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1. (WO2001004462) ANTI-WOBBLING BAILER WITH HIGH SPEED INSERTION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2001/004462 International Application No.: PCT/US2000/008469
Publication Date: 18.01.2001 International Filing Date: 30.03.2000
Chapter 2 Demand Filed: 22.01.2001
IPC:
E21B 27/00 (2006.01) ,E21B 49/08 (2006.01) ,G01N 1/12 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
27
Containers for collecting or depositing substances in boreholes or wells, e.g. bailers for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
49
Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
08
Obtaining fluid samples or testing fluids, in boreholes or wells
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1
Sampling; Preparing specimens for investigation
02
Devices for withdrawing samples
10
in the liquid or fluent state
12
Dippers; Dredgers
Applicants: PRATT, David, W.[US/US]; US
Inventors: PRATT, David, W.; US
Agent: SMITH, Ronald, E.; Smith & Hopen, P.A. 15950 Bay Vista Drive Suite 220 Clearwater, FL 33760, US
Priority Data:
09/349,06808.07.1999US
Title (EN) ANTI-WOBBLING BAILER WITH HIGH SPEED INSERTION
(FR) CUILLER ANTI-ONDULATION AVEC INSERTION ULTRA-RAPIDE INSERTION
Abstract:
(EN) A bailer has two externally-mounted weights (20, 22). The first weight (20) is positioned at its uppermost end (16) and the second weight (22) is positioned at its lowermost end (18). The combination of weights increases the insertion rate of the bailer into a liquid so that the time elapsed for an insertion is reduced relative to the time required to insert unweighted bailers, top-weighted bailers, or bottom-weighted bailers. The weights also prevent wobble about the longitudinal axis of the bailer as it descends. In a second embodiment, a spacer member is secured to the leading end of the bailer to space the leading end away from a bottom of a well. In this way, sediment stirred by the impact of the bailer against the bottom of a well does not enter into the hollow interior of the bailer.
(FR) Cette invention concerne une cuiller dotée de deux poids extérieurs (20, 22). Le premier poids (20) est situé à l'extrémité la plus haute (16), le second (22) à l'extrémité la plus basse (18) de la cuiller. L'action combinée de ces deux poids à pour effet d'accélérer le taux d'insertion de la cuiller dans un liquide de sorte que la durée requise pour l'insertion est moindre que dans le cas de cuillers sans poids, de cuillers à poids supérieur ou de cuillers à poids inférieur. Par ailleurs, ces poids empêchent la cuiller d'onduler sur son axe longitudinal pendant la descente. Selon un second mode de réalisation, on trouve une entretoise fixée au bord menant de la cuiller de manière à maintenir ledit bord à l'écart du fond du puits. Ainsi, les sédiments soulevés par l'impact de la cuiller contre le fond du puits ne risquent pas de pénétrer dans l'intérieur creux de la cuiller.
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Designated States: European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)