Pre-Job HSE Requirement (SOP)

PRE-JOB HEALTH SAFETY ENVIRONMENT REQUIREMENTS (SOP)

Description

Importance of Pre-Job HSE in well intervention and production operations Pre-job HSE (Health, Safety and Environment) requirements are essential for the safe execution of well intervention and production operations. SOPs offer a systematic method for ensuring safety in handling high-pressure equipment. This document describes specific HSE measures, required equipment and standard operational procedures to be implemented prior to commencing operation.

Nomenclature

✔MLMV = Manual Lower Master (valve

✔Tubing Kill Valve = TKV

✔Hydraulic Master Valve = HMV

✔They're profiled as Inner Hydraulic Wing Valve (IHWV).

✔OHWV = Outer Hydraulic Wing Valve

✔Crown Valve = CV

✔Blow Down = B/D

Pre-Job HSE Compliance Process

Pressure Bleeding Operations

✔All pressure bleeds will be carried out utilizing the temporary B/D line installed from the choke manifold to the pit.

✔The permanent blow-down line should not be used for sustained bleeding or flaring operations as it is not meant for that but for isolating and de-pressurizing lines.

✔The weak link here is the adjustable choke – the weakest link in this permanent blow-down system – which can rupture in seconds when solids (scale, sand, etc.) are being passed through it at pressure.

✔The temporary blow-down line has to be properly secured and tested before operations can start.

Pressure Testing Requirements

✔Unless specified otherwise, all pressure tests shall be retained for at least 10 minutes to confirm a tight seal.

✔So, pressure monitoring devices can make their way into the operation setup.

General HSE Procedures

✔Safety and Signage

✔Clearing site safety warning signage around site entrances and site perimeter.

Traffic Control

✔All vehicles and personnel will enter and exit through a single, controlled entrance located adjacent to the Well Site Office.

✔The place where vehicles cannot move should be defined more restrictive.

Equipment Integrity Checks

✔Before installation, a new ring gasket must be fitted to the adapter flange.

Typical gasket requirements by sizes:

✔3-1/16”, 10M psi = BX 154

✔4-1/16”, 10M psi = BX 155

✔5-1/8”, 10M psi = BX 169

Note Your Average Equipment Installation Guidelines

✔Tubing Kill Valve (TKV) Installations

✔Crossover, from TKV 5-1/8” flange to 2”, 1502 WECO thread

✔Be sure to torque and pressure test all crossovers.

✔The OHWV can be installed at any location on outer hydraulic wing valves.

✔Specifications for crossover install from OHWV to service company ESD:

✔5-1/8”, 10M, BX-169 to 3-1/16”, 10M, BX-154.

✔In advance of flow control activities, ensure valves are functioning properly.

Tree Flow-Side Installations

✔Hook up flow line from TCA to 2-3/8” bleed-off line

✔Install two Lo-Torque valves and a pressure monitoring point upstream of the tie-in to the B/D line that can be opened to allow controlled bleeding of the TCA.

✔No threaded connections; use only forged chickson piping and Lo-Torque or Hammer valves.

✔All pipes need to be qualified for sour service.

✔Tree Backside (TKV) Installations

✔Service company responsible for dedicating one pump line to the wellhead.

✔Set pop-off relief valve for 10,500 psi; bleed o/p to temp B/D line

✔Connect TCA to a separate pressure line for pumping operations

✔Install 2 pop-off valves on the TCA line, 6300-6500 psi, with bleeds plumbed into the B/D line.

✔Down the line of each pop-off system(s), keep isolation valves in place for bleeding procedures according to your discretion.

Blow-Down System Integration

✔It is necessary to install a manifold dedicated and controlled access to the B/D line.

✔The system should allow safe bleeding of the TCA or TKV lines and access from the Pop-Off relief valves.

FIRST: Gas Plant Connection Protocols

✔Check with Gas Manifold Operations 1-2 days before the job to confirm work schedules.

✔Prior to starting the work, at least 24 hours, ensure cathodic protection is turned off.

✔Verify gas flow parameters and that emergency shutdown procedures are in place.

✔Strategies to mitigate risk HSE

Mandatory PPE includes:

✔Fire Retardant Coveralls (H2S rated)

✔Scott full-face respirators (SCBA for high exposure H2S areas)

✔Chemical and impact-resistant gloves

✔Side shield provided safety goggles

✔Steel-toed boots

✔H2S gas detectors

✔Ready For The Moment It Happens – Emergency Response

✔Set emergency muster/pick-up locations at a safe distance from the wellhead.

✔Provide fire extinguishers, eyewash stations, and first aid kits on site.

✔H2S and blowout response training for all personnel Before personnel enter the site, all personnel must have had H2S and blowout response training.

✔H2S/CO2 Hazard Management

✔Install fixed and portable H2S detectors in the worksite area.

✔Place and maintain breathing equipment and emergency escape packs at vital points.

✔Before the job do drills on H2S so personnel can know evacuation procedures

✔Handling, and Storage — Good Environmental Protection Measures:

✔Employ spill containment systems within high-risk areas.

✔Have drip pans and absorbent materials readily accessible at pumping stations.

Conclusion

Best Practice: Develop/Implement Robust Pre-Job HSE Requirements (SOPs) Team members working in high-pressure environments can prevent leakage and ensure safety by adhering to these casual measures. Following these guidelines can help align the sector with industry best practices without sacrificing operational efficacy.