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US 11,454,091 B2Granted
Sensing and recording module within an untethered object acting as a pressure differential isolation of well fluid
OwnerGregoire Max Jacob, Sylvain Bedouetinventors
Life of this patent
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Abstract
An untethered sensing object able to sense and record well fluid and wellbore parameters. The untethered sensing object is adapted to perform, in addition, a well fluid isolation with a plugging element previously placed inside the wellbore.
Claims18
A method comprising:
- placing an untethered sensing object inside a well fluid of a wellbore,
- whereby the untethered sensing object can perform sensing and data recording of well fluid and wellbore parameters, and
- whereby the untethered sensing object includes at least one sensor and an external shell with at least one cross-sectional circular shape, and
- wherein the external shell contains one or more connecting channels, wherein the one or more connecting channels connect the wellbore fluid to the sensor;
- sensing and data recording of well fluid and wellbore parameters by the untethered sensing object while being in the well fluid;
- conveying the untethered sensing object within the well fluid of the wellbore;
- stopping the untethered sensing object at a previously placed plugging element inside the wellbore, wherein the plugging element comprises a cross-sectional restriction with a flow-through area, including a contact line matching the at least one cross-sectional circular shape of the external shell of the untethered sensing object;
- and
- performing an isolation of well fluid across the contact line between the untethered sensing object and the plugging element.
6 more elements
An apparatus, for use inside a well fluid of a wellbore, comprising:
- a plugging element including:
- a cross-sectional restriction of the wellbore with a flow-through area, and
- a contact line along the cross-sectional restriction;
- and
- an untethered sensing object including:
- at least one sensor,
- an acquisition and data recording module, and
- an external shell;
- and
- wherein the at least one sensor senses the well fluid and wellbore properties and converts the measurement into an electrical signal;
- wherein the acquisition and data recording module collects the electrical signal from the at least one sensor;
- wherein the contact line along the cross-sectional restriction of the plugging element is a continuous edge around the flow-through area;
- wherein the external shell of the untethered sensing object includes at least one cross-sectional circular shape able to stop on the contact line along the cross-sectional restriction of the plugging element;
- wherein the external shell contains one or more connecting channels, wherein the one or more connecting channel connects the wellbore fluid to the sensor;
- and
- wherein the contact line provides an isolation of well fluid able to ensure a pressure differential, between 100 and 20,000 psi, [0.7 MPa and 140 MPa] across the untethered sensing object and the plugging element inside the wellbore.
13 more elements
Dependencies are inferred from the claim text.