Boring or penetrating the earth – Automatic control – Of advance or applied tool weight
Patent
1995-01-27
1995-12-19
Schoeppel, Roger J.
Boring or penetrating the earth
Automatic control
Of advance or applied tool weight
175322, E21B 4400
Patent
active
054761484
ABSTRACT:
A tool for connection in a wellbore drill string for maintaining penetration of a drilling bit attached to the drill string when the drill string becomes stuck or hung up during drilling operations. The tool has a telescoping outer member and inner member which form an annular chamber between them which contains a plurality of springs that are selected to provide a desired amount of contraction of the tool when a predetermined axial compressive load is applied through the tool to the drilling bit. The tool also includes interlocking splines on the outer member and the inner member which inhibit rotational movement of the outer member and inner member relative to each other, and the chamber is filled with hydraulic fluid which is pressurized to the hydrostatic pressure of the wellbore adjacent the tool by a floating piston which is movably located in the chamber. In operation, the tool contracts when an axial compressive load is applied through the tool during drilling operations. If the axial compressive load is decreased due to sticking or hangup of the drilling string, the springs operate to extend the tool, thus maintaining a force on the drilling bit which causes the drilling bit to maintain an amount of penetration in the wellbore.
REFERENCES:
patent: RE28768 (1976-04-01), Mason
patent: 2991636 (1961-07-01), Warren
patent: 3180437 (1965-04-01), Kellner
patent: 3225843 (1965-12-01), Ortloff
patent: 3539026 (1970-11-01), Sutliff et al.
patent: 3804185 (1974-04-01), Mason
patent: 3871193 (1975-03-01), Young
patent: 3949150 (1976-04-01), Mason et al.
patent: 3963228 (1976-06-01), Karle
patent: 4133516 (1979-01-01), Jurgens
patent: 4186569 (1979-02-01), Aumann
patent: 4194582 (1980-03-01), Ostertag
patent: 4211290 (1980-07-01), Mason
patent: 4230197 (1980-10-01), Wenzel
patent: 4246765 (1981-01-01), Zabcik
patent: 4254837 (1981-03-01), Jones
patent: 4276947 (1981-07-01), Garrett
patent: 4281726 (1981-08-01), Garrett
patent: 4394884 (1983-07-01), Skipper
patent: 4434863 (1984-03-01), Garrett
patent: 4466496 (1984-08-01), Jones
patent: 4552230 (1985-11-01), Anderson et al.
patent: 4600062 (1986-07-01), Teng
patent: 4697651 (1987-10-01), Dellinger
patent: 4779852 (1988-10-01), Wassell
patent: 4844157 (1989-07-01), Taylor
patent: 4844181 (1989-07-01), Bassinger
patent: 4862976 (1989-09-01), Meek
patent: 5083623 (1992-01-01), Barrington
patent: 5188191 (1993-02-01), Tomek
patent: 5224898 (1993-07-01), Johnson et al.
Composite Catalogue of Oilfield Equipment and Services (1992-1993), Vol. 1, pp. 402, 403, 405 and 407, published by Gulf Publishing Company, Houston, Tex.
Cougar Toll Brouchure, ST-2 Shock Tool.
Cougar Tool Brochure, ST-5 Steel Spring Shock Tool.
Cougar Tool Brochure, DJ-4 Locking Hydraulic Drilling Jar.
Cougar Tool Brochure, DJ-5 Mechanical Drilling Jar.
Cougar Tool Brochure, DJ-6 Drilling Jar.
LandOfFree
Tool for maintaining wellbore penetration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tool for maintaining wellbore penetration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tool for maintaining wellbore penetration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-987458