DUAL OR TWIN-WELL COMPLETION WITH WETTABILITY ALTERATION FOR SEGREGATED OIL AND WATER PRODUCTION
    1.
    发明申请
    DUAL OR TWIN-WELL COMPLETION WITH WETTABILITY ALTERATION FOR SEGREGATED OIL AND WATER PRODUCTION 有权
    双重或双重完整的水泥生产和水分生产的湿度变化

    公开(公告)号:US20130025856A1

    公开(公告)日:2013-01-31

    申请号:US13191995

    申请日:2011-07-27

    IPC分类号: E21B43/14

    CPC分类号: E21B43/38 E21B43/385

    摘要: A well completion and related method are provided for formations susceptible to simultaneous production of oil and water. In one embodiment, two closely spaced, preferably horizontal wellbores are drilled from a single well into the reservoir. The reservoir rock surrounding one leg (typically the upper leg) is chemically treated to make it hydrophobic, whereas the reservoir rock surrounding the other leg is chemically treated to make it hydrophilic. Separate production tubing and a dual completion is installed in order to enable independent flow from each leg. Drawdown pressures in both legs are controlled to be sufficiently close to each other such that only oil flows into one leg and only water into the other. The water produced is re-injected downhole or brought to the surface.

    摘要翻译: 为易于同时生产油和水的地层提供完井和相关方法。 在一个实施例中,将两个紧密间隔的,优选水平的井筒从单井钻入储存器。 围绕一条腿(通常是大腿)的储层岩石被化学处理以使其疏水,而围绕另一条腿的储层岩石被化学处理以使其亲水。 安装独立的生产管道和双重完井,以实现每条腿的独立流动。 控制两条腿中的压降压力彼此足够接近,使得只有油流入一条腿并且只有水流入另一条腿。 产生的水重新注入井下或带到地面。

    Dual or twin-well completion with wettability alteration for segregated oil and water production
    2.
    发明授权
    Dual or twin-well completion with wettability alteration for segregated oil and water production 有权
    双重或双井完井,对于分离的油和水的生产,可以改善润湿性

    公开(公告)号:US09291046B2

    公开(公告)日:2016-03-22

    申请号:US13191995

    申请日:2011-07-27

    IPC分类号: E21B43/38

    CPC分类号: E21B43/38 E21B43/385

    摘要: A well completion and related method are provided for formations susceptible to simultaneous production of oil and water. In one embodiment, two closely spaced, preferably horizontal wellbores are drilled from a single well into the reservoir. The reservoir rock surrounding one leg (typically the upper leg) is chemically treated to make it hydrophobic, whereas the reservoir rock surrounding the other leg is chemically treated to make it hydrophilic. Separate production tubing and a dual completion is installed in order to enable independent flow from each leg. Drawdown pressures in both legs are controlled to be sufficiently close to each other such that only oil flows into one leg and only water into the other. The water produced is re-injected downhole or brought to the surface.

    摘要翻译: 为易于同时生产油和水的地层提供完井和相关方法。 在一个实施例中,将两个紧密间隔的,优选水平的井筒从单井钻入储存器。 围绕一条腿(通常是大腿)的储层岩石被化学处理以使其疏水,而围绕另一条腿的储层岩石被化学处理以使其亲水。 安装独立的生产管道和双重完井,以实现每条腿的独立流动。 控制两条腿中的压降压力彼此足够接近,使得只有油流入一条腿并且只有水流入另一条腿。 产生的水重新注入井下或带到地面。

    Method for determining pressure of earth formations
    4.
    发明授权
    Method for determining pressure of earth formations 有权
    确定地层压力的方法

    公开(公告)号:US07031841B2

    公开(公告)日:2006-04-18

    申请号:US10769014

    申请日:2004-01-30

    IPC分类号: E21B49/10

    CPC分类号: E21B47/06 E21B49/008

    摘要: A method for determining formation pressure at a depth region of formations surrounding a borehole, including: keeping track of the time since cessation of drilling at the depth region; deriving formation permeability at the depth region; causing wellbore pressure to vary periodically in time and determining, at the depth region, the periodic and non-periodic component of pressure measured in the formations; determining, using the time, the periodic component and the permeability, the formation pressure diffusivity and transmissibility and an estimate of the size of the pressure build-up zone around the wellbore at the depth region; determining, using the time, the formation pressure diffusivity and transmissibility, and the non-periodic component, the leak-off rate of the mudcake at the depth region; determining, using the leak-off rate, the pressure gradient at the depth region; and extrapolating, using the pressure gradient and the size of the build-up zone, to determine the formation pressure.

    摘要翻译: 一种用于确定钻孔周围地层深度区域的地层压力的方法,包括:跟踪在深度区域停止钻孔的时间; 在深度区域导出地层渗透率; 导致井筒压力在时间上周期性地变化,并且在深度区域确定在地层中测量的压力的周期性和非周期性分量; 使用时间确定周期分量和渗透率,地层压力扩散系数和透射率以及在深度区域周围井筒周围的压力积聚区的尺寸的估计; 使用时间确定地层压力扩散率和透射率以及非周期性分量,泥饼在深度区域的泄漏速率; 使用泄漏率来确定深度区域处的压力梯度; 并使用压力梯度和积聚区的尺寸进行外推,以确定地层压力。

    Measurement of a gas characteristic
    5.
    发明授权
    Measurement of a gas characteristic 失效
    气体特性的测量

    公开(公告)号:US5635626A

    公开(公告)日:1997-06-03

    申请号:US560647

    申请日:1995-11-20

    摘要: Apparatus to measure the calorific value and/or the Wobbe index of fuel gas supplied along a pipe. A control can operate two outlet valves and cause an inlet valve to be locked in a closed position or be unlocked to stay in a normally open state until the gas pressure in a chamber of predetermined volume reaches a preset pressure difference above the pressure in the pipe. Under direction of the control, a pump moves fuel gas from the pipe into the chamber whilst the outlet valves are closed. Once the pressure in the chamber attains the preset difference, the inlet valve closes automatically to be held locked closed by the control. Certain properties of the gas in the chamber, such as thermal conductivity, specific heat capacity and speed of sound, are measured and corrected to STP conditions. The pump moves two samples of gas into the chamber at two sequential times, each time until the gas pressure therein attains the preset value and the inlet valve again closes automatically in a locked position. Then 1 of 2 outlet valves is opened to allow gas from the chamber to discharge to the pipe through either an orifice place or a capillary passage. This discharge allows the control to measure the gas density or viscosity at STP, from which the calorific value and/or the Wobbe index of the gas is/are determined.

    摘要翻译: 用于测量沿着管道供应的燃料气体的热值和/或沃泊指数的装置。 控制器可以操作两个出口阀,并且使入口阀被锁定在关闭位置或被解锁以保持在常开状态,直到预定体积的室中的气体压力达到高于管道中的压力的​​预设压力差 。 在控制的方向下,泵将燃料气体从管道移动到室中,同时出口阀关闭。 一旦室内的压力达到预设差值,入口阀自动关闭,由控制器保持锁定。 室内气体的某些性质,如热导率,比热容和声速都被测量并校正到STP条件。 泵将两个气体样品两次连续地移动到室中,每次直到其中的气体压力达到预设值,并且入口阀在锁定位置再次自动关闭。 然后打开2个出口阀中的1个,以允许来自腔室的气体通过孔口位置或毛细管通道排出到管道。 该放电允许控制测量STP处的气体密度或粘度,从该气体密度或气体的Wobbe指数确定。

    Flame rectification detectors
    6.
    发明授权
    Flame rectification detectors 失效
    火焰整流检测器

    公开(公告)号:US4427363A

    公开(公告)日:1984-01-24

    申请号:US239201

    申请日:1981-03-03

    申请人: Paul S. Hammond

    发明人: Paul S. Hammond

    IPC分类号: F23N5/12 F23N5/00

    CPC分类号: F23N5/123 F23N2029/12

    摘要: A fail safe controller for a fuel burner has a rectifying probe positioned in the region occupied by the flame when it is burning normally. An alternating current power supply coupled to the probe is periodically interrupted by an inhibit circuit when the flame is burning. The intermittent rectified output from the probe controls the fuel supply by way of a diode pump circuit which ensures fail safe operation as it gives a null output for a steady state input.

    摘要翻译: 用于燃料燃烧器的故障安全控制器具有定位在火焰正常燃烧的区域内的整流探头。 当火焰燃烧时,耦合到探头的交流电源被禁止电路周期性地中断。 来自探头的间歇整流输出通过二极管泵电路控制燃料供应,确保故障安全运行,因为它为稳态输入提供零输出。

    Apparatus and method for the flow control of flue gas to combustion air
in a regenerative heating system
    9.
    发明授权
    Apparatus and method for the flow control of flue gas to combustion air in a regenerative heating system 失效
    在再生加热系统中烟气对燃烧空气的流量控制的装置和方法

    公开(公告)号:US4756688A

    公开(公告)日:1988-07-12

    申请号:US32570

    申请日:1987-04-01

    摘要: Apparatus is provided for the flow control of the flue gas to combustion air ratio in a reversible regenerative heating system of the type comprising a pair of regenerators, a first line 7 for supplying air to the regenerators, a second line 8 for removing flue gas from the regenerators, and valves 9,10 respectively for controlling the flow rate of air in the first line 7 and the flow rate of the flue gas in the second line 8. The apparatus comprises a third line 21 adapted to provide a slave flow of fluid proportional to the flow rate of the flue gas, thermistor type anemometers 17 and 18 for sensing the flow rates of combustion air and fluid and a ratio controller 24 for adjusting the flue gas damper valve 10 in accordance with the flow rates so sensed to maintain the ratio of the flue gas to combustion air at a predetermined ratio.

    摘要翻译: 提供了一种用于在可再生再生加热系统中的烟道气与燃烧空气比的流量控制的装置,该可逆再生加热系统包括一对再生器,用于向再生器供应空气的第一管线7,用于将烟道气从第 再生器和阀9,10分别用于控制第一管线7中的空气流量和第二管线8中烟气的流量。该设备包括第三管线21,其适于提供流体的从动流体 与烟道气的流量成比例,用于感测燃烧空气和流体的流量的热敏电阻式风速计17和18,以及用于根据所感测的流量调节烟气阻尼器阀10的比率控制器24,以维持 烟气与燃烧空气的比例为预定比例。