公开(公告)号：US20190112906A1

公开(公告)日：2019-04-18

申请号：US15783640

申请日：2017-10-13

Applicant: Chevron U.S.A. Inc.

Inventor： Gunther H. Dieckmann ,  Michal Mieczyslaw Okoniewski ,  Cesar Ovalles ,  Pedro Vaca ,  James Dunlavey ,  Donald Kuehne

IPC: E21B43/24 ,  E21B33/14

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%.

公开(公告)号：US10693237B2

公开(公告)日：2020-06-23

申请号：US15484751

申请日：2017-04-11

Applicant: Chevron U.S.A. Inc.

Inventor： Michal Mieczyslaw Okoniewski ,  Damir Pasalic ,  Gunther Hans Dieckmann ,  James Thomas Dunlavey

IPC: H01Q9/28 ,  H01Q9/22 ,  H01Q1/04 ,  H01P11/00

Abstract: A method of making a subsurface antenna which has an assymetric radiation pattern. The assymetric radiation pattern radiates electromagnetic waves unequally into two regions.

公开(公告)号：US10704371B2

公开(公告)日：2020-07-07

申请号：US15783640

申请日：2017-10-13

Applicant: Chevron U.S.A. Inc.

Inventor： Gunther H. Dieckmann ,  Michal Mieczyslaw Okoniewski ,  Cesar Ovalles ,  Pedro Vaca ,  James Dunlavey ,  Donald Kuehne

IPC: E21B43/24 ,  E21B33/13 ,  E21B33/14 ,  E21B7/28

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%.

公开(公告)号：US20170222297A1

公开(公告)日：2017-08-03

申请号：US15484751

申请日：2017-04-11

Applicant: Chevron U.S.A. Inc.

Inventor： Michal Mieczyslaw Okoniewski ,  Damir Pasalic ,  Gunther Hans Dieckmann ,  James Thomas Dunlavey

IPC: H01Q1/04 ,  H01P11/00 ,  H01Q9/28

Abstract: A subsurface antenna is designed for use below the surface of the Earth. In some configurations the antenna is a dipole antenna, which can be used for radio frequency heating of an oil-bearing formation.