Systems and methods for marker inclusion in a wellbore
AssigneeDynaEnergetics Europe GmbH
InventorsAndreas Robert Zemla, Thilo Scharf, Liam McNelis, Christian Eitschberger, Shmuel Silverman
Life of this patent
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Abstract
A system and a method for determining a location of an untethered drone in a wellbore are described herein. The system includes one or more markers to be placed within a wellbore casing where each of the one or more markers is configured to transmit a continuous or periodic signal. The system further includes a first sensor to be transported by the untethered drone where the first sensor is configured to sense an existence of the one or more markers.
Claims16
A system for determining a location of an untethered drone in a wellbore, the system comprising:
- a first circlet including a plurality of markers disposed around a circumference of a wellbore casing, the plurality of markers including a first marker configured to transmit a first periodic signal during a first time period, and a second marker configured to transmit a second periodic signal during a second time period, the first time period and the second time period being different time periods;
- and
- a first sensor connected to the untethered drone, wherein the first sensor is configured for sensing at least one of the first periodic signal or the second periodic signal.
A system for determining a location of an untethered drone in a wellbore, the system comprising:
- a plurality of receiving zones defined by a plurality of respective circlets positioned within a wellbore casing in an axially spaced relation to one another, the plurality of circlets including a first circlet having a plurality of markers disposed around a circumference of the wellbore casing, the plurality of markers including a first marker configured to transmit a first periodic signal during a first time period, and a second marker configured to transmit a second periodic signal during a second time period, the first time period and the second time period being different time periods;
- and
- a marker receiver configured to be transported into the wellbore casing by the untethered drone, wherein the marker receiver is configured for receiving at least one of the first periodic signal or the second period signal,
- wherein a first receiving zone of the plurality of receiving zones does not overlap a second receiving zone of the plurality of receiving zones or the marker receiver is configured to distinguish between the first receiving zone and the second receiving zone.
A method for determining a location of an untethered drone in a wellbore, the method comprising:
- receiving, at a sensor connected to an untethered drone, a first indication of the untethered drone at a first receiving zone within a wellbore casing, wherein the first receiving zone is defined by a plurality of first markers of a first circlet that is positioned within the wellbore casing, the plurality of first markers including a first marker configured to transmit a first periodic signal during a first time period, and a second marker configured to transmit a second periodic signal during a second time period, the first time period and the second time period being different time periods, wherein the first indication is the first periodic signal or the second periodic signal;
- receiving, at the sensor, a second indication of the untethered drone at a second receiving zone within the wellbore casing, wherein the second receiving zone is defined by a plurality of second markers of a second circlet that is positioned within the wellbore casing;
- and
- determining, via a processor, a relative location or distance of the untethered drone within the wellbore casing based on the first indication and the second indication.
Dependencies are inferred from the claim text.