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    • 47. 发明申请
    • DETERMINATION OF DOWNHOLE PRESSURE WHILE PUMPING
    • 井下压力的确定
    • WO2008118986A1
    • 2008-10-02
    • PCT/US2008/058312
    • 2008-03-26
    • SERVICES PETROLIERS SCHLUMBERGERSCHLUMBERGER CANADA LIMITEDSCHLUMBERGER HOLDINGS LIMITEDSCHLUMBERGER TECHNOLOGY B.V.PRAD RESEARCH AND DEVELOPMENT LTD.COATES, Richard TimothyMILLER, Douglas E.SULLIVAN, PhilipAUZERAIS, FrancoisHABASHY, Tarek M.
    • COATES, Richard TimothyMILLER, Douglas E.SULLIVAN, PhilipAUZERAIS, FrancoisHABASHY, Tarek M.
    • E21B47/04E21B47/06E21B47/18
    • E21B47/04E21B47/06E21B47/18
    • Tubewaves are used to transmit an indication of the depth at which a condition is detected in a well. In particular, the depth is calculated based on the difference in arrival time at the surface of a first tubewave which propagates directly upward in the borehole and a second tubewave which initially travels downward and is then reflected upward. The tubewaves may be generated by a canister designed to implode at a certain pressure. After being introduced into the flowline at an above ground inlet, the canister is carried downhole by gravity and the fluid being pumped. When the canister reaches a depth at which its pressure tolerance is exceeded, it implodes and generates the tubewaves. An analyzer at the surface detects the tubewaves with a hydrophone array and generates a pressure versus depth profile of the well, i.e., one data point for each implosion. Canisters may be acoustically tagged by controlling volume and orifice size in order to generate tubewaves having particular frequency and amplitude characteristics. Canisters may also be configured to produce multiple implosions, e.g., one implosion at each of a selection of different pressures. Canisters may also be equipped with triggering and arming mechanisms, and may generate tubewaves in response to conditions other than a particular pressure.
    • 涡卷用于传输在井中检测到条件的深度的指示。 特别地,深度是基于在井眼中直接向上传播的第一管风管的表面到达时间的差异以及最初向下行进并然后被向上反射的第二管道涡流来计算的。 管道可以由设计成在一定压力下膨胀的罐产生。 在引入到地面入口的流线之后,通过重力将罐承载在井下,并且泵送流体。 当罐达到超过其压力公差的深度时,它会打开并产生管道。 表面上的分析仪用水听器阵列检测波音管,并产生井的压力与深度分布,即每个内爆的一个数据点。 为了产生具有特定的频率和振幅特性的波管,可以通过控制体积和孔口尺寸来将气囊进行声学标记。 罐也可以被配置为产生多个内爆,例如在不同压力的选择中的每一个处产生一个内爆。 罐也可以配备触发和布防机构,并且可以响应于特定压力以外的条件而产生管道。
    • 48. 发明申请
    • WIRELESS LOGGING OF FLUID FILLED BOREHOLES
    • 流体填充钻孔的无线记录
    • WO2008118981A2
    • 2008-10-02
    • PCT/US2008/058306
    • 2008-03-26
    • SERVICES PETROLIERS SCHLUMBERGERSCHLUMBERGER CANADA LIMITEDSCHLUMBERGER HOLDINGS LIMITEDSCHLUMBERGER TECHNOLOGY B.V.PRAD RESEARCH AND DEVELOPMENT LTD.MILLER, Douglas E.SULLIVAN, PhilipCOATES, Richard TimothyAUZERAIS, FrancoisHABASHY, Tarek M.GUILLOT, DominiqueSHAMPINE, Rod
    • MILLER, Douglas E.SULLIVAN, PhilipCOATES, Richard TimothyAUZERAIS, FrancoisHABASHY, Tarek M.GUILLOT, DominiqueSHAMPINE, Rod
    • E21B47/10E21B41/00
    • 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.
    • 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,使得在发出的声音的某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响应于该条件而可操作的触发器; 发生器,其可操作以响应于所述触发而在所述钻孔中发出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变化的传感器,所述检测指示预定条件已经发生。 也可以估计流体填充井筒系统的性质的值。 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速率中的至少一个的数据,然后通过采用用于预测压力和流速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。