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    • 4. 发明申请
    • WIRELESS LOGGING OF FLUID FILLED BOREHOLES
    • 流体填充的无缝钢管的无线记录
    • WO2008118981A3
    • 2009-04-30
    • PCT/US2008058306
    • 2008-03-26
    • SCHLUMBERGER SERVICES PETROLSCHLUMBERGER CA LTDSCHLUMBERGER HOLDINGSSCHLUMBERGER TECHNOLOGY BVPRAD RES & DEV LTDMILLER DOUGLAS ESULLIVAN PHILIPCOATES RICHARD TIMOTHYAUZERAIS FRANCOISHABASHY TAREK MGUILLOT DOMINIQUESHAMPINE ROD
    • MILLER DOUGLAS ESULLIVAN PHILIPCOATES RICHARD TIMOTHYAUZERAIS FRANCOISHABASHY TAREK MGUILLOT DOMINIQUESHAMPINE ROD
    • E21B47/00
    • G01V1/52E21B47/0005E21B47/042E21B47/06E21B47/065E21B47/091E21B47/18G01V1/48
    • A predetermined condition in a fluid-filled wellbore system can be detected by generating at least one sound in the wellbore system in response to the condition, such that a detectable change is created in some characteristic of the emitted sound, and detecting the at least one sound and the change, the detection being indicative that the predetermined condition has occurred. Equipment for facilitating detection of the condition can include a trigger operable in response to the condition; a generator operable to emit sound in the borehole and to create a detectable change in some characteristic of the emitted sound in response to the trigger; and at least one sensor operable to monitor the sound and detect the change, the detection being indicative that the predetermined condition has occurred. It is also possible to estimate a value of a property of a fluid-filled wellbore system. This can be accomplished by recording data including at least one of pressure and rate of flow at one or more locations in the wellbore system, and then estimating the value of the property by employing a model for predicting at least one of pressure and rate of flow dependent upon parameters detailing at least one of wellbore system geometry, viscoacoustic properties of the fluid and entrained solids contained in the wellbore system, locations of boundaries and entrained solids, and characteristics and locations of disturbances to pressure and flow in the wellbore system, in order to determine a best prediction of some attribute of the recorded data.
    • 在流体填充的井眼系统中的预定条件可以通过响应于条件在井眼系统中产生至少一个声音来检测,使得在发射声音的一些特征中产生可检测的变化,并且检测至少一个 声音和变化,检测指示预定条件已经发生。 用于便于检测条件的设备可以包括可响应于该条件操作的触发器; 发射器,其可操作以响应于所述触发而在所述井眼中发射声音并且产生可发射的声音的一些特性的可检测变化; 以及至少一个可操作以监测声音并检测该变化的传感器,所述检测指示预定条件已经发生。 还可以估计流体填充的井眼系统的性质的值。 这可以通过记录包括在井眼系统中的一个或多个位置处的压力和流量中的至少一个的数据,然后通过采用用于预测压力和流量中的至少一个的模型来估计该属性的值来实现 依赖于详细描述井筒系统几何形状,井眼系统中包含的流体和夹带固体的粘度声学性质,边界和夹带固体的位置以及井眼系统中的压力和流动的特性和位置的参数的参数,按顺序 以确定记录数据的一些属性的最佳预测。