SY/T 4085-2024 Specifications for design of oil-gas gathering and transportation for oilfield in beach-shallow sea English, Anglais, Englisch, Inglés, えいご
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ICS
E
Professional standard of the People's Republic of China
SY/T 4085-2024
Replaces SY/T 4085-2012
Specifications for design of oil-gas gathering and transportation for oilfield in beach-shallow sea
滩海油田油气集输设计规范
(English Translation)
Issue date: 2024-09-24 Implementation date: 2025-03-24
Issued by National Development and Reform Commission, P.R.C
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 General Provisions
5 General Layout and Utilities
5.1 Site Selection
5.2 Layout and Vertical Arrangement
5.3 Vertical Arrangement
5.4 Piping Integration
5.5 Power Supply
5.6 Water Supply, Drainage, and Fire Protection
5.7 Heat Supply
5.8 Cranes
5.9 Helideck
5.10 Communication
6 Oil and Gas Gathering, Transportation, and Storage
6.1 Wellhead Process Flow Design
6.2 Crude Oil and Natural Gas Metering
6.3 Oil and Gas Separation
6.4 Crude Oil Dehydration
6.5 Crude Oil Heating and Heat Exchange
6.6 Crude Oil Storage
6.7 Crude Oil Pumping
6.8 Natural Gas Compression
6.9 Oil and Gas Gathering and Transportation Pipelines
6.10 Safety Relief
7 Instrumentation and Control Systems
7.1 General Requirements
7.2 Instrument Selection and Location of Monitoring and Control Points
7.3 Computer Control Systems
8 Energy Conservation
8.1 General Requirements
Code for Design of Oil and Gas Gathering and Transportation in Offshore Oilfields
1 Scope
This document specifies the design requirements for oil and gas gathering and transportation facilities in offshore oilfields, including terms and definitions, general provisions, general layout and utilities, oil and gas gathering, transportation and storage, instrumentation and control systems, energy conservation, health, safety, and environment.
This document is applicable to the design of new construction, expansion, and renovation of oil and gas gathering and transportation facilities on steel fixed platforms, offshore land-based platforms/artificial islands in offshore oilfields.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute indispensable provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 1576 Water quality for industrial boilers
GB 5749 Standards for drinking water quality
GB 12348 Emission standard for industrial enterprises noise at boundary
GB 18613 Minimum allowable values of energy efficiency and energy efficiency grades for motors
GB 20052 Minimum allowable values of energy efficiency and energy efficiency grades for power transformers
GB/T 23803 Petroleum and natural gas industries — Design and installation of piping systems on offshore production platforms
GB/T 25359 Specification for explosion protection in petroleum and natural gas engineering construction
GB/T 50034 Standard for lighting design of buildings
GB 50052 Code for design of electric power supply systems
GB 50058 Code for design of electrical installations in explosive atmospheres
GB 50183 Code for fire protection design of petroleum and natural gas engineering
GB 50350 Code for design of oil-gas gathering and transportation systems in oilfield
GB/T 50892 Code for design of instrumentation control system for oil-gas field and pipeline engineering
GB 55015 General code for energy efficiency and renewable energy application in buildings
GBZ 1 Hygienic standard for the design of industrial enterprises
SH/T 3021 Design specification for instrument and pipe isolation and purging in petrochemical industry
SH/T 3126 Design specification for tracing and insulation of instrument and pipe in petrochemical industry
SY/T 0033 Code for design of electrical power supply and distribution systems for oil and gas fields
SY/T 0045 Code for design of crude oil dehydration
SY/T 0081 Code for design of crude oil heaters
SY/T 0108 Code for design of crude oil distillation
SY/T 0305 Technical code for drilling water treatment in offshore oil engineering
SY/T 0276 Petroleum and natural gas industries — Health, safety and environment management systems
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
steel fixed platform
A steel structure used for offshore oil and gas resource exploration and development.
Note: Generally composed of topsides, facilities and equipment, support structures, etc.
3.2
the platform at the beach or alongshore
An oil and gas production base constructed within the tidal flat elevation range below the local mean sea level, primarily using materials such as soil, sand, stone, concrete, and steel, and connected to the shore, for oil and gas exploration and development.
Note: Platforms include two types: steel fixed platforms and beach/shore-connected platforms.
3.3
artificial island
An island-type oil and gas production base constructed in tidal areas primarily using materials such as sand, stone, concrete, and steel, without a connection to the shore, for oil and gas exploration and development.
3.4
hazardous area
An area where a fire or explosion hazard exists due to the presence of flammable gases or vapors, flammable liquids, combustible dusts, or ignitable fibers or flyings.
3.5
non-hazardous area
An area not falling within the scope of a hazardous area (3.4).
3.6
wellhead area
The area surrounding one or more wellheads.
3.7
treating area without fire
An area where process equipment without open flames is located.
3.8
treating area with fire
An area where process equipment with open flames is located.
4 General Provisions
4.1 The design of oil and gas gathering and transportation engineering for offshore oilfields shall be carried out in accordance with the approved oilfield development plan, the design commission, or the contract, scope, and requirements specified in the design documents.
4.2 The process flow design for offshore oilfield oil and gas gathering and transportation engineering shall be determined based on the specific conditions of the offshore oilfield reservoir engineering, drilling engineering, oil and gas production engineering plans, the physical properties and chemical composition of the oil and gas, the product scheme, and export conditions. This determination shall also consider the environmental conditions of the tidal area and the distance of the oilfield from the shore, through technical and economic comparison, and shall comply with the following provisions:
a) The process flow should be closed (sealed).
b) Reasonably utilize the pressure energy of the oil and gas well fluids, appropriately increase the gathering and transmission system pressure, optimize the gathering radius, and reduce energy consumption in gathering and transmission.
c) The design of the oil and gas gathering and transportation process should adopt a production system that is partially offshore and partially onshore.
d) For the development and construction of offshore oilfields, high-efficiency and energy-saving treatment processes and equipment should be adopted to reduce offshore construction work and lower project investment.
4.3 The design capacity of the offshore oilfield oil and gas gathering and transportation system shall comply with the following provisions:
a) Single well equipment and flow lines shall be determined based on the daily production rates of oil, gas, and water per well provided in the oilfield development plan, as well as the amount of injected liquid or gas lift gas.
b) The design capacity of produced water treatment and transportation facilities should be determined as 1.2 times the daily production rate of the wells under the platform's
