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    • 6. 发明授权
    • Multi-lumen catheter with separate distal tips
    • 多腔导管带有独立的远端尖端
    • US07393339B2
    • 2008-07-01
    • US10371774
    • 2003-02-21
    • John A. ZawackiKelly B. PowersJohn G. EvansGuy Rome
    • John A. ZawackiKelly B. PowersJohn G. EvansGuy Rome
    • A61M3/00A61M37/00
    • A61M25/0026A61M1/3653A61M1/3659A61M1/3661A61M25/0009A61M25/007A61M25/0074A61M2025/0031A61M2025/0037
    • A multi-lumen catheter defined by at least two separate tip sections distal to a dividing point includes strategic placement of openings in the tip sections to facilitate fluid flow and minimize typical problems associated with catheters. In a multi-lumen catheter having tip sections with a releasably joined or splittable region, the bond strength between the tip sections is varied along their length such that an increasing separation force is required to separate the tip sections from one another distal to the dividing point. Delivery of a multi-lumen catheter is improved with respect to both sheathed and non-sheathed delivery methods, in which a friction reducing structure is provided on either the catheter, delivery sheath or both to provide a buffer for a sheathed delivery and in which a unique guidewire aperture or additional lumen is provided in at least one of the tip sections for a non-sheathed delivery.
    • 由远离分割点的至少两个分离的尖端部分限定的多腔导管包括在尖端部分中的开口的战略放置以便于流体流动并且最小化与导管相关联的典型问题。 在具有具有可释放地接合或可分开区域的末端部分的多腔导管中,末端部分之间的粘合强度沿其长度变化,使得需要增加的分离力以将尖端部分彼此远离分割点 。 相对于护套和非护套递送方法,多腔导管的输送得到改进,其中在导管,输送护套或两者上设置减摩结构以提供用于护套输送的缓冲器,其中 在至少一个尖端部分中提供独特的导丝孔或额外的内腔用于非护套输送。
    • 8. 发明申请
    • LANDING INDICATOR FOR LOGGING TOOLS
    • 用于登录工具的登陆指示器
    • US20140014329A1
    • 2014-01-16
    • US13545542
    • 2012-07-10
    • Steven R. RadfordJohn G. Evans
    • Steven R. RadfordJohn G. Evans
    • E21B47/00
    • E21B47/00E21B23/10E21B47/091
    • An apparatus for evaluating an earth formation intersected by a wellbore may include a logging tool conveyed into the wellbore through a drilling tubular, a landing indicator associated with the logging tool, and a sensor operatively associated with the logging tool. In use, the landing indicator generates a pressure pulse in the drilling tubular after contacting a travel restrictor positioned in the drilling tubular. After the logging tool is positioned at the target depth, the sensor makes at least one measurement while the logging tool is in the drilling tubular and provides an output indicative of a selected subsurface parameter.
    • 用于评估与井眼相交的地层的装置可以包括通过钻孔管道输送到井筒中的测井工具,与测井工具相关联的着陆指示器,以及与测井工具可操作地相关联的传感器。 在使用中,着陆指示器在与定位在钻井管中的行程限制器接触之后在钻管中产生压力脉冲。 在测井工具定位在目标深度之后,当测井工具在钻井管中时,传感器进行至少一次测量,并提供指示选定的地下参数的输出。