Cementing and rotating an upper well casing attached by swivel t

Details Cementing and rotating an upper well casing attached by swivel t Cementing and rotating an upper well casing attached by swivel t

1988-02-12

1989-09-26

Neuder, William P.

Wells

Processes

Cementing, plugging or consolidating

166116, 166184, 166289, E21B 3314, E21B 3316

Patent

active

048693235

ABSTRACT:
A method for completing a well to provide an uncemented lower casing and an upper cemented casing. The lower casing and upper casing are connected at a swivel joint so that only the upper casing is rotated while cementing. Inflatable packers and a plug are positioned at the lower casing to prevent entry of cement, while a port collar allows cement to flow into the annulus surrounding the upper casing.
The invention is particularly useful when setting long lengths of casing and when completing highly deviated or horizontal wellbores. The method also allows an existing conventionally-completed well to be re-drilled and completed as a highly-deviated or horizontal well.

REFERENCES:
patent: 3901318 (1975-08-01), Fortenberry
patent: 4678031 (1987-07-01), Blandford et al.
"Cementing High-Angle Wells Using Cement-Expanded Formation Packers and/or Casing Rotation", by Webster et al.; 1987; SPE/IADC 1987, Drilling Conference.
"Liner Rotation While Cementing: An Operator's Experience in South Texas"; Arceneaux et al.; 1985; SPE/IADC Drilling Conference.
"Liner Rotation Proper Planning Improve Primary Cementing Success"; Hyatt et al., 1974.
"Guides Emerge for Cementing Horizontal Strings"; Parcevaux; 1987; Oil and Gas Journal.

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