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公开(公告)号：US10731436B2
公开(公告)日：2020-08-04
申请号：US16195642
申请日：2018-11-19
发明人： Gregory Wayne Allen , Keith David Farquharson , Dean Ashley Beblow , Glen Murray Eleniak , Jerry Wakeford
IPC分类号： E21B33/068 , E21B34/02 , E21B43/26 , E21B34/00
摘要： A ball injector for connecting below the frac head of a frac tree to accommodate and sequentially drop a ball into the axial passageway of the frac tree. The ball injector has an axial passage of an injector housing aligned with the axial passageway of the frac tree. A ball cartridge assembly stores one or more balls and sequentially delivers one ball to a port in the ball cartridge assembly. A ball launch side arm extends from the injector housing and forms a ball launch passageway communicating between the ball cartridge port and the axial passage. A first valve member in the ball launch passageway is opened to pass the ball into the axial passage, and is closed to isolate the ball cartridge assembly from a pressure in the axial passage. A second valve member between the first valve member and the ball cartridge assembly may be included to form a pressure isolation chamber between the valve members. Embodiments of ball cartridge assemblies to horizontally store a plurality of balls is provided. Also provided is a method of delivering a ball into a frac tree below the frac head, and a method of delivering and monitoring a ball progression into the frac tree, for example with a camera.
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公开(公告)号：US20140299797A1
公开(公告)日：2014-10-09
申请号：US14310852
申请日：2014-06-20
发明人： Tianle GUO , Tony M. Lam , Keith David Farquharson
IPC分类号： E21B33/06
CPC分类号： E21B33/062 , E21B2033/005
摘要： A ram type blowout preventer having a seal on each ram, extending across the front face, rearwardly and then over the top portion or the bottom portion of the ram. Each ram forms a leading edge portion above or below the front face seal, so as opposing rams move into the extended sealing position, the leading edge portions of the rams press against each other, imparting a generally vertical movement to bring the seals on the front faces into sealing engagement with each other and to energize the seals extending over the top or bottom portions against the ram bores. The front face of each ram may include a portion which is inclined toward the central bore. Rope packing seals may be provided on the rams having a vertical offset at the front faces of the rams such that rope packing seals on opposing front faces seal against each other.
摘要翻译： 一种冲压式防喷器，其在每个冲头上具有密封，在前冲头的前表面，后方，然后在冲头的顶部或底部之上延伸。 每个压头在正面密封件的上方或下方形成前缘部分，因此相对的凸起移动到延伸的密封位置，凸起的前缘部分彼此压靠，赋予大致垂直的运动以使密封件在前面 面对彼此进行密封接合，并使靠在顶部或底部上延伸的密封件抵靠压头孔。 每个冲头的前表面可以包括朝向中心孔倾斜的部分。 绳索填料密封件可以设置在公柱上，在公柱的正面具有垂直偏移，使得在相对的前表面上的绳索密封件密封彼此。
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公开(公告)号：US10161218B2
公开(公告)日：2018-12-25
申请号：US15059033
申请日：2016-03-02
发明人： Gregory Wayne Allen , Keith David Farquharson , Dean Ashley Beblow , Glen Murray Eleniak , Jerry Wakeford
IPC分类号： E21B33/068 , E21B34/02 , E21B43/26 , E21B34/00
摘要： A ball injector for connecting below the frac head of a frac tree to accommodate and sequentially drop a ball into the axial passageway of the frac tree. The ball injector has an axial passage of an injector housing aligned with the axial passageway of the frac tree. A ball cartridge assembly stores one or more balls and sequentially delivers one ball to a port in the ball cartridge assembly. A ball launch side arm extends from the injector housing and forms a ball launch passageway communicating between the ball cartridge port and the axial passage. A first valve member in the ball launch passageway is opened to pass the ball into the axial passage, and is closed to isolate the ball cartridge assembly from a pressure in the axial passage. A second valve member between the first valve member and the ball cartridge assembly may be included to form a pressure isolation chamber between the valve members. Embodiments of ball cartridge assemblies to horizontally store a plurality of balls is provided. Also provided is a method of delivering a ball into a frac tree below the frac head, and a method of delivering and monitoring a ball progression into the frac tree, for example with a camera.
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公开(公告)号：US09243469B2
公开(公告)日：2016-01-26
申请号：US14310852
申请日：2014-06-20
发明人： Tianle Guo , Tony M. Lam , Keith David Farquharson
CPC分类号： E21B33/062 , E21B2033/005
摘要： A ram type blowout preventer having a seal on each ram, extending across the front face, rearwardly and then over the top portion or the bottom portion of the ram. Each ram forms a leading edge portion above or below the front face seal, so as opposing rams move into the extended sealing position, the leading edge portions of the rams press against each other, imparting a generally vertical movement to bring the seals on the front faces into sealing engagement with each other and to energize the seals extending over the top or bottom portions against the ram bores. The front face of each ram may include a portion which is inclined toward the central bore. Rope packing seals may be provided on the rams having a vertical offset at the front faces of the rams such that rope packing seals on opposing front faces seal against each other.
摘要翻译： 一种冲压式防喷器，其在每个冲头上具有密封，在前冲头的前表面，后方，然后在冲头的顶部或底部之上延伸。 每个压头在正面密封件的上方或下方形成前缘部分，因此相对的凸起移动到延伸的密封位置，凸起的前缘部分彼此压靠，赋予大致垂直的运动以使密封件在前面 面对彼此进行密封接合，并使靠在顶部或底部上延伸的密封件抵靠压头孔。 每个冲头的前表面可以包括朝向中心孔倾斜的部分。 绳索填料密封件可以设置在公柱上，在公柱的正面具有垂直偏移，使得在相对的前表面上的绳索密封件密封彼此。
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公开(公告)号：US11047486B2
公开(公告)日：2021-06-29
申请号：US15901719
申请日：2018-02-21
摘要： An expanding gate valve and method is provided for bidirectional sealing capability against pressure, whether the direction of pressure is upstream or downstream. The bidirectional annular seat seals against the gate assembly against pressure from the normal wellhead direction, typically upstream. For sealing against pressure in the opposite direction, the seat is formed with an annular recess extending radially outwardly from the central bore of the annular seat so that a flex portion of the seat formed between the recess and the front sealing face of the annular seat at the central bore flexes toward the gate assembly against this pressure. The front face of the bidirectional seat forms a raised annular sealing portion on the flex portion of the seat adjacent the central bore to provide sealing contact with the gate assembly in the expanded condition when the flex portion flexes toward the gate assembly.
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