Wells – With below and above ground modification – Head for tool – piston or cleaner
Patent
1990-05-15
1991-09-24
Kisliuk, Bruce M.
Wells
With below and above ground modification
Head for tool, piston or cleaner
166 90, 166291, E21B 2310, E21B 3305
Patent
active
050506730
ABSTRACT:
A system for cementing a casing string in a slant well includes a slant drilling rig including a slanted mast having a pair of spaced rails with an elevator spanning between the rails and reciprocable along a length thereof for reciprocating a casing string with the casing string lying generally between and parallel to the rails. The mast has an open generally upward facing side. A cement plug container apparatus has a cementing manifold and a release plunger assembly attached thereto and positioned about the container relative to each other such that an angle of substantially less than 180.degree., and most preferably approximately 980.degree., is defined therebetween. Thus, the container is substantially free of any radial protrusions outside of that angle and can lie generally flat within the confines of the space between the rails of the tilted mast. The container is of a lift through design having a lifting sub attached to the upper end thereof so that the container and a casing string supported therefrom can be reciprocated within the slant rig so as to reciprocate the casing string while cementing the same in place.
REFERENCES:
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patent: 2615519 (1952-10-01), Carr
patent: 2630179 (1953-03-01), Brown
patent: 2647582 (1953-08-01), Brown et al.
patent: 2984301 (1961-05-01), Scott
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patent: 4246967 (1981-01-01), Harris
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Exhibit A-Drawing of Cement Head Apparatus Sold by Nodeco (undated but admitted to be prior art).
Exhibit B-Oil & Gas Journal, May 14, 1984, pp. 72-74, article entitled "Slant Holes Cap Shallow Gas Under Lake".
Exhibit C-Copy of Cover and p. 2423, of Halliburton Services Sales & Service Catalog No. 43, published 1985.
Exhibit D-Advertising Brochure Dated 7-15-81, of Halliburtoon Company.
Exhibit E-Two Drawings of a Cementing Head Apparatus (undated but admitted to be prior art).
Exhibit F-Advertising Brochure for a Roto-Tek Cementing System (undated but admitted to be prior art).
Exhibit G-Advertisement for a Cementing Manifold Sold by Lindsey Completion Systems (undated but admitted to be prior art).
Beavers L. Wayne
Duzan James R.
Halliburton Company
Kisliuk Bruce M.
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