Measuring and testing – Hardness – By penetrator or indentor
Patent
1992-03-05
1994-08-23
Williams, Hezron E.
Measuring and testing
Hardness
By penetrator or indentor
7386445, 73151, G01N 300, E21B 4902
Patent
active
053396790
ABSTRACT:
The invention comprises an improved self-contained, environmentally isolated, multi-parametric measuring apparatus and method for sampling and determining the dynamic loading characteristics of a soil bed. The apparatus is specially adapted to withstand the extreme pressures of deep water applications. In operation, a drill string presses the apparatus of the invention into a soil bed at an uncontrolled rate resulting in a variable penetration rate. The apparatus has a self-contained data acquisition system that measures and records, as a function of time, the force exerted on the sampling apparatus and the depth of penetration as the drill string presses the sampling apparatus into the soil bed. Data is provided that enables the user to determine the static soil characteristics (e.g., shear strength and stress-strain characteristics) and the dynamic loading characteristics of the soil bed. The apparatus captures a sample of the soil for laboratory analysis. The data collected provides information on the quality of the sample and location of defects in the sample which would affect laboratory test results. The apparatus is self-contained and operates independently of surface telemetry. The method of the invention may be performed in less time than known systems and can be advantageously performed from a floating platform, because the apparatus of the invention is self-compensating and not adversely affected by variable sea states.
REFERENCES:
patent: 2701121 (1955-02-01), Bull
patent: 2833120 (1958-05-01), Barrett et al.
patent: 3163241 (1964-12-01), Daigle et al.
patent: 3481188 (1969-12-01), Mori
patent: 3500678 (1970-03-01), Van Romondt Vis
patent: 3875796 (1975-04-01), Gilliard
patent: 3916684 (1975-11-01), Rundell
patent: 4085509 (1978-04-01), Bell et al.
patent: 4400970 (1983-08-01), Ali
patent: 4419886 (1983-12-01), Peterson
patent: 4499955 (1985-02-01), Campbell et al.
patent: 4499956 (1985-02-01), Campbell et al.
patent: 4530236 (1985-06-01), van den Berg
patent: 4554819 (1985-11-01), Ali
patent: 4601354 (1986-07-01), Campbell et al.
patent: 4638872 (1987-01-01), Park et al.
patent: 4770030 (1988-09-01), Smith
patent: 5125266 (1992-06-01), Ingram et al.
patent: 5127261 (1992-07-01), Ingram et al.
M. J. Hvorselv, "Subsurface Exploration and Sampling of Soils for Civil Engineering Purposes", Report for American Society of Civil Engineers, pp. 100-123, (Nov. 1949).
McClelland Engineers brochure, "Stingray Cone Penetrometer System For Marine Grotechnical Investigations", May 1979.
Ingram Wayne B.
Porter Byron W.
Brock Michael
Fugro-McClelland Leasing, Inc.
Williams Hezron E.
LandOfFree
Self-contained apparatus and method for determining the static a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Self-contained apparatus and method for determining the static a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-contained apparatus and method for determining the static a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-494892