Foam drilling simulator

Amir Paknejad, Jerome J. Schubert, Mahmood Amani

Research output: Contribution to conferencePaper


Although the use of compressible drilling fluids is experiencing growth, the flow behavior and stability properties of drilling foams are more complicated than those of conventional fluids. In contrast with conventional mud, the physical properties of foam change along the wellbore. Foam physical and thermal properties are strongly affected by pressure and temperature. Many problems associated with field applications still exist, and a precise characterization of the rheological properties of these complex systems needs to be performed. The accurate determination of the foam properties in circulating wells helps to achieve better estimation of foam rheology and pressure. A computer code is developed to process the data and closely simulate the pressure during drilling a well. The model also offers a detailed discussion of many aspects of foam drilling operations and enables the user to generate many comparative graphs and tables. The effects of some important parameters such as: back-pressure, rate of penetration, cuttings concentration, cuttings size, and formation water influx on pressure, injection rate, and velocity are presented in tabular form. A discretized heat transfer model is formulated with an energy balance on a control volume in the flowing fluid. The finite difference model (FDM) is used to write the governing heat transfer equations in discretized form. A detailed discussion on the determination of heat transfer coefficients and the solution approach is presented.

Original languageEnglish
Number of pages15
Publication statusPublished - 2 Jul 2007
EventSPE 15th Middle East Oil and Gas Show and Conference, MEOS 2007 - Bahrain, Bahrain
Duration: 11 Mar 200714 Mar 2007


OtherSPE 15th Middle East Oil and Gas Show and Conference, MEOS 2007


ASJC Scopus subject areas

  • Engineering(all)

Cite this

Paknejad, A., Schubert, J. J., & Amani, M. (2007). Foam drilling simulator. 907-921. Paper presented at SPE 15th Middle East Oil and Gas Show and Conference, MEOS 2007, Bahrain, Bahrain.