公开(公告)号：US07669468B2

公开(公告)日：2010-03-02

申请号：US10539465

申请日：2003-11-21

Applicant: Peter Wraight ,  Roger Griffiths ,  Kenneth Stephenson

Inventor： Peter Wraight ,  Roger Griffiths ,  Kenneth Stephenson

IPC: G01N23/00

CPC classification number: E21B47/1015 ,  E21B47/0003 ,  E21B47/082

Abstract: The invention relates to methods and apparatus for determining downhole mud flow rates and other downhole parameters. A method for determining a downhole parameter includes operating a pulsed neutron generator (6), pulsing the pulsed neutron generator (6) off, detecting a substantially unactivated drilling fluid slug at a known distance (d) from the pulsed neutron generator (6), and determining a time-of-flight (t) for the unactivated drilling fluid slug to travel from the pulsed neutron generator (6) to a detection point.

Abstract translation: 本发明涉及用于确定井下泥浆流量和其它井下参数的方法和装置。 一种用于确定井下参数的方法包括操作脉冲中子发生器（6），使脉冲中子发生器（6）脉冲关闭，在脉冲中子发生器（6）的已知距离（d）处检测基本上未激活的钻井液段， 以及确定未激活的钻井液段从脉冲中子发生器（6）行进到检测点的飞行时间（t）。

公开(公告)号：US07639781B2

公开(公告)日：2009-12-29

申请号：US12016330

申请日：2008-01-18

Applicant: Rod Shampine ,  Joel L. Groves ,  Anthony Durkowski ,  Etienne Vallee ,  Peter Wraight

Inventor： Rod Shampine ,  Joel L. Groves ,  Anthony Durkowski ,  Etienne Vallee ,  Peter Wraight

IPC: G01B15/02 ,  H01J35/08 ,  G21K1/02 ,  G01V5/12

CPC classification number: G01N23/12 ,  G01N33/2823 ,  G21K1/10 ,  H01J35/18 ,  H01J2235/18

Abstract: An x-ray tool for determining a characteristic of an oilfield fluid. The tool may include a generator portion housing a collimator about a target from which x-rays are emitted. In this manner x-rays may be attenuated right at the target such that a majority of shielding otherwise necessary for safety concerns may be eliminated. Rather, by employing the target within the collimator, shielding of the generator may be limited to a single shielding plate within the generator portion that is positioned parallel to the target at the opposite end of an x-ray tube therebetween. As a result of this configuration, an x-ray tool for analysis of oilfield fluids may be provided with a minimum weight of shielding material. Thus, hand-held user friendly embodiments may be safely employed at the oilfield.

Abstract translation: 一种用于确定油田流体特性的x射线工具。 工具可以包括发射器部分，其围绕射线X射线的目标容纳准直器。 以这种方式，x射线可以在目标处正确地衰减，使得可能消除对于安全考虑而另外必需的大部分屏蔽。 相反，通过在准直器内采用目标，发生器的屏蔽可以被限制在发生器部分内与X射线管的相对端处的平行于靶的单个屏蔽板。 作为这种结构的结果，用于分析油田流体的X射线工具可以设置有最小重量的屏蔽材料。 因此，在油田可以安全地使用手持用户友好的实施例。

公开(公告)号：US20090225949A1

公开(公告)日：2009-09-10

申请号：US12468897

申请日：2009-05-20

Applicant: Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

Inventor： Peter Wraight ,  Arthur J. Becker ,  Joel L. Groves ,  Christian Stoller

IPC: G01B15/02 ,  H05G1/10

CPC classification number: H01J35/06 ,  H01J35/14 ,  H01J2235/0233 ,  H01J2235/06 ,  H01J2235/163 ,  H05G1/02 ,  H05G1/10

Abstract: An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.

Abstract translation: 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV以上能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器通过地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。

公开(公告)号：US20070291898A1

公开(公告)日：2007-12-20

申请号：US11425285

申请日：2006-06-20

Applicant: Joel Groves ,  Etienne Vallee ,  Peter Wraight

Inventor： Joel Groves ,  Etienne Vallee ,  Peter Wraight

IPC: G01N23/06 ,  G01F1/66

CPC classification number: G01N33/28 ,  A61B6/4241 ,  G01N23/06 ,  G01N33/2841 ,  G01N33/2847 ,  G01N2223/313 ,  G01N2223/635

Abstract: An apparatus and method for determining the phase fraction of a fluid collected downhole is shown comprising an x-ray generator, a filter, a sample cell, and a radiation detector. The filter produces a radiation spectrum with a high energy portion and a low energy portion. Filtered radiation is passed through a sample fluid and the resulting attenuated radiation signal is used in calculating the phase fractions of oil, water, and gas in the sample fluid. In one embodiment, a second reference radiation detector measures the radiation directly from the x-ray generator and this measurement is used in normalizing the fraction result. The ratio of the high energy signal to low energy signal of the reference detector is used in controlling the input voltage of the x-ray generator thus ensuring a stable spectrum.

Abstract translation: 显示用于确定在井下收集的流体的相分数的装置和方法，其包括x射线发生器，滤光器，样品池和放射线检测器。 滤光器产生具有高能量部分和低能量部分的辐射光谱。 过滤的辐射通过样品流体，并且所得减弱的辐射信号用于计算样品流体中油，水和气体的相分数。 在一个实施例中，第二参考辐射检测器直接从x射线发生器测量辐射，并且使用该测量来对分数结果进行归一化。 参考检测器的高能量信号与低能量信号的比率用于控制x射线发生器的输入电压，从而确保稳定的光谱。

公开(公告)号：US20060226351A1

公开(公告)日：2006-10-12

申请号：US11307630

申请日：2006-02-15

Applicant: Christian Stoller ,  Peter Wraight ,  Robert Adolph

Inventor： Christian Stoller ,  Peter Wraight ,  Robert Adolph

IPC: G01V5/10

CPC classification number: G01V5/104

Abstract: A tool for formation logging includes a support configured for movement in a borehole; a neutron source disposed on the support; a neutron monitor disposed on the support and configured to monitor an output of the neutron source; a gamma-ray detector disposed on the support and spaced apart from the neutron source; and a shielding material disposed between the gamma-ray detector and the neutron source.

Abstract translation: 用于地层测井的工具包括构造成在钻孔中移动的支撑件; 设置在支撑件上的中子源; 中子监视器，其设置在所述支撑件上并且被配置为监测所述中子源的输出; 设置在支撑件上并与中子源间隔开的伽马射线探测器; 以及设置在伽马射线检测器和中子源之间的屏蔽材料。

公开(公告)号：US20060180754A1

公开(公告)日：2006-08-17

申请号：US10547961

申请日：2004-03-03

Applicant: John Edwards ,  Christian Stoller ,  Peter Wraight ,  Roger Griffiths ,  Nicolas Renoux

Inventor： John Edwards ,  Christian Stoller ,  Peter Wraight ,  Roger Griffiths ,  Nicolas Renoux

IPC: G01V5/00

CPC classification number: E21B47/1015 ,  E21B2021/006

Abstract: The invention relates to methods and apparatus for determining a downhole parameter in an underbalanced drilling environment which include: selectively activating a first fluid flowing from the formation through a wellbore while under balanced drilled; detecting the activated first fluid; and determining a depth at which said fluid enters the wellbore.

Abstract translation: 本发明涉及用于确定欠平衡钻井环境中的井下参数的方法和装置，其包括：在平衡钻探的同时，选择性地激活从地层流过井眼的第一流体; 检测活化的第一流体; 以及确定所述流体进入所述井筒的深度。

公开(公告)号：US5107705A

公开(公告)日：1992-04-28

申请号：US502073

申请日：1990-03-30

Applicant: Peter Wraight ,  James C. Mayes ,  Jacques Orban

Inventor： Peter Wraight ,  James C. Mayes ,  Jacques Orban

IPC: E21B19/20 ,  E21B45/00 ,  E21B47/04

CPC classification number: E21B45/00 ,  E21B19/20 ,  E21B47/04

Abstract: Video systems and methods for determining the length of objects to be inserted in a wellbore, and for summing the lengths to obtain an accurate determination of the depth at which a bottomhole assembly is located at any given time. The video systems and methods of the present invention are also used in conjunction with hookload and traveling block location information to determine bottomhole assembly depth while drilling, or tripping-in or tripping out of a well. Also disclosed is a method of accurately determining the transition a drillstring undergoes and its associated movement when passing from in-slips to out-of-slips.

公开(公告)号：US09947426B2

公开(公告)日：2018-04-17

申请号：US13510255

申请日：2010-11-15

Applicant: Luke T. Perkins ,  Christian Stoller ,  Peter Wraight

Inventor： Luke T. Perkins ,  Christian Stoller ,  Peter Wraight

IPC: H05H3/06 ,  G21G4/02

CPC classification number: G21G4/02 ,  H05H3/06

Abstract: Disclosed is a radiation logging tool, comprising a tool housing; a compact generator that produces radiation; a power supply coupled to the compact generator; and control circuitry. Embodiments of the compact generator comprise a generator vacuum tube comprising a source generating charged particles, and a target onto which the charged particles are directed; and a high voltage supply comprising a high voltage multiplier ladder located laterally adjacent to the generator vacuum tube. The high voltage supply applies a high voltage between the source and the target to accelerate the charged particles to a predetermined energy level. The compact generator also includes an electrical coupling between an output of the high voltage supply and the target of the generator vacuum tube to accommodate the collocated positions of the generator vacuum tube and the high voltage power supply.

公开(公告)号：US09880295B2

公开(公告)日：2018-01-30

申请号：US14355762

申请日：2011-10-28

Applicant: Ken Stephenson ,  Peter Wraight ,  Wolfgang Ziegler ,  Christian Stoller ,  Irina Molodetsky ,  John J. Simonetti ,  Donna Simonetti

Inventor： Ken Stephenson ,  Peter Wraight ,  Wolfgang Ziegler ,  Christian Stoller ,  Irina Molodetsky ,  John J. Simonetti

IPC: G01T1/20 ,  G01T1/202 ,  G01V5/04 ,  H01J40/18

CPC classification number: G01T1/2023 ,  G01T1/2006 ,  G01V5/04 ,  H01J40/18

Abstract: A scintillator type radiation detector package is provided including a scintillation crystal directly coupled to the window of a photomultiplier. A scintillator package is also provided having a longer life at wellbore temperature with minimal deterioration of a hygroscopic scintillation crystal(s). Direct optical coupling of the scintillator to the photomultiplier reduces the amount of light lost at coupling interfaces and improved detection resolution over the conventional structures having separate packages for crystal and photomultiplier.

公开(公告)号：US09372277B2

公开(公告)日：2016-06-21

申请号：US12764814

申请日：2010-04-21

Applicant: Peter Wraight ,  James Thornton ,  Bradley A. Roscoe

Inventor： Peter Wraight ,  James Thornton ,  Bradley A. Roscoe

IPC: G01V5/10

CPC classification number: G01V5/107

Abstract: Systems and methods for neutron porosity well logging with high precision and reduced lithology effects are provided. In accordance with an embodiment, a downhole neutron porosity tool may include a neutron source, a neutron monitor, a neutron detector, and data processing circuitry. The neutron source may emit neutrons into a subterranean formation while the neutron monitor detects a count of neutrons proportional to the neutrons emitted. The neutron detector may detect a count of neutrons that scatters off the subterranean formation. The data processing circuitry may determine an environmentally corrected porosity of the subterranean formation based at least in part on the count rate of neutrons scattered off the subterranean formation normalized to the count rate of neutrons proportional to the neutrons emitted by the neutron source.

Abstract translation: 提供了具有高精度和降低岩性效应的中子孔隙测井的系统和方法。 根据实施例，井下中子孔隙度工具可以包括中子源，中子监测器，中子检测器和数据处理电路。 中子源可以将中子发射到地下地层，而中子监测器检测到与发射的中子成比例的中子数。 中子探测器可以检测到离开地下地层的中子数量。 数据处理电路可以至少部分地基于从地下地层散射的中子的计数率归一化为与中子发射的中子成比例的中子的计数率，来确定地下地层的环境校正的孔隙度。