Lake Sampling Tools

DOSECC’s 12th Annual Continental Scientific Drilling Workshop

2 - 5 June 2008

Snowbird, Utah

33rd International Geological Congress
6–14 August 2008
Oslo, Norway

IRIS Real-Time Earthquake Map

DOSECC has designed and built a suite of coring tools specifically for use in lake drilling. These tools have now also been used to collect core in shallow marine projects. These tools can be deployed by wireline and conveniently changed to accommodate changing lithologies. The tool set contains the following:

Shelby (Push) Tube
Hydraulic Piston Core (HPC)
Extended Shoe, Non-rotating
Extended Core Bit, Rotating (The Alien)
Diamond Core Bit (mining)
Non-Sampling Assembly

DOSECC Lake Coring System (DLS)

Hole diameter: 5.50 in. 139.7 mm.
Liner core (ODP): 2.612 in. 66 mm.
Liner core (Alien): 2.40 in. 61 mm.


	Outer Tube with Extended Core Bit, Rotating (The Alien)


	Bits (from Left to Right): The Alien, the outer barrel bit, and the non-sampling inner bit.


DOSECC Lake Coring System (DLS) Core Liner Specifications

ODP Style Liner for Push , HPC, Extended Nose tools.

Material:	Butyrate (576E)

	British (in.)
	Nominal Dimension	Maximum Specified Tolerance	Minimum Specified Tolerance
ID	2.612	2.617	2.6
OD	2.808	2.822	2.802
Wall	0.097	0.11	0.092
Length	130.875	130.938	130.812
Color	Clear with stripes

	Metric (mm)
	Nominal Dimension	Maximum Specified Tolerance	Minimum Specified Tolerance
ID	66.3448	66.4718	66.04
OD	71.3232	71.6788	71.1708
Wall	2.4638	2.794	2.3368
Length	3324.225	3325.8252	3322.6248
Color	Clear with stripes

Liner for Extended Rotating (Alien) tool.

Material:	Lexan

	British (in.)
	Nominal Dimension	Maximum Specified Tolerance	Minimum Specified Tolerance
ID	2.512	2.522	2.512
OD	2.603	2.613	2.603
Wall	0.0455	0.0505	0.0405
Length	120	12.01	120
Color	Clear

	Metric (mm)
	Nominal Dimension	Maximum Specified Tolerance	Minimum Specified Tolerance
ID	63.8048	64.0588	63.8048
OD	66.1162	66.3702	66.1162
Wall	1.1557	1.2827	1.0287
Length	3048	305.054	3048
Color	Clear




Non-Sampling Assembly (top) & Hydraulic Piston Core (HPC)



		Shelby (Push) Tube with Core Catcher

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