Downhole separation of oil and water

    公开(公告)号:US20060144589A1

    公开(公告)日:2006-07-06

    申请号:US10537957

    申请日:2003-11-26

    CPC classification number: E21B43/385 E21B43/38

    Abstract: A well for producing oil from an underground formation, comprises a vertical section extending from the surface to a depth below the oil-producing formation; a sidetrack or perforated interval (production zone) extending from the vertical section into the oil-producing formation; and a valve, located in the well, and operable to prevent flow of fluid from the vertical section into the production zone and a valve to prevent flow of fluid from the portion below the production zone into the production zone or into the vertical section above the production zone. A method of producing oil from the well comprises allowing oil and water to flow into the well via the production zone until the hydrostatic pressure of the oil and water in the well balances the formation pressure of the oil-producing formation such that further flow into the well ceases; allowing the oil and water in the vertical section of the well to separate under gravity so as to produce (i) a lower layer of water, at least part of which is located in the part of the vertical section below the oil-producing formation, and (ii) an upper layer of oil having its upper surface below the well surface and its lower surface above the production zone; forcing the separated oil and water back down the well and operating the valve such that substantially no fluid is forced into the production zone, an water is forced into the underground formation below the oil-producing formation; and allowing oil and water flow to recommence from the production zone.

    METHODS AND APPARATUS FOR MICRO-IMAGING
    22.
    发明申请
    METHODS AND APPARATUS FOR MICRO-IMAGING 审中-公开
    用于微型成像的方法和装置

    公开(公告)号:US20100026998A1

    公开(公告)日:2010-02-04

    申请号:US12374706

    申请日:2007-07-19

    Applicant: Fadhel Rezgui

    Inventor: Fadhel Rezgui

    CPC classification number: E21B49/10 E21B47/0002

    Abstract: Apparatus and method for investigating underground formations surrounding a borehole, comprises: a drill bit (28); an optical probe (30) having substantially the same outer diameter as the drill bit; a drive mechanism (22), operable to cause the drill bit to drill a hole in the formation when the apparatus is in the borehole, and to advance the optical probe into the drilled hole; and an optical system (36), arranged such that when the optical probe is in the drilled hole, light from a light source (32) is directed into the optical probe, light entering the probe from the source is directed at the formation around the drilled hole, and light entering the probe from the formation around the drilled hole is directed to a detector.

    Abstract translation: 用于调查围绕钻孔的地下地层的装置和方法,包括:钻头(28); 光学探针(30),其具有与钻头基本相同的外径; 驱动机构(22),其可操作以当所述装置在所述钻孔中时使所述钻头钻孔,并且将所述光学探针推进到所述钻孔中; 以及光学系统(36),其布置成使得当光学探针在钻孔中时,来自光源(32)的光被引导到光学探针中,从源引入探针的光被引导到围绕 钻孔,并且从钻孔周围的地层进入探头的光被引导到检测器。

    Pumping system for oil wells
    24.
    发明授权
    Pumping system for oil wells 失效
    油井抽油系统

    公开(公告)号:US07258164B2

    公开(公告)日:2007-08-21

    申请号:US10517672

    申请日:2003-06-11

    CPC classification number: E21B43/128 E21B47/0007 E21B47/102 G01F1/58

    Abstract: A pumping system (13) for oil wells (1) comprises a pump (20) immersed at the bottom of the well (4) and a flow-meter (32) associated with the pump (20), the immersed pump (20) being supplied by an electric supply source (26). The flow-meter (32) is an electromagnetic flow-meter, also electrically supplied by the supply source (26) of the pump.

    Abstract translation: 用于油井(1)的泵送系统(13)包括浸没在井(4)的底部的泵(20)和与泵(20)相关联的流量计(32),浸入式泵(20) 由电源(26)供应。 流量计(32)是电磁流量计,也由泵的供应源(26)供电。

    Miniaturized Membrane and Shell for a Pressure Measuring Sensor
    25.
    发明申请
    Miniaturized Membrane and Shell for a Pressure Measuring Sensor 有权
    用于压力测量传感器的小型化膜和壳体

    公开(公告)号:US20070095128A1

    公开(公告)日:2007-05-03

    申请号:US11553522

    申请日:2006-10-27

    Applicant: Fadhel Rezgui

    Inventor: Fadhel Rezgui

    CPC classification number: G01L19/0645 G01L9/0083

    Abstract: Membrane (24) of a shell (20) of a pressure sensor, having an upper and lower chamber (34, 23), wherein the membrane is made by a support wall (36) and a cap (41) having an upper and lower sheets (31, 32), the support wall having a central aperture (33), the support wall separating but for its central aperture the lower from the upper chamber, the lower sheet (32) having a central aperture (38), edges of the central apertures (33, 38) of the support wall (36) and of the lower sheet (32) respectively being welded to one another, peripheries (37) of the upper and lower sheet (31, 32) being welded to one another so that a volume (40) is present between said upper and lower sheets (31, 32), said volume being in the upper chamber (34) and communicating through the central apertures (33, 38) of the support wall (36) and of the lower sheet (32) respectively, with the lower chamber (23).

    Abstract translation: 具有上部和下部腔室(34,23)的压力传感器的壳体(20)的膜片(24),其中所述膜片由支撑壁(36)和具有上部和下部 所述支撑壁具有中心孔(33),所述支撑壁分隔开,而对于其中心孔,所述支撑壁与所述上部腔室分开,所述下部片材(32)具有中心孔(38) 支撑壁(36)和下板(32)的中心孔(33,38)分别彼此焊接,上板和下板(31,32)的周边(37)彼此焊接 使得在所述上部和下部片材(31,32)之间存在体积(40),所述容积在所述上部腔室(34)中并且通过所述支撑壁(36)的中心孔(33,38)和 分别与下腔室(23)连接。

    Method of measuring pressure by means of a pressure gauge having a resonant element
    26.
    发明授权
    Method of measuring pressure by means of a pressure gauge having a resonant element 失效
    通过具有共振元件的压力计测量压力的方法

    公开(公告)号:US06615664B1

    公开(公告)日:2003-09-09

    申请号:US09958419

    申请日:2002-01-22

    CPC classification number: G01L9/002 G01L9/0019

    Abstract: The invention relates to a method of measuring pressure in which an evacuated capsule (1) containing a resonant element (5) is placed in the fluid whose pressure is to be measured, a vibration characteristic of the element is measured, and the pressure is deduced from said characteristic. A resonant element is used which, during measurement, is to be found in a stress state that is close to buckling. For this purpose, it is possible to use heater means for heating the element and servo-controlled so as to keep the frequency of vibration thereof constant. The resonant element can be made of silicon. The invention is particularly applicable to oil wells.

    Abstract translation: 本发明涉及一种测量压力的方法,其中将含有共振元件(5)的抽真空的胶囊(1)放置在要测量其压力的流体中,测量元件的振动特性,并推导出压力 从所述特征。 使用谐振元件,其在测量期间被发现在接近屈曲的应力状态。 为此,可以使用用于加热元件并进行伺服控制的加热器装置,以保持其振动频率恒定。 谐振元件可以由硅制成。 本发明特别适用于油井。

    Diaphragm pressure sensor including anti-stock protection means and
gradiomanometer incorporating such a sensor
    27.
    发明授权
    Diaphragm pressure sensor including anti-stock protection means and gradiomanometer incorporating such a sensor 失效
    隔膜压力传感器包括抗库存保护装置和结合了这种传感器的梯度计

    公开(公告)号:US5509312A

    公开(公告)日:1996-04-23

    申请号:US249122

    申请日:1994-05-25

    CPC classification number: G01L19/0609 G01L19/0618 G01N9/26

    Abstract: A pressure sensor (20) comprises a deformable diaphragm (22) which closes a fluid passage (18) in sealed manner. In order to protect the diaphragm (22) from shocks, the passage includes a restriction (44) whose dimensions are so designed as to limit the pressure peak applied to the diaphragm to a cutoff value which the diaphragm can withstand. The restriction (44) may be formed in a detachable capillary tube (42) or it may be in the form of grooves in a small silicon plate integrated in the active portion of the sensor.

    Abstract translation: 压力传感器(20)包括以密封方式封闭流体通道(18)的可变形隔膜(22)。 为了保护隔膜(22)免受冲击,通道包括限制(44),其尺寸被设计成将施加到隔膜上的压力峰值限制在隔膜能承受的截止值。 限制(44)可以形成在可分离的毛细管(42)中,或者它可以是集成在传感器的有效部分中的小硅板中的凹槽的形式。

    Electrical circuit such as a Wheatstone bridge with a
resistance-adjusting portion
    28.
    发明授权
    Electrical circuit such as a Wheatstone bridge with a resistance-adjusting portion 失效
    电路如具有电阻调节部分的惠斯通电桥

    公开(公告)号:US5309136A

    公开(公告)日:1994-05-03

    申请号:US918188

    申请日:1992-07-23

    CPC classification number: G01L1/2268 G01B7/20

    Abstract: An electrical circuit such as a Wheatstone bridge has a conductive strip extending between a current input terminal and a current output terminal and includes two resistors having a connecting part therebetween, a conductive segment extending between the connecting part and a measuring terminal, the connecting part being formed as a wider portion of the conductive strip in the direction of the conductive segment, the conductive segment having an adjusting portion between the connecting part and the measuring terminal.

    Abstract translation: 诸如惠斯通电桥的电路具有在电流输入端和电流输出端之间延伸的导电条,并且包括两个电阻,它们之间具有连接部分,在连接部分和测量端子之间延伸的导电部分,连接部分是 在导电段的方向上形成为导电带的较宽部分,导电段在连接部分和测量端之间具有调节部分。

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