公开(公告)号：US5783822A

公开(公告)日：1998-07-21

申请号：US857845

申请日：1997-05-16

申请人： Ronnie J. Buchanan ,  Jiten Chatterji ,  James F. Heathman

发明人： Ronnie J. Buchanan ,  Jiten Chatterji ,  James F. Heathman

IPC分类号： C04B22/00 ,  C04B28/04 ,  C04B40/00 ,  C09K8/46 ,  E21B47/00 ,  E21B47/10 ,  G01V5/00 ,  G01V5/10

CPC分类号： C04B22/00 ,  C04B28/04 ,  C04B40/0096 ,  C09K8/46 ,  E21B47/0005 ,  E21B47/1015 ,  C04B2111/00862

摘要： The present invention provides improved traceable well cement compositions and methods. The compositions are basically comprised of hydraulic cement, sufficient water to form a pumpable slurry and a normally non-radioactive tracer compound which becomes radioactive and emits detectible rays over a relatively short time period when exposed to neutrons. The methods of the invention relate to cementing a zone in a well and subsequently detecting the subterranean location of the cement composition therein. A traceable well cement composition of the invention is formed and introduced into a subterranean zone to be cemented. Neutrons are then emitted from a source in the well so that the tracer compound emits detectible rays, the rays are detected and the location of the cement composition in the well is determined.

摘要翻译： 本发明提供改进的可追溯井水泥组合物和方法。 组合物基本上由水硬性水泥组成，足够的水形成可泵送的浆料和通常不放射性的示踪剂化合物，其在暴露于中子时在相当短的时间内变成放射性并发射可检测的射线。 本发明的方法涉及固井中的区域，随后检测其中的水泥组合物的地下位置。 形成本发明的可溯源的井水泥组合物并将其引入到要接合的地下区域中。 中子然后从井中的源发射，使得示踪剂化合物发射可检测的射线，检测射线并确定井中的水泥组合物的位置。

公开(公告)号：US5475727A

公开(公告)日：1995-12-12

申请号：US90446

申请日：1993-07-09

申请人： Ronnie J. Buchanan ,  Gilbert H. Forehand ,  Timothy D. Rice

发明人： Ronnie J. Buchanan ,  Gilbert H. Forehand ,  Timothy D. Rice

IPC分类号： G01T1/40 ,  G01N23/06

CPC分类号： G01T1/40

摘要： An intelligent automatic gain stabilization method and apparatus for a radiation detection instrument automatically locate the position of a predetermined characteristic within an energy spectrum, automatically determine whether the characteristic is properly located, and automatically provide gain adjustment to the output of the radiation detection instrument to maintain measurement accuracy of the system.

摘要翻译： 用于放射线检测仪器的智能自动增益稳定方法和装置自动地将能量谱内的预定特征的位置定位，自动确定特征是否正确定位，并且自动地向放射线检测仪器的输出提供增益调节以维持 系统的测量精度。

公开(公告)号：US6011346A

公开(公告)日：2000-01-04

申请号：US112867

申请日：1998-07-10

申请人： Ronnie J. Buchanan ,  Charles A. Butterfield, Jr.

发明人： Ronnie J. Buchanan ,  Charles A. Butterfield, Jr.

IPC分类号： E21B41/00 ,  H01L41/113 ,  H02N2/18 ,  H01L41/08

CPC分类号： H02N2/185 ,  E21B41/0085

摘要： Apparatus to generate electricity from energy in a flowing stream of fluid comprises a piezoelectric member and a flow restrictor connected with the member to cause portions of a flowing stream of fluid to flow past different sides of the member such that the member deforms to generate electricity in response thereto. A particular such apparatus includes a conduit to conduct a flowing stream of fluid; a divider disposed along at least a portion of the length of the conduit such that the divider divides that portion of the conduit into two flow channels; a piezoelectric member connected to the divider such that one side of the piezoelectric member is exposed to one of the two flow channels and another side of the piezoelectric member is exposed to the other of the two flow channels; and a flow restrictor disposed at a location between one end of the divider and the other end of the divider. A method comprises: dividing a flowing stream of fluid into two portions and conducting one of the portions along one side of a piezoelectric member and conducting the other of the portions along another side of the piezoelectric member; and restricting one of the portions of flowing fluid relative to the other of the portions of flowing fluid such that a pressure differential is created between the two portions and the piezoelectric member deforms in response to the pressure differential and thereby generates electricity.

摘要翻译： 在流动的流体流中从能量产生电力的设备包括压电构件和与该构件连接的限流器，以使流体流的一部分流过构件的不同侧面，使得构件变形以发电 回应。 一种特定的这样的设备包括用于传导流体流的导管; 分配器，沿着管道的长度的至少一部分设置，使得分隔器将导管的该部分分成两个流动通道; 压电元件连接到所述分隔器，使得所述压电元件的一侧暴露于所述两个流动通道中的一个，并且所述压电元件的另一侧暴露于所述两个流动通道中的另一个; 以及限流器，其设置在分隔器的一端和分隔器的另一端之间的位置处。 一种方法包括：将流动的流体流分成两部分，并且沿着压电元件的一侧传导一个部分，并且沿着压电元件的另一侧导电另一个部分; 并且相对于流动流体的另一部分限制流动流体的一部分，使得在两部分之间产生压差，并且压电部件响应于压差而变形，从而发电。

公开(公告)号：US5204527A

公开(公告)日：1993-04-20

申请号：US667927

申请日：1991-03-12

申请人： Ronnie J. Buchanan

发明人： Ronnie J. Buchanan

IPC分类号： G01T3/00 ,  G01V5/10

CPC分类号： G01V5/107 ,  G01T3/00

摘要： An apparatus and method utilize a neutron sensitive medium in which initially existing atoms of the medium are divided into particles, reaction energy and neutron energy. The medium undergoes polarization in response to the reaction energy and the neutron energy. This produces an electrical charge gradient which is proportional to the energies and which can be sensed and analyzed to indicate just the neutron energy.

摘要翻译： 一种装置和方法利用中子敏感介质，其中介质的最初存在的原子被分成颗粒，反应能和中子能。 介质响应于反应能和中子能而发生极化。 这产生与能量成比例的电荷梯度，并且可以感测和分析电荷梯度，以指示中子能量。

公开(公告)号：US4805407A

公开(公告)日：1989-02-21

申请号：US173011

申请日：1988-03-18

申请人： Ronnie J. Buchanan

发明人： Ronnie J. Buchanan

IPC分类号： E21B41/00 ,  F02G1/043 ,  F03G1/04

CPC分类号： F02G1/0435 ,  E21B41/0085 ,  F02G2243/02 ,  F02G2254/90 ,  F02G2280/10

摘要： A downhole tool for an oil or gas well includes a self-contained power supply having a housing in which a primary fuel source, a Stirling cycle engine, and a linear alternator are disposed. The primary fuel source includes a radioisotope which, by its radioactive decay, provides heat to operate the Stirling engine which in turn drives the liner alternator to provide a suitable electrical output for use by the circuit of the downhole tool.

摘要翻译： 用于油井或气井的井下工具包括具有壳体的独立电源，其中设置有主燃料源，斯特林循环发动机和线性交流发电机。 主燃料源包括放射性同位素，放射性同位素通过其放射性衰变来提供热量来操作斯特林发动机，该发动机又驱动衬套交流发电机以提供合适的电气输出，供井下工具的电路使用。

公开(公告)号：US5252832A

公开(公告)日：1993-10-12

申请号：US847507

申请日：1992-03-06

申请人： Philip D. Nguyen ,  Ronnie J. Buchanan ,  Jimmie D. Weaver

发明人： Philip D. Nguyen ,  Ronnie J. Buchanan ,  Jimmie D. Weaver

IPC分类号： E21B43/04 ,  E21B47/10 ,  G01N23/09 ,  G01N23/204 ,  G01N23/00

CPC分类号： E21B43/04 ,  E21B47/1015 ,  G01N23/09 ,  G01N23/204

摘要： A method of evaluating a gravel pack slurry uses a fast neutron source and a thermal neutron detector to produce responses from which gravel settling rate, packing efficiency, gravel concentration, porosity and density can be determined. The method can be applied to either static or dynamic slurries in either a laboratory test environment or an actual well environment.

公开(公告)号：US5083029A

公开(公告)日：1992-01-21

申请号：US650370

申请日：1991-02-04

申请人： Ronnie J. Buchanan

发明人： Ronnie J. Buchanan

IPC分类号： G01N23/204

CPC分类号： G01N23/204

摘要： A vessel for receiving a test sample of fluid whose water content is to be determined and a thermal neutron sensor are retained in cavities of a biological radioactivity shield. The cavities are lined with a material which blocks external thermal neutrons outside the test sample from being detected by the thermal neutron sensor. Another cavity, having an inner end terminated by the lining material, receives a source of fast neutrons which are to be emitted through the liner into the test sample to become thermal neutrons if they interact with hydrogen within the test sample. The latter thermal neutrons which are backscattered to the sensor are detected, and in response an electrical signal encoded to represent the count of detected thermal neutrons is generated to indicate a measure of the water content of the test sample.