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(11)    Patent No :    AP 2132   
(21)    Application No :    AP/P/2006/003518   
(22)    Filing Date :    06.08.2004   
(24)    Date of Grant &    11.07.2010   
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
AU    2003904183    08.08.2003
AU    2003905437    06.10.2003
US    10/678,636    06.10.2003

et al

(84)    Designated State

BW    GM  GH   KE   LS   MW  MZ   NA   SL

SD    SZ   T Z   UG   ZM   ZW

(73) Applicant(s)

WOODSIDE ENERGY LTD, 240 St Georges Terrace, Perth,

WA 6000,
(72) Inventors

PAGE Peter Ernest, Australia

BURNS Alexander Jeffrey, Australia

(74) Representative

(51)  International  Classification   E21B33/035 (2006.01)    E21B33/129 (2006.01)

(54)    Title

A method of suspending, completing and working over a well

(57)    Abstract

In the various methods of the present invention, reliance is placed on a first and second barrier 26 and 30 respectively positioned in a well 10 to 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 10. 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.

(56)    Documents Cited :    US 5267469 Y    GB 2361725 Y    US 5979553 Y    EP 1233145 Y    US 6170578 Y


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