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公开(公告)号：US07012545B2
公开(公告)日：2006-03-14
申请号：US10077052
申请日：2002-02-13
IPC分类号： G01V3/18
CPC分类号： G01V11/002
摘要： A method is provided for monitoring a well. In a described embodiment, the method uses annulus pressure to communicate between a downhole system and a remote location. The method may use intermittent electrical power generated by changes in annulus pressure to power the downhole system. Various sensors and well tools may be monitored and actuated by the downhole system, and acquired data may be transmitted to the remote location.
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公开(公告)号：US06457539B1
公开(公告)日：2002-10-01
申请号：US09982727
申请日：2001-10-18
申请人： Neal G. Skinner
发明人： Neal G. Skinner
IPC分类号： E21B4900
CPC分类号： E21B23/006 , E21B49/081
摘要： An early formation evaluation tool is provided which includes formation fluid sampling capabilities. In one embodiment, fluid pressure in a drill string in which the tool is interconnected is utilized to operate packers of the tool and to operate fluid samplers of the tool. To successively control actuation of the samplers, a ratchet mechanism responsive to altering fluid pressures in the drill string aligns a piercing member with a series of frangible pressure barriers associated with the samplers.
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公开(公告)号：US06355928B1
公开(公告)日：2002-03-12
申请号：US09282581
申请日：1999-03-31
IPC分类号： G01V800
CPC分类号： G01V8/02 , E21B47/102 , E21B49/08
摘要： This invention provides a method and an apparatus for fiber optic tomographic analysis and imaging of fluids. This invention includes a method for providing information on downhole fluid flowing in a hydrocarbon well, utilizing at least one downhole tomograph chamber (10). Light is introduced into the tomograph chamber (10) by an optical fiber bundle (24), and portions of the light are collected in other optical fiber bundles (32, 34). The collected portions of light are conveyed through the optical fiber bundles (32, 34) to a surface system (14), where the light is detected to produce signals proportional to the portions of light to provide information on optical properties of downhole fluid flowing in the well. This invention allows the generation of two or three dimensional images of multiple phase flow in the wellbore and allows determination of production parameters of multiple zones on an individual zone basis.
摘要翻译： 本发明提供一种用于光纤断层摄影分析和流体成像的方法和装置。 本发明包括利用至少一个井下断层摄影室（10）提供在烃井中流动的井下流体的信息的方法。 通过光纤束（24）将光引入断层摄影机室（10），部分光收集在其他光纤束（32,34）中。 所收集的光部分通过光纤束（32,34）传送到表面系统（14），其中检测到光以产生与光部分成比例的信号，以提供关于在 那个井 本发明允许在井眼中产生多相流的二维或三维图像，并且允许基于单个区域确定多个区域的生产参数。
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公开(公告)号：US06233746B1
公开(公告)日：2001-05-22
申请号：US09273818
申请日：1999-03-22
申请人： Neal G. Skinner
发明人： Neal G. Skinner
IPC分类号： G01J400
CPC分类号： G01L1/246 , E21B47/06 , E21B47/065 , E21B47/123 , G01D5/35383
摘要： An optic sensor for use in a well is provided. The sensor can be configured to sense downhole conditions, such as temperature, pressure, or stress, either individually or in combination. The optic sensor has a sensor housing that defines a chamber. The sensor housing also defines a region that is responsive to an external force. An optic fiber extends through the housing. The optic fiber has a dielectric boundary that resides within the housing chamber , and has a refractive index variation that provides maximum reflectivity at a central reflectivity wavelength, the central reflectivity wavelength correspondingly shifting with respect to an expansion or contraction of the region. In a further aspect of the invention, the optic fiber has a second dielectric boundary spaced apart from the first dielectric boundary. The second dielectric boundary is within the chamber and has a refractive index variation that provides maximum reflectivity at a central reflectivity wavelength sufficiently dissimilar to the first dielectric boundary. The second dielectric boundary floats in the cavity such that the second dielectric boundary is responsive to a temperature change within the sensor housing.
摘要翻译： 提供了一种用于井中的光学传感器。 传感器可以被配置为单独地或组合地感测井下条件，例如温度，压力或应力。 光学传感器具有限定腔室的传感器外壳。 传感器外壳还限定了响应于外力的区域。 光纤延伸穿过外壳。 该光纤具有驻留在壳体室内的介电边界，并且具有在中心反射率波长处提供最大反射率的折射率变化，中心反射率波长相对于该区域的膨胀或收缩相应地移动。 在本发明的另一方面，光纤具有与第一介电边界分开的第二介质边界。 第二电介质边界在室内并且具有在与第一介电边界充分不相似的中心反射率波长处提供最大反射率的折射率变化。 第二电介质边界浮在腔中，使得第二介电边界响应于传感器外壳内的温度变化。
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15.发明授权
公开(公告)号：US6109354A
公开(公告)日：2000-08-29
申请号：US265905
申请日：1999-03-10
CPC分类号： E21B23/006 , E21B34/10 , E21B34/102
摘要： A circulating valve and associated methods of servicing a well provide reliable operation, economical manufacture, and convenient maintenance in the circulating valve which is responsive to flow of fluid therethrough, and increased versatility in well servicing operations utilizing the valve. In a preferred embodiment, a circulating valve includes an upper case having a reverse circulating port formed radially therethrough, a circulating case having a circulating port formed radially therethrough, a lower adapter, a mandrel having a flow port formed radially therethrough, a biasing member, a ratchet, an inner sleeve, and a one-way flow restrictor carried on the mandrel. In an open configuration, fluid communication is permitted between the flow and circulating ports, and between the reverse circulating port and the flow restrictor. In a closed configuration, fluid communication is not permitted radially through the valve. A predetermined pressure differential across the mandrel is utilized to configure the valve in its open and closed configurations.
摘要翻译： 循环阀和维修井的相关方法提供循环阀的可靠操作，经济的制造和方便的维护，其响应于流体的流动，以及利用阀门的井服务操作的增加的多功能性。 在优选实施例中，循环阀包括具有径向穿过其形成的反向循环端口的上壳体，具有径向穿过其形成的循环口的循环壳体，下适配器，具有径向形成的流动口的心轴，偏置构件， 棘轮，内套筒和承载在心轴上的单向限流器。 在打开的配置中，允许在流动端口和循环端口之间以及反向循环端口和限流器之间进行流体连通。 在封闭结构中，通过阀不允许径向流体连通。 利用心轴上的预定压力差来配置阀门的开启和关闭结构。
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公开(公告)号：US5355960A
公开(公告)日：1994-10-18
申请号：US993260
申请日：1992-12-18
CPC分类号： E21B34/16 , E21B34/102
摘要： Methods of controlling a downhole tool in a well are disclosed wherein pressure change signals are introduced into a column of fluid standing in the well. The command signal includes at least one high level pressure change applied to the column of fluid. The high level pressure change includes a change from a first value to a second value, with the second value being at least about 1,000 psi above hydrostatic pressure of the column of fluid in the well, and with pressure being maintained at the second value for an interval of time corresponding to information stored in a control system of the downhole valve. A number of suitable command signal formats are disclosed, particularly including pressure drop signals.
摘要翻译： 公开了一种控制井中井下工具的方法，其中将压力变化信号引入到井中的流体柱中。 命令信号包括施加到流体列的至少一个高压变化。 高水平压力变化包括从第一值到第二值的变化，其中第二值比井中流体柱的静水压力至少大约1,000psi，并且压力保持在第二值 时间间隔对应于存储在井下阀控制系统中的信息。 公开了许多合适的命令信号格式，特别地包括压降信号。
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公开(公告)号：US5238070A
公开(公告)日：1993-08-24
申请号：US838373
申请日：1992-02-19
摘要： A differential pressure actuating system for downhole tools provides endless operation by the use of the differential pressure between two isolated zones of a well as a power source for the tool. That differential pressure is applied across a power transfer element to operate the downhole tool.
摘要翻译： 用于井下工具的差压致动系统通过使用井的两个隔离区之间的差压作为工具的动力源来提供无尽的操作。 该差压施加在动力传递元件上以操作井下工具。
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公开(公告)号：US10221677B2
公开(公告)日：2019-03-05
申请号：US13342652
申请日：2012-01-03
申请人： Neal G. Skinner
发明人： Neal G. Skinner
摘要： Purging of fiber optic conduits in subterranean wells. A downhole optical sensing system includes an optical line, at least two tubular conduits, one conduit being positioned within the other conduit, and the optical line being positioned within at least one of the conduits, and a purging medium flowed in one direction through one conduit, and flowed in an opposite direction between the conduits. A method of purging a downhole optical sensing system includes the steps of: installing at least two conduits and an optical line in a well as part of the sensing system, one conduit being positioned within the other conduit, and the optical line being positioned within at least one of the conduits; and flowing a purging medium through the conduits in the well, so that the purging medium flows in one direction through one conduit and in an opposite direction between the conduits.
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公开(公告)号：US09759031B2
公开(公告)日：2017-09-12
申请号：US14366067
申请日：2012-08-22
IPC分类号： E21B29/02 , E21B29/06 , E21B31/00 , E21B7/24 , E21B31/20 , E21B47/04 , E21B47/09 , E21B47/10 , E21B33/124
CPC分类号： E21B31/00 , E21B7/24 , E21B31/20 , E21B33/124 , E21B47/04 , E21B47/09 , E21B47/091 , E21B47/102
摘要： A method of freeing a pipe stuck in a subterranean well can include determining a location of a portion of the pipe stuck in the well, and penetrating and/or heating a sidewall of the pipe portion with a beam of light. A system for freeing a pipe stuck in a subterranean well can include a tool deployed into a portion of the pipe stuck in the well by a differential pressure from a wellbore to a formation penetrated by the wellbore. A beam of light emitted from the tool penetrates the pipe portion. Another method of freeing a pipe stuck in a subterranean well can include determining a location of a portion of the pipe which is biased against a wall of a wellbore by differential pressure, and directing a beam of light to the pipe portion.
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公开(公告)号：US08908266B2
公开(公告)日：2014-12-09
申请号：US13308816
申请日：2011-12-01
申请人： Neal G. Skinner
发明人： Neal G. Skinner
IPC分类号： H01S3/00
CPC分类号： E21B47/123
摘要： A method of delivering a desired relatively high optical power to a well tool in a subterranean well can include coupling to an optical waveguide an optical source which combines multiple optical frequency ranges, respective centers of the frequency ranges being separated by at least a peak shift frequency in a Raman gain spectrum for a corresponding pump wavelength generated by the optical source, and transmitting the desired optical power to the well tool via the optical waveguide positioned in the well. Another method of delivering optical power to a well tool in a subterranean well can include coupling to an optical waveguide an optical source, the optical source comprising a sufficient number of lasing elements to transmit the optical power, with the optical power being greater than a critical power for stimulated Brillouin scattering in the waveguide.
摘要翻译： 将期望的相对高的光功率递送到地下井中的井工具的方法可以包括将光束耦合到光波导，该光源组合多个光学频率范围，频率范围的相应中心至少分离峰值偏移频率 在用于由光源产生的相应泵浦波长的拉曼增益光谱中，并且经由位于阱中的光波导将期望的光功率传输到阱工具。 将光功率传递到地下井中的井工具的另一种方法可以包括将光源耦合到光波导，光源包括足够数量的激光元件以透射光功率，光功率大于临界 波导中受激布里渊散射的功率。
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