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    • 3. 发明授权
    • System and method for drilling a subsea well
    • 钻井海底井的系统和方法
    • US08978774B2
    • 2015-03-17
    • US13508579
    • 2010-11-10
    • Borre FossliSigbjorn Sangesland
    • Borre FossliSigbjorn Sangesland
    • E21B33/06E21B21/08E21B21/00E21B43/38
    • E21B21/08E21B21/001E21B43/38
    • A subsea mud pump can be used to return heavy drilling fluid to the surface. In order to provide a less stringent requirement for such a pump and to better manage the bottom hole pressure in the case of a gas kick or well control event, the gas should be separated from the drilling fluid before the drilling fluid enters the subsea mud pump and the pressure within the separating chamber. The mud pump suction should be controlled and kept equal or lower than the ambient seawater pressure. This can be achieved within the cavities of the subsea BOP by a system arrangement and methods explained. This function can be used with or without a drilling riser connecting the subsea BOP to a drilling unit above the body of water.
    • 海底泥浆泵可用于将重型钻井液返回到地面。 为了对这种泵提供不太严格的要求,并且在气体踢或井控制事件的情况下更好地管理井底压力,在钻井液进入海底泥浆泵之前,气体应与钻井液分离 和分离室内的压力。 泥浆泵的吸力应受到控制,保持在等于或低于环境海水压力。 这可以通过系统布置和方法说明在海底BOP的空腔内实现。 该功能可用于或不使用将海底BOP连接到水体上方的钻井单元的钻井立管。
    • 5. 发明授权
    • Method and arrangement for removing soils, particles or fluids from the seabed or from great sea depths
    • 从海底或海底深处除去土壤,颗粒或液体的方法和布置
    • US07950463B2
    • 2011-05-31
    • US12419446
    • 2009-04-07
    • Borre Fossli
    • Borre Fossli
    • E21B29/12E02F3/88
    • E21B7/12E21B7/20E21B21/001E21B21/08E21C45/00
    • A method for removing soils, particles or fluids from the seabed or from great sea depths, includes positioning a platform or a vessel above an offshore location, lowering a riser from the vessel or platform to the seabed or great depth, the riser being vented to the atmosphere, sucking soils, particles or fluids with inflow of fluid into the riser and removing them from the riser via an outlet in the riser, the outlet being at a level well below the water surface, by use of a pumping system with a flow return conduit running to a selected location, while keeping the level of the fluid in the riser at a level between the outlet and the surface corresponding with a pressure in the lower end of the riser substantially lower than the sea water pressure at the end of the riser.
    • 一种用于从海底或大海深处除去土壤,颗粒或流体的方法包括将平台或船只定位在海上位置之上,将提升管从船舶或平台降低到海床或大深度,将提升管排放到 大气,吸入污垢,颗粒或流体,流体进入提升管,并通过提升管中的出口将其从提升管中排出,出口处于远低于水面的水平面上,通过使用具有流动的泵送系统 回流管道运行到选定的位置,同时将提升管中的流体水平保持在出口和表面之间的水平面上,对应于提升管的下端中的压力基本上低于在末端的海水压力 冒口
    • 7. 发明授权
    • Method and arrangement for performing drilling operations
    • 执行钻井作业的方法和装置
    • US07513310B2
    • 2009-04-07
    • US10549059
    • 2004-03-12
    • Borre Fossli
    • Borre Fossli
    • E21B29/12
    • E21B21/001E21B7/12E21B7/20E21B21/08
    • An arrangement and a method to control and regulate the bottom hole pressure in a well during subsea drilling at deep waters: The method involves adjustment of a liquid/air interface level in a drilling riser. The arrangement comprises a drilling riser with an outlet at a depth below the water surface. The outlet is connected to a subsea pumping system with a flow return conduit back to a drilling vessel. The intention of the system is to transport the drilling fluid and the formation particles to the surface on the drilling unit prior to setting structural pipe on the seabed and when drilling at least one hole section after the first surface structural casing have been set. The apparatus is used in order to drill all surface hole sections with the riser installed in order to avoid “pump & dump” procedures and to recover all mud and chemicals.
    • 在深海水下钻井期间控制和调节井底井压力的布置和方法:该方法涉及在钻井立管中调整液体/空气界面水平。 该装置包括在水面下方的深度处具有出口的钻井立管。 出口连接到具有回流导管回到钻井容器的海底泵送系统。 该系统的目的是在将结构管道设置在海床上之前以及在第一表面结构壳体被固定之后钻探至少一个孔部分时,将钻井液和地层颗粒运送到钻井单元的表面上。 该设备用于钻井所有的表面孔部分,以安装提升管,以避免“泵和倾倒”程序,并回收所有的泥浆和化学物质。