🛢️ GROVE FEDERAL 5892 31-33 3B

Oasis Petroleum North America, LLC (subsidiary of Chord Energy) · Mountrail County, ND · File #42646 · Generated 2026-02-13 12:33

API: 3306105639
Target Formation: Middle Bakken
Permit Explained: Yes

📋 Permit Cycle Assessment

The permit approval is substantively explained by five discrete regulatory and technical signals anchored to the permit issuance. Commission Order No. 34892 establishes the primary setback and spacing unit constraints that condition the drilling authority. The Cottonwood-Bakken Pool definition formalizes the productive interval. A waiver of standard facility setbacks (Order No. 31500) explains non-routine pad equipment positioning. A waiver of adjacent operator notification (Order No. 31848) addresses potential cross-spacing-unit liability by confirming same-operator control. Finally, anticollision analysis with documented 1.2 safety factor justifies approval despite Level 3 warnings against one offset well. Collectively, these signals establish that the permit approval is conditioned on specific geometric, pool definition, facility design, and operational risk controls evaluated at the time of issuance.

🔍 Permit Cycle Signals (5)

Commission Order No. 34892 approval granting well drilling permit conditioned on setback compliance: 500' north/south boundaries, 150' east/west boundaries within 2560-acre spacing unit (Sections 33, 34, 35, 36, T158N, R92W)

Direct

📄 Permit Information / Stipulations page, NDIC Field Order Info section
📅 Unknown (Missing confidence)

Direct regulatory condition establishing the geometric and boundary constraints that bound this permit approval. Setback exemption specifically referenced for production liner cemented in lateral with wet shoe.

Cottonwood-Bakken Pool definition established: interval 50 feet above Bakken top to above Birdbear Formation top; integrated into permit conditions

Direct

📄 Permit Information / Stipulations, NDIC Field Order Info
📅 Unknown (Missing confidence)

Formal pool definition required for horizontal well targeting; defines productive interval and regulatory jurisdiction.

Facility design exemption (Case No. 28949, Order No. 31500): indirect heater setback waiver permitting 60-foot offset from wellhead and 21-foot offset from oil tank (non-standard geometry constraint waived)

Direct

📄 Facility Statement section of technical submission
📅 Unknown (Missing confidence)

Non-routine waiver of standard setback requirements directly conditioning equipment placement and operational geometry on this pad.

Notification waiver requested and granted: applicant (Oasis Petroleum) is operator of adjacent spacing unit; waives Order No. 31848 adjacent operator notification requirement for wellbore crossing into adjacent unit

Direct

📄 December 17, 2025 letter from Ryan Emery, Chord Energy / Enerplus, to DMR Oil and Gas Division
📅 2025-12-17 (Exact confidence)

Addresses Order No. 31848 compliance by establishing waiver rationale (same operator control); directly conditions permit approval on internal operator consistency.

Anticollision assessment completed with separation factor analysis against 20 offset wells; minimum separation factor 0.426 against GROVE 11-36H triggers Level 3 warning but well plan approved with documented industry-standard 1.2 safety factor maintained during intermediate drilling

Supporting

📄 Anticollision Report, December 8, 2025; Anti-Collision Statement in technical submission
📅 2025-12-08 (Exact confidence)

Technical justification for permit approval despite elevated collision risk with existing well; demonstrates regulatory review of non-routine geometric risk and approval rationale.

📖 Historical Context (5)

Wet shoe production liner completion design: standard cemented liner intentionally over-displaced by 7 barrels to create ~400 feet uncemented annulus at toe; enables economic pump-down perforating on wireline versus tubing or tractor perforating
📄 Details of Standard Wet Shoe Grove Federal 5892 31-33 3B technical specification · 📅 Unknown
Establishes well completion methodology that affects fracture initiation, flowback procedures, and operational execution risk. Wet shoe configuration impacts subsequent workovers and production management.

Diesel-based stimulation fluid prohibition: operator will not use CAS No. 68334-30-5 (Fuels, diesel), 68476-34-6 (Fuels, diesel No. 2), 68476-30-2 (Fuel oil No. 2), 68476-31-3 (Fuel oil No. 4), or 8008-20-6 (Kerosene) in hydraulic stimulation
📄 Diesel Based Stimulation Fluids/Compounds section, operator commitment · 📅 Unknown
Operational constraint binding all future fracture treatments; requires substitute fluid formulations and may affect design intensity and proppant transport characteristics.

Dry cuttings disposal mandate: operator must use one of six listed licensed facilities (Chimney Butte Environmental, Dishon Disposal Inc, IHD Solids Management, Ideal Oilfield Disposal, Petrocomp, Prairie Disposal LLC, Secure Energy Services, Tervita Corporation); selection based on closest available facility to well site
📄 Licensed Facilities for Solid Drill Cuttings Disposal section · 📅 Unknown
Operational constraint on waste management affecting drilling cost, timeline, and regulatory compliance; persists through entire drilling and completion phase.

Filter sock and filtration media leak-proof container requirement (effective June 1, 2014 per North Dakota regulation): on-site container must be leakproof, covered, and placarded; maintained from spud through cleanup and flowback whenever filtration operations conducted
📄 Filter Socks and Other Filter Media letter dated May 30, 2025 from Mark F. Bohrer, Assistant Director, NDIC Oil and Gas Division · 📅 Unknown
Ongoing waste management obligation throughout drilling, cleanup, and early production; non-compliance triggers waste disposal violations under 43-02-03-19.2.

Closed mud system requirement with no cuttings pit: stands as standard permit condition throughout drilling and completion operations
📄 Permit Information / Stipulations, Permit Review Policy section · 📅 Unknown
Operational constraint affecting drilling fluid management, equipment configuration, and environmental control; persists through entire well construction.

🔧 Operator Pattern

Operator (Oasis Petroleum / Chord Energy subsidiary) operates multiple wells on same pad (DUNLIN and GROVE laterals in same 2560/5120-acre spacing unit) and adjacent units; exercises self-operator notification waiver; utilizes standardized well design templates (wet shoe completion, anti-collision protocols with certified planners) and centralized compliance frameworks (diesel-fluid prohibition, facility exemptions by case order reference)
December 17, 2025 letter states 'Oasis Petroleum North America, LLC is the operator of the adjacent spacing unit'; anticollision report names DUNLIN and GROVE wells (multiple laterals: 2B, 3B, 4B, 5B, 6BX) on same PAD; facility statement references pre-existing Order No. 31500 exemption; anti-collision statement references 'AC guidance reporting from certified well planners' and real-time corrected surveys as standard practice

Confidence: High
Permit approval date is explicit (07/25/2026 on APD form, though file notation shows 2025 processing). Five distinct permit-cycle signals are identified with clear documentary linkage to regulatory orders or technical submissions dated within the permit review window. Anticollision report (12/8/2025), planning report (12/8/2025), facility statement, and anti-collision statement provide contemporaneous technical justification. Order No. 34892 (setback/pool definition) and Order No. 31500 (facility waiver) are explicitly referenced in the permit stipulations. Order No. 31848 waiver request is documented in dated correspondence. Wet shoe design, diesel prohibition, cuttings disposal, and filter container requirements are clearly separated as historical/operational constraints with forward impact beyond the permit cycle. No material contradictions between regulatory conditions and technical submissions.