Environment Specifications

General Specifications

• All services must adhere to particular specifications detailed in Article 1.0 and the general specifications in Article 2.0
• Unless stated otherwise, the particular specification prevails in the event of conflict between particular and general specifications

Environment

• Services must account for these climatic conditions:
  • Maximum black-bulb temperature: 85°C
  • Maximum shade temperature: 56°C
  • Minimum shade temperature: 8°C
  • Maximum daily temperature variation: 25°C
  • Maximum relative humidity: 100%
  • Minimum relative humidity: 11%
  • Average barometric pressure: 97.6 to 98.7 kPa
  • Maximum 3-second gust wind-speed: 35 m/s
  • Soil thermal resistivity: 2.5°C m/W
  • Solar radiation: 0.12 W/mm²
  • Maximum ground temp @ 800 mm below grade: 35°C
  • Maximum ground temp @ 500 mm below grade: 40°C
• Contractor shall consider the high relative humidity, extreme weather such as sand and dust storms plus high intensity rainfall, and long journeys over graded roads.

Units of Measure

• Services are measured by the System International system:
  • Length: Metres (m)
  • Volume: Cubic Metres (m³)
  • Weight: Deca Newtons (daN)
  • Pressure: Kilo Pascals (kPa)
  • Mud gradient: Kilo Pascals/metre (kPa/m)
  • Power: Kilowatt (kW)
  • Temperature: Celsius (C)
• Measuring instruments, including gauges, meters and recorders, must be calibrated in S.I. units.
• Contractor's calibration program is subject to review and audit.

Wells Specifications

• Equipment must perform on wells with these specifications:
  • Depth: Up to 6,500 m
  • Rating: Up to 105,000 kPa
  • Temperature: Up to 175° С
  • H2S and CO2: H2S is up to 10 mol % and CO2 is up to 17.1 mol %

Pressure Ratings Specifications

• Company's policies/procedures are used to determine a safety factor for pressure ratings.
• Extra costs due to the contractor's higher safety factor are on the account of Contractor.

Quality Assurance and Control

• The contractor is responsible for quality assurance during all phases of the contract, following SP-1171.
• Quality Management System (QMS) must be certified by an accredited agency.
• Quality control plans must be prepared by the Contractor and sequentially listed.
• The company reserves the right to audit and witness inspections/tests with 30 days' notice.
• The company can request any tests and will have personnel to assist with audits and reviews.
• Contractor must correct noncompliance stages, deficiencies or omissions at any stage.

Company's Wellheads and Christmas Trees

• Contractor will provide connectors and crossovers (flanged) in SP-1213 standard:
  • Cameron's wellhead connectors of various sizes with working pressures - Part numbers for each size and connection are listed.
  • OTIS's Christmas tree cap assemblies.
  • Side outlets of various flange sizes and working pressures.
  • Flow line connectors of various sizes and ANSI ratings.

General Specifications and Procedures

• Contractor must adhere to listed documents on Effective Date or updates.
• Contractor ensures access to these documents and informs of any updates.
• Company issues instructions for updates to documents.
• Contractor makes documents available to personnel.
• Order of document priority is Tables 1, 2, 3, 4, and 5 unless stated otherwise.

Download Locations

• Advising Company if any links included are incorrect is important.
• Well Eng: https://livelink.pdo.co.om (domain: Extranet)
• Registration is required at https://srm.pdo.co.om.

Company Specifications, Procedures and Guidelines, and SIEP Standards

• Includes specifications, procedures and guidelines, and SIEP standards covering various aspects of operations, health, safety, environment, and quality.
• Also involves well engineering, management of change, lifting, hazardous areas, and more.

API Recommended Practices and Specifications

• Lists recommended practices and specifications for maintenance, inspection of drilling equipment, well control, safety, and other aspects.

Other Standards

• Mentions other standards like ANSI, ASME, ASTM, ISBN, HACH, and BS for specific aspects.

Drawings

• Drawings available at well Site for services performance:
  • Diagram of Unit layout.
  • Map of hazardous zones 1 and 2 with SP-2311 and API RP 505.
  • Noise map of Unit.
  • High and low pressure system showing tanks and mixing facilities.
  • Drops layout.

Equipment and Fluid Specifications

• Hydraulic Fracturing and Stimulation Equipment:
  • Requires HFU, 15,000 psi HP Scope and LP Scope, 2", 15,000 psi CTU, 2", 10,000 psi CTU, and/or 2-3/8", 15,000 psi CTU, and 2-3/8", 10,000 psi CTU..
  • Covers detailed specifications for fracturing pumps, tanks, sand feeders, liquid additive systems, hydration units, blenders, control rooms, relief valves, treating iron, tree savers, pump skids, transfer pumps, pressure testing pumps, annulus pumps, mixing equipment, control panels, mechanical zonal isolations, and laboratories.
  • Specifications for mobile cranes, forklifts, well Site offices and facilities,.
  • Also goes into detail for ambulances, buses, and more.

Sand Management Systems

• The Sand Management Systems must be 15,000 psi and 10,000 psi, and require mobile cranes and forklifts.

Flow Back Loop

• Flow Back Loop shall be provided including minimum specifications and requirments.
• Includes 4-1/16" SSV flange connection and enough crossovers for different sizes of Christmas trees plus SSVs and TR-SCSSSV control panel with ESD system.

HFU and CTU Mobile Camps

• Mobile and SMS camps are required.

Additional Equipment

• Covers specifications for N2 converters, tanks, sand feeders and additional equipment like rigs.

CCTV Specifications

• CCTV Milestone XProtect software covering areas for easy rigging-up and unit movements will be required.

Hydraulic Fracturing Fluid Specifications

• Fluid system additives and concentrations will be specifically set, for certain temperatures.
• Specifications include crosslinked fluid systems and linear gel fluids with the specific measurement and compounds that must be used for all.