公开(公告)号：US4856317A

公开(公告)日：1989-08-15

申请号：US189333

申请日：1988-05-02

申请人： John Pidorenko ,  Alan R. Hoffman ,  Robert F. Hodge ,  Wei-Min Wang

发明人： John Pidorenko ,  Alan R. Hoffman ,  Robert F. Hodge ,  Wei-Min Wang

IPC分类号： G01L27/00

CPC分类号： G01L27/002

摘要： A system and method for initializing and calibrating a fiber optic pressure transducer so that a measured intensity of light which varies as a function of pressure can be accurately translated to the value of pressure which produces that value of light intensity. The transducer includes an enclosed sensor tip having a diaphragm which is exposed to atmospheric pressure on the inside and the pressure to be determined on the outside as measurements are taken, the resulting pressure differential producing a related attenuation in light intensity. Calibration according to the present invention is performed by exposing the diaphragm to atmospheric pressure on the outside and sub-atmospheric pressure on the inside while transmitting light through the fiber in the usual manner. The sub-atmospheric pressure is changed gradually as simultaneous measurements are made of the intensity of light returned through the fiber and the actual value of the sub-atmospheric pressure at a number of discrete times. The paired values are stored in a look-up table which is subsequently used to determine unknown pressures from matched values of measured light intensity.

摘要翻译： 用于初始化和校准光纤压力传感器的系统和方法，使得可以将测量的作为压力函数变化的光强度转化为产生该光强值的压力值。 换能器包括封闭的传感器尖端，其具有在测量时暴露于内部的大气压力和要在外部确定的压力的隔膜，所得到的压力差产生光强度中的相关衰减。 根据本发明的校准是通过将隔膜暴露在外部的大气压力和内部的副大气压力下进行的，同时以通常的方式透过光纤。 随着同时测量通过光纤返回的光的强度和多个离散时间的次大气压力的实际值，副大气压逐渐变化。 成对值存储在查找表中，随后用于从测量的光强度的匹配值确定未知压力。

公开(公告)号：US09593559B2

公开(公告)日：2017-03-14

申请号：US14347552

申请日：2012-08-23

申请人： Charles S. Yeh ,  Tracy J. Moffett ,  Ted A. Long ,  Andrey A. Troshko ,  Michael D. Barry ,  Michael T. Hecker ,  David A. Howell ,  Annabel Green ,  Stephen McNamee ,  Rodney S. Royer ,  Robert F. Hodge ,  Peter Olenick ,  Henry Nguyen ,  William Barry Fisher

发明人： Charles S. Yeh ,  Tracy J. Moffett ,  Ted A. Long ,  Andrey A. Troshko ,  Michael D. Barry ,  Michael T. Hecker ,  David A. Howell ,  Annabel Green ,  Stephen McNamee ,  Rodney S. Royer ,  Robert F. Hodge ,  Peter Olenick ,  Henry Nguyen ,  William Barry Fisher

IPC分类号： E21B43/08 ,  E21B43/02 ,  E21B43/04 ,  E21B43/14

CPC分类号： E21B43/02 ,  E21B43/04 ,  E21B43/08 ,  E21B43/14

摘要： A sand control device for restricting flow of particles from a subsurface formation into a tubular body within a wellbore, the device being divided into compartments along its length, each compartment comprises a base pipe. The base pipe defines an elongated tubular body having a permeable section and an impermeable section within each compartment, also comprising a first filtering conduit and a second filtering conduit. The filtering conduits are arranged so that the first filtering conduit is adjacent to the non-permeable section of the base pipe, while the second filtering conduit is adjacent to the permeable section of the base pipe.

摘要翻译： 一种用于限制颗粒从地下地层流入井眼内的管状体的砂控制装置，该装置沿其长度被分成隔间，每个隔室包括基管。 基管限定细长的管状体，其具有可渗透部分和每个隔间内的不可渗透部分，还包括第一过滤管道和第二过滤管道。 过滤管道被布置成使得第一过滤管道与基管的不可渗透部分相邻，而第二过滤管道与基管的可渗透部分相邻。

公开(公告)号：US20140231083A1

公开(公告)日：2014-08-21

申请号：US14347552

申请日：2012-08-23

申请人： Charles S. Yeh ,  Tracy J. Moffett ,  Ted A. Long ,  Andrey A. Troshko ,  Michael D. Barry ,  Michael T. Hecker ,  David A. Howell ,  Annabel Green ,  Stephen McNamee ,  Rodney S. Royer ,  Robert F. Hodge ,  Peter Olenick ,  Henry Nguyen ,  William Barry Fisher

发明人： Charles S. Yeh ,  Tracy J. Moffett ,  Ted A. Long ,  Andrey A. Troshko ,  Michael D. Barry ,  Michael T. Hecker ,  David A. Howell ,  Annabel Green ,  Stephen McNamee ,  Rodney S. Royer ,  Robert F. Hodge ,  Peter Olenick ,  Henry Nguyen ,  William Barry Fisher

IPC分类号： E21B43/02

CPC分类号： E21B43/02 ,  E21B43/04 ,  E21B43/08 ,  E21B43/14

摘要： A sand control device for restricting flow of particles from a subsurface formation into a tubular body within a wellbore, the device being divided into compartments along its length, each compartment comprises a base pipe. The base pipe defines an elongated tubular body having a permeable section and an impermeable section within each compartment, also comprising a first filtering conduit and a second filtering conduit. The filtering conduits are arranged so that the first filtering conduit is adjacent to the non-permeable section of the base pipe, while the second filtering conduit is adjacent to the permeable section of the base pipe.

摘要翻译： 一种用于限制颗粒从地下地层流入井眼内的管状体的砂控制装置，该装置沿其长度被分成隔间，每个隔室包括基管。 基管限定细长的管状体，其具有可渗透部分和每个隔室内的不可渗透部分，还包括第一过滤管道和第二过滤管道。 过滤管道被布置成使得第一过滤管道与基管的不可渗透部分相邻，而第二过滤管道与基管的可渗透部分相邻。