Method of suspending, completing and working over a well

Details Method of suspending, completing and working over a well Method of suspending, completing and working over a well

2006-06-26

2008-10-21

Bagnell, David J (Department: 3672)

Wells

Processes

Placing or shifting well part

C166S250070, C166S250080, C166S127000, C166S135000, C166S192000, C166S191000, C166S264000, C166S386000, C166S313000, C175S058000, C175S059000, C073S152540

Reexamination Certificate

active

07438135

ABSTRACT:
Methods are provided in which reliance is placed on a first and second barrier respectively positioned in a well10to provide well control during well suspension, completion and/or workover operations. Each of the barriers is below the depth of the lowermost end of a completion string when that string is installed in the well. By not placing either barrier higher up in the well-bore, both of the barriers can remain in place during suspension and completion and workover operations, thus obviating the need to use a BOP stack to supplement well control. This results in a considerable saving in drill rig time and thus significantly reduces the cost of constructing a well.

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