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公开(公告)号：US06829922B2
公开(公告)日：2004-12-14
申请号：US10255124
申请日：2002-09-25
申请人： Ronald J. Patin , Dennis W. Gray , James H. Cantrell , D. Chad Brenneis , Garland W. Davis , Wendell D. Riley
发明人： Ronald J. Patin , Dennis W. Gray , James H. Cantrell , D. Chad Brenneis , Garland W. Davis , Wendell D. Riley
IPC分类号： G01N3700
CPC分类号： G01N9/00 , G01N33/383 , G01N2203/00
摘要： A test method for foamed cement does not transfer the test composition under pressure from one device to another and the equipment is not handled under dangerous pressure, thereby providing a safe test method. Steps include: rotating a paddle at a first speed in a pressurized foamable cement composition in a receptacle in a high pressure, high temperature chamber such that the foamable cement composition becomes a foamed cement; rotating the paddle at a second speed in the pressurized foamed cement for a selected time period; maintaining the foamed cement static after the selected time period and increasing temperature in the chamber during a foamed cement setting period; thereafter reducing temperature in the chamber and reducing pressure in the chamber; removing the foamed cement in a set condition and the paddle from the chamber; removing the set foamed cement from the paddle; and testing the removed foamed cement.
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公开(公告)号：US07128149B2
公开(公告)日：2006-10-31
申请号：US11211974
申请日：2005-08-24
CPC分类号： C09K8/42 , Y10S507/904 , Y10S507/927
摘要： Apparatus and methods for determining suitable displacement fluids for use in subterranean cementing operations, and methods of cementing that use such displacement fluids, are provided. Examples of methods include methods of water-wetting an annulus in a subterranean formation having an oleaginous-external/aqueous-internal fluid disposed on at least a portion of one or more surfaces of the annulus. Another example of a method is a method of using an inverter fluid in a subterranean formation that includes a tubular string disposed therein having an annular region adjacent the outer surface of the tubular string, at least part of the annular region having an oleaginous-external/aqueous-internal fluid on a surface thereof. Another example of a method of the present invention is a method of identifying an inverter fluid to use for inverting an oleaginous-external/aqueous-internal fluid in a subterranean formation.
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公开(公告)号：US07128142B2
公开(公告)日：2006-10-31
申请号：US11211975
申请日：2005-08-24
CPC分类号： C09K8/42
摘要： Apparatus and methods for determining suitable displacement fluids for use in subterranean cementing operations, and methods of cementing that use such displacement fluids, are provided. Examples of apparatus include apparatus for evaluating fluids. An example of a system is a system for inverting an oleaginous-external/aqueous-internal fluid in a well bore in a subterranean formation.
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公开(公告)号：USH1932H
公开(公告)日：2001-01-02
申请号：US09281719
申请日：1999-03-30
IPC分类号： E21B4700
CPC分类号： E21B33/13
摘要： An inverter fluid that intermixes with a non-aqueous (e.g., oil) external/aqueous internal fluid to cause external/internal inversion is designed. This includes testing a selected inverter fluid with a test fluid having a composition nominally equivalent to the composition of the non-aqueous external/aqueous internal fluid. A quantity of the designed inverter fluid is made and placed in the annulus of a well, such as an oil or gas well, to remove the non-aqueous external/aqueous internal fluid on at least a portion of one or more surfaces of the annulus. This can include pumping the inverter fluid along with a stream of cement. The inverter fluid displaces at least part of the non-aqueous external/aqueous internal fluid in the annular region and inverts the coating of non-aqueous external/aqueous internal fluid sufficient to remove the coating ahead of the cement. Determining a suitable inverter fluid comprises: measuring a parameter related to electrical conductivity of an initial mixture including (1) a test fluid having a composition nominally equivalent to the non-aqueous external/aqueous internal fluid and (2) part of a selected inverter fluid; and adding a further part of the selected inverter fluid to the initial mixture until the measured parameter indicates the external/internal phases of the test fluid have inverted.
摘要翻译： 设计了与非水（例如油）外部/水性内部流体混合以引起外部/内部反转的逆变器流体。 这包括用具有名义上等同于非水外部/水性内部流体的组成的组成的测试流体来测试所选择的逆变器流体。 将一定数量的设计的逆变流体制成并放置在诸如油井或气井之类的井的环形空间中，以在环形空间的一个或多个表面的至少一部分上移除非水的外部/水性内部流体 。 这可以包括泵送逆变器流体和水泥流。 逆变器流体使环形区域中的至少一部分非水性外部/水性内部流体移位，并使非水性外部/水性内部流体的涂层反转，足以移除水泥前方的涂层。 确定合适的逆变器流体包括：测量与初始混合物的电导率相关的参数，包括（1）具有名义上等同于非水性外部/水性内部流体的组成的试验流体和（2）选定的反应器流体的一部分 ; 并将所选择的逆变器流体的另一部分添加到初始混合物，直到所测量的参数指示测试流体的外部/内部相位反转为止。
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