An analytical model to predict the volume of sand during drilling and production

Journal of Rock Mechanics and Geotechnical Engineering

Nikoo Fakhari¹  Raoof Gholami²  Vamegh Rasouli³  Bernt Aadnoy⁴ 

[1] Department of Chemistry, Shahrood University of Technology, Shahrood, Iran;Department of Petroleum Engineering, Curtin University, Miri, Sarawak, Malaysia;Department of Petroleum Engineering, University of North Dakota, Grand Forks, ND, USA;Department of Petroleum Engineering, University of Stavanger, Stavanger, Norway;

关键词: Sand production;    Shape parameter;    Failure criteria;    Carbonate reservoir;    Analytical solution;   

DOI  :  10.1016/j.jrmge.2016.01.002

来源: DOAJ

【 摘 要 】

Sand production is an undesired phenomenon occurring in unconsolidated formations due to shear failure and hydrodynamic forces. There have been many approaches developed to predict sand production and prevent it by changing drilling or production strategies. However, assumptions involved in these approaches have limited their applications to very specific scenarios. In this paper, an elliptical model based on the borehole shape is presented to predict the volume of sand produced during the drilling and depletion stages of oil and gas reservoirs. A shape factor parameter is introduced to estimate the changes in the geometry of the borehole as a result of shear failure. A carbonate reservoir from the south of Iran with a solid production history is used to show the application of the developed methodology. Deriving mathematical equations for determination of the shape factor based on different failure criteria indicate that the effect of the intermediate principal stress should be taken into account to achieve an accurate result. However, it should be noticed that the methodology presented can only be used when geomechanical parameters are accurately estimated prior to the production stage when using wells and field data.

【 授权许可】

Unknown