公开(公告)号：US4253530A

公开(公告)日：1981-03-03

申请号：US82848

申请日：1979-10-09

申请人： Martin J. Sharki ,  William A. Rehm ,  Woodrow E. Renfro

发明人： Martin J. Sharki ,  William A. Rehm ,  Woodrow E. Renfro

IPC分类号： E21B21/08 ,  E21B7/00 ,  E21B47/06

CPC分类号： E21B21/08

摘要： A gas bubble is circulated from a well by a system that maintains the well and bottom hole pressure substantially constant by progressively increasing the casing pressure as needed to maintain the drill pipe pressure substantially constant. An incrementally increasing casing pressure reference signal is produced by detecting each occurrence of the drill pipe pressure falling a predetermined amount below a drill pipe pressure reference signal. The casing pressure reference signal is compared with the actual casing pressure. A throttling valve is closed a corresponding amount if the acutal casing pressure is less than the casing pressure reference signal. The throttling valve is opened a corresponding amount if the actual casing pressure is greater than the casing pressure reference signal.

摘要翻译： 气体通过系统循环，该系统通过根据需要逐渐增加套管压力来维持井和井底压力基本上恒定，以保持钻杆压力基本上恒定。 通过检测钻杆压力在钻杆压力参考信号下方下降预定量的每次出现来产生递增增加的套管压力参考信号。 套管压力参考信号与实际套管压力进行比较。 如果食管套管压力小于套管压力参考信号，则节流阀关闭相应的量。 如果实际套管压力大于套管压力参考信号，则节流阀打开相应的量。

公开(公告)号：US4010012A

公开(公告)日：1977-03-01

申请号：US546249

申请日：1975-02-03

申请人： Phil H. Griffin, III ,  William A. Rehm ,  Martin L. Talley ,  Martin J. Sharki ,  Woodrow E. Renfro

发明人： Phil H. Griffin, III ,  William A. Rehm ,  Martin L. Talley ,  Martin J. Sharki ,  Woodrow E. Renfro

IPC分类号： B01D19/00 ,  E21B21/06

CPC分类号： B01D19/00 ,  B01D19/0068 ,  E21B21/067

摘要： A system is disclosed for removing gas from drilling mud without allowing the gas to escape to the atmosphere before the gas is treated to prevent contamination. The system includes a mud-gas separator vessel with a drilling mud inlet, means for maintaining a minimum mud level in said mud-gas separator vessel, a separator vessel gas outlet, and a separator vessel drilling mud outlet. A degassing means includes a drilling mud inlet located in a position higher than said minimum mud level. Enclosed conduit means connects the separator vessel drilling mud outlet to said degassing means drilling mud inlet.

摘要翻译： 公开了一种用于从钻井泥浆中除去气体的系统，而不允许气体在气体被处理之前逃逸到大气中以防止污染。 该系统包括具有钻井泥浆入口的泥浆 - 气体分离器容器，用于在所述泥浆 - 气体分离器容器中保持最小泥浆水平的装置，分离器容器气体出口和分离器容器钻井泥浆出口。 脱气装置包括位于高于所述最小泥浆水平的位置的钻井泥浆入口。 封闭的管道装置将分离器容器钻井泥浆出口连接到所述脱气装置钻井泥浆入口。