In situ measurement of gas content in formation fluid
    41.
    发明授权
    In situ measurement of gas content in formation fluid 失效
    原位测量地层流体中的气体含量

    公开(公告)号:US4370886A

    公开(公告)日:1983-02-01

    申请号:US248162

    申请日:1981-03-30

    IPC分类号: E21B47/06 E21B49/00 E21B49/10

    摘要: In situ measurement of the gas content of formation fluid using thermal expansion principles. The formation fluid from a wellbore source is passed through an expansion type valve into a test chamber. The temperature and pressure are measured upstream and downstream of the valve. The difference in the temperature measurement is an indicator of gas content in the formation fluid. Samples of the formation fluid can be taken on favorable indicators.

    摘要翻译: 使用热膨胀原理原位测量地层流体的气体含量。 来自井眼源的地层流体通过膨胀型阀进入测试室。 在阀的上游和下游测量温度和压力。 温度测量的差异是地层流体中气体含量的指标。 地层流体的样品可以采用有利的指标。

    Thermal neutron die away logging system with optimized gating
    42.
    发明授权
    Thermal neutron die away logging system with optimized gating 失效
    热中子通过优化浇口脱离测井系统

    公开(公告)号:US4122338A

    公开(公告)日:1978-10-24

    申请号:US809574

    申请日:1977-06-24

    IPC分类号: G01V5/10 G01V5/00

    CPC分类号: G01V5/102

    摘要: A system for measuring the thermal neutron lifetime of earth formations in the vicinity of a well borehole is disclosed. A downhole sonde is equipped with a pulsed neutron source, a thermal neutron or gamma ray detector and a pair of measurement electrodes. The measured salinity of the borehole fluid is used to optimize the delay time to the opening of measurement gating intervals for signals from the detector.

    摘要翻译: 公开了一种用于测量井眼附近的地层的热中子寿命的系统。 井下探测器配备有脉冲中子源,热中子或伽马射线探测器和一对测量电极。 井眼液体的测量盐度用于优化从检测器的信号开始测量门控间隔的延迟时间。

    Use of PNC tools to determine the depth and relative location of proppant in fractures and the near borehole region
    43.
    发明授权
    Use of PNC tools to determine the depth and relative location of proppant in fractures and the near borehole region 有权
    使用PNC工具来确定支撑剂在裂缝和近井眼区域的深度和相对位置

    公开(公告)号:US09038715B2

    公开(公告)日:2015-05-26

    申请号:US13461498

    申请日:2012-05-01

    摘要: Methods are provided for identifying the location and height of induced subterranean formation fractures and the presence of any associated frac-pack or gravel pack material in the vicinity of the borehole using pulsed neutron capture (PNC) logging tools. The proppant/sand used in the fracturing and packing processes is tagged with a thermal neutron absorbing material. When proppant is present, increases in detected PNC formation and/or borehole component cross-sections, combined with decreases in measured count rates, are used to determine the location of the formation fractures and the presence and percent fill of pack material in the borehole region. Changes in measured formation cross-sections relative to changes in other PNC parameters provide a relative indication of the proppant in fractures compared to that in the borehole region.

    摘要翻译: 提供了用于使用脉冲中子捕获(PNC)测井工具来识别诱发的地层岩石断裂的位置和高度以及在钻孔附近存在任何相关压裂填料或砾石填充材料的方法。 在压裂和包装过程中使用的支撑剂/砂用热中子吸收材料标记。 当支撑剂存在时,检测到的PNC形成和/或钻孔组分横截面的增加以及测量计数率的降低结合使用来确定地层断裂的位置以及在井眼区域中包装材料的存在和百分比填充 。 相对于其他PNC参数的变化,测量地层横截面的变化提供了与井眼区域相比,支撑剂在裂缝中的相对指示。

    Method of reservoir characterization and delineation based on observations of displacements at the earth's surface
    44.
    发明授权
    Method of reservoir characterization and delineation based on observations of displacements at the earth's surface 有权
    基于地球表面位移观测的储层表征和描绘方法

    公开(公告)号:US08355873B2

    公开(公告)日:2013-01-15

    申请号:US11288826

    申请日:2005-11-29

    IPC分类号: G01V9/00

    CPC分类号: G01V11/00

    摘要: Reservoir characterization based on observations of displacements at the earth's surface. One method of characterizing a reservoir includes the steps of: detecting a response of the reservoir to a stimulus, the stimulus causing a pressure change in the reservoir; and determining a characteristic of the reservoir from the response to the stimulus. The response may be the pressure change which varies periodically over time, or a set of displacements of a surface of the earth. In another example, a method includes the steps of: detecting a set of displacements of the earth's surface corresponding to a pressure change in the reservoir; and determining a characteristic of the reservoir from the surface displacements. In yet another example, a method includes the steps of: detecting a set of displacements of the earth's surface corresponding to a change in volume of the reservoir; and determining a characteristic of the reservoir from the surface displacements.

    摘要翻译: 基于地球表面位移观测的油藏特征。 表征储层的一种方法包括以下步骤:检测储层对刺激的响应,所述刺激导致储层中的压力变化; 以及从所述刺激的响应确定所述储层的特性。 响应可以是随时间周期性地变化的压力变化或地球表面的一组位移。 在另一示例中,一种方法包括以下步骤:检测对应于储层中的压力变化的地球表面的一组位移; 以及从表面位移确定储层的特征。 在又一示例中,一种方法包括以下步骤:检测对应于储层体积变化的地球表面的一组位移; 以及从表面位移确定储层的特征。

    Method of logging a well using a thermal neutron absorbing material
    45.
    发明授权
    Method of logging a well using a thermal neutron absorbing material 有权
    使用热中子吸收材料测井的方法

    公开(公告)号:US08100177B2

    公开(公告)日:2012-01-24

    申请号:US12358168

    申请日:2009-01-22

    IPC分类号: E21B47/00 G01V5/10

    CPC分类号: E21B43/26 G01V5/101 G01V5/107

    摘要: A method for determining the location and height of a fracture in a subterranean formation using a neutron emitting logging tool. The method includes obtaining a pre-fracture data set, fracturing the formation with a slurry that includes a proppant doped with a high thermal neutron capture cross-section material, obtaining a post-fracture data set, comparing the pre-fracture data set and the post-fracture data set to determine the location of the proppant, and correlating the location of the proppant to a depth measurement of the borehole to determine the location and height of the fracture. Using a pulsed neutron capture tool, it is also possible to determine whether the proppant is located in the fracture, in the borehole adjacent to the fracture, or in both. The method may also include a plurality of post-fracture logging procedures used to determine various fracture and production characteristics in the formation.

    摘要翻译: 一种使用中子发射测井工具确定地下地层断裂位置和高度的方法。 该方法包括获得裂缝前数据集,利用包含掺杂有高热中子俘获横截面材料的支撑剂的浆料压裂地层,获得断裂后数据集,比较裂缝前数据集和 断裂后数据集来确定支撑剂的位置,并将支撑剂的位置与钻孔的深度测量相关联,以确定裂缝的位置和高度。 使用脉冲中子捕获工具,还可以确定支撑剂是否位于裂缝中,邻近骨折的钻孔中,或两者中。 该方法还可以包括用于确定地层中各种断裂和生产特性的多个后裂缝测井程序。

    Separating mixtures of oil and water
    46.
    发明授权
    Separating mixtures of oil and water 失效
    分离油和水的混合物

    公开(公告)号:US07736518B2

    公开(公告)日:2010-06-15

    申请号:US11702857

    申请日:2007-02-06

    IPC分类号: B01D17/04

    CPC分类号: B01D17/042

    摘要: A cavitation device is used to heat and facilitation the separation of mixtures and emulsions of oil and water. Waste heat from the power source for the cavitation device may be utilized to elevate the temperature of incoming mixtures or emulsions. The heated mixture of emulsion is sent to a separation vessel where vapor may be removed and/or recovered, and where oil is removed as it separates into an identifiable layer. The separation vessel may be a flash tank.

    摘要翻译: 气蚀装置用于加热和促进油和水的混合物和乳液的分离。 来自气蚀装置的动力源的余热可用于提高进入的混合物或乳液的温度。 将加热的乳液混合物送入分离容器,其中可以除去和/或回收蒸气,并且当分离成可识别的层时将油除去。 分离容器可以是闪蒸罐。

    Method of radioactive well logging
    48.
    发明授权
    Method of radioactive well logging 失效
    放射性测井方法

    公开(公告)号:US4857729A

    公开(公告)日:1989-08-15

    申请号:US184742

    申请日:1988-04-22

    IPC分类号: E21B47/10

    CPC分类号: E21B47/1015

    摘要: A method of radioactive well logging for use in well operations wherein hydraulic fracturing material, including radioactive isotopes, is injected from a steel-cased well bore 31 into surrounding earth formations 33. Low energy gamma ray emitting radioisotopes are selected for tagging the liquids phase of the fracturing material and high energy gamma ray emitting radioisotopes are selected for tagging the solids phase. The relative amount of low energy radioisotope material inside the well bore 31 relative to the amount outside the casing 35 is determined to minimize the interfering effects of borehole tracers in determining concentrations of the high energy tracers in the formations. The procedure includes detecting the intensity of gamma radiation from the tracers in the borehole and surrounding formations by a detector 38 in the borehole in proximity to the injection zones and obtaining data representative of the radiation intensity. The intensity data is then separated into an observed energy spectrum from which is obtained observed energy spectrum count rates of gamma radiation in an energy region associated with gamma radiation emitted by the low energy tracer material in at least two relatively low energy ranges, a first P of which is highly sensitive to photoelectric attenuation by iron in the well casing and a second M of which is a higher energy range primarily sensitive to Compton scattered gamma rays and much less sensitive to photoelectric absorption by iron.These count rates are then combined to obtain an observed photoelectric ratio, R.sub.p =(M/P), of the low energy tracer. Count rates of radiation are then obtained in all the energy ranges associated with gamma radiation emitted by the low energy tracer to obtain the total elemental concentration of the low energy tracer in the borehole and the formations. The amount of the low energy tracer in the borehole Tr(Bor) relative to the amount of said low energy tracer outside the casing is determined by a relation involving the observed photoelectric ratio Ph Tr(Obs) of low energy tracer, the total observed concentration of the low energy tracer Tr(Tot), and the low energy photoelectric ratios, Ph Tr(Bor) and Ph Tr(For), calibrated for the tracer in the borehole and in the formation, respectively.

    Quantitative evaluation of uranium ore zones
    49.
    发明授权
    Quantitative evaluation of uranium ore zones 失效
    铀矿区定量评估

    公开(公告)号:US4698499A

    公开(公告)日:1987-10-06

    申请号:US832181

    申请日:1986-02-24

    IPC分类号: G01V5/06 G01V5/00

    CPC分类号: G01V5/06

    摘要: Uranium ore zones are quantitatively evaluated using the relative photoelectric absorption of naturally occurring gamma rays in two energy bands. One band experiences significant photoelectric absorption from uranium; the other does not. The ratio of the resultant measurements provides a quantitative indication of the uranium concentration.

    摘要翻译: 使用两个能带中天然存在的γ射线的相对光电吸收来定量评估铀矿带。 一个频带经历了铀的显着光电吸收; 另一个没有。 所得测量值的比率提供了铀浓度的定量指示。

    Method and apparatus for pulsed neutron capture measurement of borehole
conditions and formation hydrogen index
    50.
    发明授权
    Method and apparatus for pulsed neutron capture measurement of borehole conditions and formation hydrogen index 失效
    钻孔条件和地层氢指数的脉冲中子捕获测量方法和装置

    公开(公告)号:US4625111A

    公开(公告)日:1986-11-25

    申请号:US698045

    申请日:1985-02-04

    IPC分类号: G01V5/10

    CPC分类号: G01V5/102

    摘要: A method is disclosed for the simultaneous determination of borehole (11) and earth formation (20) thermal neutron decay time components. The method, which employs pulsed high energy neutron sources (21) and time gated detectors (23,24), furnishes several quality indicators, along with appropriate criteria for selecting which to use. The method also furnishes a new indicator for the borehole capture cross section.

    摘要翻译: 公开了用于同时确定井眼(11)和地球形成(20)热中子衰减时间分量的方法。 采用脉冲高能中子源(21)和时间门控检测器(23,24)的方法提供了几个质量指标,以及选择使用哪些标准的适当标准。 该方法还为钻孔捕获截面提供了一个新的指标。