DRILLWELL Core Barrel Drill-Line Inner Tube Plastic Liner ( Core Liner ) has been developed to assist and improve the recovery of Cores from soft, friable and broken formations.

It is a simple design and low cost but very effective method of reducing drilling costs and improving drilling efficiency.

Drillwell Ltd - Core Barrel Drill-Line Inner Tube Plastic Liner ( Core Liner )

We can design and manufacture a wide range of Core Barrel Drill-Line Inner Tube Plastic Liners.  If you require a bespoke design then we can supply them on request, please email or contact us for further information.

All our Core Barrel Drill-Line Inner Tube Plastic Liner products are designed and manufactured in house by our fully qualified engineers allowing us to provide a custom service and a fast turn around.

Core Barrel Drill-Line Inner Tube Plastic Liner - Drillwell Ltd

Key

1.   Core Bit (Underset Bore)
2.   Reamer Shell
3.   Corelifter (Reduced Bore)
4.   Corelifter Case
5.   Outer Tube
6.   Inner Tube
7.   Core-line Plastic Tuber

Core Liner Plastic Linear - Drillwell LtdThe Drillwell Ltd Core Barrel Drill-Line Inner Tube Plastic Liner consists of a clear, thin-wall extruded rigid plastic tube of which by accurate manufacturing processes is manufactured to close tolerances on both the outside and the inside diameters.

Clearance between the O.D. of the “Drill-Line” and I.D. of the Core Barrel inner tube is there fore carefully controlled and allows easy fitting of the Plastic Tube into the inner tube in the field.

When the clear plastic material is used (inserted) it will not contaminate the Core sample during drilling and encapsulation. The material does not absorb water and will not swell or change shape.

Advantages Of The Core Barrel Drill-Line Inner Tube Plastic Liner

Core Liner Plastic - Drillwell LtdThe Drillwell Ltd Core Barrel Drill-Line Inner Tube Plastic Liner consists of a clear, thin-wall extruded rigid plastic tube of which by accurate manufacturing processes is manufactured to close tolerances on both the outside and the inside diameters.

Clearance between the O.D. of the “Drill-Line” and I.D. of the Core Barrel inner tube is there fore carefully controlled and allows easy fitting of the Plastic Tube into the inner tube in the field.

When the clear plastic material is used (inserted) it will not contaminate the Core sample during drilling and encapsulation. The material does not absorb water and will not swell or change shape.

Further advantages of the Core Barrel Drill-Line Inner Tube Plastic Clear Liner

  • Core Liner Plastic - Drillwell LtdLow coefficient of friction of the plastic material improves and assists the moment of the core into the tube.
  • Once the coring run has been completed the “Drill-Line” clear plastic tube can be  withdrawn very easily from the inner tube with the core sample intact inside.
  • The recovered core sample may be encapsulated within the plastic liner by the fitting of plastic end caps to allow easy and safe transported to the laboratory etc.
  • “Drill-Line” is suitable for use in both single or double tube Core Barrels.
    Should the Core contained in the plastic tube require close inspection or sampling on site the plastic liner maybe easily be cut with a sharp knife at the appropriate place.

It is necessary to use a Core Bit with a reduced Set Bore and a reduced Bore Corelifter when using the “Drill-Line” system.

Core Barrels To ISO3551-1 (BS 4019 Pt.3)

Core Barrel Designation

“Drill-Line”
Tube I.D

Core Bit
Set I.D.

NWG

54.5 mm

51.0 mm

NWM

54.5 mm

51.0 mm

NWG

74.4 mm

72.0 mm

HWF

74.4 mm

72.0 mm

PWF

90.3 mm

87.0 mm

SWF

110.5 mm

107.0 mm

UWF

134.4 mm

131.5 mm

ZWF

153.4 mm

150.0 mm

Core Barrels - Metric - T6 Series

Core Barrel Designation

“Drill-Line”
Tube I.D

Core Bit
Set I.D.

T6-86

66.25 mm

64.0 mm

T6-101

78.5 mm

76.0 mm

T6-116

92.5 mm

90.0 mm

T6-131

106.5 mm

103.5 mm

T6-146

121.0 mm

118.0 mm

T6-H

78.5 mm

76.0 mm

T6-S

 

 

Core Barrels - Air Flush

Core Barrel Designation

“Drill-Line”
Tube I.D

Core Bit
Set I.D.

HWAF

70.0 mm

68.0 mm

412F

76.8 mm

73.0 mm

Core Barrels - Metric - B Series

Core Barrel Designation

“Drill-Line”
Tube I.D

Core Bit
Set I.D.

B-86

74.25 mm

72.0 mm

B-101

83.3 mm

84.0 mm

B-116

100.3 mm

99.0 mm

B-131

114.3 mm

113.0 mm

B-146

129.3 mm

128.0 mm

Core Barrels - Metric - ISO / BSI Hole Size

Core Barrel Designation

“Drill-Line”
Tube I.D

Core Bit
Set I.D.

TNW

59.9 mm

58.0 mm

TBW

 

 

Core Barrels - WireLine

Core Barrel Designation

“Drill-Line”
Tube I.D

Core Bit
Set I.D.

NQ.

47.0 mm

45.1 mm

HQ.

63.7 mm

61.1 mm

PQ.

86.0 mm

83.1 mm

 

 

 

Geobore P

86.0 mm

83.0 mm

Geobore S

106.5 mm

102.0 mm

 

 

 

NDBGM

54.5 mm

51.0 mm

Core Barrels - T2 Series To ISO 3552-1

Core Barrel Designation

“Drill-Line”
Tube I.D

Core Bit
Set I.D.

T2-76

60.0 mm

58.0 mm

T2-86

70.0 mm

68.0 mm

T2-101

82.0 mm

80 mm

Liners (White Plastic) are also available
for U4 sampling Tubes

DRILLWELL LTD

Comprehensive Drill Design and Supply Company

Drillwell Ltd
Unit 1-2, Rotherham Close
Killamarsh, Sheffield, S21 2JU
Tel No: 0114 2487333

Comprehensive Drill Design and Supply Company  - Drillwell Ltd
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