Rock Mechanics In Underground Construction: Proceedings of the ISRM International Symposium 2006 and the 4th Asian Rock Mechanics Symposium

V.AZIZI 1 and H.MEMARIAN 2
1 School of Mining Engineering, University of Tehran, Iran
2 School of Mining Engineering, University of Tehran, Iran
In recent years, rock mechanic gained great interests in petroleum industry. Geomechanical properties of reservoir rocks have an important role on designing of drilling, stability of well bore and planning for production. Rock mechanical properties usually calculate based on direct laboratory tests on cores or using sonic logs. The study of cores is not always possible or even feasible. Cores of limited parts of drilled section are normally available. Coring is expensive and destructive geotechnical test on cores, which are valuable documents, is normally prohibited. This paper presents a new method for indirect measurement and estimation of the rock geomechanical properties, using sonic logs and porosity data. Based on the study of data from three wells, drilled in different formations of three oil fields, in southern Iran, some relations with good correlation coefficients, have been developed. Derived relations can be used to present a continuous picture of the mechanical behaviors of the drilled section.
Keywords: Oil and gas wells, Geomechanical properties, Porosity, Sonic logs, Iran.
V.AZIZI 1 and H.MEMARIAN 2
1 School of Mining Engineering, University of Tehran, Iran
2 School of Mining Engineering, University of Tehran, Iran
Different methods have been used for downhole measuring of formation s shear wave...