Invention Application
- Patent Title: Pumps-Off Annular Pressure While Drilling System
- Patent Title (中): 钻孔系统时泵的环形压力
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Application No.: US14710457Application Date: 2015-05-12
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Publication No.: US20150330168A1Publication Date: 2015-11-19
- Inventor: Yong Sun , Bo Yu , Sandra Reyes , Aldrick Garcia-Mayans
- Applicant: Schlumberger Technology Corporation
- Main IPC: E21B21/08
- IPC: E21B21/08 ; E21B21/10 ; G05B15/02 ; E21B47/06

Abstract:
Aspects of the disclosure can relate to a method for transmitting a pump-off pressure profile within a limited bandwidth. For example, a method may include selecting a compression protocol based upon at least one of a time length associated with the pump-off pressure data, a relative mean-squared error associated with the pump-off pressure data, or a maximum error associated with the pump-off pressure data. The method also includes compressing pump-off pressure data with the compression protocol to produce compression bits. The compression bits represent the pump-off pressure profile. The method also includes transmitting, via a communication module, the compression bits to a computing device.
Public/Granted literature
- US10125558B2 Pumps-off annular pressure while drilling system Public/Granted day:2018-11-13
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