公开(公告)号：US20150168590A1

公开(公告)日：2015-06-18

申请号：US14108234

申请日：2013-12-16

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： LUKE PERKINS

IPC: G01V5/10 ,  H01J27/04

CPC classification number: H01J27/04 ,  H01J27/024 ,  H05H3/06

Abstract: A radiation generator includes at least three extractor electrodes, with an ion source upstream of the at least three extractor electrodes to emit ions in a downstream direction toward the at least three extractor electrodes. There is a target downstream of the at least three extractor electrodes. The at least three extractor electrodes have independently selectable potentials so as to allow direction of an ion beam, formed from the ions, by the independently selectable potentials, toward different longitudinal and lateral regions of the target.

Abstract translation: 辐射发生器包括至少三个提取器电极，离子源在至少三个提取器电极的上游，以向下游方向朝向至少三个提取器电极发射离子。 在至少三个提取器电极的下游存在靶。 所述至少三个提取器电极具有独立的可选择电位，以便允许由离子形成的离子束通过独立可选择的电位朝向靶的不同纵向和横向区域的方向。

公开(公告)号：US20150168579A1

公开(公告)日：2015-06-18

申请号：US14108244

申请日：2013-12-16

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： LUKE PERKINS

IPC: G01V1/46 ,  H01J35/14

CPC classification number: G01V5/12 ,  H01J35/04 ,  H01J35/045 ,  H01J35/30

Abstract: A logging tool is for determining a property of a subsurface formation having a borehole therein and includes a housing to fit within the borehole. An x-ray generator is carried by the housing and includes at least three extractor electrodes, an electron emitter to emit electrons toward the extractor electrodes, and a target downstream of the extractor electrodes. The extractor electrodes have independently selectable potentials so as to allow direction of an electron beam, formed from the electrons emitted by the electron emitter, toward different longitudinal and lateral regions of the target, the target to emit x-rays into the subsurface formation when struck by the electron beam. A radiation detector is carried by the housing to detect incoming radiation resulting from interactions between the x-rays and the subsurface formation. Processing circuitry is coupled to the radiation detector to determine the property of the subsurface formation based upon detected incoming radiation.

Abstract translation: 测井工具用于确定其中具有钻孔的地下地层的特性，并且包括适合于钻孔内的壳体。 X射线发生器由壳体承载，并且包括至少三个提取器电极，向提取器电极发射电子的电子发射器，以及提取器电极下游的靶。 提取器电极具有可独立选择的电位，以允许由电子发射器发射的电子形成的电子束朝向目标的不同纵向和横向区域的方向，目标在被击打时将x射线发射到地下地层 通过电子束。 辐射检测器由壳体承载以检测由x射线和地下地层之间的相互作用产生的入射辐射。 处理电路耦合到辐射检测器，以基于检测到的入射辐射来确定地下地层的性质。