公开(公告)号：US5826662A

公开(公告)日：1998-10-27

申请号：US792744

申请日：1997-02-03

申请人： Harold K. Beck ,  Paul D. Ringgenberg ,  Roger L. Schultz ,  Rodney R. Setliff

发明人： Harold K. Beck ,  Paul D. Ringgenberg ,  Roger L. Schultz ,  Rodney R. Setliff

IPC分类号： E21B33/124 ,  E21B34/12 ,  E21B49/08 ,  E21B33/12

CPC分类号： E21B49/081 ,  E21B33/124 ,  E21B34/125

摘要： Method and apparatus for testing and sampling open-hole oil and gas wells. The apparatus includes a packer, a surge chamber, a closure valve which may be opened to flow fluid into the surge chamber, and a sampler. The surge chamber may be one of a pair of surge chambers, and the closure valve may be one of a pair of closure valves so that two surges may be carried out prior to obtaining a fluid sample in the sampler. In operation, the packer is placed in a set position by setting down weight. The closure valves are also actuated when weight is set down. The first closure valve has a first predetermined time delay before opening so that the packer may be set, and the second closure valve has a second predetermined time delay so that the packer may be set and the first closure valve opened before a fluid sample is captured. By opening a vent tool at an upper end of the uppermost surge chamber, formation fluid may be forced back into the formation or zone of interest by a bull-heading operation. In a preferred embodiment, portions of the apparatus are detachable in the event of sticking of the apparatus in the well. In the method of the two-surge test, a clean fluid sample for capturing in the sampler is provided. All of the steps are carried out without flowing fluid to the surface.

摘要翻译： 井眼油气井测试和取样方法和装置。 该装置包括封隔器，缓冲室，可打开以将流体流入缓冲室的闭合阀以及采样器。 缓冲室可以是一对缓冲室中的一个，并且闭合阀可以是一对闭合阀中的一个，使得在获取采样器中的流体样品之前可以执行两个浪涌。 在操作中，通过减轻重量将封隔器放置在设定位置。 当重量下降时，关闭阀也被启动。 第一关闭阀在打开之前具有第一预定的时间延迟，使得封隔器可以被设定，并且第二闭合阀具有第二预定时间延迟，使得封隔器可以被设定，并且在流体样品被捕获之前第一闭合阀打开 。 通过在最上面的缓冲室的上端打开排气工具，地层流体可以通过公牛运行而被迫回到地层或区域中。 在优选实施例中，在设备在井中粘附的情况下，装置的部分可拆卸。 在双浪试验的方法中，提供了用于在采样器中捕获的清洁的流体样品。 所有的步骤都是在没有流体流动到表面的情况下进行的。