Coded electronic lock and key
    1.
    发明授权
    Coded electronic lock and key 失效
    编码电子锁和钥匙

    公开(公告)号:US4079356A

    公开(公告)日:1978-03-14

    申请号:US671805

    申请日:1976-03-30

    IPC分类号: G07C9/00 G07F7/08 H04Q3/00

    摘要: An electronic key comprises a first binary counter and a first multiplexeror pulse code modulating a uniform clock pulse train to produce a first coded pulse train modulated with a given code. The key is connected to an electronic lock comprising: a second binary counter and a second multiplexer for pulse code modulating the same clock pulse train to produce a second coded pulse train modulated with the same code; an EXCLUSIVE-OR gate to which said first and second multiplexers are connected; a first NAND gate having one input connected to the output of the EXCLUSIVE-OR gate; a flip-flop or a binary counter having its clock input connected to the output of the NAND gate and an inital logical ONE output connected to a second input of the NAND gate; a second NAND gate having one input connected to the output of the flip-flop or counter and another input connected to the output of the second multiplexer; and a binary output counter having its clock input connected to the output of the second NAND gate. The output of the lock is taken from one of the counting outputs of the output counter.

    摘要翻译: 电子钥匙包括第一二进制计数器和第一多路复用器,用于脉冲编码调制统一的时钟脉冲串,以产生用给定码调制的第一编码脉冲串。 钥匙连接到电子锁,包括:第二二进制计数器和第二多路复用器,用于脉冲编码调制相同的时钟脉冲串,以产生用相同代码调制的第二编码脉冲串; 所述第一和第二多路复用器连接到的独占或门; 第一NAND门,其具有连接到异或门的输出的一个输入; 触发器或二进制计数器,其时钟输入连接到NAND门的输出端,并且连接到NAND门的第二输入的初始逻辑1输出; 第二NAND门,其具有连接到触发器或计数器的输出的一个输入端,以及连接到第二多路复用器的输出端的另一输入端; 以及其时钟输入连接到第二NAND门的输出的二进制输出计数器。 锁定的输出取自输出计数器的计数输出之一。

    Method for reducing diameter reduction near ends of expanded tubulars
    3.
    发明授权
    Method for reducing diameter reduction near ends of expanded tubulars 有权
    用于减小膨胀管端部附近的直径减小的方法

    公开(公告)号:US07255176B2

    公开(公告)日:2007-08-14

    申请号:US10455466

    申请日:2003-06-05

    IPC分类号: E21B29/00

    CPC分类号: E21B43/106 E21B43/103

    摘要: A variety of approaches to reducing or eliminating “end effect” or the tendency of tubular ends to reduce in diameter after expansion are disclosed. Some involve pre-bending the ends outwardly while others involve removing material internally or/and externally near the ends. Yet other approaches feature weakening the ends in other ways including penetration of the tubular material using openings of various shapes including slots or/and holes where the openings are between the tube ends or where they can extend on one or both ends all the way to the end of the tubular. Inserts that are softer than the tube material can be placed near the ends. If there is an end effect, then the protruding material can be pushed out of the way or broken off.

    摘要翻译: 公开了减少或消除“终端效应”的各种方法或者扩张后管状端部直径减小的趋势。 一些涉及将端部向前弯曲,而另一些涉及在内部或/或外部在端部附近去除材料。 其他方法的特征是以其它方式削弱端部,包括使用各种形状的开口穿透管状材料,包括开口在管端之间的狭槽或/和孔,或者它们可以在一端或两端延伸到 管端。 比管材更软的插入件可以放置在端部附近。 如果有结束效应,则突出的材料可以被推出或断开。

    Flapper type safety valve for subterranean wells
    5.
    发明授权
    Flapper type safety valve for subterranean wells 失效
    用于地下井的挡板式安全阀

    公开(公告)号:US4457376A

    公开(公告)日:1984-07-03

    申请号:US378925

    申请日:1982-05-17

    IPC分类号: E21B34/00 E21B34/10 E21B34/14

    CPC分类号: E21B34/10 E21B2034/005

    摘要: The disclosure relates to an improved flapper type saftey valve and valve housing for use in subterranean wells wherein the flapper valve is actuated from a horizontal closed position to a vertical open position by contact with a downwardly moving actuating sleeve. The top surface of the valve is elevated so that the bottom edge of the actuating sleeve always contacts the flapper valve at a position spaced from the axis of the pivot mounting, thereby assuring that the opening force applied to the flapper valve has a maximum moment arm in order to overcome any fluid pressure differential existing across the flapper valve. The valve is mounted in an eccentic bore on an eccentric mounting base and fully opened flapper valve provides maximum flow area through the valve.

    摘要翻译: 本公开涉及一种用于地下井的改进的挡板式安全阀和阀壳体,其中挡板阀通过与向下移动的致动套筒接触而从水平关闭位置致动到垂直打开位置。 阀的上表面被升高,使得致动套筒的底部边缘在与枢转安装件的轴线间隔开的位置处始终接触挡板阀,从而确保施加到挡板阀的打开力具有最大力矩臂 以克服跨过挡板阀存在的任何流体压力差。 阀安装在偏心安装底座上的偏心孔中,完全打开的挡板阀通过阀门提供最大流动面积。

    One trip cemented expandable monobore liner system and method
    7.
    发明授权
    One trip cemented expandable monobore liner system and method 有权
    一次胶合可膨胀单柱内衬系统和方法

    公开(公告)号:US07708060B2

    公开(公告)日:2010-05-04

    申请号:US11348754

    申请日:2006-02-07

    IPC分类号: E21B34/06

    摘要: An apparatus to protect the mounting area of casing and a locating profile and optionally a sliding sleeve valve and a flow path from the outside of the valve to the annulus when subsequent attachment of an expanded liner is intended and the expanded liner is to be cemented in place. A barrier sleeve, nose, and outer sleeve define a sealed cavity having a loose incompressible material inside that covers the mounting location on the casing. A locating profile and an optional sliding sleeve valve and a flow path from the outside of the valve to the annulus can be provided. The cementing of the casing takes place through the barrier sleeve. After the cementing, the sleeve and nose are drilled out and the incompressible material is removed to the surface with the drill cuttings. A liner is inserted in the casing and is preferably expanded into sealing contact with the mounting location on the casing. After expansion a cement retainer positioned at the bottom of the expanded liner and the sliding sleeve located either above the mounting location of the liner in the casing shoe or in the liner below the mounted top section allow cement to be delivered outside the expanded liner and the displaced wellbore fluid to return into the casing through so that the liner can be cemented. The cement retainer can be delivered with either the liner or the expansion tools to allow expansion and cementing in a single trip. A shifting tool can be run on the expansion string to actuate the sliding sleeve and if necessary to allow for cement to be pumped from the drill string into the annulus through the sliding sleeve. The cement retainer can be milled out in a separate trip.

    摘要翻译: 一种用于保护壳体的安装区域和定位轮廓以及可选的滑动套筒阀以及从阀外部到环形空间的流动路径的装置,当随后附接膨胀衬套时,将膨胀衬套粘结在 地点。 阻挡套筒,鼻子和外套筒限定了密封腔体,其具有内部的松散的不可压缩材料,其覆盖壳体上的安装位置。 可以提供定位轮廓和可选的滑动套筒阀以及从阀外部到环空的流动路径。 外壳的固定通过隔离套筒进行。 固井后,钻出套筒和鼻子,用钻屑将不可压缩材料移至表面。 衬套插入到壳体中,并且优选地膨胀成与壳体上的安装位置密封接触。 在膨胀之后,位于膨胀衬垫底部的水泥保持器和位于套管鞋衬里的衬套的安装位置上方或安装的顶部部分下方的衬套中的滑动套管允许水泥被输送到膨胀衬套外部,并且 位移的井筒流体返回到壳体中,使得衬套可以胶合。 水泥保持器可与衬套或膨胀工具一起运输,以允许在单次行程中进行膨胀和固井。 可以在膨胀绳上运行换档工具来致动滑动套筒,并且如果需要允许水泥通过滑动套筒从钻柱泵送到环形空间中。 水泥保持器可以在单独的行程中铣出。

    One trip cemented expandable monobore liner system and method
    8.
    发明授权
    One trip cemented expandable monobore liner system and method 有权
    一次胶合可膨胀单柱内衬系统和方法

    公开(公告)号:US07458422B2

    公开(公告)日:2008-12-02

    申请号:US11349015

    申请日:2006-02-07

    IPC分类号: E21B43/10 E21B33/13

    摘要: A liner is inserted in the casing and is preferably expanded into sealing contact with the mounting location on the casing. After expansion a cement retainer positioned at the bottom of the expanded liner and the sliding sleeve located either above the mounting location of the liner in the casing shoe or in the liner below the mounted top section allow cement to be delivered outside the expanded liner and the displaced wellbore fluid to return into the casing through so that the liner can be cemented. The cement retainer can be delivered with either the liner or the expansion tools to allow expansion and cementing in a single trip. A shifting tool can be run on the expansion string to actuate the sliding sleeve and if necessary to allow for cement to be pumped from the drill string into the annulus through the sliding sleeve. The cement retainer can be milled out in a separate trip.

    摘要翻译: 衬套插入到壳体中,并且优选地膨胀成与壳体上的安装位置密封接触。 在膨胀之后,位于膨胀衬垫底部的水泥保持器和位于套管鞋衬里的衬套的安装位置上方或安装的顶部部分下方的衬套中的滑动套管允许水泥被输送到膨胀衬套外部,并且 位移的井筒流体返回到壳体中,使得衬套可以胶合。 水泥保持器可与衬套或膨胀工具一起运输,以允许在单次行程中进行膨胀和固井。 可以在膨胀绳上运行换档工具来致动滑动套筒,并且如果需要允许水泥通过滑动套筒从钻柱泵送到环形空间中。 水泥保持器可以在单独的行程中铣出。