Boring or penetrating the earth – Boring without earth removal
Patent
1992-12-08
1994-06-14
Bui, Thuy M.
Boring or penetrating the earth
Boring without earth removal
166278, 175 65, E21B 700
Patent
active
053201787
ABSTRACT:
A sand control screen is installed in a well by interposing the screen in a drillstring having a retrievable bit and drive motor. The screen is drilled into place with the distal end of the drillstring and remains in the wellbore. The drillstring may be disconnected from a bottom hole assembly comprising the screen and the distal end of the drillstring and replaced by a tubing string having a packer or other external seal member interposed therein for sealing one portion of the wellbore from another. The sand control screen has a basepipe with plural apertures temporarily closed plugs which are threadedly or force-fit in the apertures. The plugs may be formed of a meltable or dissolvable fiber reinforced wax, for example, or an active metal which may be dissolved by an acid or caustic solution. The screen may also include a temporary plugging medium such as wax in the interstices of the screen sleeve to prevent accumulation of drilling fluid solids during insertion in the wellbore.
REFERENCES:
patent: 4995456 (1991-02-01), Cornette et al.
patent: 5145004 (1992-09-01), Cornette
patent: 5253708 (1993-10-01), Alexander
patent: 5261486 (1993-11-01), Cornette et al.
Atlantic Richfield Company
Bui Thuy M.
Martin Michael E.
LandOfFree
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