公开(公告)号：US20150159467A1

公开(公告)日：2015-06-11

申请号：US14399464

申请日：2013-05-06

Applicant: SHELL OIL COMPANY

Inventor： Stefan Aernout Hartman ,  Petrus Cornelis Kriesels ,  Dhivya Sashidhar

IPC: E21B33/14 ,  E21B21/00 ,  E21B34/06 ,  E21B43/10

CPC classification number: E21B33/14 ,  E21B7/20 ,  E21B21/00 ,  E21B34/06 ,  E21B43/103

Abstract: The invention provides a method and a system for sealing an annulus enclosing a tubular element in a wellbore. The method comprises the steps of introducing a first drilling fluid in the wellbore; drilling an open hole section of the wellbore using a drilling tool suspended at the end of a drill string; replacing the drilling fluid with a sealing fluid; extending the tubular element into the open hole section of the wellbore; and flushing part of the sealing fluid out of the wellbore, leaving an annulus between the tubular element and a wellbore wall filled with a layer of sealing fluid. The aforementioned steps may be repeated as required.

Abstract translation: 本发明提供一种用于密封围绕井筒中的管状元件的环的方法和系统。 该方法包括以下步骤：在井眼中引入第一钻井流体; 使用悬挂在钻柱末端的钻孔工具钻井孔的开孔部分; 用密封液代替钻井液; 将所述管状元件延伸到所述井眼的开孔部分中; 并将密封流体的一部分冲洗出井筒，在管状元件和填充有一层密封流体的井筒壁之间留下环形空间。 可以根据需要重复上述步骤。

公开(公告)号：US09482070B2

公开(公告)日：2016-11-01

申请号：US14399464

申请日：2013-05-06

Applicant: SHELL OIL COMPANY

Inventor： Stefan Aernout Hartman ,  Petrus Cornelis Kriesels ,  Dhivya Sashidhar

IPC: E21B33/14 ,  E21B43/10 ,  E21B7/20 ,  E21B21/00 ,  E21B34/06

CPC classification number: E21B33/14 ,  E21B7/20 ,  E21B21/00 ,  E21B34/06 ,  E21B43/103

Abstract: The invention provides a method and a system for sealing an annulus enclosing a tubular element in a wellbore. The method comprises the steps of introducing a first drilling fluid in the wellbore; drilling an open hole section of the wellbore using a drilling tool suspended at the end of a drill string; replacing the drilling fluid with a sealing fluid; extending the tubular element into the open hole section of the wellbore; and flushing part of the sealing fluid out of the wellbore, leaving an annulus between the tubular element and a wellbore wall filled with a layer of sealing fluid. The aforementioned steps may be repeated as required.

Abstract translation: 本发明提供一种用于密封围绕井筒中的管状元件的环的方法和系统。 该方法包括以下步骤：在井眼中引入第一钻井流体; 使用悬挂在钻柱末端的钻孔工具钻井孔的开孔部分; 用密封液代替钻井液; 将所述管状元件延伸到所述井眼的开孔部分中; 并将密封流体的一部分冲洗出井筒，在管状元件和填充有一层密封流体的井筒壁之间留下环形空间。 可以根据需要重复上述步骤。