A real-time method is disclosed for maintaining subterranean formation stability through monitoring the interaction between the formation and fluids introduced into (or produced from) a wellbore penetrating the formation. The method employs real-time wellbore (in)stability logging methodology. The method is exemplified by a Pore Pressure Transmission (PPT) test. In such test, test fluids are exposed to Pierre II shales (20% w/w NaCl solution and sodium silicate fluid with 20% w/w NaCl, for example) in a PPT apparatus. Membrane efficiency of the two fluids when exposed to the outcrop shale is calculated, and based on the simultaneous acquisition of acoustic data, estimation of a dynamic rock property is made. Calibrating representative shale (or other formation) core response to drilling fluids (or well service fluids, enhanced recovery fluids, or production fluids) under realistic in-situ conditions aids in accurately modeling for time-dependent formation (in)stability in the field for the entire life of the wellbore, from drilling, completion and through production.
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机译：公开了一种实时方法，该方法用于通过监视地层与引入到穿透地层的井眼中或从中渗透的流体之间的相互作用来维持地下地层的稳定性。该方法采用实时井眼（失稳）测井方法。该方法以孔压力传递（PPT）测试为例。在这种测试中，将测试流体暴露在PPT设备中的Pierre II页岩中（例如20％w / w NaCl溶液和含有20％w / w NaCl的硅酸钠流体）。计算了两种流体暴露于露头页岩时的膜效率，并基于同时获取的声波数据，估算了动态岩石特性。在现实的现场条件下，对代表性的页岩（或其他地层）岩心对钻井液（或钻井服务液，增产采出液或采出液）的响应进行校准，有助于准确模拟随时间变化的现场地层（失稳）稳定性。从钻井，完井到生产的整个井眼寿命。
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