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    • 5. 发明授权
    • Compliant offshore platform
    • 符合海上平台
    • US4696603A
    • 1987-09-29
    • US806055
    • 1985-12-05
    • Mark A. DanaczkoLyle D. FinnM. Sidney GlasscockMichael P. PiazzaKenneth M. SteeleTimothy O. Weaver
    • Mark A. DanaczkoLyle D. FinnM. Sidney GlasscockMichael P. PiazzaKenneth M. SteeleTimothy O. Weaver
    • E02B17/00E02B17/02
    • E02B17/0017
    • A complaint offshore platform in which the primary restoring force to lateral displacement is established by flex piles driven into the seafloor and fixedly secured to the platform legs a preselected distance above the seafloor. The platform includes a substantially rigid space-frame structure extending from the ocean bottom to a position above the ocean surface. A drilling and production deck is secured atop the space-frame structure. Shear piles extend through the base of the space-frame structure to prevent lateral displacement of the base while permitting the space-frame structure to pivot about its base. As the platform sways about its base in response to environmental forces, the flex piles establish a vertical couple at the location at which they are attached to the space frame structure. This couple resists movement of the platform away from a vertical orientation. In the preferred embodiment, the flex piles are secured to the platform at or near one-half the total height of the space-frame structure.
    • 一个投诉海上平台,其中侧向位移的主要恢复力是通过驱动到海底的柔性桩建立的,并且固定地固定在平台上在海底以上的预选距离。 平台包括从海洋底部延伸到海洋表面上方的基本刚性的空间框架结构。 钻井和生产甲板固定在空间框架结构的顶部。 剪切桩延伸穿过空间框架结构的基部,以防止基座的横向位移,同时允许空间框架结构围绕其基部枢转。 随着平台响应于环境力而摇摆其基座,柔性桩在它们附接到空间框架结构的位置处建立垂直耦合。 这对夫妇抵抗平台远离垂直方向的移动。 在优选实施例中,柔性桩在空间框架结构的总高度的一半处或近似固定到平台。
    • 6. 发明授权
    • Offshore platform well system
    • 海上平台井系统
    • US5379844A
    • 1995-01-10
    • US13506
    • 1993-02-04
    • M. Sidney GlasscockGerasime M. Monopolis
    • M. Sidney GlasscockGerasime M. Monopolis
    • E21B7/12E21B33/035E21B43/017E21B43/013F21B7/128
    • E21B7/12E21B33/035E21B41/08E21B43/017
    • A well system, and a method for installing the well system, for use in producing hydrocarbons from a subterranean reservoir located beneath a body of water is disclosed. The well system is intended for use in conjunction with a bottom-founded offshore platform. The inventive well system eliminates the conductors traditionally used in offshore platform well systems. According to the invention, a subsea guide template and an outer casing string extending downwardly from the guide template to a first predetermined depth less than the depth of the reservoir are installed prior to installation of the offshore platform. Thereafter, the platform and the first intermediate casing string are installed, in either order. Drilling for the first intermediate casing string takes place in the open hole defined by the outer casing string with all returns of drilling fluid and drill cuttings occurring at the seafloor. Preferably, the in-water portion of the first intermediate casing string serves as a removable drilling riser for conducting all subsequent drilling operations. The well is then completed in the conventional manner. The present invention may advantageously be combined with pre-installation of some or all of the platform's foundation piles to provide the added benefit of achieving a "storm-safe" condition in a matter of a few hours.
    • 公开了一种井系统和用于安装井系统的方法,用于从位于水体下方的地下储层生产碳氢化合物。 井系统旨在与底层创立的海上平台结合使用。 本发明的井系统消除了传统上在海上平台井系统中使用的导体。 根据本发明,在海上平台的安装之前,安装一个从引导模板向下延伸到小于储层深度的第一预定深度的海底引导模板和外套管柱。 此后,平台和第一中间套管柱以任一顺序安装。 第一中间套管柱的钻孔发生在由外套管柱定义的开孔中,钻井液和钻屑在海底出现全部回报。 优选地,第一中间套管柱的水中部分用作用于进行所有随后的钻井操作的可移除的钻井立管。 然后以常规方式完成井。 本发明可以有利地与预先安装一些或所有平台的基础桩以提供在几个小时内实现“风暴安全”状况的附加好处。