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公开(公告)号：US20140083283A1
公开(公告)日：2014-03-27
申请号：US13608979
申请日：2012-09-10
IPC分类号： E21B43/117
CPC分类号： E21B43/117 , F42B1/028 , F42D3/00
摘要： A perforating system has a perforating module comprising a unitary body of explosive. The explosive is contained within a non-explosive casing, or liner, having formed indentations and a cover thereover. The indentations, which will transform into explosively formed penetrators (EFP's) upon detonation, have a perimeter shape that allows for improved packing density, e.g., a hexagonal perimeter, which results in relatively little “dead space” wherein no perforating penetrators are generated. In operation, the module provides a relatively dense shot pattern and substantially reduced amount of post-detonation debris that could clog the perforations and/or require remedial clean-up or repeat perforation.
摘要翻译： 射孔系统具有包括一体的爆炸物的穿孔模块。 爆炸物包含在不爆炸的外壳或内衬中，其上形成有凹痕和盖。 在爆炸时将变成爆炸形成的穿透器（EFP）的凹陷具有允许改进的填充密度（例如六边形周长）的周边形状，这导致相对较少的“死空间”，其中不产生穿孔穿透器。 在操作中，模块提供相对致密的喷射模式，并且显着减少了可能堵塞穿孔的后爆炸碎片的数量和/或需要补救清理或重复穿孔。
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2.发明授权公开(公告)号：US08033332B2
公开(公告)日：2011-10-11
申请号：US12624195
申请日：2009-11-23
申请人： Joseph Haney , Dan W. Pratt
发明人： Joseph Haney , Dan W. Pratt
IPC分类号： E21B43/117 , E21B43/263
CPC分类号： E21B43/117 , E21B43/26
摘要： A device for perforating and fracturing a formation in a single trip includes shaped charges and a volume of a gas generator. When activated by detonation of the shaped charges, the gas generator forms a high-pressure gas, which includes steam, that expands to stress and fracture the formation. Suitable gas generating materials include hydrates and hydroxides. Other materials that can be employed with the gas generator include oxidizers and material such as metals that increase the available heat for the activation of the gas generator.
摘要翻译： 用于在单次行程中穿孔和压裂地层的装置包括成形装料和一定体积的气体发生器。 当通过引爆成形电荷而被激活时，气体发生器形成高压气体，其包括蒸汽，其膨胀到应力并破裂地层。 合适的气体发生材料包括水合物和氢氧化物。 可以与气体发生器一起使用的其它材料包括氧化剂和诸如增加用于气体发生器的活化的可用热量的金属的材料。
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公开(公告)号：US20100000397A1
公开(公告)日：2010-01-07
申请号：US12541827
申请日：2009-08-14
IPC分类号： E21B43/117
CPC分类号： E21B43/117 , F42B1/028 , F42D3/00
摘要： A perforating system has a perforating module comprising a unitary body of explosive. The explosive is contained within a non-explosive casing, or liner, having formed indentations and a cover thereover. The indentations, which will transform into explosively formed penetrators (EFP's) upon detonation, have a perimeter shape that allows for improved packing density, e.g., a hexagonal perimeter, which results in relatively little “dead space” wherein no perforating penetrators are generated. In operation, the module provides a relatively dense shot pattern and substantially reduced amount of post-detonation debris that could clog the perforations and/or require remedial clean-up or repeat perforation.
摘要翻译： 射孔系统具有包括一体的爆炸物的穿孔模块。 爆炸物包含在不爆炸的外壳或内衬中，其上形成有凹痕和盖。 在爆炸时将变成爆炸形成的穿透器（EFP）的凹陷具有允许改进的填充密度（例如六边形周长）的周边形状，这导致相对较少的“死空间”，其中不产生穿孔穿透器。 在操作中，模块提供相对致密的喷射模式，并且显着减少了可能堵塞穿孔的后爆炸碎片的数量和/或需要补救清理或重复穿孔。
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公开(公告)号：US5785130A
公开(公告)日：1998-07-28
申请号：US724691
申请日：1996-10-01
申请人： David S. Wesson , Dan W. Pratt
发明人： David S. Wesson , Dan W. Pratt
IPC分类号： E21B43/117 , E21B43/1185
CPC分类号： E21B43/117 , E21B43/1185
摘要： A high density perforating gun having a carrier housing tube and an interior charge holder tube through which are mounted zinc alloy shaped charges in a phased relationship between about 135 and 145 degrees. The 135 to 145 degree phased relationship provides for an 18 shot per foot perforating gun system. The shaped charges of selected length are inserted into the carrier housing tube and held in place by fastener rings fitted to fastener ring slots. The nose ends of the shaped charges are fitted with ears to receive a detonating cord. This positions the primer cord in tension and generally coaxially with the carrier housing tube to prevent charge interference and assure sequential detonation.
摘要翻译： 一种高密度射孔枪，具有载体容纳管和内部电荷保持器管，通过其安装约135和145度之间的定相关系的锌合金形状的电荷。 135度到145度的分阶段关系提供了一个18枪每脚穿孔枪系统。 所选长度的成形电荷插入载体容纳管中，并通过紧固环固定环固定在适当位置。 成形装置的鼻端装有耳朵以接收引爆绳。 这将底漆帘线放置在张紧位置并且与载体壳体管一般同轴，以防止电荷干扰并确保连续爆炸。
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公开(公告)号：US06354219B1
公开(公告)日：2002-03-12
申请号：US09295685
申请日：1999-04-21
申请人： Dan W. Pratt , David S. Wesson , John K. Rouse
发明人： Dan W. Pratt , David S. Wesson , John K. Rouse
IPC分类号： F42B102
CPC分类号： F42B1/032 , E21B43/117
摘要： A liner for a explosive shaped charge, such as those used in perforating operations in oil and gas wells, is formed from a powdered metal mixture that includes molybdenum. The molybdenum allows a higher density liner to be formed to create denser jets for achieving deeper penetration, but without the negative effects that often accompany the use of higher density materials. The molybdenum may be used in the amount of 0.5% to 25% by weight of the metal mixture, with tungsten and other constituents forming the remainder of the mixture.
摘要翻译： 用于爆炸性成形装料的衬垫，例如用于油气井中的穿孔操作的衬管由包括钼的粉末状金属混合物形成。 钼允许形成更高密度的衬垫以产生更致密的射流以实现更深的穿透，但没有经常伴随使用较高密度材料的负面影响。 钼的用量可以为金属混合物重量的0.5％至25％，其中钨和其他成分组成混合物的剩余部分。
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6.发明申请公开(公告)号：US20090235836A1
公开(公告)日：2009-09-24
申请号：US12357303
申请日：2009-01-21
IPC分类号： F42B1/02
摘要： A shaped charge and a method of using such to provide for large and effective perforations in oil bearing sandy formations while causing minimal disturbance to the formation porosity is described. This shaped charge uses a low-density liner having a filler material that is enclosed by outer walls made, preferably, of plastic or polyester. The filler material is preferably a powdered metal or a granulated substance, which is left largely unconsolidated. The preferred filler material is aluminum powder, or aluminum particles, that are coated with an oxidizing substance, such as TEFLON®, permitting a secondary detonation reaction inside the formation following jet penetration. The filled liner is also provided with a metal cap to aid penetration of the gun scallops, the surrounding borehole casing and the cement sheath. The metal cap forms the leading portion of the jet, during detonation. The remaining portion of the jet is formed from the low-density filler material, thereby resulting in a more particulated jet. The jet results in less compression around the perforation tunnel and less skin damage to the proximal end of the perforation tunnel.
摘要翻译： 描述了一种成形装料和使用这种方法在含油砂层中提供大的和有效的穿孔，同时对地层孔隙度造成最小的干扰。 该成形装料使用具有由优选由塑料或聚酯制成的外壁包围的填料的低密度衬里。 填充材料优选为粉末状金属或粒状物质，其在很大程度上未被固化。 优选的填充材料是铝粉末或铝颗粒，其涂覆有氧化物质，例如TEFLON，其允许喷射穿透之后的地层内的次级爆炸反应。 填充衬里还设置有金属盖，以帮助枪扇贝，周围钻孔套管和水泥护套的穿透。 在爆炸期间，金属盖形成射流的引导部分。 射流的剩余部分由低密度填料形成，从而导致更多的雾化射流。 射流导致穿孔隧道周围的压缩较少，对穿孔隧道近端的皮肤损伤较少。
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公开(公告)号：US06655291B2
公开(公告)日：2003-12-02
申请号：US10083721
申请日：2002-02-26
申请人： Dan W. Pratt , David S. Wesson , John K. Rouse
发明人： Dan W. Pratt , David S. Wesson , John K. Rouse
IPC分类号： F42B102
CPC分类号： F42B1/032 , E21B43/117
摘要： A liner for a explosive shaped charge, such as those used in perforating operations in oil and gas wells, is formed from a powdered metal mixture that includes molybdenum. The molybdenum allows a higher density liner to be formed to create denser jets for achieving deeper penetration, but without the negative effect that often accompany the use of higher density materials. The molybdenum may be used in the amount of 0.5% to 25% by weight of the metal mixture, with tungsten and other constituents forming the remainder of the mixture.
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公开(公告)号：US06505559B1
公开(公告)日：2003-01-14
申请号：US09661359
申请日：2000-09-14
申请人： Johnny Joslin , David S. Wesson , Dan W. Pratt
发明人： Johnny Joslin , David S. Wesson , Dan W. Pratt
IPC分类号： F42B1028
摘要： A tubing and casing cutter is shown which can be assembled in the field from a plurality of pressed segmented pellets of free standing explosive material. The segmented pellets have a liner glued to at least one exposed face thereof. The pellets are glued to a backup plate with two mirror image plates being stacked to form a plate assembly. A plurality of plate assemblies are stacked within a surrounding container to form the cutter. The pressed pellets can also be assembled within a cup-shaped container to form a shaped charge.
摘要翻译： 示出了可以从多个自由站立的爆炸材料的压制分段颗粒在现场组装的管和套管切割器。 分段丸粒具有胶合到其至少一个暴露面的衬里。 将颗粒胶合到支撑板上，其中两个镜像板被堆叠以形成板组件。 多个板组件堆叠在周围的容器内以形成切割器。 压制的颗粒也可以组装在杯形容器中以形成成形装料。
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公开(公告)号：US6012392A
公开(公告)日：2000-01-11
申请号：US855806
申请日：1997-05-10
申请人： Kimball J. Norman , Dan W. Pratt
发明人： Kimball J. Norman , Dan W. Pratt
CPC分类号： F42B1/032 , B22F3/16 , F42B1/036 , B22F2998/10
摘要： Shaped charge liners are formed from an alloy of nickel, tin, and copper, which is first formed into a powder, and then pressed into strips. The pressed strips of powdered alloy are next sintered and then cold rolled. Thereafter, the powdered, pressed, and sintered alloy strips are formed into shaped charge liners, for example, by stamping. The shaped charge liners may be heat treated either before or after the forming step.
摘要翻译： 成形的充电衬垫由镍，锡和铜的合金形成，其首先形成粉末，然后压成条。 然后将压制的粉末状合金粉末烧结，然后冷轧。 此后，将粉末状，压制和烧结的合金条形成为成形的充电衬垫，例如通过冲压。 成形的充电衬垫可以在成形步骤之前或之后进行热处理。
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公开(公告)号：US09520219B2
公开(公告)日：2016-12-13
申请号：US11759126
申请日：2007-06-06
CPC分类号： F42D1/043 , E21B43/117 , G08B13/2437 , G08B13/2442 , H01F10/131 , H01L41/20 , Y10T29/49826 , Y10T428/239
摘要： A perforating gun includes a charge tube having shaped charges affixed thereto. Each shaped charge includes a radially outward pointing post adapted to receive a detonator cord. A retention member installed on the post provides a compressive force that energetically couples the detonator cord to the post. The radially outermost portion of the retention member is radially flush with or radially recessed relative to the radially outermost portion of each post. In one embodiment, the retention member has a rounded medial portion, a central opening and a pair of locking tabs that point radially inward to the central opening. Each post may include a slot for receiving the detonator cord and a circumferential groove that is adapted to receive the locking tabs.
摘要翻译： 射孔枪包括具有附着于其上的成形电荷的充电管。 每个成形装料包括适于接纳雷管绳的径向向外指向柱。 安装在柱上的保持构件提供了将雷管线能量地耦合到柱上的压缩力。 保持构件的径向最外部分相对于每个柱的径向最外部分径向相对或径向凹入。 在一个实施例中，保持构件具有圆形中间部分，中心开口和一对径向向内指向中心开口的锁定突片。 每个柱可以包括用于接收雷管线的槽和适于接收锁定突出部的周向槽。
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