight, consider the Turbo option, or the next higher matrix in the scale. If the bit wears too quickly, use the next lower matrix in the scale.

Crown Profiles

Details

Standard crown

The waterway design and number of segments on the standard profile have been selected to provide a robust yet productive tool which can take on variable formations without seriously affecting performance. It is the default choice when facing the unexpected.

Turbo crown

The Pilot Turbo crown has been developed by paying close attention to the hydraulic effects that take place around the water courses, especially at the higher peripheral speeds that can be expected when the user seeks maximum penetration rate. The result is a tool that stays effectively flushed and cooled, even when driven beyond the normally accepted parameters for wireline bits. Productivity can only be truly maximized when the simple effect of pushing up the penetration rate is balanced by efficient flushing to prevent uneven wear and premature failure.

Face Discharge crown

For use in unconsolidated formations, where there is a chance that fluid can be lost in the formation without performing vital flushing, it is usual to select a face discharge bit. Pilot has taken a different approach from conventional face discharge design, optimizing the chance of adequately clearing the cuttings while minimizing the chance of washing away the more fragile core.

Size Chart

Details

Core Bit Gauge Diameters

Outside Diameter Outside Diameter Gauge Inside Diameter Inside Diameter Gauge
Size in. mm. in. max/min mm. max/min in. mm. in. max/min mm. max/min
XRT 1.160 29.46 1.165
1.155
29.59
29.34
0.735 18.67 0.740
0.730
18.80
18.54
XRP 1.288 32.72 1.290
1.285
32.77
32.64
0.878 22.3 0.880
0.870
22.35
22.10
EXT 1.470 37.34 1.475
1.465
37.47
37.21
0.905 22.99 0.910
0.900
23.11
22.86
IEW/ IEW-S 1.470 37.34 1.475
1.465
37.47
37.21
0.995 25.27 1.000
0.990
25.40
25.15
TT-46 /LTK-46 1.815 46.10 1.820
1.810
46.23
45.97
1.385 35.18 1.390
1.380
35.31
35.05
A-W/L 1.875 47.63 1.880
1.870
47.75
47.50
1.062 26.97 1.067
1.057
27.10
26.85
A-TK 1.875 47.63 1.880
1.870
47.75
47.50
1.202 30.53 1.207
1.197
30.66
30.40
AXT 1.875 47.63 1.880
1.870
47.75
47.50
1.281 32.54 1.286
1.276
32.66
32.41
AW-34 1.882 47.80 1.887
1.877
47.93
47.68
1.315 33.40 1.320
1.310
33.53
33.27
JKT48/LTK48 1.882 47.80 1.887
1.877
47.93
47.68
1.385 35.18 1.390
1.380
35.31
35.05
B3-W/L 2.345 59.56 2.350
2.340
59.69
59.44
1.320 33.53 1.325
1.315
33.66
33.40
B-W/L 2.345 59.56 2.350
2.340
59.69
59.44
1.433 36.40 1.438
1.428
36.53
36.27
B-TK 2.345 59.56 2.350
2.340
59.69
59.44
1.601 40.67 1.606
1.596
40.79
40.54
BTW 2.345 59.56 2.350
2.340
59.69
59.44
1.670 42.42 1.675
1.665
42.55
42.29
BX 2.345 59.56 2.350
2.340
59.69
59.44
1.655 42.04 1.660
1.650
42.16
41.91
BW-44 2.360 59.94 2.365
2.355
60.07
59.82
1.755 44.58 1.760
1.750
44.70
44.45
N3-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.775 45.09 1.780
1.770
45.21
44.96
N-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.875 47.63 1.880
1.870
47.75
47.50
N2-W/L 2.965 75.31 2.970
2.960
75.44
75.18
1.995 50.67 2.000
1.990
50.80
50.55
NTW 2.970 75.44 2.975
2.965
75.57
75.31
2.215 56.26 2.220
2.210
56.39
56.13
NX 2.965 75.31 2.970
2.960
75.44
75.18
2.155 54.74 2.160
2.150
54.86
54.61
H3-W/L 3.763 95.58 3.770
2.756
95.76
95.40
2.406 61.11 2.411
2.401
61.24
60.99
H-W/L 3.763 95.58 3.770
2.756
95.76
95.40
2.500 63.50 2.505
2.495
63.63
63.37
HX 3.890 98.81 3.895
2.885
98.93
98.68
3.000 76.20 3.005
2.995
76.33
76.07
P-W/L 4.805 122.05 4.815
4.795
122.30
121.79
3.345 84.96 3.350
3.340
85.09
84.84
P3-W/L 4.805 122.05 4.815
4.795
122.30
121.79
3.270 83.06 3.275
3.265
83.19
82.93

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