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    • 3. 发明授权
    • Method and apparatus for obtaining subterranean fluid samples
    • 用于获得地下流体样品的方法和设备
    • US5137086A
    • 1992-08-11
    • US748671
    • 1991-08-22
    • Charles O. StokleyLawrence Sanford
    • Charles O. StokleyLawrence Sanford
    • E21B49/08
    • E21B49/082
    • Improved methods and apparatus are provided for obtaining multiple fluid samples from subterranean formations of interest. The present invention is particularly well suited for testing nuclear migration in ground water utilizing test wells surrounding a nuclear test site. A plurality of flow ports are provided in the casing each at a depth of a formation of interest, and a sliding sleeve is positioned over each port. A wireline tool is lowered to the selective depth, and downhole electric motor energized to power a pump and pass pressurized fluid to move a first dog radially outward. The downhole tool may be axially moved until the first dog locks into a groove provided in the casing. Fluid entering the casing is sealed above and below the sliding sleeve. Fluid pressure may then be applied to move a second dog radially outward to engage the sliding sleeve, and a control valve regulated to apply fluid pressure to axially move the sleeve and open the port. Entering fluid may be tested by a downhole tester, and a signal transmitted to the surface. If the fluid is determined to be representative of the downhole fluid to be tested, fluid is then passed to a chamber within the downhole tool so that it may subsequently be retrieved to the surface. The release of hydraulic pressure allows the dogs to disengage from the casing and the sliding sleeve, and the tool may be moved to another depth. Using the procedures of the present invention, multiple fluid samples may be reliably obtained at selected depths with a single wireline run, thereby substantially reducing costs.
    • 提供改进的方法和装置用于从感兴趣的地下地层获得多个流体样品。 本发明特别适用于利用围绕核试验场的测试井来测试地下水中的核移动。 多个流动端口在壳体中设置在感兴趣的形成深度处,并且滑动套筒位于每个端口上方。 有线工具降低到选择深度,并且井下电动机通电以为泵供电并通过加压流体以使第一个狗径向向外移动。 井下工具可以轴向移动,直到第一个狗锁定到设置在壳体中的凹槽中。 进入壳体的流体被密封在滑动套筒的上方和下方。 然后可以施加流体压力以将第二个狗径向向外移动以接合滑动套筒,并且控制阀被调节以施加流体压力以轴向移动套筒并打开端口。 输入流体可以通过井下测试仪进行测试,并将信号传输到表面。 如果流体被确定为代表要测试的井下流体,则流体然后被传递到井下工具中的室,使得其随后可以被回收到表面。 液压的释放允许狗脱离壳体和滑动套筒,并且工具可以移动到另一深度。 使用本发明的方法,可以在单个有线运行的情况下以选定的深度可靠地获得多个流体样品,从而大大降低成本。
    • 4. 发明授权
    • Multiple-set downhole tool and method
    • 多组井下工具及方法
    • US4893678A
    • 1990-01-16
    • US292235
    • 1988-12-30
    • Charles O. StokleyLawrence Sanford
    • Charles O. StokleyLawrence Sanford
    • E21B33/127
    • E21B34/14E21B33/127
    • A downhole tool is provided suitable for multiple setting and unsetting operations in a well bore during a single trip. The downhole tool is suspended in the wellbore from a tubing string, and is activated by dropping a metal ball which plugs the passageway through the tubing string, such that tubing pressure may thereafter be increased to activate the downhole tool. A sleeve is axially movable within a control sub from a ball stop position to a ball release position, and has a cylindrical-shaped interior surface with a diameter only slightly greater than the ball. Collet fingers carried on the sleeve are radially movable from an inward position to an outward position to stop or release the ball as a function of the axial position of the sleeve. Fluid flow through the tubing string is thus effectively blocked when the sleeve is in the ball stop position because of the close tolerance between the sleeve and the ball, while the ball is freely released from the sleeve and through the downhole tool when the sleeve is moved to the ball release position.
    • 提供了一种井下工具,适用于在单次行程期间在井眼中进行多次设定和拆卸操作。 井下工具从管柱悬挂在井筒中,并且通过滴下将通道堵塞通过油管柱的金属球来激活,使得此后可以增加管道压力以激活井下工具。 套筒可在从球停止位置到球释放位置的控制范围内轴向移动,并且具有直径仅略大于球的圆柱形内表面。 承载在套筒上的夹头可以从向内的位置径向移动到外部位置,以根据套筒的轴向位置来停止或释放球。 因此,当套筒处于球停止位置时,通过管柱的流体流动被有效地阻挡,因为套筒和球之间的紧密公差,而当套筒移动时球自由地从套筒释放并且通过井下工具 到球释放位置。
    • 5. 发明授权
    • Multiple-set packer and method
    • 多重封隔器和方法
    • US4823882A
    • 1989-04-25
    • US204087
    • 1988-06-08
    • Charles O. StokleyLawrence Sanford
    • Charles O. StokleyLawrence Sanford
    • E21B33/127E21B23/06
    • E21B33/127
    • A packer assembly is provided suitable for multiple setting and unsetting operations in a well bore during a single trip to seal the annulus between the interior walls of the well bore and a tubing string. Thge packer is set by dropping a metal ball which plugs the passageway through the tubing string, such that tubing pressure may thereafter be increased to inflate the packer. A sleeve is axially movable within a control sub from a ball stop position to a ball release position, and has a cylindrical-shaped interior surface with a diameter only slightly greater than the ball. Collet fingers carried on the sleeve are radially movable from an inward position to an outward position to stop or release the ball as a function of the axial position of the sleeve. Fluid flow through the tubing string is thus effectively blocked when the sleeve is in the ball stop position because of the close tolerance between the sleeve and the ball, while the ball is freely released from the sleeve and through the packer assembly when the sleeve is moved to the ball release position.
    • 提供的封隔器组件适于在单次行程期间在井眼中进行多次设定和拆卸操作,以密封井筒的内壁和管柱之间的环形空间。 通过滴下将通道塞过油管柱的金属球来设置燃烧封隔器,使得之后可以增加管道压力以使封隔器膨胀。 套筒可以在从球停止位置到球释放位置的控制范围内可轴向移动,并且具有直径仅略大于球的圆柱形内表面。 承载在套筒上的夹头可以从向内的位置径向移动到外部位置,以根据套筒的轴向位置来停止或释放球。 因此,当套筒处于球停止位置时,通过管柱的流体流动被有效地阻挡,因为套筒和球之间的紧密公差,而当套筒移动时球自由地从套筒释放并通过封隔器组件 到球释放位置。
    • 6. 发明授权
    • Packer assembly
    • 封隔器组件
    • US4648448A
    • 1987-03-10
    • US684006
    • 1984-12-20
    • Lawrence SanfordCharles O. StokleyEdwin C. Turner
    • Lawrence SanfordCharles O. StokleyEdwin C. Turner
    • E21B23/00E21B33/124E21B33/127
    • E21B23/006E21B33/1243E21B33/127
    • A downhole packer assembly includes a first packer tool with a flexible tubular packer body which is radially extendable by virtue of fluid pressure in a packer set chamber. A generally annular packer foundation, including an upper packer head, is connected to the upper end of the packer body. The tool defines a bypass flow system for permitting flow of fluid from the packer set chamber to a central longitudinal flowway of the assembly and from this central flowway to the exterior of the assembly. A control sub adjacent the packer foundation is movable with respect to the packer foundation between a first position, for opening the bypass system, and a second position, closing the bypass system. The control sub is preferably further operative, in its first position, to permit communication between the central flowway and the packer set chamber, and in its second position, to close the packer set chamber. A second packer tool is connected in tandem with the first tool. A ported cylinder is communicatively connected to the packer foundations generally below the locus of the control sub and has a piston reciprocably disposed therein and sealed with respect thereto, the piston being yieldably urged toward the control sub. A plug ejector may be adjoined to the upper packer head of the first tool and disposed therein but adapted to permit flow therethrough. The plug ejector has a free end extending upwardly and positioned for telescopic movement with respect to the lower end of the control sub as it moves between its inflation and set positions.
    • 井下封隔器组件包括具有柔性管状封隔器主体的第一封隔器工具,其通过封隔器组室中的流体压力可径向延伸。 包括上封隔头的一般环形封隔器基座连接到封隔器主体的上端。 该工具定义了旁通流系统,用于允许流体从封隔器组室流到组件的中心纵向流道并且从该中心流道流到组件的外部。 邻近封隔器基座的控制子部分可相对于封隔器基座在用于打开旁路系统的第一位置与闭合旁路系统的第二位置之间移动。 优选地,控制副在其第一位置进一步操作,以允许中心流道和封隔器组室之间的连通,并且在其第二位置关闭封隔器组室。 第二个封隔器工具与第一个工具串联连接。 移动式气缸与通常位于控制副轨迹下方的封隔器基座连通地连接,并且具有可往复地设置在其中并相对于其密封的活塞,活塞可靠地被推向控制副。 塞子喷射器可以与第一工具的上封隔器头部相邻并且设置在其中,但适于允许流过其中。 塞子喷射器具有向上延伸的自由端,并且定位成当其在其膨胀和设定位置之间移动时相对于控制子的下端伸缩运动。
    • 10. 发明授权
    • Inflatable packer with prestressed bladder
    • 具有预应力膀胱的充气包装机
    • US06752205B2
    • 2004-06-22
    • US10124662
    • 2002-04-17
    • Andrew KutacPaul A. ReinhardtDennis E. RoesslerCharles O. Stokley
    • Andrew KutacPaul A. ReinhardtDennis E. RoesslerCharles O. Stokley
    • E21B33127
    • E21B33/127
    • An improved inflatable packer 10 is provided having a pre-stretched bladder to minimize Z-folding. An expandable outer body 11 includes an inner elastomeric bladder layer 12, a reinforcement layer 14 which may include overlapping slats or cable, and an outer elastomer cover layer 16 which may cover only a portion of the reinforcement layer 14. The bladder 12 may expand non-uniformly due to the variations in the cross-section of the borehole 20, irregularities in construction of the bladder 12, and/or difference in resistance to expansion between the covered portion and the exposed portion of the reinforcement layer 14. An improved inflatable packer and method comprises pre-stretching the bladder 12 to keep the bladder in tension and minimize the occurrence of Z-folds.
    • 提供了一种改进的充气封隔器10,其具有预拉伸的囊以最小化Z-折叠。 可膨胀的外体11包括内部弹性体囊层12,可以包括重叠板条或电缆的加强层14以及可仅覆盖加强层14的一部分的外部弹性体覆盖层16.膀胱12可以膨胀, - 由于钻孔20的横截面的变化,气囊12的结构的不规则性和/或被覆部分和加强层14的暴露部分之间的膨胀阻力的差异,是均匀的。改进的充气封隔器 并且方法包括预拉伸膀胱12以保持膀胱张力并使Z折叠的发生最小化。