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1. 发明授权

US08028563B2 Pressure interference testing for estimating hydraulic isolation 有权
标题翻译：用于估计液压隔离的压力干扰试验
公开(公告)号：US08028563B2
公开(公告)日：2011-10-04
申请号：US12651779
申请日：2010-01-04
申请人： Terizhandur S. Ramakrishnan , John Tombari
发明人： Terizhandur S. Ramakrishnan , John Tombari
IPC分类号： G01M3/02
CPC分类号： E21B47/0005 , E21B28/00 , E21B41/0064 , E21B47/1025 , E21B49/008 , E21B49/10 , G01V1/137 , Y02C10/14
摘要： A cased hole pressure test tool is used to determine the integrity of cement between two points in a borehole in terms of permeability or transmissibility. The test tool drills at least one probe hole through the casing up to the cement. In one embodiment, two probes are set and the dissipation of a pressure pulse through the cement initiated by the first probe is observed by the second probe. In another embodiment, one probe hole is in hydraulic communication with the borehole fluid and a single offset probe is set in another probe hole. Fluid (water) is then added to the borehole to cause a pressure increase in the borehole fluid. Detection of the pressure increase through the cement by the offset probe is indicative of a loss of hydraulic isolation. Packers may be used to isolate the portion of the borehole under test. A mechanism for generating a pressure pulse of known magnitude is also described.
摘要翻译：套管孔压力测试工具用于确定钻孔中两点之间的渗透性或透射性的水泥的完整性。测试工具将至少一个探针孔穿过套管钻到水泥上。在一个实施例中，设置两个探针，并且通过第二探针观察到通过由第一探针引发的水泥的压力脉冲的耗散。在另一个实施例中，一个探针孔与钻孔流体液压连通，并且单个偏移探针设置在另一个探针孔中。然后将流体（水）加入到钻孔中以引起井眼流体中的压力增加。通过偏移探测器检测通过水泥的压力增加表明液压隔离的损失。封隔器可用于隔离被测钻孔的部分。还描述了用于产生已知大小的压力脉冲的机构。

2. 发明授权

US07753118B2 Method and tool for evaluating fluid dynamic properties of a cement annulus surrounding a casing 有权
标题翻译：用于评估套管周围的水泥环的流体动力特性的方法和工具
公开(公告)号：US07753118B2
公开(公告)日：2010-07-13
申请号：US12180354
申请日：2008-07-25
申请人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
发明人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
IPC分类号： E21B47/00
CPC分类号： E21B47/0005
摘要： The permeability of the cement annulus surrounding a casing is measured by locating a tool inside the casing, placing a probe of the tool in hydraulic contact with the cement annulus, measuring the change of pressure in the probe over time, where the change in pressure over time is a function of among other things, the initial probe pressure, the formation pressure, and the permeability, and using the measured change over time to determine an estimated permeability. By drilling into the cement and making additional measurements of the change of pressure in the probe over time, a radial profile of the cement permeability can be generated.
摘要翻译：通过将工具定位在壳体内部，将工具的探针放置在与水泥环空隙液压接触的位置，测量探头随时间的压力变化，测量其周围的压力变化时间是初始探针压力，地层压力和渗透率之间的函数，并且使用测量的随时间的变化来确定估计的磁导率。通过钻入水泥并对随时间推移的探针中的压力变化进行额外的测量，可以产生水泥渗透性的径向轮廓。

3. 发明授权

US07665356B2 Pressure interference testing for estimating hydraulic isolation 失效
标题翻译：用于估计液压隔离的压力干扰试验
公开(公告)号：US07665356B2
公开(公告)日：2010-02-23
申请号：US11773175
申请日：2007-07-03
申请人： Terizhandur S. Ramakrishan , John Tombari
发明人： Terizhandur S. Ramakrishan , John Tombari
IPC分类号： E21B47/06
CPC分类号： E21B47/0005 , E21B28/00 , E21B41/0064 , E21B47/1025 , E21B49/008 , E21B49/10 , G01V1/137 , Y02C10/14
摘要： A cased hole pressure test tool is used to determine the integrity of cement between two points in a borehole in terms of permeability or transmissibility. The test tool drills at least one probe hole through the casing up to the cement. In one embodiment, two probes are set and the dissipation of a pressure pulse through the cement initiated by the first probe is observed by the second probe. In another embodiment, one probe hole is in hydraulic communication with the borehole fluid and a single offset probe is set in another probe hole. Fluid (water) is then added to the borehole to cause a pressure increase in the borehole fluid. Detection of the pressure increase through the cement by the offset probe is indicative of a loss of hydraulic isolation. Packers may be used to isolate the portion of the borehole under test. A mechanism for generating a pressure pulse of known magnitude is also described.
摘要翻译：套管孔压力测试工具用于确定钻孔中两点之间的渗透性或透射性的水泥的完整性。测试工具将至少一个探针孔穿过套管钻到水泥上。在一个实施例中，设置两个探针，并且通过第二探针观察到通过由第一探针引发的水泥的压力脉冲的耗散。在另一个实施例中，一个探针孔与钻孔流体液压连通，并且单个偏移探针设置在另一个探针孔中。然后将流体（水）加入到钻孔中以引起井眼流体中的压力增加。通过偏移探测器检测通过水泥的压力增加表明液压隔离的损失。封隔器可用于隔离被测钻孔的部分。还描述了用于产生已知大小的压力脉冲的机构。

4. 发明申请

US20090250208A1 Tool And Method For Evaluating Fluid Dynamic Properties Of A Cement Annulus Surrounding A Casing 有权
标题翻译：用于评估围绕套管的水泥环的流体动力学特性的工具和方法
公开(公告)号：US20090250208A1
公开(公告)日：2009-10-08
申请号：US12098041
申请日：2008-04-04
申请人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
发明人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
IPC分类号： E21B47/06
CPC分类号： E21B47/0005
摘要： The permeability of the cement annulus surrounding a casing is measured by locating a tool inside the casing, placing a probe of the tool in contact with the cement annulus, measuring the change of pressure in the probe over time, where the change in pressure over time is a function of among other things, the initial probe pressure, the formation pressure, and the permeability, and using the measured change over time to determine an estimated permeability. The estimated permeability is useful in determining whether carbon dioxide can be effectively sequestered in the formation below or at the depth of measurement without significant leakage through the cement annulus.
摘要翻译：通过将工具定位在壳体内部，将工具的探针放置在与水泥环面接触的位置，测量探头随时间变化的压力随时间的变化来测量壳体周围的水泥环的渗透性是初始探针压力，地层压力和渗透率之间的函数，并且使用测量的随时间的变化来确定估计的渗透率。估计的渗透率可用于确定二氧化碳是否可以有效地隔离在下方的地层或测量深度，而没有通过水泥环的显着泄漏。

5. 发明授权

US07753117B2 Tool and method for evaluating fluid dynamic properties of a cement annulus surrounding a casing 有权
标题翻译：用于评估套管周围水泥环的流体动力特性的工具和方法
公开(公告)号：US07753117B2
公开(公告)日：2010-07-13
申请号：US12098041
申请日：2008-04-04
申请人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
发明人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
IPC分类号： E21B47/00
CPC分类号： E21B47/0005
摘要： The permeability of the cement annulus surrounding a casing is measured by locating a tool inside the casing, placing a probe of the tool in contact with the cement annulus, measuring the change of pressure in the probe over time, where the change in pressure over time is a function of among other things, the initial probe pressure, the formation pressure, and the permeability, and using the measured change over time to determine an estimated permeability. The estimated permeability is useful in determining whether carbon dioxide can be effectively sequestered in the formation below or at the depth of measurement without significant leakage through the cement annulus.
摘要翻译：通过将工具定位在壳体内部，将工具的探针放置在与水泥环面接触的位置，测量探头随时间变化的压力随时间的变化来测量壳体周围的水泥环的渗透性是初始探针压力，地层压力和渗透率之间的函数，并且使用测量的随时间的变化来确定估计的渗透率。估计的渗透率可用于确定二氧化碳是否可以有效地隔离在下方的地层或测量深度，而没有通过水泥环的显着泄漏。

6. 发明申请

US20100101319A1 PRESSURE INTERFERENCE TESTING FOR ESTIMATING HYDRAULIC ISOLATION 有权
标题翻译：压力干扰测试用于估算液压隔离
公开(公告)号：US20100101319A1
公开(公告)日：2010-04-29
申请号：US12651779
申请日：2010-01-04
申请人： Terizhandur S. Ramakrishan , John Tombari
发明人： Terizhandur S. Ramakrishan , John Tombari
IPC分类号： E21B47/06
CPC分类号： E21B47/0005 , E21B28/00 , E21B41/0064 , E21B47/1025 , E21B49/008 , E21B49/10 , G01V1/137 , Y02C10/14
摘要： A cased hole pressure test tool is used to determine the integrity of cement between two points in a borehole in terms of permeability or transmissibility. The test tool drills at least one probe hole through the casing up to the cement. In one embodiment, two probes are set and the dissipation of a pressure pulse through the cement initiated by the first probe is observed by the second probe. In another embodiment, one probe hole is in hydraulic communication with the borehole fluid and a single offset probe is set in another probe hole. Fluid (water) is then added to the borehole to cause a pressure increase in the borehole fluid. Detection of the pressure increase through the cement by the offset probe is indicative of a loss of hydraulic isolation. Packers may be used to isolate the portion of the borehole under test. A mechanism for generating a pressure pulse of known magnitude is also described.
摘要翻译：套管孔压力测试工具用于确定钻孔中两点之间的渗透性或透射性的水泥的完整性。测试工具将至少一个探针孔穿过套管钻到水泥上。在一个实施例中，设置两个探针，并且通过第二探针观察到通过由第一探针引发的水泥的压力脉冲的耗散。在另一个实施例中，一个探针孔与钻孔流体液压连通，并且单个偏移探针设置在另一个探针孔中。然后将流体（水）加入到钻孔中以引起井眼流体中的压力增加。通过偏移探测器检测通过水泥的压力增加表明液压隔离的损失。封隔器可用于隔离被测钻孔的部分。还描述了用于产生已知大小的压力脉冲的机构。

7. 发明申请

US20090007651A1 PRESSURE INTERFERENCE TESTING FOR ESTIMATING HYDRAULIC ISOLATION 失效
标题翻译：压力干扰测试用于估算液压隔离
公开(公告)号：US20090007651A1
公开(公告)日：2009-01-08
申请号：US11773175
申请日：2007-07-03
申请人： Terizhandur S. Ramakrishan , John Tombari
发明人： Terizhandur S. Ramakrishan , John Tombari
IPC分类号： E21B47/00 , E21B44/00 , E21B47/06
CPC分类号： E21B47/0005 , E21B28/00 , E21B41/0064 , E21B47/1025 , E21B49/008 , E21B49/10 , G01V1/137 , Y02C10/14
摘要： A cased hole pressure test tool is used to determine the integrity of cement between two points in a borehole in terms of permeability or transmissibility. The test tool drills at least one probe hole through the casing up to the cement. In one embodiment, two probes are set and the dissipation of a pressure pulse through the cement initiated by the first probe is observed by the second probe. In another embodiment, one probe hole is in hydraulic communication with the borehole fluid and a single offset probe is set in another probe hole. Fluid (water) is then added to the borehole to cause a pressure increase in the borehole fluid. Detection of the pressure increase through the cement by the offset probe is indicative of a loss of hydraulic isolation. Packers may be used to isolate the portion of the borehole under test. A mechanism for generating a pressure pulse of known magnitude is also described.
摘要翻译：套管孔压力测试工具用于确定钻孔中两点之间的渗透性或透射性的水泥的完整性。测试工具将至少一个探针孔穿过套管钻到水泥上。在一个实施例中，设置两个探针，并且通过第二探针观察到通过由第一探针引发的水泥的压力脉冲的耗散。在另一个实施例中，一个探针孔与钻孔流体液压连通，并且单个偏移探针设置在另一个探针孔中。然后将流体（水）加入到钻孔中以引起井眼流体中的压力增加。通过偏移探测器检测通过水泥的压力增加表明液压隔离的损失。封隔器可用于隔离被测钻孔的部分。还描述了用于产生已知大小的压力脉冲的机构。

8. 发明申请

US20090250209A1 METHOD AND TOOL FOR EVALUATING FLUID DYNAMIC PROPERTIES OF A CEMENT ANNULUS SURROUNDING A CASING 有权
标题翻译：用于评估水泥环形流体流动性能的方法和工具
公开(公告)号：US20090250209A1
公开(公告)日：2009-10-08
申请号：US12180354
申请日：2008-07-25
申请人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
发明人： Terizhandur S. Ramakrishnan , Nikita V. Chugunov , Andrew Duguid , John Tombari
IPC分类号： E21B47/00
CPC分类号： E21B47/0005
摘要： The permeability of the cement annulus surrounding a casing is measured by locating a tool inside the casing, placing a probe of the tool in hydraulic contact with the cement annulus, measuring the change of pressure in the probe over time, where the change in pressure over time is a function of among other things, the initial probe pressure, the formation pressure, and the permeability, and using the measured change over time to determine an estimated permeability. By drilling into the cement and making additional measurements of the change of pressure in the probe over time, a radial profile of the cement permeability can be generated.
摘要翻译：通过将工具定位在壳体内部，将工具的探针放置在与水泥环空隙液压接触的位置，测量探头随时间的压力变化，测量其周围的压力变化时间是初始探针压力，地层压力和渗透率之间的函数，并且使用测量的随时间的变化来确定估计的磁导率。通过钻入水泥并对随时间推移的探针中的压力变化进行额外的测量，可以产生水泥渗透性的径向轮廓。

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