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🛢️ GRAND NATIONAL 34-36F 5H
DEVON ENERGY WILLISTON, L.L.C. (current); GRAYSON MILL OPERATING, LLC (original) · Williams County, ND · File #40958 · Generated 2026-02-13 12:33
- API
- 3310506287
- Target Formation
- Middle Bakken
- Permit Explained
- Partially
📋 Permit Cycle Assessment
The well file contains contemporaneous documentation of a **Form 15 operator transfer** (Grayson Mill → Devon Energy, approved 10/31/2025) and a **Form 4 sundry to remove confidential status** (effective 12/29/2025). These are event-based administrative actions, not technical permit approvals. The well itself was **originally permitted under a 2024 APD** (Permit Type: New Well - Horizontal; File 40958; Spud 08/31/2024; Completed 06/28/2025). The operator transfer and confidentiality removal are **post-completion actions that do not explain drilling or completion approval**—they document ownership/operational control changes after the well was already producing. **No drilling permit waiver or condition changes are evident in the 12/29/2025 contemporaneous period.** The permit approval cycle is explained in the original APD (dated prior to spud) and completion report (09/03/2025), not in the post-transfer administrative filings.
🔍 Permit Cycle Signals (3)
📄 Form 15 Notice of Transfer; Letter dated October 31, 2025
📅 10/31/2025 (Exact confidence)
Contemporaneous operator change. NDIC approval explicitly conditional on Bond No. CMS0358791 by RLI Insurance Company ($100,000). This is the direct regulatory action that anchors the permit cycle—the new operator cannot legally operate the well without this transfer approval and bonding.
📄 Sundry Form File 40958, Form ID 290117; Date Received 12/29/2025; Status Approved; Effective Date 12/29/2025
📅 12/29/2025 (Exact confidence)
Contemporaneous sundry action post-operator transfer. Marks transition of well from confidential to public record status, consistent with change in operator and asset transfer. No technical waiver or condition; administrative reclassification.
📄 Form 8 - Authorization to Purchase and Transport Oil from Lease (Well File No. 40958); Submitted 09/08/2025; Approved 09/08/2025
📅 02/01/2025 (Exact confidence)
Operationally critical allocation of sales and transportation responsibilities tied to operator change. Documents downstream marketing and logistics infrastructure supporting production. Dated AFTER initial operator transfer but reflects post-transfer commercial arrangements.
📖 Historical Context (6)
Tubing/Packer Waiver (Form ID 199640) approved 08/06/2024, citing: (1) new 9-5/8" surface casing with 11,220 psi API burst rating; (2) 0.85 API burst safety factor; (3) damage detection via monitoring equipment; (4) lower flowback pressures vs. completion operations; (5) low corrosion/erosion rates; (6) production equipment installed immediately post-flowback; (7) 300# surface casing gauge during flowback.
📄 Sundry Form File 40958, Form ID 199640; Date Received 07/30/2024; Status Approved; Effective Date 08/06/2024 · 📅 Unknown
**Waiver persists beyond this permit and constrains completion design execution.** Operator must comply with stated assurances: flowback pressure monitoring, immediate gauge installation, and rapid production equipment installation per waiver terms. Non-compliance or casing damage invalidates waiver and creates regulatory exposure. Affects ongoing well integrity management.
Filter Sock Container Waiver (Form ID 199636) approved 08/15/2024: exemption from NDAC 43-02-03-19.2 container requirement because operator does not use filter media during drilling.
📄 Sundry Form File 40958, Form ID 199636; Date Received 07/30/2024; Status Approved; Effective Date 08/15/2024; Phases: Filter Sock Container Waiver for drilling phase only · 📅 Unknown
**Waiver explicitly limited to drilling phase.** Operator obligation to maintain filter container requirements **resumes during completion, clean-out, and flowback phases.** Non-compliance during post-drilling phases creates environmental/regulatory violations.
Open Hole Log Waiver (Form ID 199629) approved 07/30/2024: waives requirement for open hole logs under DMR Rule 43-02-03-31. Offset well Hardscrabble 4-3427H (NDIC File #19964, within 1 mile) provides sufficient formation tops for correlation. GR-CBL log run from TD to ground level in lieu of full suite.
📄 Sundry Form File 40958, Form ID 199629; Date Received 07/30/2024; Status Approved; Effective Date 07/30/2024 · 📅 Unknown
**Waiver creates geological/compliance record dependency.** Operator must retain offset well log correlation and ensure GR-CBL quality for any regulatory review, re-completion, or dispute regarding formation identification and wellbore isolation. Waiver validity contingent on offsetwell data availability.
Drilling Sample Collection Waiver (Form ID 212760) approved 10/16/2024: waives requirement to collect 30' samples from Base of Last Salt to planned curve KOP. Justification: Grand National 34-36F 1H (File #40955, same pad) already collected samples in this interval. Samples resume in curve section (30' intervals) and lateral (200' intervals).
📄 Sundry Form File 40958, Form ID 212760; Date Received 10/15/2024; Status Approved; Effective Date 10/16/2024 · 📅 Unknown
**Waiver tied to intra-pad well offset data.** Operator must ensure that Grand National 34-36F 1H (offset well on same pad) samples are preserved, accessible, and available for regulatory audit. If offset well samples are lost or destroyed, waiver defensibility is compromised. Affects geological record for spacing unit.
Suspension of Drilling (Form ID 199639) approved 03/04/2025 (effective date; received 07/30/2024): 90-day suspension under NDAC 43-02-03-55 to allow two-stage drilling (small rig surface hole + plug/mechanical seal, then larger rotary rig for full well). Surface casing set with freshwater mud (no saltwater), no intentional deviation in surface hole, rig relocation expected within 90 days. Condition: Grayson Mill must call field inspector Jessica Gilkey (701-770-7340) when conventional rig moves back on well.
📄 Sundry Form File 40958, Form ID 199639; Date Received 07/30/2024; Status Approved; Effective Date 03/04/2025; SOD Days Requested: 90 · 📅 Unknown
**Operational obligation with compliance deadline.** Suspension expired 03/04/2025 unless extended. Well spudded 08/31/2024; completion dated 06/28/2025. Operator was required to notify field inspector of conventional rig deployment. If re-drilling occurs post-suspension expiration, operator must request extension or new SOD. Affects operational timeline and field inspector jurisdiction.
Setback and Pool Definition Stipulations (APD Conditions, Form Page 1): (1) Well bore not isolated by cement ≥500' setback from north/south boundaries, ≥150' setback from east/west boundaries within 1,920-acre spacing unit (Secs. 34, 35, 36, T153N, R103W); (2) East setback based on cemented production liner (wet shoe) and frac-out capability; (3) Sixmile-Bakken Pool defined as 50' above to 50' below top of Three Forks Formation; (4) Closed mud system, remote/automatic shutoffs required; (5) Condition: well must be drilled in conjunction with well meeting 1,220' setback from N/S boundaries to justify spacing unit.
📄 Application for Permit for New Well - Horizontal (APD); File 40958; Stipulations section (Page 1 of 10) · 📅 Unknown
**Structural constraints on current and future lateral placement and completion design.** Lateral trajectory and perforation placement must remain within setback envelope; violation triggers regulatory enforcement. Production liner design and frac shoe placement are dependent on setback compliance. Spacing unit justification is conditional—operator must maintain offset well drilling status. Non-compliance or abandonment of offset well creates remedial obligations.
🔧 Operator Pattern
**Grayson Mill Operating, LLC operated the well from permit through completion; Devon Energy Williston, LLC acquired operatorship post-completion (October 2025).** Grayson Mill demonstrated robust regulatory compliance through multi-waiver submissions (tubing/packer, filter sock, open hole logs, sample collection, suspension of drilling) and timely approvals (all pre-drilling and early execution phase). Well was spud 08/31/2024, completed 06/28/2025, and transitioned to new operator ~4 months post-completion. No non-routine operational issues documented in file.
Form 15 operator transfer dated 10/31/2025; All sundry waivers (Forms 199636, 199640, 199629, 212760, 199639) submitted by Grayson Mill and approved pre-spud or early drilling phase; Well Completion Report (09/03/2025) submitted by Yani Durden, Sr. Regulatory Compliance Professional, Grayson Mill; Form 8 (Purchaser/Transporter) submitted 09/08/2025 reflecting post-transfer arrangements; Directional survey and geological report completed professionally (Total Directional Services, Core Geologic LLC); No enforcement letters, violation notices, or remedial orders in file.
Confidence: Medium
**High confidence (95%) in operator transfer and confidentiality removal as contemporaneous to permit-cycle anchoring date (12/29/2025).** Both are documented by official NDIC approvals and clearly time-bound. **Medium confidence (60%) in assessment that these post-completion filings do NOT explain the original permit approval** because the file does not contain the original APD approval letter or drilling authorization order—only the APD application template and post-drilling/post-transfer administrative filings. The well was originally permitted and drilled under a 2024 APD (spud 08/31/2024; completed 06/28/2025) that predate the 12/29/2025 contemporaneous actions. **Historical non-routine signals are clearly identified and carry high confidence (90%+) because they are explicitly labeled as waivers, have approval dates, and cite specific regulatory citations and operational assurances.** Operator profile confidence is **Medium (65%)** because the file demonstrates administrative compliance but lacks detailed operational records, incident reports, or field inspection narratives that would fully characterize operator performance.