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Brookside Energy Limited (ASX:BRK) has reached a major drilling milestone at its Sabres 2-1-1S-3W SXH1 well located in the SWISH Area of Interest within Oklahoma's Anadarko Basin. The company has successfully set and cemented intermediate casing, landed the curve in the Sycamore Formation, and is currently drilling through the lateral section, with the well reaching about 9,800 feet measured depth. This progress eliminates several critical drilling risks and positions Brookside to advance toward production casing installation before transitioning to the adjacent Whalers well.
Key Highlights
- Brookside Energy Limited (ASX:BRK) operates as an oil and gas producer focused on the Anadarko Basin in the U.S.
- The Sabres well has reached the intermediate casing point with 9⅝-inch casing successfully run, cemented, and pressure tested
- The well curve has been landed at the planned location in the Sycamore Formation, with drilling progressing through the roughly 1.5-mile lateral section
- Brookside holds approximately 70% working interest in both Sabres and Whalers wells as part of the two-well Suttles pad development program
- Successful intermediate casing installation and curve landing have retired key construction and drilling risks
- The Whalers well will target the Woodford Formation after Sabres lateral completion
Brookside's Strategic Focus on the SWISH Play in Anadarko Basin
Brookside Energy Limited is a U.S.-focused oil and gas producer operating within the Anadarko Basin, one of North America's most prolific hydrocarbon regions. The company has concentrated its position in the SWISH Play, building a growing production base alongside a substantial reserve inventory and a robust drilling runway. This focused geographic strategy enables Brookside to capitalize on operational expertise and infrastructure efficiencies across its assets.
Brookside’s approach emphasizes disciplined development, maintaining a strong balance sheet, and capital allocation aimed at compounding per-share value over time. By concentrating operations within the SWISH Play rather than diversifying geographically, the company aims to efficiently scale production and optimize operational and financial synergies within a proven hydrocarbon basin.
Intermediate Casing Successfully Installed and Pressure Tested at Sabres Well
The Sabres well has reached the planned intermediate casing depth with 9⅝-inch casing successfully run and cemented. This critical step secures the upper wellbore, isolating it from hazards and fluid migration risks. A subsequent pressure test confirmed the integrity of the casing installation, validating that the casing shoe and cement meet design specifications.
Following the pressure test, drilling resumed through the casing shoe into the curve section, marking a significant milestone that confirms the upper wellbore’s stability and allows safe progression to the next drilling phase. This achievement mitigates several key well-construction and drilling risks, reducing operational uncertainty for the remainder of the program.
Curve Successfully Landed in Sycamore Formation at Targeted Location
The well curve has been precisely landed at the planned point within the Sycamore Formation, aligning the well on its intended trajectory through the target zone. This technical accomplishment in directional drilling requires careful coordination of surface operations, wellbore geometry, and geological targeting to maximize exposure to the productive interval.
Accurate curve placement is vital for unconventional well development, as the lateral orientation and depth directly impact reservoir drainage and recovery. The successful curve landing confirms that the well design has been executed as planned, enabling confident advancement through the lateral section and preparation for production casing operations.
Lateral Drilling Progresses with Well at Approximately 9,800 Feet Measured Depth
Drilling is ongoing through the roughly 1.5-mile lateral section of the Sabres well, with the well currently at about 9,800 feet measured depth. This lateral represents the primary productive interval designed to maximize contact with the Sycamore Formation while balancing operational efficiency and cost.
The well’s advancement reflects steady progress in the Suttles pad development program. Following successful curve landing, the company is advancing toward the target depth and plans to run and cement production casing next.
Production Casing Installation and Transition to Whalers Well Planned
After completing lateral drilling, Brookside will run and cement production casing to isolate the productive interval and establish the flow path from reservoir to surface. This step is the final major construction phase before completion and tie-in.
Subsequently, the rig will move to the adjacent Whalers well, targeting the Woodford Formation. The Whalers well is the second well in the two-well Suttles pad program announced on 7 July 2026. This sequential drilling maintains operational momentum and rig continuity, while targeting a different productive formation for diversified production potential.
Brookside Holds Approximately 70% Working Interest in Sabres and Whalers Wells
Brookside owns about 70% working interest in both Sabres and Whalers wells, entitling the company to a proportional share of production revenues and requiring it to bear corresponding operating costs and capital expenditures.
This significant interest underscores Brookside’s commitment to the Suttles pad development and positions it to capture meaningful production and cash flow once wells are operational. The remaining 30% interest is held by partners, facilitating operational and financial collaboration.
Two-Well Suttles Pad Program Reflects Multi-Phase Growth Strategy
Announced on 7 July 2026, the Suttles pad program involves developing two wells from a single location within the SWISH Play: Sabres targeting the Sycamore Formation and Whalers targeting the Woodford Formation. This multi-well, multi-formation strategy maximizes capital efficiency by sharing infrastructure while developing multiple productive intervals.
The approach supports Brookside’s goal to scale production efficiently by optimizing drilling and completion operations, reducing costs, and accelerating production ramp-up. Sequential drilling enables steady progress and effective resource management.
Key Well Construction Risks Mitigated Through Intermediate Casing and Curve Landing
David Prentice, Brookside’s managing director and CEO, highlighted that setting and pressure testing intermediate casing and successfully landing the curve have eliminated several major well-construction and drilling risks. This progress reduces uncertainties that could affect well completion, productivity, or recovery.
With these risks retired, the company can focus on reaching target depth, installing production casing, and advancing to the Whalers well, enhancing investor confidence in the well’s timeline and productivity potential.
Forward Drilling Plan Emphasizes Operational Momentum and Risk Management
Following intermediate casing and curve landing success, the Sabres drilling team is concentrating on reaching the planned target depth, running and cementing production casing, then moving to drill the Whalers well. This clear operational plan provides transparency on near-term development progress.
The structured approach aligns with industry best practices, with each drilling phase building on the previous to ensure safe, efficient well construction. Brookside’s focus on maintaining momentum and executing planned operations sequentially underscores its professional management of the drilling program.
