Delaware Basin Operator Maximizes Performance

Case Study

Performance Alert

Delaware Basin Operator Maximizes Performance in a Build, Hold, and Drop Application with the D-Tech RST900

THE CHALLENGE
- An operator drilling in the Delaware Basin wasn’t able to steer to the well plan and maintain reliability with a competitor’s rotary steerable system (RSS) in a 12 ¼-in. build, hold, and drop application.
- They had experienced multiple short-hour/short-footage failures, causing them to feel the technology wasn’t an economical option to drill the section.
THE SOLUTION
- A D-Tech RST900 rotary steerable tool, combined with an 8-in. 7/8 5.9 mud motor and directional drill bit, was selected to drill the intermediate section.
- The operator completed the 7,365-ft tangent in 137 total drilling hours, achieving an overall average rate of penetration (ROP) of 54 ft/hour.
- The crew was able to kick off the tangent angle, control the build rates, and keep the dogleg severity to a minimum.
- D-Tech provided a 24-hr remote monitoring team to help maximize performance and paint the line on a 9-degree tangent.
THE BENEFIT
- The D-Tech RSS achieved the target inclination and held it until the desired wellbore separation was reached at approximately 6,800-ft md.
- Once back to vertical, the RSS maintained less than one degree of inclination through an abrasive drilling environment and reached KOP without issue.
- The client was pleased with the RST900 tool’s ability to reliably reach total depth (TD) on schedule, while maintaining the well plan.

Details

Location

Delaware Basin

Hole Size & angle

12 ¼-in. build, hold, and drop application; 9-degree tangent

total footage

7,365-ft tangent

hours & rop

137 total drilling hours; avg ROP of 54 ft/hour

Depth

Reached TD on schedule, while maintaining the well plan

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