🛢️ STEPANEK 5201 13-18 2B

OASIS PETROLEUM NORTH AMERICA LLC · McKenzie County, ND · File #41275 · Generated 2026-02-13 12:33

API: 33-053-10405
Target Formation: Middle Bakken
Permit Explained: Partially

📋 Permit Cycle Assessment

The well file contains contemporaneous documentation supporting permit approval dated 10/31/2024 (open hole log waiver effective date per Form 215477). The waiver approval rests on justified exemption based on proximate offset well logging sufficiency and GR-CBL substitution. Cores and Samples directive (10/28/2024) establishes collection and submission requirements binding operation. MWD survey data (completed 03/28/2025) and well operations attestation (01/02/2025) confirm post-spud technical and operational compliance. However, the original APD (Application for Permit to Drill) approval documentation is not present in this file. The file demonstrates operational execution of permitted well geometry and regulatory conditions but does not directly contain the initial APD approval letter or permit decision document that would fully explain the permit grant. The documentation is time-bound to drilling operations (02/26/2025 spud through 03/28/2025 TD) and supports compliance verification rather than pre-approval justification.

🔍 Permit Cycle Signals (5)

Spud Date notification submitted

Supporting

📄 Sundry Form 4 - FORM ID 234065 - Notification of Work Performed
📅 02/26/2025 (Exact confidence)

Establishes actual spud date as operationally commenced per regulatory notification requirements

Open Hole Log Waiver approval

Direct

📄 Sundry Form 4 - FORM ID 215477 - Request for Consideration/Waiver
📅 10/31/2024 (Exact confidence)

Waiver grants exemption from open hole logging requirement under NDIC Rule 43-02-03-31 based on offset well GREEN 18 1 (NDIC 10387) sufficient logging within 1 mile; GR-CBL substituted from TD to ground level

Cores and Samples directive issued

Direct

📄 Letter from NDIC dated 10/28/2024 - Cores and Samples Requirements
📅 10/28/2024 (Exact confidence)

Establishes mandatory collection and submission protocols: samples at 30° intervals (vertical/build), 200° intervals (horizontal); submission to ND Geological Survey within 30 days; establishes regulatory oversight condition

MWD Survey certification and directional control data

Supporting

📄 MWD Survey Certification and Directional Survey Report - Total Directional Services LLC
📅 03/28/2025 (Exact confidence)

Completed survey data (0 to 21,690 feet MD) documents well geometry, inclination, azimuth, and TVD achieved (10,861.18' TVD); confirms horizontal placement within Middle Bakken target with 10-foot window design intent

Well Operations Completion Attestation and Conditions Checklist

Direct

📄 Well Operations Completion Statement signed by Dustin Anderson, Senior Permitting Specialist, Oasis Petroleum - Approved 01/02/2025
📅 01/02/2025 (Exact confidence)

Operator attestation confirms compliance with multiple regulatory conditions including well isolation, cement plugging standards, freshwater pool storage mandate, filter sock containment (leakproof covered container), casing shoe integrity, and operational protocols; establishes baseline permit conditions acknowledgment

📖 Historical Context (3)

Lost circulation incident and remediation at Mission Canyon formation
📄 Wellsite Geological Report - Core Geologic LLC - Geological Summary section · 📅 03/01/2025
Documents major drilling hazard encountered at 10,077' MD requiring 5-day remediation with unsqueezed cement plug and multiple fluid loss mitigation attempts. Establishes precedent for fluid loss management in this wellbore geometry and formation sequence; directly impacts completion design risk and post-drilling cement integrity assessment for current well and informs offset well drilling practices.

Kick-off point delays and curve landing adjustment
📄 Wellsite Geological Report - Geological Summary - Curve section · 📅 03/07/2025
KOP reached 03/07/2025 at 10,621' MD; final landing target revised downward from initial 10,859' TVD to 10,849' TVD (Lodgepole top), ultimately landing at 10,850.68' TVD approximately 20 feet into Middle Bakken. Adjustment decision deferred due to operational constraints. Establishes constraint on future well design targeting precision and informs geosteering envelope tolerances for offset laterals on pad.

Bakken formation dip measured at 89.97° (near-vertical)
📄 Wellsite Geological Report - Geological Summary - Horizontal Wellbore section · 📅 03/28/2025
Average measured formation dip of 89.97° across 21,690' MD lateral section is near-vertical, affecting both hydrocarbon migration patterns and completions placement optimization. Persists as constraint on fracture propagation prediction and infill drilling geometry for adjacent wells on pad (41276, 41277).

🔧 Operator Pattern

Oasis Petroleum demonstrates adaptive operational response to subsurface hazards with documented incident response capability (lost circulation management); submits required regulatory notifications within regulatory timeframes; coordinates multi-well pad drilling sequencing with mid-stream completion deferral.
Spud notification filed 03/03/2025 (received and effective 03/04/2025); completion of drilling ahead of two companion wells (41276, 41277) with stated intent to return for completions after intermediate segments drilled on those wells; engagement of specialized directional and geological services (Total Directional Services MWD, Core Geologic mud logging and geosteering); waiver request properly justified with offset well reference (GREEN 18 1).

Confidence: Medium
File contains robust post-spud operational documentation (surveys, geological logs, regulatory attestations) and pre-spud approval signal (waiver effective 10/31/2024; cores/samples directive 10/28/2024). However, the original APD approval letter or permit decision document is absent from submitted file. Spud date (02/26/2025) post-dates waiver approval, indicating permit was issued prior to spud but is not materialized in this file excerpt. Geological and engineering documentation is complete and professionally certified. Regulatory compliance checklists and attestations are signed. Assessment of permit-cycle explanation is constrained by absence of initial permit grant document, reducing confidence from High to Medium despite strong operational compliance documentation.