Estimation of Caving volumetric-flow using the ultrasonic Doppler method

  • Jenny-Mabel Carvajal-Jiménez Ecopetrol S.A. - Instituto Colombiano del Petróleo (ICP)
  • Luis-Fernando Ramirez-Silva Universidad Industrial de Santander.
  • Ana B. Ramirez Universidad Industrial de Santander.
Keywords: Geomechanics, Acoustics, Flow line, Drilling, Wellbore stability


Estimating the volumetric flow of cuttings and cavings that are extracted and transported by the drilling mud into the flow line while drilling a well is of major interest to for drillers so that they can understand the drilling conditions and maintain the wellbore stability. In this paper, a new method to estimate the volumetric flow of cavings via the Doppler effect is proposed. The proposed method is a non-invasive method that uses two piezo-electric acoustic sensors located on the flow line, one acting as an emitter and the other acting as a receiver. The system device estimates cavings and cuttings by measuring the mud and solids flow on a real-time basis. Results obtained at a laboratory experimental level reflected a maximum volumetric-flow error of 10.5% for small-sized cavings and 34,7% for large-sized cavings. According to those results, the method may be suitable for estimating caving
volumetric-flow with acoustical techniques at the flow line while drilling and it might be used as a real-time operation method to evaluate wellbore stability.

How to Cite
Carvajal-Jiménez, J.-M., Ramirez-Silva, L.-F., & Ramirez, A. B. (2018). Estimation of Caving volumetric-flow using the ultrasonic Doppler method. CT&F - Ciencia, Tecnología Y Futuro, 8(1), 61–66.


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