Apparatus and method for improving multilateral well formation and reentry
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United States of America Patent
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Sep 23, 2003
Grant Date -
N/A
app pub date -
Aug 14, 2002
filing date -
Aug 14, 2002
priority date (Note) -
Expired
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Abstract
An apparatus and method are disclosed for improving the formation of multiple lateral wells in a new wellbore and positive, selective reentry of each lateral well. The apparatus functions as an orienting sleeve which is attached to the lower end of the casing used to line the wellbore. The orienting sleeve includes a first end connected to one end of the casing, a second end having a plunger valve, a longitudinal reference point and a lateral reference point. The orienting sleeve cooperates with a sealing member and an orienting member. The sealing member is used to transfer cement from a surface above the wellbore to an area between the casing and the wellbore. The orienting member is used to effectively form multiple lateral wells through the casing or pre-formed openings in the casing. Thus, the orienting sleeve effectively secures the casing to the wellbore and improves the formation of multiple lateral wells using one or more pre-formed openings in the casing.
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