公开(公告)号：US06397949B1

公开(公告)日：2002-06-04

申请号：US09378384

申请日：1999-08-20

申请人： David Joseph Walker ,  Dewayne Turner ,  William D. Henderson ,  Mike Ritter

发明人： David Joseph Walker ,  Dewayne Turner ,  William D. Henderson ,  Mike Ritter

IPC分类号： E21B3410

CPC分类号： E21B34/102

摘要： The present invention relates to a pressure actuated valve for use in well completion assemblies. The valve is operable by pressure between three configurations. In a first configuration, the valve is in a locked-closed configuration. In a second configuration, the valve remains closed but is unlocked. In a third configuration, the valve is open. Also disclosed is a method of installing and operating a three pressure actuated valve in a well completion operation.

摘要翻译： 本发明涉及一种用于完井组件的压力致动阀。 阀门可通过三种配置之间的压力进行操作。 在第一配置中，阀处于锁闭状态。 在第二配置中，阀保持关闭但是被解锁。 在第三种构造中，阀是打开的。 还公开了一种在完井操作中安装和操作三个压力致动阀的方法。

公开(公告)号：US09524463B2

公开(公告)日：2016-12-20

申请号：US13578297

申请日：2011-02-16

申请人： Christoph Johannes Meinrenken ,  Klaus S. Lackner ,  David Joseph Walker ,  Robert Christian ter Kuile

发明人： Christoph Johannes Meinrenken ,  Klaus S. Lackner ,  David Joseph Walker ,  Robert Christian ter Kuile

IPC分类号： G06N5/02 ,  G06Q10/00

CPC分类号： G06N5/02 ,  G06Q10/00 ,  Y02P90/84 ,  Y02P90/845

摘要： Methods and systems for automating carbon footprinting are disclosed. In some embodiments, the methods include a plurality of steps. In some embodiments, related to predetermined resources associated with an item from predetermined data sources is obtained. Then, estimated emission factors are calculated for each of the resourced. Next, a contributory uncertainty of the data and of the emission factors is determined. Then, a user is guided based on a comparison of the respective contributory uncertainty of data related to the resources or emission factors Next, both data related to the resources and the estimated emission factors of the resources are utilized to determine a carbon footprint of the item.

摘要翻译： 公开了用于自动化碳足迹的方法和系统。 在一些实施例中，所述方法包括多个步骤。 在一些实施例中，获得与来自预定数据源的项目相关联的预定资源相关的。 然后，为每个资源计算出估计的排放因子。 接下来，确定数据和排放因子的贡献不确定性。 然后，基于与资源或排放因子相关的数据的相应贡献不确定度的比较来指导用户。接下来，利用与资源相关的数据和资源的估计排放因子两者来确定项目的碳足迹 。

公开(公告)号：US06302208B1

公开(公告)日：2001-10-16

申请号：US09312102

申请日：1999-05-14

申请人： David Joseph Walker ,  William Mark Richards

发明人： David Joseph Walker ,  William Mark Richards

IPC分类号： E21B4304

CPC分类号： E21B34/06 ,  E21B34/063 ,  E21B34/12

摘要： An isolation system having: an isolation string, wherein the isolation string has a packing assembly which secures the isolation string in a wellbore casing, wherein the isolation string has a production screen which allows production fluid to pass into the isolation string; an isolation sleeve which slides within the isolation string between open and closed positions, wherein the open position allows fluid communication between the production screen and an interior portion of the isolation string and the closed position prevents fluid communication between the production screen and an interior portion of the isolation string, wherein the isolation sleeve comprises at least one isolation valve which is coupled within the isolation sleeve, wherein the at least one isolation valve is movable between open and closed positions; a locking device which locks and unlocks the isolation sleeve in an open position, wherein the locking device comprises a trigger that secures the isolation sleeve to the isolation string before the trigger is activated and releases the isolation sleeve from the isolation string after the trigger is activated, wherein the trigger comprises: a piston collar having a solid cylindrical portion attached to the isolation sleeve and a finger portion having at least one finger, wherein the at least one finger has a head at a distal end; and at least one recess in the isolation string, wherein the head of the at least one finger is engaged in the at least one recess; a cylindrically shaped pop lock positioned adjacent the head of the at least one finger so that the head is between the pop lock and the recess, wherein the pop lock secures the head relative to the recess; and a latch attached to the service tool which couples with the pop lock, wherein the trigger is activated by removing the pop lock from the position adjacent the head; and an activation tool which allows the isolation sleeve to move to a closed position, wherein the activation tool is a piston driven by a hydrostatic chamber which comprises lower pressure within the hydrostatic chamber than without, and wherein the piston moves the isolation sleeve from the open to the closed position.