Through-tubing rotary drilling

Details Through-tubing rotary drilling Through-tubing rotary drilling

1997-06-26

1999-01-19

Schoeppel, Roger

Wells

Wells with lateral conduits

1661175, 175 61, 175 81, E03B 311

Patent

active

058604740

ABSTRACT:
A method for recompleting a wellbore containing a casing and a tubing string extending from a surface through the casing to a zone of interest by through-tubing rotary drilling by forming an opening through the casing at a selected point, passing a rotatable drill string including a drill bit through the tubing and drilling a second wellbore by drilling out of the cased wellbore through the opening.

REFERENCES:
patent: 5188190 (1993-02-01), Skaalure
patent: 5211715 (1993-05-01), Braden et al.
patent: 5301760 (1994-04-01), Graham
patent: 5379845 (1995-01-01), Blount et al.
patent: 5383522 (1995-01-01), Hailey
patent: 5423387 (1995-06-01), Lynde
patent: 5452759 (1995-09-01), Carter et al.
patent: 5484021 (1996-01-01), Hailey
"Million Dollar Well", Kay Cashman, Petroleum News Alaska, pp. 1, 8 & 23, Nov. 18-Dec. 15, 1996.
"BP Downhole Talk", British Petroleum Corporation, Dec. 1996, Issue 65., pp. 4 & 5.

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