Invention Grant
- Patent Title: Downhole circulating valve having a metal-to-metal seal
- Patent Title (中): 井下循环阀具有金属对金属的密封
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Application No.: US13745815Application Date: 2013-01-20
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Publication No.: US08763707B2Publication Date: 2014-07-01
- Inventor: Jimmie Robert Williamson , Leo G. Collins , David L. Reesing , Russell Irving Bayh, III
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agent Lawrence R. Youst
- Main IPC: E21B34/06
- IPC: E21B34/06

Abstract:
A downhole circulating valve includes a generally tubular outer housing having an axially extending internal passageway including an internal seat and at least one generally radially extending opening formed through the housing intersecting the internal seat. A valve element is rotatably disposed within the internal passageway. The valve element has an axially extending internal bore and a head portion disposed at least partially within the internal seat. The head portion includes at least one generally radially extending seal element. The valve element has a first position relative to the housing, wherein the seal element is not aligned with the opening, thereby allowing fluid communication between the opening and the internal passageway. The valve element has a second position relative to the housing, wherein the seal element is aligned with the opening and wherein the seal element forms a metal-to-metal seal with the internal seat, thereby preventing fluid communication between the opening and the internal passageway.
Public/Granted literature
- US20130255934A1 Downhole Circulating Valve Having a Metal-To-Metal Seal Public/Granted day:2013-10-03
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