Invention Grant
- Patent Title: Lost circulation shapes
-
Application No.: US16268088Application Date: 2019-02-05
-
Publication No.: US11078748B2Publication Date: 2021-08-03
- Inventor: Graham Hitchcock
- Applicant: Saudi Arabian Oil Company
- Applicant Address: SA Dhahran
- Assignee: Saudi Arabian Oil Company
- Current Assignee: Saudi Arabian Oil Company
- Current Assignee Address: SA Dhahran
- Agency: Bracewell LLP
- Agent Constance G. Rhebergen; Linda L Morgan
- Main IPC: E21B33/13
- IPC: E21B33/13 ; E21B21/00

Abstract:
Systems and methods for sealing a lost circulation zone associated with a subterranean well include a drill string with a circulating port and a lost circulation material. A lost circulation shape is a hollow body having an outer skin and an open interior chamber. The outer skin includes a plurality of perforations that extend through the outer skin, providing fluid communication between an exterior of the lost circulation shape and the open interior chamber. The plurality of perforations are sized to prohibit a passage of lost circulation material between the exterior of the lost circulation shape and the open interior chamber.
Public/Granted literature
- US20200248527A1 LOST CIRCULATION SHAPES Public/Granted day:2020-08-06
Information query