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    Method of forming and servicing wellbores from a main wellbore
    1.
    发明授权
    Method of forming and servicing wellbores from a main wellbore 失效
    从主井筒形成和维修井筒的方法

    公开(公告)号：US06279658B1

    公开(公告)日：2001-08-28

    申请号：US08947073

    申请日：1997-10-08

    申请人： Joseph F. Donovan ,  Roger P. Herbert ,  Christopher L. Gann ,  Michael H. Johnson

    发明人： Joseph F. Donovan ,  Roger P. Herbert ,  Christopher L. Gann ,  Michael H. Johnson

    IPC分类号： E21B4314

    CPC分类号： E21B19/143 ,  E21B17/00 ,  E21B17/18 ,  E21B33/035 ,  E21B33/037 ,  E21B36/005 ,  E21B41/08 ,  E21B43/01 ,  E21B43/14 ,  E21B43/305 ,  E21B43/38 ,  E21B43/40

    摘要： The present invention provides methods for forming multiple wellbores from a single location. A relatively large diameter main wellbore is drilled to a known depth. A plurality of spaced apart wellbores are formed from the bottom of the main wellbore, wherein at least one such wellbore is a production wellbore for producing hydrocarbons from subsurface formations. Wellhead equipment for each production wellbore is installed at main wellbore bottom. Additional devices or equipment are also placed in the main wellbore, preferably near the bottom. Such equipment may include a fluid processing apparatus, chemical injection equipment for injecting chemicals or additives into the wellbores, compressors for injecting compressed gas into one or more of the production wellbores or for transporting a gas to the surface, robotics devices for placing and/or removing devices or materials from the wellbores, a control unit for monitoring and controlling apparatus and devices in the main wellbore and the production wellbore, and any other desired equipment for performing a useful function relating any of the wellbores. A secondary access wellbore may be formed from the main wellbore or the surface for storing apparatus that is used to monitor and/or control the operation of devises in the production wellbores during the various stages in the life of such wellbores. Some of the equipment deployed in the main wellbore is prefabricated and may be retrieved. selective redundant equipment is provided to allow uninterrupted production from the various wellbores.

    摘要翻译： 本发明提供从单个位置形成多个井眼的方法。 相对较大直径的主井筒钻到已知的深度。 从主井眼的底部形成多个间隔开的井眼，其中至少一个这样的井眼是用于从地下地层产生烃的生产井眼。 每个生产井筒的井口设备安装在主井眼底部。 附加的装置或设备也被放置在主井眼中，优选地靠近底部。 这样的设备可以包括流体处理设备，用于将井眼中的化学物质或添加剂注入的化学喷射设备，用于将压缩气体注入一个或多个生产井筒中或用于将气体输送到表面的压缩机，用于放置和/或 从井筒中去除装置或材料，用于监测和控制主井筒和生产井眼中的装置和装置的控制单元以及用于执行与任何井筒相关的有用功能的任何其它所需设备。 二次通道井眼可以由用于监测和/或控制生产井筒中的设备的运行的主井筒或用于存储装置的表面形成，该井在这样的井筒的寿命期间的各个阶段期间。 部署在主井筒中的一些设备是预制的，可以被检索。 提供选择性冗余设备以允许不间断地从各种井筒的生产。