Invention Grant
- Patent Title: Method and device for logging the fluid depth in a wellbore
- Patent Title (中): 用于记录井眼中流体深度的方法和装置
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Application No.: US12728536Application Date: 2010-03-22
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Publication No.: US08902704B2Publication Date: 2014-12-02
- Inventor: Rainer Zamow , Kurt Sonnleitner
- Applicant: Rainer Zamow , Kurt Sonnleitner
- Applicant Address: AT
- Assignee: Rohol-Aufsuchungs AG
- Current Assignee: Rohol-Aufsuchungs AG
- Current Assignee Address: AT
- Agency: Salter & Michaelson
- Main IPC: G01V1/40
- IPC: G01V1/40 ; G01V1/44 ; G01F23/296 ; E21B47/04

Abstract:
In a method for logging the location of a fluid depth in a wellbore, an acoustic event is allowed to take place in a specific manner at the ground surface. This acoustic event generates pressure waves. The pressure waves travel in the wellbore downward. The pressure waves traveling in the wellbore are reflected at least also at the fluid depth. At the ground surface, the pressure waves traveling there out of the wellbore are picked up and the time of travel since the acoustic event is measured. The picked-up and measured pressure waves are analyzed and, together with the associated time of travel, the location of the fluid depth is deduced. The acoustic event generates a signal pattern having a predetermined, time-variable frequency spectrum. The signal pattern is emitted as vibration event into the wellbore, travels downward, and is reflected. At the ground surface, the picked-up signals originating from the wellbore are analyzed. During the analysis, vibration events that do not correlate with the emitted signal pattern are filtered out. From the vibration events that are among the picked-up signals and correlate with the emitted signal pattern and from the time of travel since the radiation of the signal pattern, the location of the fluid depth is deduced.
Public/Granted literature
- US20110228637A1 METHOD AND DEVICE FOR LOGGING THE FLUID DEPTH IN A WELLBORE Public/Granted day:2011-09-22
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