公开(公告)号：US06427776B1

公开(公告)日：2002-08-06

申请号：US09536937

申请日：2000-03-27

申请人： Corey E. Hoffman ,  Richard Lee Giroux ,  Mike A. Luke ,  Stephen J. Norris

发明人： Corey E. Hoffman ,  Richard Lee Giroux ,  Mike A. Luke ,  Stephen J. Norris

IPC分类号： E21B3708

CPC分类号： E21B23/04 ,  E21B27/00 ,  E21B37/08 ,  E21B43/124

摘要： The present invention provides a simple debris removal apparatus for use in a wellbore. In one aspect of the invention a modular, interchangeable venturi is provided which can be retrofit into an existing debris bailer having a filter and a debris collection container. In another aspect of the invention, a venturi is utilized to create a negative pressure in a wellbore sufficient to actuate a retrieval tool for a downhole device. In yet another aspect of the invention, a combination tool is provided which can evacuate debris in a wellbore, thereby uncovering a downhole device which can then be removed in a single trip. In yet another aspect of the invention, a debris removal apparatus is provided with a method for utilizing the apparatus in a wellbore on coiled tubing.

公开(公告)号：US06499546B1

公开(公告)日：2002-12-31

申请号：US09910424

申请日：2001-07-20

申请人： Michael A. Freeman ,  Taylor Caldwell Green, III

发明人： Michael A. Freeman ,  Taylor Caldwell Green, III

IPC分类号： E21B3708

CPC分类号： C09K8/52 ,  E21B21/066 ,  E21B21/068

摘要： The present invention relates to the use of a buffered acid wash to reduce the amount of oil in cuttings associated with the use of an invert emulsion well fluid. The buffered acid wash is sufficiently acidic as to convert all of the surfactant in the invert oil emulsion from one charge species into another, but substantially prevents the fluid from becoming so acidic as to generate carbon dioxide.

摘要翻译： 本发明涉及使用缓冲酸洗来减少与使用反相乳液井流体相关的切屑中的油量。 缓冲的酸性洗涤剂是足够酸性的，以将反转油乳液中的所有表面活性剂从一种电荷种类转化成另一种，但基本上防止了流体变得如此酸性以产生二氧化碳。

公开(公告)号：US06347667B1

公开(公告)日：2002-02-19

申请号：US09427314

申请日：1999-10-26

申请人： Paul David Howlett ,  Mark Carmichael

发明人： Paul David Howlett ,  Mark Carmichael

IPC分类号： E21B3708

CPC分类号： E21B37/04

摘要： Well cleaning apparatus comprises a tubular body member attached to a work string which supports one or more resilient and pliable cleaning members. Each cleaning member is provided with a means for allowing bypass as sized and adapted to wipe the well casing. In one embodiment, the apparatus may be used to plunge the well with the cleaning members providing the sealing relationship with the well casing.

摘要翻译： 井清洁装置包括附接到工作柱的管状本体构件，其支撑一个或多个弹性和柔韧的清洁构件。 每个清洁构件设置有用于允许旁路的尺寸和适于擦拭井套管的装置。 在一个实施例中，该装置可以用于将井与具有与井套管密封关系的清洁构件插入井中。

公开(公告)号：US06338386B1

公开(公告)日：2002-01-15

申请号：US09568726

申请日：2000-05-11

申请人： Steven Catania ,  Neil Mansuy

发明人： Steven Catania ,  Neil Mansuy

IPC分类号： E21B3708

CPC分类号： E21B43/26 ,  B09B1/00 ,  B09B1/006 ,  E21B43/164 ,  Y02C20/20 ,  Y02W30/35

摘要： Gaseous and liquid carbon dioxide (CO2) are applied to a landfill well to penetrate the landfill under rapid pressurization and depressurization repeated in cycles, with or without leachate or fluid in the well. These cycles can be repeated until the CO2 flows more freely down a lower pressure gradient in the well into the landfill surrounding the well screen, creating fissures in the landfill which allow methane and other gases to enter the well, thereby significantly enhancing methane and other landfill gas recovery.

公开(公告)号：US06832655B2

公开(公告)日：2004-12-21

申请号：US10256736

申请日：2002-09-27

申请人： John Ravensbergen ,  John Gordon Misselbrook ,  Lance Nigel Portman

发明人： John Ravensbergen ,  John Gordon Misselbrook ,  Lance Nigel Portman

IPC分类号： E21B3708

CPC分类号： E21B37/06

摘要： A method for cleaning a plugged gravel pack in a subterranean wellbore is provided. The method comprises the steps of using a pressure pulsating jet and a tangential vortex to deliver a pressure pulsating treatment fluid into the gravel pack wherein soluble plugging materials in the gravel pack are dissolved by the treatment fluid and insoluble plugging materials are moved through the gravel pack and circulated out of the wellbore. The treatment fluid is driven into the gravel pack to dissolve soluble fines and displace insoluble fines from the interstitial pore spaces of the gravel pack.

摘要翻译： 提供了一种在地下井眼中清洁堵塞的砾石充填物的方法。 该方法包括以下步骤：使用压力脉动射流和切向涡流将压力脉动处理流体输送到砾石包装中，其中砾石包装中的可溶性堵塞材料被处理流体溶解，并且将不溶性堵塞材料移动通过砾石包装 并从井筒中流出。 处理液被驱入砾石包装中以溶解可溶性细粉，并从砾石包装的间隙孔隙中取代不溶性细粉。

公开(公告)号：US06250388B1

公开(公告)日：2001-06-26

申请号：US09259363

申请日：1999-02-26

申请人： Gennady Carmi ,  Leonid Slez ,  Yuri Ass

发明人： Gennady Carmi ,  Leonid Slez ,  Yuri Ass

IPC分类号： E21B3708

CPC分类号： E21B37/08 ,  B08B7/0007 ,  E21B21/00 ,  E21B37/00 ,  E21B43/25 ,  E21B43/255 ,  E21B2023/008

摘要： A self-firing and self-propelling gas impulse device which includes a housing having a longitudinal axis, a gas inlet port, and one or more gas discharge ports; an inlet chamber, arranged for gas communication with a source of compressed gas via the inlet port and operative to receive compressed gas therefrom; a pressurization chamber arranged for gas communication with the inlet chamber thereby to facilitate a build-up of pressurized gas therein, and arranged for selectable gas communication with the one or more discharge ports; and a piston unit arranged along the longitudinal axis of the housing between the inlet chamber and the pressurization chamber. The piston unit is selectably movable between a first operative position and a second operative position, whereat in the first operative position the piston unit prevents gas communication between the pressurization chamber and the one or more discharge ports, and whereat in the second operative position the piston unit is retracted so as to facilitate gas communication between the pressurization chamber and the one or more discharge ports.

摘要翻译： 一种自燃和自推进气体脉冲装置，其包括具有纵向轴线的壳体，气体入口和一个或多个气体排出口; 入口室，布置成经由所述入口与压缩气体源气体连通并且可操作以从其接收压缩气体; 加压室，其布置成与所述入口室气体连通，从而便于在其中积聚加压气体，并布置成与所述一个或多个排出口可选择地气体连通; 以及沿所述壳体的纵向轴线在所述入口室和所述加压室之间布置的活塞单元。 活塞单元可选地在第一操作位置和第二操作位置之间移动，其中在第一操作位置，活塞单元防止加压室与一个或多个排出口之间的气体连通，并且在第二操作位置，活塞 单元缩回以促进加压室和一个或多个排出口之间的气体连通。