公开(公告)号：US20100327154A1

公开(公告)日：2010-12-30

申请号：US12492202

申请日：2009-06-26

申请人： John F. Vaeth ,  Charles F. Morris

发明人： John F. Vaeth ,  Charles F. Morris

IPC分类号： G01V5/10

CPC分类号： G01V5/107

摘要： A method for logging a subsurface formation includes acquiring neutron capture data using a pulsed neutron tool at a plurality of locations along a borehole penetrating the subsurface formation, wherein the plurality of locations include a formation zone that contains water; comparing an apparent water salinity or an apparent water sigma value estimated from the neutron capture data acquired in the formation zone that contains water with a water salinity or water sigma value of a water sample from the subsurface formation to produce a calibration parameter for the neutron capture data; and correcting the neutron capture data, based on the calibration parameter, to produce corrected neutron capture data. The method may further include determining a water saturation from the corrected neutron capture data.

摘要翻译： 用于记录地下地层的方法包括使用脉冲中子工具在穿过地下地层的钻孔的多个位置处获取中子捕获数据，其中多个位置包括含有水的地层区域; 比较从含有水的地层中获取的中子捕获数据估计的表观水盐度或表观水sigma值与来自地下地层的水样品的水盐度或水sigma值，以产生用于中子捕获的校准参数 数据; 以及基于校准参数校正中子捕获数据，以产生校正的中子捕获数据。 该方法还可以包括从校正的中子俘获数据确定水饱和度。

公开(公告)号：US08129673B2

公开(公告)日：2012-03-06

申请号：US12492202

申请日：2009-06-26

申请人： John F. Vaeth ,  Charles F. Morris

发明人： John F. Vaeth ,  Charles F. Morris

IPC分类号： G01V5/10

CPC分类号： G01V5/107

摘要： A method for logging a subsurface formation includes acquiring neutron capture data using a pulsed neutron tool at a plurality of locations along a borehole penetrating the subsurface formation, wherein the plurality of locations include a formation zone that contains water; comparing an apparent water salinity or an apparent water sigma value estimated from the neutron capture data acquired in the formation zone that contains water with a water salinity or water sigma value of a water sample from the subsurface formation to produce a calibration parameter for the neutron capture data; and correcting the neutron capture data, based on the calibration parameter, to produce corrected neutron capture data. The method may further include determining a water saturation from the corrected neutron capture data.

摘要翻译： 用于记录地下地层的方法包括使用脉冲中子工具在穿过地下地层的钻孔的多个位置处获取中子捕获数据，其中多个位置包括含有水的地层区域; 比较从含有水的地层中获取的中子捕获数据估计的表观水盐度或表观水sigma值与来自地下地层的水样品的水盐度或水sigma值，以产生用于中子捕获的校准参数 数据; 以及基于校准参数校正中子捕获数据，以产生校正的中子捕获数据。 该方法还可以包括从校正的中子俘获数据确定水饱和度。

公开(公告)号：US6005244A

公开(公告)日：1999-12-21

申请号：US942961

申请日：1997-10-02

申请人： John F. Vaeth ,  Charles W. Morris

发明人： John F. Vaeth ,  Charles W. Morris

IPC分类号： G01V5/10

CPC分类号： G01V5/101

摘要： A tool for use in analyzing a subsurface formation for the presence of hydrocarbon includes a neutron generator capable of generating a burst of neutrons at a high energy level, some of which will collide inelastically with atomic nuclei in the subsurface formation to produce inelastic gamma rays and then will be captured by atomic nuclei to produce capture gamma rays. The tool also includes at least one radiation detector to detect the inelastic and capture gamma rays, and counting circuitry configured to produce a count of detected inelastic gamma rays and a count of detected capture gamma rays. Processing circuitry in the tool generates a numerical output by dividing the count of inelastic gamma rays by the count of capture gamma rays and then provides the numerical output to an output device for use in analyzing the subsurface formation for the presence of hydrocarbon.

摘要翻译： 用于分析碳氢化合物存在的地下构造的工具包括能够以高能级产生中子爆发的中子发生器，其中一些中子将与地下地层中的原子核非弹性地碰撞以产生非弹性γ射线， 然后将被原子核捕获以产生捕获伽马射线。 该工具还包括至少一个辐射检测器以检测非弹性和捕获伽马射线，以及计数电路，其被配置为产生检测到的非弹性γ射线的计数和检测到的捕获伽马射线的计数。 工具中的处理电路通过将非弹性γ射线的计数除以捕获伽马射线的计数产生数值输出，然后将数值输出提供给输出装置，以用于分析烃的存在的地下地层。

公开(公告)号：US06675895B1

公开(公告)日：2004-01-13

申请号：US10209698

申请日：2002-07-31

申请人： Gamal Shehab ,  John F. Vaeth ,  Lucian K. Johnston

发明人： Gamal Shehab ,  John F. Vaeth ,  Lucian K. Johnston

IPC分类号： E21B3313

CPC分类号： E21B47/0005 ,  E21B33/13

摘要： The combination of the cement contamination laboratory measurements and the field log measurement allows to perform the evaluation of cement placement and quality related to the designed percentage cement displacement coverage and set-up times in the casing annulus. Since the logging time after the cement job is completed is known, a comparison between the acoustic impedance or compressive strength measured using the USI log and the acoustic impedance or the compressive strength measured in the laboratory, a level of mud contamination can be derived at every point across the wellbore. From the laboratory correlations, cement strength prediction with time can be established. This new product will give the operator an accurate tool to recommend performing remedial cementing with a higher success rate.

摘要翻译： 水泥污染实验室测量和现场测井测量的结合允许执行与设计的百分比水泥位移覆盖和套管环中的安装时间相关的水泥放置和质量的评估。 由于水泥作业完成后的测井时间是已知的，所以使用USI对数测得的声阻抗或抗压强度与实验室测得的声阻抗或抗压强度之间的比较可以在每个 指向井筒。 从实验室的相关性，可以确定随时间的水泥强度预测。 这种新产品将为操作人员提供一个准确的工具，建议以更高的成功率进行补救固井。

公开(公告)号：US06966376B2

公开(公告)日：2005-11-22

申请号：US10249307

申请日：2003-03-28

申请人： John F. Vaeth ,  Mark C. Duhon

发明人： John F. Vaeth ,  Mark C. Duhon

IPC分类号： C04B28/02 ,  C04B40/06 ,  C09K8/42 ,  E21B33/134

CPC分类号： C09K8/426 ,  C04B28/02 ,  C04B40/0666 ,  C04B22/066 ,  C04B24/2676 ,  C04B38/02 ,  C04B2103/12 ,  C04B2103/22 ,  C04B2103/408 ,  C04B2103/44

摘要： Disclosed is a method to increase the bonding forces of a hydraulic cement to a subterranean pipe (such as a casing) by the addition of at least one cementitious expansive agent to increase the bulk volume of the cement plug and a latex. The method includes positioning a platform in a downhole pipe below the desired cement plug interval, positioning a plug dump bailer tool comprising a chamber for cement slurry and a valve to discharge the cement slurry on and above the platform, and discharging the cement slurry. The cement slurry includes an expansive agent and latex to increase the shear-bond between the downhole pipe and the cement plug.

摘要翻译： 公开了一种通过添加至少一种水泥膨胀剂来增加水泥水泥到地下管（例如套管）的粘合力以增加水泥塞和胶乳的体积的方法。 该方法包括将井下管道中的平台定位在期望的水泥塞间隔之下的位置，定位包括用于水泥浆的腔室的塞子倾卸吊钩工具和用于将平台上的水泥浆排出并排出水泥浆料的阀。 水泥浆包括膨胀剂和胶乳，以增加井下管和水泥塞之间的剪切粘合。