公开(公告)号：US4601494A

公开(公告)日：1986-07-22

申请号：US478365

申请日：1983-03-24

申请人： Roderick D. McLeod

发明人： Roderick D. McLeod

IPC分类号： E21B17/06 ,  E21B33/126 ,  F16L17/00

CPC分类号： E21B33/126 ,  E21B17/06

摘要： A nipple for use in a Christmas tree bypass tool has an outer, molded rubber sleeve thereon and an inner steel insert, a portion of which forms a seal against a skirt on the rubber sleeve. The seal between the insert and the skirt prevents high pressure in the tool from reaching and acting on the bond between the rubber sleeve and the nipple.

摘要翻译： 用于圣诞树旁路工具的乳头具有外部的模制橡胶套管和内部钢制插入件，其内部的一部分形成与橡胶套筒上的裙部密封。 插入件和裙部之间的密封防止工具中的高压力到达并作用在橡胶套筒和乳头之间的接合上。

公开(公告)号：US06899172B2

公开(公告)日：2005-05-31

申请号：US10461688

申请日：2003-06-16

申请人： Roderick D. McLeod ,  Jerry A. Johnson

发明人： Roderick D. McLeod ,  Jerry A. Johnson

IPC分类号： E21B33/068 ,  E21B43/26 ,  E21B33/03

CPC分类号： E21B43/26 ,  E21B33/068

摘要： A frac head comprising a main body with plural side entries oriented around the main body such that flow from each of the side entries meets flow from an opposing side entry in the internal bore. A replaceable abrasion resistant wear sleeve is secured in the internal bore of the main body downstream of the side entries and positioned to intercept flow from the side entries and prevent the flow from impacting directly on material of the main body. The side entries terminate at the internal bore equidistantly from the lower end of the main body, and are symmetrically arranged around the main body. The side entries are oriented at about 45° to the downstream direction. The replaceable abrasion resistant wear sleeve is held against movement downstream by abutment of a shoulder on the replaceable abrasion resistant wear sleeve against a shoulder on the frac body, and has a tapered internal bore.

摘要翻译： 一种压裂头，其包括主体，所述主体具有围绕主体定向的多个侧入口，使得来自每个侧部入口的流量与内孔中的相对侧入口相遇。 可替换的耐磨磨损套筒固定在主体的内孔中，并且定位成拦截侧入口的流动并防止流动直接冲击到主体的材料上。 侧面条目从主体的下端等距离的内孔终止，并且围绕主体对称地布置。 侧入口与下游方向成45°左右。 可替换的耐磨耐磨套筒通过抵靠可压缩耐磨耐磨套上的肩部抵靠在压克力体上的肩部而抵靠下游运动，并具有锥形内孔。

公开(公告)号：US5020590A

公开(公告)日：1991-06-04

申请号：US443475

申请日：1989-11-30

申请人： Roderick D. McLeod

发明人： Roderick D. McLeod

IPC分类号： E21B19/00 ,  E21B33/068

CPC分类号： E21B34/02 ,  E21B19/00 ,  E21B33/068

摘要： In the area of oilfield wellhead equipment and well servicing, specifically the operations associated with the prevention of fluids and gases from escaping from the well when valves and associated equipment which normally control the flow of these fluids and gases have been removed for repair or for any other reason, the installation of and removal of a plug in the top of the tubing hanger is a common and necessary operation. This plug is commonly called a back-pressure plug and is a standard throughout the industry. A tool is proposed for installing and removing this plug while the well is under pressure, which tool will indicate that the plug is properly in place and will also overcome the operational problems associated with existing tools and the overall height associated with existing tools.

摘要翻译： 在油田井口设备和维修保养方面，具体来说，与通常控制这些流体和气体的流量的阀门和相关设备已经被去除以维修或者任何 其他原因，安装和拆卸管道挂钩顶部的插头是一个常见和必要的操作。 这种插头通常被称为背压插头，是整个行业的标准。 提出了一种工具，用于在井受到压力的情况下安装和拆卸此插头，该工具将指示插头正确就位，并且还将克服与现有工具相关的操作问题以及与现有工具相关的整体高度。

公开(公告)号：US4991650A

公开(公告)日：1991-02-12

申请号：US443389

申请日：1989-11-30

申请人： Roderick D. McLeod

发明人： Roderick D. McLeod

IPC分类号： E21B33/068 ,  E21B33/128

CPC分类号： E21B33/128 ,  E21B33/068

摘要： An improved wellhead isolation tool is presented which includes an expanding nipple operable from outside the wellhead and casing, the nipple and its concentric mandrels being inserted into the wellhead and thus down through the wellhead array and into the casing or tubing by a concentric hydraulic cylinder. The nipple is then expanded and sealed in the casing or tubing by a second concentric hydraulic cylinder. It is then locked in place both mechanically and hydraulically.

摘要翻译： 提出了一种改进的井口隔离工具，其包括从井口和套管的外部可操作的膨胀的接头，乳头及其同心心轴插入井口，从而通过井口阵列下降并通过同心液压缸进入套管或管道。 然后将乳头通过第二同心液压缸膨胀并密封在套管或管中。 然后将其机械和液压地锁定在适当位置。

公开(公告)号：US4691770A

公开(公告)日：1987-09-08

申请号：US813927

申请日：1985-12-27

申请人： Roderick D. McLeod

发明人： Roderick D. McLeod

IPC分类号： E21B33/03 ,  E21B33/128

CPC分类号： E21B33/128 ,  E21B33/03

摘要： An expanding nipple, externally mounted packer has a body which mounts onto a casing head by way of a tubing spool or the like. The body contains the upper ends of a pair of concentric mandrels which are lowered into the well casing. The outer mandrel has a deformable seal on its lower end and the inner mandrel has an expander on its lower end. Means in the body, responsive to hydraulic pressure, raises the inner mandrel with respect to the outer mandrel so that the expander forces the seal outwards against the casing wall.

摘要翻译： 膨胀的接头，外部安装的封隔器具有通过管芯等安装到套管头上的主体。 主体包含一对同心心轴的上端，它们下降到井套管中。 外心轴在其下端具有可变形密封件，并且内心轴在其下端具有膨胀器。 机体在液压方面的作用是使内心轴相对于外心轴升高，使得膨胀机使密封件向外靠着套管壁。

公开(公告)号：US4657075A

公开(公告)日：1987-04-14

申请号：US813790

申请日：1985-12-27

申请人： Roderick D. McLeod

发明人： Roderick D. McLeod

IPC分类号： E21B33/068 ,  E21B33/12 ,  E21B33/02 ,  E21B23/06

CPC分类号： E21B33/12 ,  E21B33/068

摘要： A concentric mandrel assembly for use in a wellhead isolation tool is operable from outside the wellhead and casing. An outer mandrel of the assembly carries a packoff nipple, including a resilient seal member, on its lower end and the inner mandrel of the assembly carrier carries an expander on its lower end. Means are provided for axially moving the mandrels relative to one another so that the expander can apply outward force on the resilient seal against the wall of a well casing.

摘要翻译： 用于井口隔离工具的同心心轴组件可从井口和套管的外部操作。 组件的外心轴在其下端承载包装弹簧密封构件，包装弹性密封构件，组装载体的内心轴在其下端承载膨胀器。 提供了用于使心轴相对于彼此轴向移动的装置，使得膨胀器可以将弹性密封件上的向外的力施加到井套管的壁上。

公开(公告)号：US5396956A

公开(公告)日：1995-03-14

申请号：US165495

申请日：1993-12-13

申请人： Bruce Cherewyk ,  Roderick D. McLeod ,  Albert Roesch

发明人： Bruce Cherewyk ,  Roderick D. McLeod ,  Albert Roesch

IPC分类号： E21B17/10 ,  E21B19/00 ,  E21B23/00 ,  E21B33/03 ,  E21B33/04

CPC分类号： E21B47/1025 ,  E21B17/1007

摘要： A wellhead isolation tool nipple seal testing apparatus includes an upper seal, upper nipple, and a lower seal and a lower nipple, the lower nipple being attached to the upper nipple. Test pressure forced between the upper and lower seals may be used to test the upper nipple up to well servicing pressures. The lower nipple may seal the well bore by being closed, or by the use of a mandrel carrying a seal on its lower end or with a burst disk.

摘要翻译： 井口隔离工具奶嘴密封测试装置包括上密封件，上乳头和下密封件和下乳头，下乳头连接到上乳头。 上密封和下密封之间强制的测试压力可用于测试上乳头直至维护压力。 下乳头可以通过关闭密封井眼，或者通过使用在其下端或带有破裂盘的密封件的心轴。

公开(公告)号：US5025857A

公开(公告)日：1991-06-25

申请号：US260071

申请日：1988-10-20

申请人： Roderick D. McLeod

发明人： Roderick D. McLeod

IPC分类号： E21B19/00 ,  E21B23/06 ,  E21B33/068 ,  E21B33/129 ,  E21B47/10

CPC分类号： E21B33/1293 ,  E21B19/00 ,  E21B23/06 ,  E21B33/068 ,  E21B47/1025

摘要： In the area of oilfield wellhead equipment, and specifically the wellhead valve known as the master valve on the wellhead array, there is often the necessity to remove this valve for repairs or for its replacement by some other piece of equipment such as a blow out preventer, this service being done while the well is under pressure from the fluids or gases normally being produced or for any other reason.A novel packer is described which can be put into place in a section of the well tubing or casing close to the master valve using a novel tool which is also described. This packer will isolate the master valve from the well fluids and pressure, allow it to be taken off and replaced, or other equipment to be installed in its place, and also allow the master valve, its connections, or other equipment thus put on the well, to be pressure tested prior to removing the packer from the well tubing or casing and restoring the gas or fluid pressure to the wellhead array.

摘要翻译： 在油田井口设备领​​域，特别是井口阵列上称为主阀的井口阀门，往往需要拆除这个阀门以进行维修或更换其他一些设备，如防喷器 在正常生产的流体或气体或任何其他原因的压力下，这项服务正在进行。 描述了一种新颖的封隔器，其可以使用也被描述的新型工具在靠近主阀的井管或套管的一部分中就位。 该封隔器将使主阀与井液和压力隔离，使其能够被取下并更换，或将其安装在其上的其他设备，并且还允许主阀，其连接或其他设备 然后在从油管或套管中取出封隔器之前进行压力测试，并将气体或流体压力恢复到井口阵列。

公开(公告)号：US4993488A

公开(公告)日：1991-02-19

申请号：US430012

申请日：1989-11-01

申请人： Roderick D. McLeod

发明人： Roderick D. McLeod

IPC分类号： E21B33/068 ,  E21B33/128

CPC分类号： E21B33/128 ,  E21B33/068

摘要： An expanding nipple, externally mounted packer has a body which mounts onto a stack of blowout preventers or a casing head and tubing spool or the like. The body contains an external locking mechanism and the upper ends of a pair of concentric mandrels which are lowered into the well casing, through the blowout preventer stack or other configuration of well head equipment. The outer mandrel has a deformable seal on its lower end and the inner mandrel has an expander on its lower end. A piston on the inner mandrel responsive to hydraulic pressure, raises the inner mandrel with respect to the outer mandrel so that the expander forces the seal outwards against the casing wall. The locking mechanism allows the seal to be locked in place. The hydraulic pressure on the piston is reversed to unseal the nipple.

摘要翻译： 膨胀的奶嘴，外部安装的封隔器具有安装在防喷器或套管头和管线管等的堆叠上的主体。 主体包括外部锁定机构，并且一对同心心轴的上端通过防喷器叠层或井眼设备的其它构造下降到井套管中。 外心轴在其下端具有可变形密封件，并且内心轴在其下端具有膨胀器。 响应于液压而在内心轴上的活塞相对于外心轴升高内心轴，使得膨胀器迫使密封件向外靠着套管壁。 锁定机构允许密封件锁定到位。 活塞上的液压反向，以开启乳头。

公开(公告)号：US06189629B1

公开(公告)日：2001-02-20

申请号：US09153089

申请日：1998-09-14

申请人： Roderick D. McLeod ,  Dwight N. Loree

发明人： Roderick D. McLeod ,  Dwight N. Loree

IPC分类号： E21B708

CPC分类号： E21B7/061 ,  E21B7/18 ,  E21B43/103

摘要： In the field of drilling lateral channels from the cased bore of an oil well, a system is presented whereby a number of lateral channels can be drilled through the casing and out a distance into the formation with no requirement to move or raise the lateral drilling apparatus to the surface for each lateral channel drilled. The direction of the drilled lateral channel can be selected by the system operator at the well head. The system will allow the drilling of lateral channels with the well under pressure. A configuration is shown which will allow the installation of a flexible perforated liner in the channel, which flexible perforated liner will prevent the material around the channel from collapsing.

摘要翻译： 在从油井的套管孔钻出横向通道的领域中，提出了一种系统，其中可以通过壳体钻出许多横向通道并且远离地层，而不需要移动或抬起侧向钻井设备 到每个横向通道钻出的表面。 钻井横向通道的方向可由系统操作人员在井口选择。 该系统将允许在压力下钻井横向通道。 示出了将允许在通道中安装柔性穿孔衬垫的构造，该柔性穿孔衬垫将防止通道周围的材料塌陷。