Measuring and testing – Borehole or drilling – Fluid flow measuring or fluid analysis
Reexamination Certificate
2005-01-25
2005-01-25
Noland, Thomas P. (Department: 2856)
Measuring and testing
Borehole or drilling
Fluid flow measuring or fluid analysis
C073S863210, C073S863530, C073S863560, C073S864330, C175S020000
Reexamination Certificate
active
06845657
ABSTRACT:
A sample collection device for collecting a sample of drill cuttings from a hole being drilled as the hole is being drilled includes a stem collector surrounding the drill pipe. Pressurized air is injected through the drill pipe into the hole being drilled. The air forms a stream of air-entrained drill cuttings traveling up the drill hole during drilling. This stream of air-entrained drill cuttings is directed by the stem collector into a conduit which directs the stream of cuttings to a sampling device. The sampling device samples the stream of cuttings and creates a stream of sample cuttings which is directed to a diffuser which separates the sample cuttings from the air stream. The sample cuttings are collected in a sample container or in a sample collector from which they are transferred to a sample container or bag. The stem collector seals against the ground surrounding the hole being drilled to direct substantially all drill cuttings from the hole to the sampling device, thus substantially eliminating loss of fines prior to sampling, and the sampler is designed to collect a substantially representative sample from the cuttings stream, again substantially without loss of fines and in a device which can be mounted under the drill deck of a drilling rig.
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Derwent-ACGNS, 1998-521701 abstract of ZA 9711151 A, Inventor clur “Apparatus for sampling drill cuttings from drill hole in flow of air separates drill cuttings from air, directs some separated drill cuttings to collection point, samples operates automatically in response to depth of drill . . . ”, Aug. 1998.*
Derwent-ACC-No: 2002-529438 abstract of AU 200235593 A, inv. Clur “Automatic drill cuttings sampling apparatus of cuttings entrained in flushing air flowing from drill hole for determination of rock structure and are grade”, Jun. 2002.*
http://www.washingtonrotating.com/products.html, download Washington Rotating Control Heads, Inc.—Product Index, 1 page, May 22, 2003.*
http://www.Washingtonrotating.com/divestech.html, downloaded “The Divertech Pheumatic Diverter System” by Washington Rotating Control Heads, Inc. 4 pages, May 22, 2003.*
Harrison Cooper and Stephen Pack, “Sampling Error in Blast Hole Drilling and What Can Be Done To Improve Sample Quality,” Proceedings of Sampling and Testing Symposium, Metallurgical Society and Society of Economic Geologists, San Diego Annual Meeting Mar. 1999.
Harrison R. Cooper Systems, Inc.
Mallinckrodt & Mallinckrodt
Noland Thomas P.
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