🛢️ Cyclone 5502 11-17 4B

Oasis Petroleum North America LLC · Williams County, North Dakota County, ND · File #41383 · Generated 2026-02-13 12:33

API: 3310506389
Target Formation: Middle Bakken
Permit Explained: Yes

📋 Permit Cycle Assessment

The well file contains robust contemporaneous documentation explaining and justifying the permit approval dated 2025-03-08. Key permit-cycle signals include: (1) an approved open-hole log waiver (effective 2024-12-03) that conditions logging requirements by substituting offset-well log data; (2) a non-standard wet-shoe completion design documented in technical planning materials (dated 2024-09-16) that influences setback geometry and fracturing capability; (3) anticollision clearance completed pre-spud (2024-09-16) with identified Level 3 warning on pad-mate well 3B managed through planning; (4) explicit setback stipulations (150 ft north/south, 500 ft east/west) tied to the wet-shoe design and fracturing intent; and (5) closed mud system requirement linked to actual mud program executed during drilling (oil-based vertical/curve, brine lateral). The permit approval is fully explained by these direct regulatory orders, technical waivers, and supporting engineering analyses. No material gaps exist between the permit and its justification in the file.

🔍 Permit Cycle Signals (5)

Open Hole Log Waiver approved under NDAC 43-02-03-31; offset well Vuki 5502 42-7H (within 1 mile) has sufficient open logs to establish formation tops; GR-CBL to be run from TD to ground level

Direct

📄 Form 4 Sundry Notice (Form ID 220212), Logs & Testing category
📅 2024-12-03 (Exact confidence)

Waiver explicitly conditions the permit by substituting formation-top confirmation method; demonstrates regulator acceptance of offset-well log data in lieu of standard open-hole logging

Wet Shoe configuration approved for production liner with cemented annulus; toe-section design specified (floated shoe at 27,731' MD) to allow economic wiper-plug perforating on wireline

Supporting

📄 Details of Standard WetShoe document; Cyclone 5502 11-17 4B; Anticollision Report and Planning Report confirm TD of 27,554' MD with 27,731' planned total
📅 2024-09-16 (Inferred confidence)

Non-standard completion design tied explicitly to permit approval; 400-foot uncemented annulus at toe is operational deviation from standard practice, documented in technical planning materials predating spud

Anticollision analysis completed and clearance confirmed for all offset wells, including minimum separation factor of 1.405 with Cyclone 5502 11-17 3B at MD 3,323.36 ft; Level 3 warning identified but resolution documented in planning report

Direct

📄 Anticollision Report dated 2024-09-16; Separator Factor Plot; Offset Design summary table
📅 2024-09-16 (Exact confidence)

Anticollision clearance is a regulatory prerequisite for multi-well pad operations. The Level 3 warning at shallow MD (3,323 ft) on the pad-mate well 3B indicates risk mitigation was evaluated and documented pre-approval

Setback stipulation per Commission Order No. 33459: 150-foot setback from north and south boundaries; 500-foot setback from east and west boundaries within 1920-acre spacing unit. North setback based on production liner with wet shoe and ability to frac out shoe

Direct

📄 Application for Permit for New Well – Horizontal (Permit dated 2025-03-08); NDIC Field Order Info and Bakken Setback Summary Statement
📅 2025-03-08 (Exact confidence)

Setback rationale explicitly tied to wet-shoe completion design and fracturing capability, linking permit geometry to operational completion strategy

Closed mud system with no cuttings pit required per Permit Review Policy; reflected in Well Summary mud types (oil-based vertical/curve; brine lateral) and operational procedures

Direct

📄 Application for Permit for New Well (Conditions of Approval); Well Summary (Mud Type documentation)
📅 2025-03-08 (Exact confidence)

Standard but non-routine condition tied to specific mud system design executed during drilling (5-Apr to 13-May 2025); reflects permit compliance requirement

📖 Historical Context (6)

Sidetrack executed at 19,720' MD after Lower Bakken Shale (LBS) encountered at 20,774' MD; original wellbore reached 20,740' MD in LBS before pullback for ST1 redrill to target zone
📄 Geological Summary (Well Summary and Sample Descriptions); Cyclone 5502 11-17 4B formation tops and drilling narrative · 📅 2025-05-11
Sidetrack at shallow lateral depth (below 11,745' MD landing) demonstrates pressure to recover target exposure after geosteering error; subsequent drilling to 27,554' TD achieved 100% exposure. This unplanned deviation consumed drilling days and risk but is historical—no forward operational constraint beyond completion planning around both original and sidetrack wellbores

Formation tops and geosteering targets adjusted in real time: initial landing target 10,550' TVD, adjusted upward to 10,543' TVD at Lodgepole top, then downward to 10,545' TVD at LP7 marker and 10,551' TVD at Upper Bakken. Final curve landing at 11,745' MD/10,551.47' TVD, approximately 19' into Middle Bakken
📄 Geological Summary (Curve section and Formation Tops table); Planning Report (formation tops and design targets); 'Vertical,' 'Curve,' and 'Horizontal Wellbore' sections · 📅 2025-05-07 to 2025-05-08
Real-time geosteering adjustments based on formation identification confirm the Middle Bakken target was achieved but within narrow tolerance (19 feet into zone). This informs completion design assumptions about lateral placement and fracture initiation point; relevant for staged fracturing and production modeling post-approval

Geologist team configuration: on-site (Francis Annis, Ian Shaw) from Charles formation at 9,810' MD (2025-05-06); remote coverage (Kristian Hemb, Tim Whitlow) for night shifts; geosteering software (Starsteer) with 15-foot target window within Middle Bakken (C-D facies mid-zone)
📄 Geological Summary; Well Summary (Wellsite Geologist and Operations Geologist personnel); Formation Overview (Starsteer software and C/D facies targeting notes) · 📅 2025-05-06
Staffing model and software-assisted steering were critical to resolving the LBS encounter and executing successful sidetrack. This establishes the operational team competency baseline and technical infrastructure for geosteering; forward-relevant for any future sidetrack or extended-reach operations on same pad

Surface Use Agreement (SUA) executed with landowner; Affidavit Affirming Signed SUA dated 2024-11-12 confirms landowner awareness of multi-well drilling from single pad (wells 2B, 3B, 4B); dwelling 800 feet from location verified unoccupied (no notice required)
📄 Affidavit Affirming Signed SUA; NDIC Landowner Notification letter (Chord Energy verification) · 📅 2024-11-12
SUA and landowner clearance are foundational to pad operations; unoccupied dwelling status removes ongoing notification burden. Relevant for future pad expansion or offset drilling from same location

Cores and samples directive issued 2024-12-09 by State Geologist Ross Edison: operator required to collect samples at 30-foot intervals (vertical/build), 200-foot intervals (horizontal) from Base of Last Charles Salt; submit to ND Geological Survey Core Library within 30 days of drilling completion; cores within 180 days (NDCC 38-08-04, NAC 43-02-03-38.1)
📄 Letter from State Geologist dated 2024-12-09 (Cores and Samples directive) · 📅 2024-12-09
Sample and core submission obligations persist beyond permit and are tied to drilling completion (2025-05-13). Operator must manage sample shipment logistics and archiving; non-compliance subject to civil penalty up to $12,500 per day. Forward operational constraint: samples already collected (documented in Geological Summary at 30' and 200' intervals); boxes must be forwarded within 30 days of 2025-05-13 (deadline ~2025-06-12)

Filter sock and waste container requirement per NDAC 43-02-03-19.2 and 2023 Commission guidance (letter dated 2023-08-28): leakproof, covered container required on-site from spud through completion and flow-back; placard required indicating filter-only storage
📄 Letter dated 2023-08-28 re: Filter Socks and Other Filter Media · 📅 2023-08-28
Generic waste management obligation applicable to all wells; affects completion phase operations (2025 onwards). Persists as regulatory requirement independent of this permit's approval

🔧 Operator Pattern

Oasis Petroleum (now Chord Energy subsidiary) operates as both single-unit and multi-well pad developer; demonstrates competency in complex horizontal drilling with real-time geosteering, multi-well anticollision management, and regulatory coordination (NDIC Order 31973 self-notification for off-unit wellbores). Surface land management coordinated through documented SUAs.
SUA Affidavit (James DeMorrett, Surface Land Manager) confirms multi-well drilling authorization. Anticollision report shows offset well portfolio (Maridoe 5502 11-17 2B/3B, Streamsong 5502 11-17 2B/3B, Odin-Jorgenson 5502 44-8H with sidetrack variants, and distant offset clearances). Well Summary documents operator as primary on all reference and offset wells in Cyclone 5502 11-17 pad; Order 31973/31848 self-notification letter (2024-11-12) shows operator self-identified as both drilling operator and affected-unit operator, eliminating third-party notification requirement.

Confidence: High
The well file contains complete and internally consistent permit documentation with clear approval date (2025-03-08), explicit regulatory conditions (setbacks, mud system, waiver approval), supporting technical submissions (anticollision, planning report, geological report), and contemporaneous pre-spud materials (SUA, open-hole waiver, cores directive, waste management guidance). All regulatory signaling documents are dated within 6 months of permit approval and directly reference the well by name, API, and file number. Geological and operational execution (2025-05-04 to 2025-05-13) is fully documented with daily timestamps and formation-top confirmations. No material discrepancies between permit stipulations and actual drilling record. Historical context is separated cleanly from permit-cycle signals and does not contradict or undermine the permit explanation.