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Methods for determining in situ shale strengths, elastic properties, pore pressures, formation stresses, and drilling fluid parameters
Methods for determining in situ shale strengths, elastic properties, pore pressures, formation stresses, and drilling fluid parameters
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机译：确定原位页岩强度，弹性，孔隙压力，地层应力和钻井液参数的方法
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摘要
A method for determining drilling fluid density for stabilizing a wellbore including obtaining shale cuttings from a wellbore. In one embodiment of a method according to this invention, shale cuttings are obtained from a wellbore and their index properties, including but not limited to surface area, is measured; mean effective stress around the wellbore is calculated using the geostatic overburden in situ stress, the field pore pressure, and the total stress around the wellbore; the in situ shale strength is determined using a correlation between surface area, mean effective stress and shale strength; and drilling fluid density is determined using the shale strength. Methods for determining in situ shale strengths, elastic properties, pore pressures, and formation stresses of low permeability rocks.
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