公开(公告)号：US20090038848A1

公开(公告)日：2009-02-12

申请号：US11836238

申请日：2007-08-09

申请人： Fernando Garcia-Osuna

发明人： Fernando Garcia-Osuna

IPC分类号： E21B47/12 ,  G08C19/00

CPC分类号： E21B41/0085 ,  E21B17/003 ,  H01L41/0833 ,  H02N2/181 ,  H02N2/186

摘要： An electric power generator includes a conduit disposed in a wellbore penetrating subsurface formations and at least one piezoelectric transducer in contact with the conduit. The piezoelectric transducer is configured to undergo stress in response to vibration in the conduit. The transducer includes a plurality of piezoelectric crystals stacked in a thickness direction and each polarized in the thickness direction. The transducer comprises at least one of a composite rubber layer disposed between successive piezoelectric crystals, and at least one support at a longitudinal end of the transducer configured to cause the crystals to bend in response to vibration in the conduit.

摘要翻译： 发电机包括设置在穿透地下地层的井眼中的导管和与导管接触的至少一个压电换能器。 压电换能器被配置为响应于管道中的振动而经受应力。 换能器包括沿厚度方向堆叠并在厚度方向各自偏振的多个压电晶体。 换能器包括设置在连续的压电晶体之间的复合橡胶层中的至少一个，以及在换能器的纵向端处的至少一个支撑件，其被配置为响应于导管中的振动而使晶体弯曲。