公开(公告)号：WO2012064797A3

公开(公告)日：2012-08-16

申请号：PCT/US2011059858

申请日：2011-11-09

Applicant: SCHLUMBERGER CA LTD ,  SCHLUMBERGER SERVICES PETROL ,  SCHLUMBERGER HOLDINGS ,  SCHLUMBERGER TECHNOLOGY BV ,  PRAD RES & DEV LTD ,  TKABLADZE AVTO ,  EVANS MICHAEL ,  STEPHENSON KENNETH

Inventor： TKABLADZE AVTO ,  EVANS MICHAEL ,  STEPHENSON KENNETH

IPC: G01V5/14 ,  G01T3/00 ,  G21G4/02

CPC classification number: G01V5/107 ,  G01V5/104 ,  G01V5/105 ,  G01V5/108

Abstract: Systems, methods, and devices for determining neutron-gamma density (NGD) measurement of a subterranean formation that is accurate in both liquid- and gas-filled formations are provided. For example, a downhole tool for obtaining such an NGD measurement may include a neutron generator, neutron detector, two gamma-ray detectors, and data processing circuitry. Neutron generator may emit neutrons into a formation, causing a fast neutron cloud to form. Neutron detector may detect a count of neutrons representing the extent of the neutron cloud. Gamma-ray detectors may detect counts of inelastic gamma-rays caused by neutrons that inelastically scatter off the formation. Since the extent of the fast neutron cloud may vary depending on whether the formation is liquid- or gas-filled, data processing circuitry may determine the density of the formation based at least in part on the counts of inelastic gamma-rays normalized to the count of neutrons.

Abstract translation: 提供了用于确定地下地层的中子伽马密度（NGD）测量的系统，方法和设备，其在液体和气体填充地层中都是准确的。 例如，用于获得这种NGD测量的井下工具可以包括中子发生器，中子探测器，两个伽马射线探测器以及数据处理电路。 中子发生器可以将中子发射到地层中，从而形成快中子云。 中子探测器可以检测代表中子云范围的中子数。 伽玛射线探测器可以探测中子非弹性伽马射线的计数，这些非弹性伽马射线非弹性散射出地层。 由于快中子云的范围可以根据地层是液体还是气体填充而变化，所以数据处理电路可以至少部分地基于标准化为计数的非弹性伽马射线的计数来确定地层的密度 的中子。

公开(公告)号：GB2208546A

公开(公告)日：1989-04-05

申请号：GB8818795

申请日：1988-08-08

Applicant: STEPHENSON KENNETH

Inventor： STEPHENSON KENNETH

IPC: C12M1/34

Abstract: For detecting bacterial growth in liquid media, samples in cuvettes (20) located in wells (12) of a temperature- controlled block (10) are monitored by transmitting radiation e.g. light through each cuvette to receivers (14). The receiver outputs are sampled at intervals to detect changes. The samples are stirred using a free internal stirrer bar (22) and an external rotating magnetic field coupling thereto from a rotating bar (34) or from sequentially energised pole-pieces. The wells (12) are closed off by parts (24B, C) of caps (24) for closing (24A) the cuvettes.

公开(公告)号：WO2012050725A3

公开(公告)日：2012-08-16

申请号：PCT/US2011051669

申请日：2011-09-15

Applicant: SCHLUMBERGER TECHNOLOGY CORP ,  SCHLUMBERGER SERVICES PETROL ,  SCHLUMBERGER HOLDINGS ,  SCHLUMBERGER TECHNOLOGY BV ,  PRAD RES & DEV LTD ,  SIMON MATTHIEU ,  STEPHENSON KENNETH

Inventor： SIMON MATTHIEU ,  STEPHENSON KENNETH

IPC: E21B49/08 ,  G01V5/12 ,  H01J35/00

CPC classification number: G01V5/125 ,  G01T1/40

Abstract: Systems, methods, and devices relating to a sourceless X-ray downhole tool are provided. By way of example, such a downhole tool may include an X-ray generator, an X-ray detector, and data processing circuitry. The X-ray generator may emit some X-rays out of the downhole tool and some X-rays internally through the downhole tool. The X-ray detector may detect some of the X-rays that return to the downhole tool, as well as some of the X-rays that pass internally through the downhole tool. The data processing circuitry may gain-stabilize the X-ray detector based at least in part on the X-rays that passed internally through the downhole tool and were detected by the X-ray detector.

Abstract translation: 提供了与无源X射线井下工具相关的系统，方法和设备。 作为示例，这种井下工具可以包括X射线发生器，X射线检测器和数据处理电路。 X射线发生器可以通过井下工具在井下工具中发出一些X射线，并将内部的一些X射线射出。 X射线检测器可以检测返回到井下工具的一些X射线以及内部通过井下工具的一些X射线。 数据处理电路可以至少部分地基于通过井下工具内部通过的X射线并由X射线检测器检测X射线检测器来稳定X射线检测器。

公开(公告)号：US3891392A

公开(公告)日：1975-06-24

申请号：US32623373

申请日：1973-01-24

Applicant: BETTS PETER ALAN ,  STEPHENSON KENNETH

Inventor： BETTS PETER ALAN ,  STEPHENSON KENNETH

IPC: B01L3/00 ,  B01L3/02 ,  G01F13/00 ,  G01N1/10

CPC classification number: B01L3/561 ,  B01L3/021 ,  B01L3/0213 ,  Y10T436/2575

Abstract: A method of and device for maintaining a column of liquid comprising comprises a straight open-ended tube, and a plug of porous material frictionally located within the bore of the tube at a predetermined distance from one end of the tube. A column of liquid may be maintained within such a tube by placing the said one end of the tube in communication with a supply of liquid, and applying suction to the other end of the tube to draw a column of liquid into the tube to a level above the plug. The suction is then removed to allow the column of liquid to fall until its surface contacts the plug, whereupon the remaining column of liquid is maintained by interaction of the respective physical characteristics of the liquid, the plug, and the tube.

Abstract translation: 用于维持液体柱的方法和装置包括直管开口管和多孔材料塞，其摩擦地位于管的孔内，距管的一端预定距离。 通过将管的所述一端放置在与液体供应器连通的位置，将液体的柱保持在这种管内，并向管的另一端施加吸力以将一列液体引入管中 插头上方 然后抽吸抽吸以允许液体柱落下直到其表面接触塞子，于是剩余的液体柱通过液体，塞子和管子的相应物理特性的相互作用来维持。