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1. 发明公开

EP1505252A1 Multimode acoustic imaging in cased wells 有权转让
标题翻译：波多黎各的多式联运公司Bilderzeugung
公开(公告)号：EP1505252A1
公开(公告)日：2005-02-09
申请号：EP03291990.4
申请日：2003-08-08
申请人： SERVICES PETROLIERS SCHLUMBERGER , Schlumberger Technology B.V. , SCHLUMBERGER HOLDINGS LIMITED
发明人： Froelich, Benoît , Le Calvez, Jean-Luc , Legendre, Emmanuel , Zeroug, Smaine
IPC分类号： E21B47/00 , G01V1/46
CPC分类号： G01V1/50 , E21B47/0005
摘要： A method and device for imaging a description of a zone behind a casing of a well uses a logging tool provided with a plurality of acoustic transducers. The casing is insonified with a first acoustic wave using a first acoustic transducer for transmitting among the plurality of acoustic transducers. The first acoustic wave has a first mode that may be any mode of a set of modes defined as follows: extensional mode, thickness mode, flexural mode. A first acoustic transducer for receiving is selected among the plurality of transducers, a first echo is received at the first acoustic transducer for receiving, and a first signal is produced. A first measurement is extracted from the first signal. The method further comprises insonifying the casing with a second acoustic wave using a second transducer for transmitting, operating in a second mode that may be any mode of the set of modes but is distinct from the first mode. A second echo is received at a selected second acoustic transducer for receiving and a second signal is produced. A second measurement is extracted from the second signal. The description of the zone behind the casing of the well is evaluated from a combination of the first measurement and the second measurement.
摘要翻译：用于对井的壳体后面的区域进行成像的成像方法和装置使用具有多个声换能器的测井工具。使用第一声换能器在第一声波之间对多个声换能器之间进行发送的外壳进行增强。第一声波具有第一模式，其可以是以下定义的一组模式的任何模式：延伸模式，厚度模式，弯曲模式。在多个换能器中选择用于接收的第一声学换能器，在第一声换能器处接收第一回波用于接收，并且产生第一信号。从第一信号中提取第一测量。所述方法还包括使用第二换能器对具有第二声波的壳体进行声音化，所述第二换能器用于以第二模式进行操作，所述第二模式可以是所述一组模式中的任何模式，但与第一模式不同。在所选择的第二声换能器处接收第二回波用于接收，并且产生第二信号。从第二信号中提取第二测量。从第一测量和第二测量的组合评估井的壳体后面的区域的描述。

2. 发明授权

EP1505252B1 Multimode acoustic imaging in cased wells 有权转让
标题翻译：在套管井中多式联运声学成像
公开(公告)号：EP1505252B1
公开(公告)日：2005-09-28
申请号：EP03291990.4
申请日：2003-08-08
申请人： SERVICES PETROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V. , SCHLUMBERGER HOLDINGS LIMITED
发明人： Froelich, Benoît , Le Calvez, Jean-Luc , Legendre, Emmanuel , Zeroug, Smaine
IPC分类号： E21B47/00 , G01V1/46
CPC分类号： G01V1/50 , E21B47/0005

3. 发明公开

EP3179277A1 RESONANCE-BASED INVERSION OF ACOUSTIC IMPEDANCE OF ANNULUS BEHIND CASING 有权
标题翻译：基于共振的环形背壳声阻抗反演
公开(公告)号：EP3179277A1
公开(公告)日：2017-06-14
申请号：EP15290308.4
申请日：2015-12-11
申请人： Services Pétroliers Schlumberger , Schlumberger Holdings Limited , SCHLUMBERGER TECHNOLOGY B.V.
发明人： Lemaranko, Mikhall , Klieber, Christoph , Thierry, Sylvain , Bose, Sandip , Zeroug, Smaine
IPC分类号： G01V1/50 , E21B47/00
CPC分类号： G01V1/306 , E21B47/0005 , E21B47/082 , G01V1/282 , G01V1/32 , G01V1/50 , G01V2210/6224 , G01V2210/6226 , G01V2210/677
摘要： Techniques involve obtaining acoustic data from an acoustic logging tool, where the acoustic data includes waves reflected from the casing, the annular fill material, the formation, and/or interfaces between any of the casing, the annular fill material, one or more interfaces between any of the mud, the casing, and the annular fill material. Techniques include normalizing the acoustic wave to result in a normalized wave having a comparable spectral shape with a reference wave, and comparing the normalized wave with the reference wave. The reference wave may be generated or modeled or produced from a look-up table or database, and may be estimated based on initial estimates of wellbore parameters. Based on the comparison of the normalized wave with the reference wave, a best-fit reference wave substantially matching the normalized wave may be identified. The best-fit reference wave may correspond with a thickness of the casing, an acoustic impedance of the annular fill material, and an acoustic impedance of mud.
摘要翻译：技术涉及从声学测井工具获取声学数据，其中声学数据包括从套管，环形填充材料，地层和/或壳体，环形填充材料中的任一个，以及环形填充材料之间的一个或多个界面任何泥浆，套管和环形填充材料。技术包括归一化声波以产生具有与参考波相当的光谱形状的归一化波，并将归一化波与参考波进行比较。参考波可以从查找表或数据库中生成或建模或生成，并且可以基于井筒参数的初始估计来估计。基于归一化波与参考波的比较，可以识别与归一化波基本匹配的最佳拟合参考波。最佳拟合参考波可以对应于壳体的厚度，环形填充材料的声学阻抗和泥浆的声学阻抗。

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