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公开(公告)号：EP2841675B1
公开(公告)日：2017-12-06
申请号：EP13780628.7
申请日：2013-04-26
IPC分类号： E21B4/02
CPC分类号： E21B4/02
摘要： A downhole motor includes a bearing assembly (100) having a mandrel (10) rotatable within a cylindrical housing (20), with the mandrel co-rotatably engaging the rotor (120) of a concentric rotary drive system (110) incorporating an arrangement of housing-mounted gates (130) pivotably deflectable by rotor lobes (124) as the rotor rotates in response to fluid flow through an annular space (40) between the rotor and the housing, building up pressure in longitudinal chambers (140) formed between adjacent gates and lobes and thus inducing rotation of the mandrel. Preferably, the drive system is coupled directly to the bearing assembly, without need for a connecting driveshaft, and with the housing incorporating a bent sub (210) positioned above the drive section. Alternatively, a bent sub may be positioned below the drive system in conjunction with the use of a driveshaft to connect the drive system to the bearing section, in order to position the bend as close as possible to the bit.
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公开(公告)号：EP3077675A1
公开(公告)日：2016-10-12
申请号：EP14836650.3
申请日：2014-08-12
CPC分类号： F04C15/0007 , F01C1/322 , F01C1/40 , F01C19/02 , F01C21/0809 , F01C21/0836 , F01C21/106 , F01C21/108 , F04C2/322 , F04C2/3566 , F04C11/001 , F04C18/322 , F04C27/001
摘要： A concentric rotary fluid machine includes a first body and a second body that are rotatable relative to each other and coaxially arranged one inside the other. A plurality of gates are supported by the second body in gate pockets. Each gate pocket includes: a gate retention recess that receives a gate cylinder of a gate; a gate seal recess that receives a sealing portion of a gate; and an intervening land. The sealing portion is configured to reciprocate up and down within a corresponding gate seal recess while maintaining contact with the recess and the second body. A plurality of lobes on the first body cause the gates to swing about respective swing axes as the first body rotates relative to the second body. The lobes and the lands are configured so that a lobe forms a substantial seal against a land when in mutual radial alignment.
摘要翻译： 同心旋转流体机器包括可相对于彼此旋转并同轴地布置在另一个内部的第一主体和第二主体。 多个门由门口袋中的第二主体支撑。 每个门口袋包括：接纳门的门柱的门保持凹部; 门密封凹部，其容纳门的密封部分; 和一个干预的土地。 密封部分构造成在相应的门密封凹部内上下往复运动，同时保持与凹部和第二主体的接触。 当第一主体相对于第二主体旋转时，第一主体上的多个凸起使得门围绕相应的摆动轴摆动。 凸起和凸起构造成使得当相互径向对准时，凸角形成相对于脊部的实质密封。
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公开(公告)号：EP2841675A1
公开(公告)日：2015-03-04
申请号：EP13780628.7
申请日：2013-04-26
CPC分类号： E21B4/02
摘要： A downhole motor includes a bearing assembly (100) having a mandrel (10) rotatable within a cylindrical housing (20), with the mandrel co-rotatably engaging the rotor (120) of a concentric rotary drive system (110) incorporating an arrangement of housing-mounted gates (130) pivotably deflectable by rotor lobes (124) as the rotor rotates in response to fluid flow through an annular space (40) between the rotor and the housing, building up pressure in longitudinal chambers (140) formed between adjacent gates and lobes and thus inducing rotation of the mandrel. Preferably, the drive system is coupled directly to the bearing assembly, without need for a connecting driveshaft, and with the housing incorporating a bent sub (210) positioned above the drive section. Alternatively, a bent sub may be positioned below the drive system in conjunction with the use of a driveshaft to connect the drive system to the bearing section, in order to position the bend as close as possible to the bit.
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