公开(公告)号：US4147221A

公开(公告)日：1979-04-03

申请号：US821853

申请日：1977-08-04

申请人： William T. Ilfrey ,  Joe K. Heilhecker ,  Leo D. Maus

发明人： William T. Ilfrey ,  Joe K. Heilhecker ,  Leo D. Maus

IPC分类号： E21B7/128 ,  E21B19/00 ,  E21B43/017 ,  E21B15/02

CPC分类号： E21B43/017 ,  E21B19/002 ,  E21B7/128

摘要： A marine riser system for use in deep water drilling operations from a floating vessel is disclosed. The riser system permits detachment of the lower end of the riser from the wellhead enabling the riser to be set aside to a position which is clear of the wellhead. Support means adjacent the wellhead can be used to support and position the riser when it is set aside. Tensioners, support mechanisms and guidance means are provided to move the riser back and forth between the wellhead and support means. In this manner, casing and tools having diameters larger than that of the riser can be inserted into the wellhead without returning the riser to the surface. Drilling operations with large diameter drill bits can also be conducted with the riser in the set aside position.

摘要翻译： 公开了一种用于从浮式船舶进行深水钻井作业的船用立管系统。 提升管系统允许将提升管的下端从井口分离，使得提升管能够被放置在远离井口的位置。 靠近井口的支撑装置可以用于在立管放置时支撑和定位立管。 提供张紧器，支撑机构和引导装置以在井口和支撑装置之间来回移动提升器。 以这种方式，直径大于提升管直径的套管和工具可以插入井口中，而不将提升管返回到表面。 具有大直径钻头的钻孔操作也可以在提升管处于搁置位置的情况下进行。

公开(公告)号：US4610569A

公开(公告)日：1986-09-09

申请号：US635942

申请日：1984-07-30

申请人： Lyle D. Finn ,  Leo D. Maus

发明人： Lyle D. Finn ,  Leo D. Maus

IPC分类号： E02B17/02 ,  E02B17/00 ,  E02D5/00

CPC分类号： E02B17/027 ,  E02B2017/0043 ,  E02B2017/0073

摘要： A hybrid offshore structure for conducting petroleum drilling and producing operations in very deep waters is disclosed. The structure consists primarily of a substantially rigid lower section extending upwardly from the bottom of the body of water to a pivot point located intermediate the bottom and the surface of the body of water, a compliant upper section extending upwardly from the pivot point to a deck located above the water surface, pivot means located proximate the pivot point and adapted to permit the compliant upper section to pivot laterally in response to environmental loads, and torsion means adapted to transmit torsional loads from the compliant upper section to the substantially rigid lower section. The lower section may comprise either a conventional trussed steel frame fixed to the bottom of the body of water by a plurality of piles or a concrete or steel gravity base. The compliant upper section may optionally be either a guyed tower or a buoyant tower. A variety of suitable pivot means and torsion means may be used. The pivot point is positioned so that the weight of the hybrid structure is substantially minimized while maintaining the flexural vibration period of the structure within acceptable limits. Generally, the pivot point will be located above the bottom of the body of water a distance of between about 10 percent and about 50 percent of the total depth of the body of water.

摘要翻译： 公开了一种在非常深的水域进行石油钻探和生产作业的混合海上结构。 该结构主要包括从水体的底部向上延伸到位于水体的底部和表面之间的枢轴点处的基本上刚性的下部分，从枢轴点向上延伸到甲板的柔顺上部 位于水表面上方的枢转装置位于枢转点附近并且适于允许柔顺上部部分响应于环境负载而横向枢转，并且扭转装置适于将扭转载荷从柔性上部部分传递到基本刚性的下部。 下部可以包括通过多个桩或混凝土或钢重力底座固定到水体底部的常规桁架钢框架。 柔性上部可以可选地是带有塔的塔架或浮力塔。 可以使用各种合适的枢转装置和扭转装置。 枢轴点被定位成使得混合结构的重量基本上最小化，同时将结构的弯曲振动周期保持在可接受的限度内。 通常，枢轴点将位于水体底部的上方距离水体总深度的约10％至约50％之间的距离。