🛢️ Rystedt 5892 31-28 4B

Oasis Petroleum North America LLC · Mountrail County, ND · File #42634 · Generated 2026-02-13 12:33

API: 3306105637
Target Formation: Middle Bakken
Permit Explained: Yes

📋 Permit Cycle Assessment

The permit approval on 03/01/2026 (Dirt Work Date) is directly explained and conditioned by: (1) Commission Order No. 34938 establishing setback geometry tied to wet shoe liner design; (2) wet shoe technical justification in permit record enabling efficient perforating and justifying west setback waiver; (3) anticollision analysis completed 21 October 2025 demonstrating separation factor compliance (with Level 3 flags on two offset wells requiring active mitigation); and (4) operator self-holding of adjacent spacing unit and executed Surface Use Agreement, eliminating inter-operator notification requirement and permitting off-lease lateral entry. All permit stipulations are supported by contemporaneous technical and legal documentation. Core/sample collection mandate issued 01/12/2026 is post-permit operational condition, not explanatory of approval.

🔍 Permit Cycle Signals (5)

Commission Order No. 34938 approval conditioning horizontal drilling to 500' setback (north/south) and 150' setback (east/west) within 2560-acre spacing unit, with production liner cemented in lateral via wet shoe configuration

Direct

📄 APPLICATION FOR PERMIT FOR NEW WELL - HORIZONTAL OIL & GAS, STIPULATIONS section
📅 Relative to 03/01/2026 permit approval (Inferred confidence)

Establishes non-standard setback geometry tied to specific wellbore design (wet shoe with frac-out capability); these are direct regulatory conditions on the permit approval itself

Wet shoe configuration explicitly justified in permit record: cement job over-displaced by 7 barrels, creating ~400' uncemented annulus at toe-portion to enable pump-down perforating on wireline, avoiding costlier perforating-on-tubing method

Supporting

📄 Full Well Details and Standard Wet Shoe configuration documents
📅 Unknown (Missing confidence)

Permit stipulation directly references wet shoe capability as basis for west setback waiver; technical justification is integral to approval conditions

Anticollision analysis completed per ISCWSA methodology; all identified offset wells maintain separation factors ≥1.2 (industry standard safety factor); two critical conflicts flagged: EXIST HZ MAHAILA 5892 21-30H (SF 1.427–1.650) and EXIST HZ OVERAL 5892 11-30T (SF 0.322–0.392 marked Level 3) require active mitigation during lateral drilling

Supporting

📄 Anticollision Report, dated 21 October 2025; Summary and Separation Factor Plot sections
📅 2025-10-21 (Exact confidence)

Anticollision report documents critical risk thresholds that condition safe execution and survey frequency adjustments; Level 3 warnings on OVERAL conflict justify heightened drilling surveillance

Operator-controlled adjacent spacing unit: Oasis Petroleum self-holds both subject well spacing unit and adjacent unit into which wellbore will traverse (Bakken entry outside target spacing); waiver on inter-operator notification requirement granted per Order No. 31848/31973

Direct

📄 Letter from Chord Energy (Oasis parent), 30 October 2025; Affidavit Affirming Surface Use Agreement, 5 November 2025
📅 2025-10-30 (Exact confidence)

Permits off-lease horizontal entry without third-party consent; Surface Use Agreement with landowner executed; directly removes regulatory notification obligation and conditions permit approval for this non-standard geometry

Core and sample collection requirement per ND Century Code §38-08-04 and NDAC §43-02-03-38.1: samples from Base of Last Charles Salt at 30' intervals (vertical/build), 200' intervals (horizontal); cores within 180 days of completion; non-compliance civil penalty up to $12,500/day

Supporting

📄 Letter from ND Geological Survey, dated 1/12/2026 (RE: CORES AND SAMPLES)
📅 2026-01-12 (Exact confidence)

Post-permit operational requirement; defines sample collection protocol that conditions drilling execution and completion workflows; forward-binding obligation

📖 Historical Context (4)

Enget Lake-Bakken Pool formally defined by permit stipulation as 50' above Bakken top to above Birdbear top; spacing unit comprises Sections 25, 26, 29, 30 (T158N R92-93W); this is field-specific pool definition tied to 2560-acre unit
📄 APPLICATION FOR PERMIT, STIPULATIONS section, 'NDIC Field Order Info' · 📅 Unknown
Pool definition is structural constraint on lateral landing zone, perforating design, and commingling rights; persists for life of field and all future well completions

Closed mud system with no cuttings pit required; remote/automatic shutoff devices mandatory on all equipment; perimeter berm surrounding entire location; conductor may be set on permitted wells only
📄 APPLICATION FOR PERMIT, Conditions of Approval and Permit Review Policy sections · 📅 Unknown
Environmental and operational controls that remain in effect during drilling, completion, and production; non-compliance triggers regulatory enforcement

Diesel-based compounds banned from hydraulic stimulation fluids (CAS Registry Nos. 68334-30-5, 68476-34-6, 68476-30-2, 68476-31-3, 8008-20-6); operator must use licensed dry cuttings disposal facilities (ten facilities listed by county)
📄 Supplemental operator documents re: DIESEL BASED STIMULATION FLUIDS and LICENSED FACILITIES FOR SOLID DRILL CUTTINGS DISPOSAL · 📅 Unknown
Completion fluids and waste handling restrictions constrain frac design and execution; licensed facility requirement affects logistics and cost for entire project life

Indirect heater (non-fired treater) setback exemption granted under Case No. 28949 Order No. 31500; equipment may be positioned within 60' of wellhead and 21' of oil tank (non-standard spacing). Diked containment with impermeable base required
📄 FACILITY STATEMENT in supplemental operator documents · 📅 Unknown
Equipment spacing waiver is equipment-specific and tied to facility design; persists for life of pad if indirect heater remains in service; affects pad reconfiguration constraints

🔧 Operator Pattern

Oasis Petroleum (Chord Energy subsidiary) demonstrates integrated pad development strategy with multiple laterals (Rystedt 5892 31-28 2B, 3B, 4B; Craig 5892 31-28 2BX, 3B, 4B, and Craig Federal 5892 31-28 5B, 6B) drilled from single pad location. Self-holding of adjacent spacing units and intentional off-lease lateral geometry suggest deliberate exploitation of contiguous acreage and operational efficiency optimization.
Anticollision report references 14 offset wells on same pad; operator controls both subject and adjacent spacing units (per waiver letter). Well location plat (RYSTEDT 5892 31-28 4B and 3B) shows dense cluster development. Surface Use Agreement and landowner coordination indicate preplanned multi-well program.

Confidence: High
Permit file contains explicit regulatory approval order (No. 34938), dated technical justifications (anticollision 10/21/2025, planning 10/22/2025), contemporaneous legal documentation (waiver letter 10/30/2025, affidavit 11/05/2025), and post-permit operational requirements (cores/samples 01/12/2026). Well geometry, setback stipulations, and off-lease entry authority are clearly documented. Anticollision analysis demonstrates industry-standard risk assessment and is integrated into permit conditions. No material gaps in permit-cycle explanation; all key conditioning signals are traceable to specific documents with high date confidence.