Well Barrier Diagrams

Well Barrier 01 Drilling 02 Running Casing 03 Primary Cementing 04 Wireline Logging 05 Completions 06 Well Testing 07 08 09 10 Production Suspension Workover Abandonment

Drilling

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secondary

Drilling

Drilling

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg
Expected Max. Formation Pressure: xxx ppg
xxx ppg Overbalance

Drilling

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg
Expected Max. Formation Pressure: xxx ppg
xxx ppg Overbalance
Secondary Barriers
S.No Barrier Description Verification
1. FOSV Function Tested: Y / N. Pressure Tested to xxx psi.
2. Drill String Float Function Tested: Y / N
3. 20” Casing String Pressure tested to xxx psi.
4. Cement Behind 20” Casing Pressure tested to xxx psi.
5. Wellhead Seals (20” Casing) Pressure tested to xxx psi.
6. Formation at 20” Casing Shoe FG at shoe – xxx ppg EMW.
7. Annular Preventer Pressure tested to xxx psi.
8. Pipe Rams Pressure tested to xxx psi.
9. Blind Shear Ram (BSR) Pressure tested to xxx psi.
10. Choke and Kill Lines Pressure tested to xxx psi.
secondary

Running Casing

Running Casing

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg
Expected Max. Formation Pressure
xxx ppg xxx ppg Overbalance

Running Casing

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg
Expected Max. Formation Pressure: xxx ppg
xxx ppg Overbalance
Secondary Barriers
S.No Barrier Description Verification
1. 13-3/8” Casing floats (Shoe & Collar) Confirm floats clear and holding while RIH.
2. 13-3/8” Casing Confirm that the correct specification of casing is RIH.
3. 20” Casing String Pressure tested to xxx psi.
4. Cement behind 20” Casing Pressure tested to xxx psi.
5. Wellhead seals Pressure tested to xxx psi.
6. Formation at 20” Casing shoe FG at shoe – xx ppg EMW.
7. Annular Preventer Pressure tested to xxx psi.
8. Pipe Rams Pressure tested to xxx psi.
9. Casing Shear Ram (CSR) Pressure tested to xxx psi.
10. Choke and Kill Lines Pressure tested to xxx psi.
secondary

Primary Cementing

Primary Cementing

Primary Barriers
S.No Barrier Description Verification
1. Cement Slurry Around the Casing xxx ppg Lead Slurry; xxx ppg Tail Slurry
xxx ppg EMW – FG at the Previous Casing Shoe
2. Drilling Mud, Spacer, etc in the Annulus xxx ppg Drilling Mud when Casing was RIH
Max. Expected Pore Pressure: xxx ppg

Primary Cementing

Primary Barriers
S.No Barrier Description Verification
1. Cement Slurry Around the Casing xxx ppg Lead Slurry; xxx ppg Tail Slurry
xxx ppg EMW – FG at the Previous Casing Shoe
2. Drilling Mud, Spacer, etc in the Annulus xxx ppg Drilling Mud when Casing was RIH
Max. Expected Pore Pressure: xxx ppg
Secondary Barriers
S.No Barrier Description Verification
1. Displacement Mud inside 13-3/8” Casing xxx ppg Drilling Mud used to Displace Slurry.
2. 13-3/8” Casing floats (Shoe & Collar) Confirm floats clear and holding while RIH.
3. 13-3/8” Casing Confirm that the correct specification of casing is RIH.
4. 20” Casing String Pressure tested to xxx psi.
5. Cement behind 20” Casing Pressure tested to xxx psi.
6. Wellhead seals Pressure tested to xxx psi.
7. Formation at 20” Casing shoe FG at shoe – xx ppg EMW.
8. Annular Preventer Pressure tested to xxx psi.
9. Pipe Rams Pressure tested to xxx psi.
10. Casing Shear Ram (CSR) Pressure tested to xxx psi.
11. Choke and Kill Lines Pressure tested to xxx psi.
secondary

Wireline Logging

Wireline Logging

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg Expected Max. Formation Pressure: xxx ppg xxx ppg Overbalance

Wireline Logging

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg
Expected Max. Formation Pressure: xxx ppg
xxx ppg Overbalance
Secondary Barriers
S.No Barrier Description Verification
1. 20” Casing String Pressure tested to xxx psi.
2. Cement Behind 20” Casing Pressure tested to xxx psi.
3. Wellhead Seals (20” Casing) Pressure tested to xxx psi.
4. Formation at 20” Casing Shoe FG at shoe – xxx ppg EMW.
5. Annular Preventer Pressure tested to xxx psi.
6. Pipe Rams Pressure tested to xxx psi.
7. Blind Shear Ram (BSR) Pressure tested to xxx psi.
8. Choke and Kill Lines Pressure tested to xxx psi.
secondary

Completions

Completions

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg
Expected Max. Formation Pressure at TD: xxx ppg
xxx ppg Overbalance

Completions

Primary Barriers
S.No Barrier Description Verification
1. Drilling Mud Drilling Mud Weight: xxx ppg Expected Max. Formation Pressure at TD: xxx ppg xxx ppg Overbalance
Secondary Barriers
S.No Barrier Description Verification
1. FOSV (Run on DP / Blank Pipe) Function Tested: Y / N. Pressure Tested to xxx psi.
2. 9-5/8” Casing String Pressure tested to xxx psi.
3. Cement Behind 9-5/8” Casing Pressure tested to xxx psi.
4. Wellhead Seals (9-5/8” Casing) Pressure tested to xxx psi.
5. Formation at 9-5/8” Casing Shoe FG at shoe – xxx ppg EMW.
6. Annular Preventer Pressure tested to xxx psi.
7. Pipe Rams Pressure tested to xxx psi.
8. Blind Shear Ram (BSR) Pressure tested to xxx psi.
9. Choke and Kill Lines Pressure tested to xxx psi.
secondary

Well Test

(Liner / Screen in Hole)

Well Test

(Liner / Screen in Hole)

Primary Barriers
S.No Barrier Description Verification
1. 7” Liner Pressure tested to xxx psi.
2. Cement Behind 7” Liner (Perforated) Pressure tested to xxx psi.
Cement Design for Hydrocarbon Zone Verified.
3. Liner Hangar Packer Weight Tested to xxx lbs.
4. Test String Packer Weight Tested to xxx lbs.
Pressure Tested to xxx psi.
5. Test Fluid Fluid Weight: xxx ppg
Expected Max. Formation Pressure at TD: xxx ppg
6. Testing String Pressure Tested to xxx psi.
7. Lubricator Valves Function Tested: Y / N
Pressure Tested to xxx psi.
8. Test Tree Wing Valves and Swab Valve Function Tested: Y / N
Pressure Tested to xxx psi.
Secondary Barriers
S.No Barrier Description Verification
1. 9-5/8” Casing String Pressure tested to xxx psi.
2. Cement Behind 9-5/8” Casing Pressure tested to xxx psi.
3. Wellhead Seals (9-5/8” Casing) Pressure tested to xxx psi.
4. Drilling BOP Function Tested: Y / N.
Annular Pressure Tested to xxx psi.
Pipe / Blind Rams Pressure tested to xxx psi.
Shear Ram Pressure Tested to xxx psi.
secondary

Production

Production

Primary Barriers
S.No Barrier Description Verification
1. Liner Hangar Packer Weight Tested to xxx lbs.
2. Production Tubing Packer Weight Tested to xxx lbs. Pressure Tested to xxx psi.
3. PBR Weight Tested to xxx lbs. Confirmed Tubing Latched to PBR.
4. Downhole Safety Valve (DHSV) Pressure Tested to xxx psi.
5. Production Tubing (To DHSV) Tubing Weight and Grade Confirmed prior RIH. Pressure Tested to xxx psi.

Production

Primary Barriers
S.No Barrier Description Verification
1. Liner Hangar Packer Weight Tested to xxx lbs.
2. Production Tubing Packer Weight Tested to xxx lbs. Pressure Tested to xxx psi.
3. PBR Weight Tested to xxx lbs. Confirmed Tubing Latched to PBR.
4. Downhole Safety Valve (DHSV) Pressure Tested to xxx psi.
5. Production Tubing (To DHSV) Tubing Weight and Grade Confirmed prior RIH. Pressure Tested to xxx psi.
Secondary Barriers
S.No Barrier Description Verification
1. 9-5/8” Casing String Pressure tested to xxx psi.
2. Cement Behind 9-5/8” Casing Pressure tested to xxx psi.
3. Wellhead Seals (9-5/8” Casing) Pressure tested to xxx psi.
4. Formation at 9-5/8” Casing Shoe FG at shoe – xxx ppg EMW.
5. Production Tubing Above DHSV Tubing Weight and Grade Confirmed prior RIH.
Pressure Tested to xxx psi.
6. Tubing Hangar and Seals Pressure tested to xxx psi.
7. Tubing Head Spool SOV Function Tested: Y / N.
Pressure tested to xxx psi.
8. X-Mas Tree (Upper Master Valve) Function Tested: Y / N.
Pressure tested to xxx psi.
9. X-Mas Tree (Body) Pressure tested to xxx psi.
secondary

Suspension

(Intermediate Section Drilled)

Suspension

(Intermediate Section Drilled)

Primary Barriers
S.No Barrier Description Verification
1. Suspension Cement Slurry Weight: xxx ppg
Hydrocarbon Zone: Y / N
Gas Block Capability: Y / N
Expected Max. Formation Pressure at TD: xxx ppg
xxx ppg Overbalance
2. Drillable Cement Retainer Weight Tested to xxx lbs.
Confirmed Retainer Set with no Movement

Suspension

(Intermediate Section Drilled)

Primary Barriers
S.No Barrier Description Verification
1. Suspension Cement (OH) Slurry Weight: xxx ppg Hydrocarbon Zone: Y / N Gas Block Capability: Y / N Expected Max. Formation Pressure at TD: xxx ppg xxx ppg Overbalance
2. Drillable Cement Retainer Weight Tested to xxx lbs. Confirmed Retainer Set with no Movement
Secondary Barriers
S.No Barrier Description Verification
1. 9-5/8” Casing String Pressure tested to xxx psi.
2. Cement Behind 9-5/8” Casing Pressure tested to xxx psi.
3. Wellhead Seals (9-5/8” Casing) Pressure tested to xxx psi.
4. Well Fluid (Drilling Mud) Mud Weight: xxx ppg Expected Max. Formation Pressure at TD: xxx ppg
5. Bridge Plug Weight Tested to xxx lbs. Pressure Tested to xxx psi.
6. Cement Plug Over Bridge Plug Pressure Tested to xxx psi.
7. Suspension Cap Pressure Tested to xxx psi.
secondary

Workover

Workover

Primary Barriers
S.No Barrier Description Verification
1. Liner Hangar Packer Weight Tested to xxx lbs.
2. Production Tubing Packer Weight Tested to xxx lbs.
Pressure Tested to xxx psi.
3. PBR Weight Tested to xxx lbs.
Confirmed Tubing Latched to PBR.
4. X-Mas Tree Wing Valves Function Tested: Y / N
Pressure Tested to xxx psi.
5. Production Tubing (To Hangar) Tubing Weight and Grade Confirmed prior RIH.
Pressure Tested to xxx psi.
6. Wireline BOP Body Pressure Tested to xxx psi.
7. Lubricator Pressure Tested to xxx psi.
8. Stuffing Box Integrity Checked and Confirmed: Y / N

Workover

Primary Barriers
S.No Barrier Description Verification
1. Liner Hangar Packer Weight Tested to xxx lbs.
2. Production Tubing Packer Weight Tested to xxx lbs.
Pressure Tested to xxx psi.
3. PBR Weight Tested to xxx lbs.
Confirmed Tubing Latched to PBR.
4. X-Mas Tree Wing Valves Function Tested: Y / N
Pressure Tested to xxx psi.
5. Production Tubing (To Hangar) Tubing Weight and Grade Confirmed prior RIH.
Pressure Tested to xxx psi.
6. Wireline BOP Body Pressure Tested to xxx psi.
7. Lubricator Pressure Tested to xxx psi.
8. Stuffing Box Integrity Checked and Confirmed: Y / N
Secondary Barriers
S.No Barrier Description Verification
1. 9-5/8” Casing String Pressure tested to xxx psi.
2. Cement Behind 9-5/8” Casing Pressure tested to xxx psi.
3. Wellhead Seals (9-5/8” Casing) Pressure tested to xxx psi.
4. Tubing Hangar and Seals Pressure tested to xxx psi.
5. Tubing Head Spool SOV Function Tested: Y / N.
Pressure tested to xxx psi.
6. Wireline Safety Head Function Tested: Y / N.
Pressure tested to xxx psi.
7. Wireline BOP Rams Function Tested: Y / N.
Pressure tested to xxx psi.
secondary

Abandonment

(Screens Left in Hole)

(Tubing Out of Hole)

Abandonment

(Screens Left in Hole)

(Tubing Out of Hole)

Primary Barriers
S.No Barrier Description Verification
1. Suspension Cement (OH) Slurry Weight: xxx ppg
Hydrocarbon Zone: Y / N
Gas Block Capability: Y / N
Expected Max. Formation Pressure at TD: xxx ppg
xxx ppg Overbalance
2. Drillable Cement Retainer Weight Tested to xxx lbs.
Confirmed Retainer Set with no Movement
Secondary Barriers
S.No Barrier Description Verification
1. 9-5/8” Casing String Pressure tested to xxx psi.
2. Cement Behind 9-5/8” Casing Pressure tested to xxx psi.
3. Wellhead Seals (9-5/8” Casing) Pressure tested to xxx psi.
4. Well Fluid (Drilling Mud) Mud Weight: xxx ppg
Expected Max. Formation Pressure at TD: xxx ppg
5. Bridge Plugs Weight Tested to xxx lbs.
Pressure Tested to xxx psi.
No. of Bridge Plugs decided based on Well Depth, Hydrocarbon-Bearing
Zones drilled through, Contingency requirements and Abandonment
plan.
6. Cement Plugs Over Bridge Plug Pressure Tested to xxx psi.
No. of Cement Plugs decided based on Well Depth,
Hydrocarbon-Bearing Zones drilled through, Contingency
requirements and Abandonment plan.
7. Suspension Cap Pressure Tested to xxx psi.

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