Document np8Lx583rEnd3nB0jK9aB3gkR

Inspection Report Mechanical Integrity Test Osage DNR / Environmental Protection Agency 1201 Elm Street, Suite 500 Dallas TX 75270 Inspector Matthew Allen MIT Date 07/02/2024 Operator Representative Contango Resources, LLC Report Sent Operator Inject Interval 2742 - 2802 USDW 0 Time 08:00 Well Type Enhanced Recovery Annulus Fluid Type Casing 5.5 Concentric Pkr Tubing 2.375 Packer Depth Operator Info Contango Resources, LLC 1717 South Boulder, Suite 900 Tulsa, OK 74119 Phone: 918-392-3396 Inventory ID API Well No Lease Name Well ID OS3063000 BIG HEART 16 Location SE 34 27N 06E Type of MIT Injecting MIT Due Ada Pressure Test N Injection Rate (bpd) 03/18/2024 MIT Freq Test Reason Routine Tubular Lining EVERY FIVE YEARS Ann Filled (hrs) Ann Press Mont Time Pre-Test Initial Mid Final 09:00 09:15 09:30 Tubing Pressure 0 1020 1020 1020 Annulus Pressure Flowback Pressure High Mid Low End Total Volume Volume ADA Pressure Test - Required Test Pressure (Fluid Column Ht * Specific Gravity * .433 / N2 Wt Fac = Required Test Pressure) Depth to Top Perf/Open Hole Depth to Fluid Level Fluid Column Level Specific Gravity of Fluid Tubing 2742 290 2452 1.06 Annulus Nitrogen Weight Factor 1.0989 Required Pressure Test 1024 Remedial Action Type Fluid Migration Test Type Inspection Comments Inspector Signature Remedial Action Type Well OS3036000 was observed with 0psig on the tubing prior to the inspection. The well reached and maintained the required test pressure for 30 minutes. MATTHEW ALLEN Date: 2024.07.30 17:54:18 -05'00' Digitally signed by MATTHEW ALLEN Supervisor Signature JEANNE ECKHART Date: 2024.07.31 09:56:20 -05'00' Digitally signed by JEANNE ECKHART Contango Resources, LLC/Big Heart Lease OS3063000 (UIC) Inspection Date: 07/02/2024 Appendix 1 Photograph Log 2 Photos UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.768322, -96.642824 City: Shidler Photo No. 1 County/Parish: Osage State: Oklahoma Photo File Name: R0010473 Orientation: ESE Date of Photo: 7/29/2024 Time of Photo: 9:05 AM Latitude: 36.768322 Longitude: -96.642824 Photographer: Matthew Allen Description: This was the well sign for OS3063000. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY Photograph Log Location: 36.768322, -96.642824 City: Shidler Photo No. 2 County/Parish: Osage State: Oklahoma Photo File Name: R0010474 Orientation: W Date of Photo: 7/29/2024 Time of Photo: 9:05 AM Latitude: 36.769322 Longitude: -96.642824 Photographer: Matthew Allen Description: This was well OS3063000 connected and pressured during the mechanical integrity test.