Low dielectric zone for hydrocarbon recovery by dielectric heating

    公开(公告)号:US10704371B2

    公开(公告)日:2020-07-07

    申请号:US15783640

    申请日:2017-10-13

    Abstract: Embodiments include drilling a wellbore in a hydrocarbon-bearing formation, and the wellbore includes a radio frequency antenna destination portion that is configured to receive a radio frequency antenna; forming a low dielectric zone in the hydrocarbon-bearing formation proximate to the radio frequency antenna destination portion with a cavity based process or a squeezing based process; positioning the radio frequency antenna into the radio frequency antenna destination portion such that the radio frequency antenna is proximate to the low dielectric zone; dielectric heating the hydrocarbon-bearing formation with the radio frequency antenna such that the low dielectric zone increases dissipation of energy from the radio frequency antenna into the hydrocarbon-bearing formation; and extracting hydrocarbons from the heated hydrocarbon-bearing formation. The material has a dielectric constant of less than or equal to 20, a loss tangent of less than or equal to 0.4, and a porosity of less than or equal to 5%.

    LOW DIELECTRIC ZONE FOR HYDROCARBON RECOVERY BY DIELECTRIC HEATING

    公开(公告)号:US20190112906A1

    公开(公告)日:2019-04-18

    申请号:US15783640

    申请日:2017-10-13

    Abstract: Embodiments include drilling a wellbore in a hydrocarbon-bearing formation, and the wellbore includes a radio frequency antenna destination portion that is configured to receive a radio frequency antenna; forming a low dielectric zone in the hydrocarbon-bearing formation proximate to the radio frequency antenna destination portion with a cavity based process or a squeezing based process; positioning the radio frequency antenna into the radio frequency antenna destination portion such that the radio frequency antenna is proximate to the low dielectric zone; dielectric heating the hydrocarbon-bearing formation with the radio frequency antenna such that the low dielectric zone increases dissipation of energy from the radio frequency antenna into the hydrocarbon-bearing formation; and extracting hydrocarbons from the heated hydrocarbon-bearing formation. The material has a dielectric constant of less than or equal to 20, a loss tangent of less than or equal to 0.4, and a porosity of less than or equal to 5%.

    System For Extraction of Hydrocarbons Underground
    4.
    发明申请
    System For Extraction of Hydrocarbons Underground 有权
    地下提取烃类体系

    公开(公告)号:US20150322759A1

    公开(公告)日:2015-11-12

    申请号:US14746367

    申请日:2015-06-22

    Abstract: A system for in-situ heating of a subsurface formation for the extraction of hydrocarbons in underground deposits is disclosed. The system is configured to heat the underground deposit of hydrocarbons to facilitate fluid flow and hydrocarbon recovery from the underground deposit. The system has an antenna formed from a coaxial transmission line having an annular space between the transmission line outer conductor and the inner conductor and having one or more periodic aperture arrangements along the axial length of the outer conductor. A method for in-situ heating of a subsurface formation for recovering hydrocarbons contained therein is also disclosed. The method comprises: providing an antenna in the subsurface formation; providing electromagnetic RF power to the antenna for heating at least a portion of the subsurface formation.

    Abstract translation: 公开了一种用于地下加热地下地层以提取地下沉积物中的碳氢化合物的系统。 该系统被配置为加热烃的地下沉积物以促进流体流动并从地下沉积物中回收碳氢化合物。 该系统具有由同轴传输线形成的天线,该同轴传输线在传输线外部导体和内部导体之间具有环形空间,并具有沿着外部导体的轴向长度的一个或多个周期性孔径布置。 还公开了一种用于地下加热用于回收其中所含的烃的地下地层的方法。 该方法包括:在地下地层中提供天线; 向所述天线提供电磁RF功率以加热所述地下地层的至少一部分。

Patent Agency Ranking