Wells – Processes – Cementing – plugging or consolidating
Patent
1992-09-28
1994-06-14
Suchfield, George A.
Wells
Processes
Cementing, plugging or consolidating
166 50, 166292, 166312, E21B 3314
Patent
active
053201728
ABSTRACT:
A well completion process for improved cement placement in a horizontal wellbore where a fluid is circulated down the wellbore for conditioning and cleaning it. Afterwards, a production tube containing centralizers is positioned centrally within the wellbore. Next, a "spacer fluid" is circulated within an annulus formed by the space between the tube and the wellbore so as to clean the annulus out. Subsequently, a cement having a density greater than the spacer fluid is pumped into the annulus. Thereafter, a light weight cement is pumped into the annulus thereby overriding the heavier cement and removing voids in the annulus resulting in more efficient cement placement.
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Hager Jr. George W.
Malone Charles A.
McKillop Alexander J.
Mobil Oil Corporation
Suchfield George A.
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