Failure criterion effect on solid production prediction and selection of completion solution

Journal of Rock Mechanics and Geotechnical Engineering

Siavash Nadimi¹  Bijan Maleki²  Dariush Javani²  Mohammad Ali Aghighi³  Bernt Aadnoy⁴  Mahdi Rastegarnia⁵ 

[1] Department of Chemical Engineering, Energy and Geoscience Institute, The University of Utah, Salt Lake City, UT 84112, USA;Department of Mining Engineering, Imam Khomeini International University, Qazvin, Iran;Department of Mining Engineering, University of Tehran, Tehran, Iran;Department of Petroleum Engineering, University of Stavanger, Stavanger, Norway;Department of Petrophysics, Homai Well Services Company, Tehran, Iran;

关键词: Solid production;    Mechanical earth model;    Failure criterion;    Reservoir depletion;    Completion solution;   

DOI  :  10.1016/j.jrmge.2017.07.004

来源: DOAJ

【 摘 要 】

Production of fines together with reservoir fluid is called solid production. It varies from a few grams or less per ton of reservoir fluid posing only minor problems, to catastrophic amount possibly leading to erosion and complete filling of the borehole. This paper assesses solid production potential in a carbonate gas reservoir located in the south of Iran. Petrophysical logs obtained from the vertical well were employed to construct mechanical earth model. Then, two failure criteria, i.e. Mohr–Coulomb and Mogi–Coulomb, were used to investigate the potential of solid production of the well in the initial and depleted conditions of the reservoir. Using these two criteria, we estimated critical collapse pressure and compared them to the reservoir pressure. Solid production occurs if collapse pressure is greater than pore pressure. Results indicate that the two failure criteria show different estimations of solid production potential of the studied reservoir. Mohr–Coulomb failure criterion estimated solid production in both initial and depleted conditions, where Mogi–Coulomb criterion predicted no solid production in the initial condition of reservoir. Based on Mogi–Coulomb criterion, the well may not require completion solutions like perforated liner, until at least 60% of reservoir pressure was depleted which leads to decrease in operation cost and time.

【 授权许可】

Unknown