06263987 is referenced by 92 patents and cites 20 patents.

The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for the second purpose as the casing that is permanently installed in the wellbore for the final completion of oil and gas wells. The rotary drill bit is attached to the drill string, the well drilled, and the well is completed leaving the drill bit attached to the drill string to make a steel cased well. The steel coiled tubing attached to a coiled tubing conveyed mud motor driven rotary drill bit is used to drill oil and gas wells that is used for a second purpose as the tubing that is permanently installed in the wellbore to make a tubing encased well for the final completion of oil and gas wells. The mud motor driven rotary drill bit is attached to the coiled tubing, the well is drilled with said tubing conveyed mud motor driven rotary drill bit, and the well is completed leaving the mud motor driven rotary drill bit attached to the coiled tubing to make a tubing encased well. Various different types of slurry materials are used for well completion that include cement, gravel, water, a “cement clinker”, any “blast furnace slag mixture”, or any other suitable substance that flows under sufficient pressure.

Title
One pass drilling and completion of extended reach lateral wellbores with drill bit attached to drill string to produce hydrocarbons from offshore platforms
Application Number
9/295808
Publication Number
6263987 (B1)
Application Date
April 20, 1999
Publication Date
July 24, 2001
Inventor
William Banning Vail III
Bothell
WA, US
Assignee
Smart Drilling and Completion
WA, US
IPC
E21B 7/20
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