Boring or penetrating the earth – Processes
Patent
1998-11-17
2000-06-27
Tsay, Frank S.
Boring or penetrating the earth
Processes
175339, E21B 700, E21B 1060
Patent
active
060795077
ABSTRACT:
This invention discloses a drilling structure having a body defining at least one primary channel and at least one secondary channel therein to initiate and maintain recirculation of an amount of drilling fluid back through the secondary channel to maintain positive, independent flow of drilling fluid through each primary channel of the drilling structure. The recirculation of drilling fluid is encouraged by providing a recirculation passageway in fluid communication with the primary channel defined by a portion of the body of the drilling structure that separates positively flowing drilling mud from drilling mud that is being recirculated. The recirculation action of the fluid in the recirculating loop may be fed and brought about by entrainment of the fluid with jetted fluid from an adjacent nozzle. The portion of the body may form a partition, such as a wall extending at least partially between the sides of the primary channel, a fin positioned within the primary channel that generally radially extends from the centerline of the drilling structure, or an internal channel or feeder that extracts fluid from the annulus at a point of low velocity and reintroduces it at a point of higher velocity proximate the bit face, usually near a nozzle. In addition, portions of the drilling structure are streamlined to further encourage positive, stable flow of fluid and formation cuttings generated from an associated cutting structure.
REFERENCES:
patent: 3693735 (1972-09-01), Cortes
patent: 4190125 (1980-02-01), Emmerich et al.
patent: 4200160 (1980-04-01), Newcomb
patent: 4245708 (1981-01-01), Cholet et al.
patent: 4331207 (1982-05-01), Castel
patent: 4351402 (1982-09-01), Gonzalez
patent: 4368787 (1983-01-01), Messenger
patent: 4390072 (1983-06-01), Phelan
patent: 4463220 (1984-07-01), Gonzalez
patent: 4492277 (1985-01-01), Creighton
patent: 4540055 (1985-09-01), Drummond et al.
patent: 4577706 (1986-03-01), Barr
patent: 4610316 (1986-09-01), Boaz
patent: 4673045 (1987-06-01), McCullough
patent: 4727946 (1988-03-01), Barr et al.
patent: 4733734 (1988-03-01), Bardin et al.
patent: 4733735 (1988-03-01), Barr et al.
patent: 4738320 (1988-04-01), Bardin et al.
patent: 4744426 (1988-05-01), Reed
patent: 4794944 (1989-01-01), Deane et al.
patent: 4819746 (1989-04-01), Brown et al.
patent: 4823891 (1989-04-01), Hommani et al.
patent: 4848491 (1989-07-01), Burridge et al.
patent: 4856601 (1989-08-01), Raney
patent: 4869330 (1989-09-01), Tibbitts
patent: 4883132 (1989-11-01), Tibbitts
patent: 4887677 (1989-12-01), Warren et al.
patent: 4913244 (1990-04-01), Trujillo
patent: 5096005 (1992-03-01), Ivie et al.
patent: 5099932 (1992-03-01), Hixon
patent: 5143162 (1992-09-01), Lyon et al.
patent: 5150757 (1992-09-01), Nunley
patent: 5199511 (1993-04-01), Tibbitts et al.
patent: 5284215 (1994-02-01), Tibbitts
patent: 5293946 (1994-03-01), Besson et al.
patent: 5341888 (1994-08-01), Deschutter
patent: 5355967 (1994-10-01), Mueller et al.
patent: 5363932 (1994-11-01), Azar
patent: 5417296 (1995-05-01), Murdock
patent: 5433280 (1995-07-01), Smith
patent: 5671818 (1997-09-01), Newton et al.
Cunningham, Liquid Jet Pump Modelling: Effects of Axial Dimensions on Theory-Experiment Agreement, 2nd Symposium on Jet Pumps & Ejectors and Gas Lift Techniques (Mar. 24-26, 1975) at F1-1 through F1-15.
Huffstutler, Flow Pattern Changes Improve Roller Cone Bit Performance, Oil & Gas Journal (May 6, 1996) at 113-116.
Schmitt, Diversity of Jet Pumps and Ejector Techniques, 2nd Symposium on Jet Pumps & Ejectros and Gas Lift Techniques (Mar 24-26, 1975) at A4-35 through A4-49.
Berzas Sean K.
Cooley Craig H.
Hansen Wayne R.
Trujillo William R.
Baker Hughes Inc.
Tsay Frank S.
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