Boring or penetrating the earth – Processes
Reexamination Certificate
2005-04-12
2005-04-12
Thompson, Kenn (Department: 3672)
Boring or penetrating the earth
Processes
C175S393000, C175S324000, C175S340000
Reexamination Certificate
active
06877571
ABSTRACT:
A Down Hole Drilling Assembly (DHDA) that induces artificial lift to remove the drilling fluid from a well bore using a jet pump attached to a casing string. The DHDA includes a drill string that passes through the jet pump assembly. The power fluid is separated from the drilling fluid until after it has passed through the nozzle of the jet pump. The jet pump assembly is joined to a concentric casing string. The jet pump also contains a bladder element that expands to redirect the flow of the drilling fluid from the inner annulus into the jet pump assembly. The jet pump assembly lifts the drilling fluid, lowering the fluid level within a well bore to a point where the hydrostatic pressure near the bottom of the well is lower than the pore pressure of the formation being drilled thereby creating under balanced conditions.
REFERENCES:
patent: 270488 (1883-01-01), Saunders
patent: 2201270 (1940-05-01), McIntyre
patent: 2234454 (1941-03-01), Richter
patent: 2849214 (1958-08-01), Hall
patent: 2946565 (1960-07-01), Williams
patent: 3087558 (1963-04-01), Dougherty
patent: 3208539 (1965-09-01), Henderson
patent: 3924696 (1975-12-01), Horlin et al.
patent: 3948330 (1976-04-01), Langford, Jr.
patent: 4022285 (1977-05-01), Frank
patent: 4239087 (1980-12-01), Castel
patent: 4436166 (1984-03-01), Hayatdavoudi
patent: 4534426 (1985-08-01), Hooper
patent: 4567954 (1986-02-01), Voight et al.
patent: 4630691 (1986-12-01), Hooper
patent: 4687066 (1987-08-01), Evans
patent: 4744730 (1988-05-01), Roeder
patent: 5355967 (1994-10-01), Mueller et al.
patent: 5456326 (1995-10-01), Raines
patent: 5562171 (1996-10-01), Besson et al.
patent: 5771984 (1998-06-01), Potter
patent: 5775443 (1998-07-01), Lott
patent: 5836404 (1998-11-01), Trujillo
patent: 5921476 (1999-07-01), Akin
patent: 5992763 (1999-11-01), Smith
patent: 6129152 (2000-10-01), Hosie et al.
patent: 6209663 (2001-04-01), Hosie
patent: 6276455 (2001-08-01), Gonzalez
patent: 20020170749 (2002-11-01), Hoyer et al.
patent: 1 288 434 (2003-05-01), None
Hughes William James
Renfro Jimmie Josh
Siegesmund Rudolf O.
Sunstone Corporation
Thompson Kenn
LandOfFree
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