Oilfield Operations and Practices

Professional Oilfield Practices (POP)

• Purpose: to provide a reference to basic drilling fundamentals for Nabors rig personnel.
• Application: applies to all Nabors sites and all discipline levels of rig operations personnel.

Definitions and Acronyms

• BOP: Blow Out Preventer
• COM: Crown-O-Matic
• DO: Drilling Operations
• EQD: Enterprise Quality Documents
• FOM: Floor-O-Matic
• JSA: Job Safety Analysis
• LOTO: Lock Out and Tag Out
• MGS: Mud Gas Separator
• OEM: Original Equipment Manufacturer
• OS: Operational Safety
• POP: Professional Oilfield Practices
• PDIP: Performance Discipline Improvement Plan
• RSR: Rig Safety Review
• PTSM: Pre-Tour Safety Meeting
• PTW: Permit To Work
• RTLB: Rules To Live By
• Site Supervisor: the highest-ranking Nabors employee on-location with responsibility for the task
• SWA: Stop Work Authority
• TO: Tripping Operations
• WAC: We Always Check

Responsibilities

• Area Manager: ensure POP rules are fully implemented and communicated, and enforced during field management rig visits
• Operations Manager: provide resources and support, communicate POP rules, audit implementation, and enforce application of PDIP
• Drilling/Operations Superintendent: ensure POP rules are communicated and implemented, perform field assessments, and investigate violations
• Operations Engineer: create and distribute RSR, follow up on completion
• Site Supervisor: ensure POP rules are communicated, understood, and adopted, and enforce rules during PTSM and daily operations meetings
• Employees: learn and demonstrate competence of POP rules, apply SWA if rules are not followed

Professional Oilfield Practice Structure

• Layout: divided into OS, DO, and TO sections
• Color Scheme: based on ANSI Z535.5 Safety Alerting Standards, with blue for mandatory rules, red for prohibited activities, yellow for cautions, and green for safe/recommended activities

Guidelines

• POP shall be effectively communicated and recorded at the rig site during various meetings and training sessions
• A printed hardcopy of the latest revision of POP shall be available at the rig floor

Deviation/Exemption

• A Deviation/Exemption Request shall be submitted for approval if a site is unable to comply with any of the approved POP rules

Applicable Forms

• Various forms related to drilling operations, safety, and quality management

References

• Various documents and procedures related to drilling operations, safety, and quality management

Appendices

• Professional Oilfield Practices (POP) - Operational Safety (OS)
• Professional Oilfield Practices (POP) - Drilling Operations (DO)
• Professional Oilfield Practices (POP) - Tripping Operations (TO)

Operational Safety (OS)

• Rule 1: Keep yourself and others out of the line of fire

• Rule 2: Plan lifting operations and control the area to ensure safe mechanical lifting

• Rule 3: Follow safe driving rules

• Rule 4: Protect yourself against a fall when working at height

• Rule 5: Verify energy isolation before work begins

• Rule 6: Manage third-party workers and equipment

• Rule 7: Ensure walking/working surfaces are safe and secure

• Rule 8: Obtain authorization before entering a confined space

• Other rules and guidelines for operational safety### Equipment Operations and Safety

• Derrick Escape Device or Emergency Descent Device testing should only be performed with a test weight of 120 lbs (55 kg) per OEM, and never by a crew member.

• When not in use, the V-door safety gate should be kept closed to prevent accidents.

BOP Stack Operations

• When changing BOP stack rams, isolation valves should be closed to accumulator bottles, and LOTO should be applied to the accumulator electric pump.
• Use one of the accumulator air pumps to open/close bonnet doors to ensure slow and controlled movement.

Safety Signs and Communication

• When a BOP component is closed, a "ram closed" or "annular closed" sign should be placed on the weight indicator or joystick lock-out box to identify which component is closed.
• Pre-job safety meetings should be held to discuss risk assessments, procedures, and work instructions prior to commencing any job.

Equipment Maintenance and Inspection

• Driller/crew Supervisor should conduct a Pre-Job Safety Meeting (Toolbox Talk) and ensure it is properly documented.
• Task Leader should review the Risk Assessment with team members at the worksite and ensure adequate controls are in place for all hazards identified.

Personal Protective Equipment (PPE) and Safety

• While at a Nabors site, wear appropriate and approved PPE in designated areas.
• Avoid manual handling operations that involve the risk of injury.
• Wear impact gloves when handling tubulars.

Electrical Safety

• Do not use water hoses to wash down floors in the vicinity of electrical equipment, electrical switchgear, or generators.
• Do not remove safeguards on running machinery, even if they seem to make the job more difficult.

Lifting and Rigging Operations

• Only 4-part anchor bolt type shackles are allowed for use by Nabors employees on our rigs.
• Screw pin shackles are not to be used and should be removed from use when found.

Other Safety Rules

• Do not take shortcuts with company procedures or safety rules to save time.
• Do not throw objects around the rig floor, down the V-Door, or off the side of the rig floor.
• Stay clear of snatch blocks that are being used to handle heavy loads.
• Homemade tools, equipment, and uncertified lifting gear are strictly prohibited on the rig site.### Lifting and Hoisting
• When lifting or hoisting a load using mechanical means, personnel should move clear of the load once tension is placed on the hoist line.
• If load control is a concern, attach a tagline prior to placing tension on the hoist line.
• When lifting or hoisting a load near the well center using a floor winch/hoist, move the Top Drive as high as possible in the mast to reduce the possibility of the hoist line snagging on the Top Drive.

Wellbore Protection

• The wellbore shall be protected from loss or delay caused by improper procedures.
• Use the hole cover and/or barricades when the drill string is out of the wellbore, and secure loose tools in use near the wellbore.

Drill String Operations

• Keep the drill string moving up, down, or rotating when in open hole, unless otherwise instructed by the Directional Driller, Operator representative, or Rig Manager.
• Avoid exceeding maximum rotary torque by adjusting bit weight or rotary speed.

Drilling Operations

• The Driller shall ensure to always have adequate rig crew support on the rig floor to maintain seamless operations.
• Keep the hole full and be prepared with a contingency plan for when complete loss of returns is encountered.
• Discuss the plan with the Site Supervisor and Company Man before it happens.

Well Control

• The Driller is authorized to shut the well in if flow is indicated or suspected.
• Always keep the hole full and be prepared with a contingency plan for when complete loss of returns is encountered.

BOP Testing

• Pressure testing of BOP equipment shall be performed as per API Standard 53.
• Do not start with a high-pressure test and then reduce to the low-pressure test.

Valve Operations

• Verify the setting of all valves in the well control system according to the agreed management plan (approved Engineering drawing) for well control.
• Open and monitor a wellhead valve below the BOP test plug to provide immediate flow indication warning to the observer.

Safety Precautions

• Do not walk away from the brake handle or joystick controls without first securing the drawworks.
• Chain the brake down and set the parking brake.
• Keep hoses, ropes, harnesses, and tools away from the rotating Kelly bushings and/or top drive rotating drill string.

Mud Pump Operations

• Run mud pumps at Nabors approved speeds/pressures or as per contractual obligations.
• Replace the mud pump valve and seat as a matched set.
• Do not use a worn-out valve in a new seat or a new valve in a worn-out seat.