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公开(公告)号：US5881812A
公开(公告)日：1999-03-16
申请号：US878529
申请日：1997-06-19
CPC分类号： E21B43/084 , B01D29/111
摘要： A filter for subterranean environments includes an inner support member capable of transporting a fluid in an axial direction thereof, a filter body disposed around the inner support member and including a filter medium, and one or more end connectors surrounding the inner support member and each connected to an end of the filter body. Each end connector has a structure such that it can be installed on an inner support member having lengthwise ends with an outer diameter larger than the inner diameter of the end connector. According to one form of the invention, an end connector comprises a plurality of arcuate sections which are combined to surround the inner support member and are immobilized with respect to each other. According to another form of the invention, an end connector comprises a split annulus having two circumferential ends. The annulus can be deformed between an expanded state in which the annulus can be fit over the inner support member and a closed state in which the annulus fits sufficiently closely around the inner support member to be sealed to it. According to another form of the invention, an end connector comprises concentric inner and outer sleeves.
摘要翻译： 用于地下环境的过滤器包括能够沿其轴向方向输送流体的内部支撑构件，设置在内部支撑构件周围并包括过滤介质的过滤体，以及包围内部支撑构件的一个或多个端部连接器，并且每个连接 到过滤器主体的一端。 每个端部连接器具有这样的结构，使得其可以安装在具有长度大于端部连接器的内径的外径的纵向端部的内部支撑构件上。 根据本发明的一种形式，端部连接器包括多个弓形部分，其被组合以包围内部支撑构件并且相对于彼此固定。 根据本发明的另一种形式，端部连接器包括具有两个周向端部的分离环。 环形空间可以在其中环形件可以配合在内部支撑构件上的膨胀状态和闭合状态之间变形，其中环形空间紧密地配合在内部支撑构件周围以被密封。 根据本发明的另一种形式，端部连接器包括同心的内部和外部套筒。
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公开(公告)号：US5439058A
公开(公告)日：1995-08-08
申请号：US208744
申请日：1994-03-11
摘要： A method of cleaning an oil or gas well includes mixing a caustic with a saline solution to precipitate hydroxide species from the saline solution and form a milky suspension. The suspension is contacted with contaminants in a well bore to entrap the contaminants. A polymeric flocculant is then mixed with the suspension in the well bore to aggregate the hydroxide species and the entrapped contaminants into flocs. The flocs are extremely strong and can withstand the highly turbulent flow existing in the well bore and can be readily flushed out of the well bore.
摘要翻译： 清洁油或气井的方法包括将苛性碱与盐溶液混合以从盐溶液中沉淀氢氧化物物质并形成乳状悬浮液。 悬浮液与井眼中的污染物接触以捕获污染物。 然后将聚合物絮凝剂与井眼中的悬浮液混合，将氢氧化物物质和捕获的污染物聚集成絮凝物。 絮状物非常坚固，能够承受井眼中存在的高度湍流，并且可以容易地从井眼冲出。
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公开(公告)号：US5664628A
公开(公告)日：1997-09-09
申请号：US351658
申请日：1994-12-07
申请人： Paul C. Koehler , Stephen A. Geibel , Michael B. Whitlock , Reza Hashemi , Christophe A. Malbrel
发明人： Paul C. Koehler , Stephen A. Geibel , Michael B. Whitlock , Reza Hashemi , Christophe A. Malbrel
CPC分类号： E21B43/084 , B01D29/111 , B01D35/26 , B01D39/2027 , E21B29/10 , E21B43/082 , B01D2201/0407 , B01D2201/188
摘要： A damage-resistant filter for use in subterranean wells has at least one layer of a filter medium, such as a sintered supported porous membrane, coaxially disposed about a perforated support member. The filter may also include a drainage layer disposed between the inner support member and the filter medium, and a protective covering, such as a perforated cage, surrounding the filter medium. The filter is particularly suitable for removal of sand and other particulates from fluids produced in a well.
摘要翻译： 用于地下井的耐破坏的过滤器具有至少一层过滤介质，例如被烧结的支撑多孔膜，同轴地设置在穿孔的支撑构件周围。 过滤器还可以包括设置在内部支撑构件和过滤介质之间的排水层和围绕过滤介质的保护性覆盖物，例如穿孔笼。 过滤器特别适用于从井中产生的流体中除去沙子和其他颗粒物。
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公开(公告)号：US5909773A
公开(公告)日：1999-06-08
申请号：US878078
申请日：1997-06-18
申请人： Paul C. Koehler , Stephen A. Geibel , Michael B. Whitlock , Reza Hashemi , Christophe A. Malbrel
发明人： Paul C. Koehler , Stephen A. Geibel , Michael B. Whitlock , Reza Hashemi , Christophe A. Malbrel
CPC分类号： E21B43/084 , B01D29/111 , B01D35/26 , B01D39/2027 , E21B29/10 , E21B43/082 , B01D2201/0407 , B01D2201/188
摘要： A damage-resistant filter for use in subterranean wells has at least one layer of a filter medium, such as a sintered supported porous membrane, coaxially disposed about a perforated support member. The filter may also include a drainage layer disposed between the inner support member and the filter medium, and a protective covering, such as a perforated cage, surrounding the filter medium. The filter is particularly suitable for removal of sand and other particulates from fluids produced in a well.
摘要翻译： 用于地下井的耐破坏的过滤器具有至少一层过滤介质，例如被烧结的支撑多孔膜，同轴地设置在穿孔的支撑构件周围。 过滤器还可以包括设置在内部支撑构件和过滤介质之间的排水层和围绕过滤介质的保护性覆盖物，例如穿孔笼。 过滤器特别适用于从井中产生的流体中除去沙子和其他颗粒物。
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公开(公告)号：US5458198A
公开(公告)日：1995-10-17
申请号：US111927
申请日：1993-08-26
IPC分类号： E21B33/068 , E21B37/00
CPC分类号： E21B37/00 , E21B33/068
摘要： An oil or gas well cleaning method includes inserting tubing, such as a coiled tubing, into a well bore, for example, into a production pipe in a well bore. A cleaning fluid containing a flocculant is passed into the well and the flocculant in the cleaning fluid is mixed with solid particles in the well bore to flocculate the particles. The cleaning fluid and the flocculated particles are then removed from the well. In one embodiment, the cleaning fluid containing the flocculant is discharged from the lower end of the tubing into the well, and the cleaning fluid with the flocculated particles is removed from the well via the production pipe. Alternatively, the cleaning fluid containing the flocculant may be introduced into the well through the production pipe, and the cleaning fluid with the flocculated particles may be removed via the tubing. The flocculant may also serve as a friction reducer to reduce friction between the cleaning fluid, the solids, the production pipe, and the tubing.
摘要翻译： 油或气井清洁方法包括将诸如连续油管的管道插入井眼中，例如将其插入井眼中的生产管道中。 将含有絮凝剂的清洁流体进入孔中，将清洁流体中的絮凝剂与井眼中的固体颗粒混合以使颗粒絮凝。 然后将清洗液和絮凝颗粒从孔中取出。 在一个实施例中，含有絮凝剂的清洗流体从管的下端排出到井中，并且通过生产管从孔中除去具有絮凝颗粒的清洁流体。 或者，含有絮凝剂的清洗液可以通过生产管道引入井中，并且可以通过管道去除具有絮凝颗粒的清洁流体。 絮凝剂还可用作减摩剂以减少清洁流体，固体，生产管道和管道之间的摩擦。
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