18468942. SYSTEMS AND METHODS FOR PROXIMITY DETECTION AND INTERPRETATION OF NEAR PARALLEL CASED WELLS simplified abstract (Schlumberger Technology Corporation)

SYSTEMS AND METHODS FOR PROXIMITY DETECTION AND INTERPRETATION OF NEAR PARALLEL CASED WELLS

Organization Name

Schlumberger Technology Corporation

Inventor(s)

Yong-Hua Chen of Belmont MA (US)

Saad Omar of Somerville MA (US)

Michael Thiel of Watertown MA (US)

Lin Liang of Belmont MA (US)

SYSTEMS AND METHODS FOR PROXIMITY DETECTION AND INTERPRETATION OF NEAR PARALLEL CASED WELLS - A simplified explanation of the abstract

This abstract first appeared for US patent application 18468942 titled 'SYSTEMS AND METHODS FOR PROXIMITY DETECTION AND INTERPRETATION OF NEAR PARALLEL CASED WELLS

Simplified Explanation

The abstract describes a workflow for interpreting ultradeep harmonic anisotropic attenuation (UHAA) measurements to estimate the distance and orientation of an existing cased well from a new well being drilled.

• The ranging workflow involves deploying a deep directional resistivity (DDR) tool into the new wellbore.
• UHAA data is collected via the DDR tool, and resistivity values are determined based on this data.
• The distance of the DDR tool from the casing of the existing wellbore is determined based on the resistivity values and a UHAA response table for the DDR tool.

Potential Applications

This technology can be applied in the oil and gas industry for accurately determining the location of existing wells while drilling new ones.

Problems Solved

This technology solves the problem of accurately estimating the distance and orientation of cased wells from new wellbores, which is crucial for avoiding collisions and optimizing drilling operations.

Benefits

The benefits of this technology include increased safety by preventing well collisions, improved drilling efficiency, and cost savings by reducing the risk of costly drilling mistakes.

Potential Commercial Applications

Potential commercial applications of this technology include oil and gas exploration and production companies, drilling contractors, and wellbore surveying service providers.

Possible Prior Art

One possible prior art could be the use of resistivity measurements in wellbore surveying and formation evaluation, but the specific application of UHAA measurements for estimating the distance and orientation of cased wells may be a novel innovation.

How does this technology compare to existing methods for wellbore ranging?

This article does not provide a direct comparison to existing methods or technologies for wellbore ranging. It would be helpful to understand the advantages and limitations of this new approach compared to traditional methods.

What are the potential limitations or challenges in implementing this technology in different geological formations?

The article does not address the potential limitations or challenges that may arise when implementing this technology in various geological formations. It would be important to consider how different rock types, formations, and well conditions could impact the accuracy and reliability of the ranging workflow.

Original Abstract Submitted

A ranging workflow to interpret the ultradeep harmonic anisotropic attenuation (UHAA) measurements and estimate the distance and orientation of the existing cased well from the well being drilled is presented herein. The ranging workflow applies to scenarios in which the wells are near parallel to each other and performs reasonably well in boreholes which are more or less perpendicular to the formation layers. The ranging workflow generally includes deploying a deep directional resistivity (DDR) tool into a new wellbore; collecting UHAA data via the DDR tool; determining resistivity values based at least in part on the UHAA data; and determining a distance of the DDR tool from a casing of an existing wellbore proximate the new wellbore based at least in part on the resistivity values and a UHAA response table for the DDR tool.