Wasserburger_Federal_1_OW_P_A_17322_O_G_well_P_A_20210817_landowner_requirements_0001.docx

PART 1: GENERAL

1.1 SUMMARY

A. Description of Work: Work includes furnishing labor, equipment, supplies, and materials to plug and abandon the orphaned Wasserburger Federal 1 well, removal and disposal of specified materials and well fluids, and surface restoration of the well site to the prescribed conditions. The water disposal pits will not be reclaimed in this contract. If necessary, alternative methods will be selected on site by the Contracting Officer as the site conditions are determined.

B. Mobilization: The movement of personnel, equipment, supplies, and incidentals to the well or job site. The time required to rig up the drilling, completion/workover rig, or plugging, shall be included as part of mobilization Section 1505 Mobilization/Demobilization.

1.2 LOCATION:

A. Work under this Contract is located in Lot 3 of Section 1, T37N, R63W, Niobrara County, Wyoming. The work location is shown on the location maps.

1.3 DEFINITIONS:

A. Well Site Restoration: Includes work and equipment necessary to remove well equipment, structures, trash, and well fluids from the well site. Perform necessary grading, backfilling, and placing stored topsoil to match the prescribed conditions and contours.

B. Anticipated Bottom Hole Pressure: This pressure shall be determined from available information including but not limited to completion and production test, drill stem test, or mud weight gradient. Lacking better data, bottom hole pressure shall be determined with formation pressure gradient of 0.44 to 0.50 psi per foot of depth.

1.4 RELATED WORK:

A. Specification Sections:

1. General Information and Requirements Section 01009

1.5 SUBMITTALS:

1.6 HYDROGEN SULFIDE (H2S) CONTINGENCY PLAN:

A. Plugging and Abandonment Operations: When conducted in zones known to contain, or which could reasonably contain, concentrations of H2S of 100 ppm or more in the gas stream must be reviewed for compliance with Onshore Oil and Gas Order Number 6. Onshore Oil and Gas Order Number 2 refers to Onshore Oil and Gas Order Number 6 where specific hydrogen sulfide safety and monitoring equipment minimum standards are addressed.

PART 2: PLUGGING EQUIPMENT AND PRODUCTS

2.1 DRILLING MUD/MUD SPACERS:

A. Drilling Mud/Mud Spacers used for plugging operations shall be bentonite, water, and weighting agent must be maintained on location should a well control issue arise after or while drilling out obstructions in wellbore. A minimum of 300 barrels (bbl) of fresh water shall be maintained on-site. Adequate mud materials must be maintained on-site in order to achieve a minimum density of 9.0 pounds per gallon (ppg). The mud does not have to be premixed. Additives shall be environmentally safe, containing no heavy metals, and provided in sufficient quantities on the well site to contain wellbore pressure.

2.2 CEMENT:

A. Cement used for plugs shall be API Class G. Dry weight of cement and shall be 94 pounds per sack (sk). Dry bulk cement shall be delivered by truck. Cement shall conform to the following:

2.3 CEMENT ADDITIVES:

A. Calcium Chloride (CaCl2) may be used to reduce Wait-On-Cement (WOC) time for the cement plugs. The Contract Officer will determine, based on site conditions, when CaCl2 will be added to the cement. The amount of CaCl2 added to the cement slurry will be determined at the well site based on current conditions.

2.4 WATER:

A. Water used for mud spacers, drilling and cementing operations shall be potable water.

2.5 PLUGGING EQUIPMENT:

A. COMPLETION/WORKOVER RIG (WOR): The rig shall have the capacity to operate to a depth of at least 2500 feet. The rig shall be furnished with a crew and supervision. Provide the manufacturer’s name, size, and capacity for the rig and the following required accessory equipment:

1. Tubing tools for 2-7/8-inch tubing.

B. WELL CONTROL EQUIPMENT: The well control equipment shall consist of the Blowout Preventer (BOP), Related Equipment (BOPE), and Accumulator System. The blowout preventer and related equipment shall have a rated working pressure of 5,000 psi (5M). The blowout preventer shall consist of an annular, two single rams - one being a pipe ram and one being a blind ram preventer. The accumulator system shall be capable of closing the BOP and retain a minimum of 200 psi above pre-charge. The related equipment (BOPE) shall include:

1. Two full opening safety valves and subs to fit work string being used.

C. CIRCULATING EQUIPMENT: The circulating equipment shall consist of the mud pump, and mud tanks. The mud pump shall be capable of discharge volumes to 200 gallons per minute (gpm) and discharge pressures to 3000 psi.

D. CEMENTING EQUIPMENT: The cementing equipment shall be capable of either batch mixing or ‘on the fly’ mixing the cement slurry. Cementing equipment must be outfitted with a continuous reading densitometer, and appropriate density must be maintained throughout pumping operations. A mud/multi-purpose pump shall be provided that is capable of pumping the cement slurry to the plug depths as specified.

E. STORAGE TANKS - WELL FLUIDS: A sufficient number of storage tanks shall be furnished to contain all well fluids circulated from the well during the plugging operations. Each storage tank shall have a capacity of at least 400 bbl.

F. PLUG and ABANDONMENT MARKER: Shall be a ¼-inch steel plate with weep hole welded across the top of the casing. The following shall be inscribed on the plate:

1. BLM

2. Wasserburger Federal 1

3. WYW51056

4. Lot 3 Section 1, T37N, R63W

PART 3: EXECUTION

3.1 GENERAL:

A. Depths: Depths given are from ground level.

B. Well Work Log: A daily work log shall be maintained of the entire plugging operation and shall be available for inspection during course of the work. The log shall list depths of existing and new plugs and the number of sacks of cement used for each plug. Submit the work log, a copy of the cement company job log, copies of the cementing pump pressure and pump rate charts, and any casing or cement evaluation logs to the Contracting Officer within 30 days of completion of plugging activities. When applicable, submit third-party job log.

C. Plug Tag or Pressure Test: Curing time shall be long enough to achieve a satisfactory plug tag or pressure test, according to Onshore Oil and Gas Order No. 2, before beginning further plugging operations.

3.2 SITE PREPARATION:

A. General: The Contractor shall perform site preparation work at each well site necessary to set the rig. Surface disturbance shall be held to a minimum.

B. Access to Well Site: Site access roads in some areas may need to be improved for equipment travel. Prior to improving BLM roads, obtain written approval from the Contracting Officer.

C. Storage Tanks: A sufficient number of storage tanks shall be provided on the well site to contain well fluids. All fluids circulated from the well shall be contained and properly disposed of after removal from the well site. Oil or other contaminates shall not be discharged into the watershed.

3.3 PLUGGING PROCEDURE:

A. Well Name and Number: Wasserburger Federal 1

1. MIRU access road repair team

2. Repair access road so workover rig and pertinent equipment can safely access location

3. MIRU workover and 2 Ram BOPE

4. POOH rods and tubing

5. ALL WELLBORE FLUIDS WILL BE CAPTURED AT SURFACE IN A FRAC TANK

6. TIH bit and scraper to 4960’, tag CIBP to verify TD, ensure circulation is maintained throughout B&S run

7. POOH

8. PU CICR TIH to 4760’, set CICR

9. Establish injection through perfs

10. ALL CEMENT PLUGS WILL BE CLASS G CEMENT AND MIXED WITH FRESH WATER FOR A SLURRY WEIGHT OF 15.8 PPG

11. Pump 75sx below CICR, 15sx above CICR

12. Conduct MIT to 500psi for 10 minutes to identify possible CSG leaks. If CSG leaks found, reevaluate plug placement if possible, if not, anticipate adding additional plugs as required

13. PUH to 2200’

14. Pump 15sx balanced plug

15. POOH

16. MIRU CSG removal equipment

17. Shoot off 5.5” 15.5# CSG at 500’

18. POOH with 500’ 5.5” 15.5# CSG

19. TIH 550’

20. Pump 25sx stub plug

21. WOC 4 hour minimum

22. Tag plug

23. POOH

24. MIRU wireline

25. Shoot perfs at 350’ into 8.625” 32# CSG

26. POOH

27. RDMO Wireline

28. PU CICR TIH to 300’, set CICR

29. Establish injection through perfs

30. Pump 152sx below CICR, or until good clean cement is witnessed at surface

31. Pump 94sx above CICR, or until good clean cement is witnessed at surface

32. RDMO workover and BOPE

33. Cut off wellhead 3 feet below ground level. Ensure 5.5” has cement to surface, remediate w/ 1” pipe if necessary

34. Weld on ¼ inch thick metal plate with a weep hole cut in it. The following minimum information shall be permanently placed on the marker by beadingon with a welding torch or engraving: (1) BLM, (2) WYW51056, (3) Wasserburger Federal 1, and (4) Lot 3 Section 1, T37N, R63W

3.4 SITE RESTORATION:

A. Brush-hog if necessary, to reduce fire danger prior to performing work.

1. Remove all well production infrastructure from the well sites to no less than 3 feet below ground surface. This includes, but not limited to water and gas piping, netting/structure over the pits, and electrical conduits. It is not the intent to remove the entire horizontal infrastructure, regardless of actual depth. Per our records, the existing pipes and conduits are not active, but Contractor shall take appropriate steps to validate they are safe to cut and cap below grade.

2. All above ground utilities, e.g., air release valves, drip vents, stub outs shall be removed from the surface, cut and capped a minimum of three (3) feet below the finished ground surface.

3. Remove and dispose all trash and debris from the well site.

4. The white propane tank, located west of the storage tanks, is owned by the landowner, and will be retrieved after the access road is repaired.

5. Access road shall be left after repaired. No reclamation process’ need to be conducted on the road after it is repaired.

6. The berm located around the edge of the pad shall remain, but the berms around the tank battery and heater treater will be leveled and spread.

7. The water disposal pits shall remain in-place and will be reclaimed on a separate contract.

8. The pea gravel around the well head will remain for use on ranch.

9. The landowner will assume ownership of all rods and tubing pulled from the well.

10. The landowner will assume ownership of the storage tanks and the heater treater after all fluids have been cleaned out.

11. Petroleum contaminated soil shall be removed from the site and disposed of.

12. Vegetation shall be evenly spread over the location in a manner that results in a uniform and stable thickness.

13. After topsoil has been re-spread across the disturbed areas (after the Work is completed), the soil is to be prepared for seed bed and seeded with the seed mix listed below. Seed shall be from a weed free certified source. Drill seed at a depth not to exceed 0.5 inches. If broadcast seeding, double the rate of application.

Surface owner seed mix Dryland Pasture Mix

Species

% in Mix

Lbs PLS*

Brome Grass Smooth

24.46

Slender Wheatgrass

24.13

Intermediate Wheatgrass

24.11

Pubescent Wheatgrass

23.33

Totals 100%

12 lbs/acre

*PLS = pure live seed *Northern Plains adapted species *Double this rate if broadcast seeding

Seed Mix can be found at Farmers Coop located in Gillette:

Farmers Coop 207 East 1st St Gillette, WY 82716

PART 4: MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT:

A. Units: The work described in this section will not be measured for payment.

4.2 BASIS OF PAYMENT:

A. Payment: Prices and payment will be full compensation for the work described in this section. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

17322 (01) WELL PLUGGING AND ABANDONMENT EACH

END OF SECTION

Federal 1-8 orphaned well P&A 017322-1

Wasserburger Federal 1 orphaned well P&A 01009-2