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](/getmedia/3ec32250-06b9-465a-8a02-6a6f6c10c8a3/Cutting-edge-blades.jpg?width=590)
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](/getmedia/0bfca49b-06bd-437a-9ed0-0f8d820b2a97/The-ideal-cement-to-formation-bond.jpg?width=590)
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](/getmedia/adce439b-f5ab-40e9-97af-f338ae8893ee/Field-proven-results.jpg?width=590)