Cementing procedure for casing

Details Cementing procedure for casing Cementing procedure for casing

1980-07-03

1982-01-26

Leppink, James A.

Wells

Processes

Cementing, plugging or consolidating

166291, E21B 3314, E21B 3316

Patent

active

043124054

ABSTRACT:
This invention relates to improved methods for cementing a casing in a wellbore to prevent poor cement jobs by twisting the casing string under tension or compression while circulating the cement in the annulus between the casing and wellbore in a conventional manner. A J-slot is positioned on the lower portion of the casing. The lower end of the tubing string is provided with a turning and stressing tool and a lug, the lug being engagable with the J-slot. The lug and J-slot are engaged and the lower portion of the casing is caused to twist and stress while cement is being circulated in the wellbore/casing annulus.

REFERENCES:
patent: 2072982 (1937-03-01), Dale
patent: 2609881 (1952-09-01), Warren
patent: 2678082 (1954-04-01), Hall
patent: 2738011 (1956-03-01), Mabry
patent: 2876844 (1959-03-01), Warner
patent: 3205945 (1965-09-01), Holt
patent: 3557875 (1971-01-01), Solum et al.
patent: 3976139 (1976-08-01), Wilder
patent: 4093028 (1978-06-01), Brandon

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