Detection of formation structures using electromagnetic coupling measurements
AssigneeSchlumberger Technology Corporation
InventorsEMMANUEL LEGENDRE, Fabienne Legendre
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Abstract
The present disclosure relates to a method to determine a characteristic of a subsurface formation using electromagnetic coupling components. A downhole logging tool having one or more transmitters and one or more receivers, and being capable of measuring the electromagnetic coupling components is provided. The electromagnetic coupling components are measured using the downhole logging tool and used to form a 3-D Lateral Indicator and/or a 3-D Longitudinal Indicator. The 3-D Lateral Indicator and/or the 3-D Longitudinal Indicator are used to determine the characteristic of the subsurface formation.
Claims20
A method to determine a characteristic of a subsurface formation using electromagnetic coupling components, comprising:
- providing a downhole logging tool having one or more transmitters and one or more receivers, and being capable of measuring the electromagnetic coupling components;
- measuring the electromagnetic coupling components using the downhole logging tool;
- forming a 3-D Lateral Indicator and/or a 3-D Longitudinal Indicator using the electromagnetic coupling components;
- and
- using the 3-D Lateral Indicator and/or the 3-D Longitudinal Indicator to determine the characteristic of the subsurface formation.
A method to determine a characteristic of a subsurface formation using electromagnetic coupling components, comprising:
- providing a downhole logging tool having one or more transmitters and one or more receivers, and being capable of measuring the electromagnetic coupling components;
- measuring the electromagnetic coupling components using the downhole logging tool;
- forming measurement categories comprising a DC-measurement category, a 1H-measurement category, and a 2H-measurement category using the electromagnetic coupling components;
- defining a Property 2 property and a Property 3 property using one or more of the measurement categories;
- forming a 3-D Lateral Indicator using the Property 2 property and/or forming a 3-D Longitudinal Indicator using the Property 3 property;
- and
- using the 3-D Lateral Indicator and/or the 3-D Longitudinal Indicator to determine the characteristic of the subsurface formation.
A downhole logging tool, comprising:
- one or more transmitters and one or more receivers, capable of measuring electromagnetic coupling components;
- and
- a downhole processor that computes a 3-D Lateral Indicator and/or a 3-D Longitudinal Indicator using the electromagnetic coupling components.
Dependencies are inferred from the claim text.