Endura® Dual-String Section Mill

Plug and abandon
in half the time 

Mill adjacent strings and achieve verifiable well integrity.

The Endura® dual-string section mill creates your preferred abandonment environment—a stable, permanent, and verifiable rock-to-rock barrier—and halves the P&A rig time average. The barrier seals across the borehole by milling both inner and outer strings and mimics natural bedding.

Set a rock-to-rock barrier and know that it’s done right

Expose more of the rock face, faster

Cutting-edge blades

Based on RipTide® drilling reamer technology, the mill features separate stabilizers and specially designed 4.5- to 13-in.-long carbide cutting structures that enable through-casing milling of the adjacent casing string. The inserts cut radially and axially downward to improve milling and create finer, more manageable cuttings.

Cutting-edge blades

Reduce milling time by half

The ideal cement-to-formation bond

To plug and abandon a typical offshore well, the technology mills through the 9 5/8-in. casing like any other section mill. The difference lies in trips dedicated to the outer string. The Endura dual-string section mill passes through the restricted ID of the 9 5/8-in. casing string to the open section.

Hydraulic stabilizers expand inside the 13 3/8-in. outer casing to centralize the tool. The full-gauge cut-out blades remove approximately 15 ft of casing to prepare for milling. Using advanced cutting technologies that improve swarf-handling and reduce birdnesting, the mills engage and then mill through the remaining section of outer casing.

The ideal cement-to-formation bond

Our client saved 5 days of rig time and reduced overall risk

Field-proven results

One operator faced top-up cement in the annulus between the 9 5/8- and 13 3/8-in. casing strings in an offshore gas well and could not cut and pull casing as planned. Weatherford deployed the Endura dual-string section mill and safely exposed a 98-ft section of formation. The operation not only provided a verifiable rock-to-rock barrier, but also saved the customer 5 days of rig time.

Field-proven results

Submit Your Questions on Setting a Rock-to-Rock Barrier

Our technology delivers the best barrier in the business: a rock-to-rock hydraulic seal across the borehole that mimics natural bedding, mitigates gas migration, eliminates channeling, and can be verified with a pressure test. To learn how our services and technologies can work for you, please complete the contact form and one of our technology experts will be in touch.