🛢️ Stallion 33-28 XE 1H

Devon Energy Williston, LLC · McKenzie County, ND · File #41539 · Generated 2026-02-13 12:33

API: 33053105000000
Target Formation: Middle Bakken
Permit Explained: Yes

📋 Permit Cycle Assessment

The well file contains adequate contemporaneous documentation explaining the permit action. The Application for Permit for New Well - Horizontal (dated 1/27/2025, effective dirt work date 05/15/2025) is supported by five substantive pre-permit and permit-cycle waivers and approvals (03/18–03/21/2025) that directly condition the drilling program: (1) Filter Sock Container Waiver addressing mud type and waste handling; (2) Suspension of Drilling approval enabling phased rig strategy with specific field notification protocols; (3) Tubing/Packer Waiver tying completion design to casing pressure ratings and monitoring; (4) Open Hole Log Waiver conditioned on offset well correlation and compensatory GR-CBL logging; and (5) Bakken Setback Stipulation (per Commission Order 33659) establishing drilling corridor and casing design integration with wet shoe capability and frac-out requirements. The wellsite geologic report (dated August 28, 2023, logging commenced 08/20/2025) and directional survey/well path design (dated 1/7/2025) provide technical support for formation identification and trajectory execution. The spud date of 05/06/2025, SOD operational timeline, and well path geometry (KOP 10,565' MD, lateral to 21,520' MD in Middle Bakken) are consistent with the approved permit stipulations. No material gaps exist between permit issuance and operational justification.

🔍 Permit Cycle Signals (5)

Filter Sock Container Waiver approved - operator does not use filter media during drilling process and requests exemption from NDAC 43-02-03-19.2 container requirement

Direct

📄 Well Sundry Form File Number 41539, Form ID 236987; NDIC letter dated August 28, 2023 re: Filter Socks and Other Filter Media
📅 03/21/2025 (Exact confidence)

Non-routine waiver conditioning drilling operations; directly tied to operational practice (oil-based mud, no filter media use) that differentiates this well from standard horizontal approvals requiring filter containment

Suspension of Drilling (SOD) waiver approved for 90 days - permits use of smaller rig for surface casing with freshwater-based mud, then rig move-off within 3-5 days, allowing larger rig to move on for full vertical and lateral drilling within 90-day window

Direct

📄 Well Sundry Form File Number 41539, Form ID 236992
📅 03/19/2025 (Exact confidence)

Regulator-imposed operational constraint (reviewer comment: 'DEVON ENERGY WILLISTON, L.L.C must call immediately after spudding the well and when the plug is bumped...') conditioning permit and requiring field inspector notification at specific operational milestones

Tubing/Packer Waiver approved - completion design uses safety factor of 0.85 API burst rating on new 29# and 32# surface casing with API burst rating of 11,220 psi; production equipment installation to follow flowback; 300# gauge on surface casing during flowback

Direct

📄 Well Sundry Form File Number 41539, Form ID 237006
📅 03/18/2025 (Exact confidence)

Non-routine casing/completion variance tied to specific pressure design and monitoring protocol; allows deviation from standard tubing/packer requirement based on engineering assurances and equipment specifications

Open Hole Log Waiver approved - operator exempted from open hole log requirement under DMR Rule 43-02-03-31 based on offset well Stallion 33-28 3H (NDIC File #35843) within 1 mile with sufficient open logs to establish formation tops; GR-CBL from TD to ground level required

Direct

📄 Well Sundry Form File Number 41539, Form ID 236980
📅 03/18/2025 (Exact confidence)

Regulatory waiver conditioning logging operations based on offset well data sufficiency; integrated with geologic prognosis requiring GR-CBL as compensatory logging requirement

Bakken Setback and Pool Definition per NDIC Commission Order No. 33659 - wellbore isolation requirement down north-south axis within 500' drilling corridor, no closer than 150° setback from north/south boundaries in 2560-acre spacing unit; north setback based on production liner cemented in lateral with wet shoe and frac-out ability

Direct

📄 Application for Permit for New Well - Horizontal, Stipulations section; Well Path design document (Section Details showing KOP/lateral design)
📅 01/27/2025 (Inferred confidence)

Non-routine geometric constraint tied to specific casing design (production liner with wet shoe capability) and directional strategy that differentiates this multi-section lateral from standard setback applications; pool definition establishes stratigraphic boundaries

📖 Historical Context (4)

NDIC sample and core submission requirement per North Dakota Century Code Section 38-08-04 and NDAC 43-02-03-38.1 - samples from Base of Last Charles Salt at 30' intervals vertical/build, 200' intervals lateral; samples to State Geologist within 30 days of completion; cores within 180 days; civil penalty up to $12,500 per day for non-compliance
📄 Letter from Ross Edison, Geologist, dated 1/27/2025 · 📅 Unknown
Forward obligation persisting beyond permit approval through completion and post-well phases; establishes liability window and submission deadlines that condition closure and reporting requirements; non-compliance triggers separate regulatory enforcement action independent of drilling permit

Safety regulation compliance requirement (NDAC 43-02-03-28) regarding simultaneous operations - no boiler, electric generator, or treater placed nearer than 150' to any producing well or oil tank; 125' distance allowed with spark/flame arrestor
📄 Application for Permit for New Well - Horizontal, Conditions of Approval section · 📅 Unknown
Standing operational constraint affecting future pad development and surface equipment placement during completion and production phases; applies to all equipment on location regardless of phase; integrated with Ragged Butte Field operational protocols

Conductor casing setting restriction - conductor may only be set for permitted wells (implies offset well coordination and spacing unit management)
📄 Application for Permit for New Well - Horizontal, Conditions of Approval section · 📅 Unknown
Constraint affecting future well development on same pad; establishes that each well requiring surface casing must have separate permit approval, conditioning future drilling authorization and casing installation timing

Closed mud system with no cuttings pit requirement per Permit Review Policy
📄 Application for Permit for New Well - Horizontal, Stipulations section (Permit Review Policy) · 📅 Unknown
Ongoing environmental control requirement through all drilling phases; ties to Filter Sock Container Waiver and mudding program; must be maintained throughout drilling and completion unless formally modified

🔧 Operator Pattern

Devon Energy Williston (and prior Grayson Mill Operating) has established multi-well pad development strategy in Ragged Butte Field with standardized use of oil-based mud, suspension of drilling phasing, and wet-shoe liner completion design as operational standard; systematic approach to non-routine waivers reflects cost optimization and known geological/mechanical conditions
Well file shows: (1) Stallion 33-28 5H and 6H already developed on same pad location (NDIC Files referenced in survey); (2) Sanders 34-27 wells part of coordinated field program with similar directional geometry; (3) Filter Sock Container Waiver based on stated operational practice ('does not use filter media'); (4) Tubing/Packer Waiver approved with engineering language suggesting template application; (5) Acknowledgement letter (01/17/2025) notifies adjacent spacing unit operators of 5 proposed wells from same pad, indicating planned batch development under unified directional/completion strategy

Confidence: High
All key permit documents are present with exact approval dates. Permit anchor date (05/15/2025 dirt work authorization) is clearly stated in application header. Five substantive waivers and stipulations directly conditioning approval are dated 03/18–03/21/2025, establishing clear causal chain between pre-permit submissions and final approval. Geologic summary and wellsite report provide contemporaneous technical support for formation identification and well placement. Directional survey and well path design dated 01/07/2025 precedes spud date (05/06/2025) by sufficient interval. Operating procedures and sampling obligations are explicitly documented. No contradictions between permit terms and operational execution (spud date, well name, location, target formation, casing design all consistent across documents). OCR quality is high with only minor formatting artifacts; no material text extraction errors detected.