🛢️ South Shell 1-27-15H

IRON OIL OPERATING, LLC · Mountrail County, ND · File #42360 · Generated 2026-08-22 00:57

API: 3306105590
Target Formation: Middle Bakken
Confidence: High

📊 Signals (6)

Tier	Signal	Date	Service Impact
Tier 2	Wet shoe sub design with cemented lateral but no ability to frac out shoe, requiring bridge plug at toe 📄 Well Construction Diagram and notes Unconventional completion design: 4-1/2" liner cemented with wet shoe sub at toe for injection, but cannot frac out shoe. Requires wireline-set bridge plug (Alpha Oil Tools Model B-1 specified) before stimulation. Increases completion complexity.	Unknown	Completions / Frac
Tier 3	Open hole log waiver approved based on offset well data, requiring only GR-CBL from TD to ground level 📄 Sundry Form for Request for Consideration/Waiver Operator secured regulatory approval to skip standard open hole logging, reducing drilling time and costs by relying on offset well (Hallingstad 27 1H) data. This indicates confidence in subsurface predictability and potential for similar waivers on nearby wells.	2026-03-25	Regulatory / Permitting
Tier 3	Mandatory core and sample collection with strict 30-day (cuttings) and 180-day (cores) submission deadlines after drilling completion⏰ TIME-SENSITIVE 📄 Letter from State Geologist regarding cores and samples Regulatory requirement with fixed deadlines and significant penalties ($12,500 per offense, daily violations). Cuttings must be collected from Base of Last Charles Salt at specific intervals (30' vertical, 200' horizontal).	2025-10-13	General Oilfield Services
Tier 3	Off-spacing well location requiring executed surface use agreement with landowner (J.G. Acres LLC) 📄 Operator Assertions and Affidavit of Off Unit Well Location Well is located outside target spacing unit (NWNW 34-154N-89W) but within 1920-acre unit. Requires specific surface agreement, indicating potential land access complexities and pre-construction negotiations.	2025-09-30	Drilling Rigs
Tier 3	Pre-spud notification requirement to NDIC Field Inspector Calob Were (701-822-0147) prior to location construction⏰ TIME-SENSITIVE 📄 Permit Stipulations Mandatory direct contact with specific field inspector before construction begins. Indicates heightened regulatory oversight for this location.	Relative	General Oilfield Services
Tier 3	Anti-collision measures include staying 200/300 ft from active vertical wellbores and fracture stimulation size reductions near active wells 📄 Proposed Work section Operator has pre-planned mitigation for nearby wellbores (including Hallingstad 27 1H and Shell 1-3-34H). This indicates complex wellbore proximity requiring modified frac designs.	Unknown	Directional Drilling

💡 Operator Intent

Accelerate drilling and reduce costs by leveraging offset well data to waive open hole logs

Waiver request cites Hallingstad 27 1H within a mile as sufficient for formation tops, opting only for GR-CBL.
Develop multi-well pad with coordinated surface construction and future well planning

Documents reference South Shell 2-27-15H on same pad, with shared access road, earthwork plans, and pad layout designed for multiple wells.
Mitigate subsurface risk through detailed anti-collision planning and frac design adjustments

Anti-collision measures specify distance buffers and frac size reductions near active wellbores, indicating proactive geosteering and completion planning.
Ensure regulatory compliance through pre-emptive notifications and documented agreements

Affidavits for off-unit location, surface use agreement with J.G. Acres LLC, and mandatory inspector contact prior to construction show emphasis on avoiding permitting delays.

🔧 Service Operator Relevance

Cuttings/Sample Management

Strict 30-day deadline for sample submission after drilling completion. Requires immediate collection, processing, and shipping to state core library.

Wireline Services

Need for GR-CBL logging (due to waiver) and wireline-set bridge plug at wet shoe sub. Must be scheduled post-drilling but pre-frac.

Environmental/Waste Disposal

Pre-selected cuttings disposal vendor (Roughrider Disposal) but subject to change. Also requires leak-proof filter sock container on site from spud through flowback.

Surveying & Anti-Collision Monitoring

Complex wellbore proximity requires continuous survey verification (100' vertical, 30' curve, 90' lateral) and anti-collision monitoring during drilling.

Completion Services

Wet shoe sub design with cemented lateral but no shoe frac ability creates specific need for bridge plug isolation and potential pump-down perforating operations.