公开(公告)号：US06419018B1

公开(公告)日：2002-07-16

申请号：US09527799

申请日：2000-03-17

申请人： Carey J. Naquin ,  Terry L. Floyd

发明人： Carey J. Naquin ,  Terry L. Floyd

IPC分类号： E21B3600

CPC分类号： E21B41/02 ,  E21B17/01 ,  E21B36/005

摘要： A subsea subterranean well completion has a tubing string with a portion that extends through a region of the completion exposed to temperatures sufficiently low to potentially create wax and/or hydrate deposits within the tubing string during pre-production or shut-down periods. In order to inhibit or remove the formation of these deposits, the well completion is provided with a flow assurance system operative to create a flow of heating fluid which is recirculated through the space between the tubing string portion and the well casing/production riser structure in a manner causing the heating fluid to flow along the outer side of the tubing string portion without previously or subsequently traversing the interior of the tubing string. The heat absorbed by the tubing string inhibits or removes wax and/or hydrate formation in production fluid therein without the previous necessity of using a chemical injection system to inject plug-inhibiting chemicals into the interior of the tubing string. The flow assurance system may also be used to recirculate or otherwise flow other contact fluids, such as corrosion inhibiting fluids or insulation blanket fluids, against the outer side of the tubing string.

摘要翻译： 海底地下井完井具有管柱，其中一部分延伸通过暴露于足够低的温度的区域，以在预生产或关闭期间潜在地在管柱中产生蜡和/或水合物沉积物。 为了抑制或去除这些沉积物的形成，提供了一个流动保证系统，该系统可操作以产生加热流体的流动，该加热流体通过管柱部分和井套管/生产提升管结构之间的空间再循环 导致加热流体沿着管柱部分的外侧流动而不预先或随后穿过管柱的内部的方式。 油管柱吸收的热量在生产流体中抑制或去除蜡和/或水合物形成，而不需要使用化学注射系统将堵塞抑制化学品注入管柱内部。 流动保证系统还可用于循环或以其它方式流过其它接触流体，例如腐蚀抑制流体或隔热层流体，以抵抗油管柱的外侧。

公开(公告)号：US5875852A

公开(公告)日：1999-03-02

申请号：US807112

申请日：1997-02-04

申请人： Terry L. Floyd ,  Dean S. Oneal

发明人： Terry L. Floyd ,  Dean S. Oneal

IPC分类号： E21B17/00 ,  E21B33/122 ,  E21B33/124 ,  E21B34/06 ,  E21B34/10 ,  E21B41/02 ,  E21B43/12 ,  E21B33/12

CPC分类号： E21B17/003 ,  E21B33/122 ,  E21B33/124 ,  E21B34/06 ,  E21B34/10 ,  E21B41/02 ,  E21B43/122

摘要： A method and associated apparatus provide enhanced safety in subterranean well completions while permitting other production issues to be addressed efficiently and cost effectively. In a preferred embodiment, a method of producing a subterranean well utilizes an isolation packer having an inner mandrel through which fluid transmission lines and electrical transmission lines may be conveniently installed. A unique configuration of the packer permits a surface controlled subsurface safety valve, fluid property sensors, injection subs, etc., to be installed below the packer with the various lines used therewith extended axially through the mandrel.

摘要翻译： 一种方法和相关设备在地下井完井中提供增强的安全性，同时允许有效地和成本有效地解决其他生产问题。 在优选实施例中，生产地下井的方法利用具有内心轴的隔离封隔器，流体传输线和输电线可以通过该内心轴方便地安装。 封隔器的独特构造允许将表面控制的地下安全阀，流体性质传感器，注射器等安装在封隔器下方，其中使用的各种线轴向延伸穿过心轴。