Cementing apparatus and method

Details Cementing apparatus and method Cementing apparatus and method

1990-04-04

1991-06-18

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166154, 166184, 166187, 166285, 166317, 166383, E21B 3314, E21B 3410

Patent

active

050242733

ABSTRACT:
Apparatus is disclosed for use in placing cement within the annulus between a casing string and a well bore in which the casing string is suspended, such apparatus including a stage collar connectible as part of the casing string and having a packing element mounted thereon and adapted to be inflated into engagement with the well bore, one or more side ports through which cement may be circulated into the annulus above the packer, tubular members or sleeves for opening and closing the ports following inflation of the packing element.

REFERENCES:
patent: 3503445 (1970-03-01), Cochrum et al.
patent: 3524503 (1970-08-01), Baker
patent: 3606924 (1971-09-01), Malone
patent: 3768562 (1973-10-01), Baker
patent: 3811500 (1974-05-01), Morrisett et al.
patent: 3948322 (1976-04-01), Baker
patent: 4421165 (1983-12-01), Szarka
"Sub-Surface Cementing Equipment", Composite Catalog of Oilfield and Pipeline Equipment, 1986-1987, pp. 2442-2443.
Lynes Brochure, "There's Something New Inside the Lynes ECP", 10-81.
Davis-Lynch, Inc., Technical Unit 100, "Integral Casing Packer", Houstion, Tex., Nov. 1988, 8 pages.

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