SY/T 7475-2020 in English

VALID

Code for quality acceptance of oil and gas construction engineering-Underground oil storage construction in rock caverns project

Issued on:2020-10-23
Implemented on:2021-02-01
File Format:PDF
Delivery:Via email within 10 business days

Price(USD)： $1,200.00
$1,164.00

Standard No:	SY/T 7475-2020
Document status:	VALID
Title in English:	Code for quality acceptance of oil and gas construction engineering-Underground oil storage construction in rock caverns project
Title in Chinese:	石油天然气建设工程施工质量验收规范地下水封石洞油库工程
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 10 business days
Issued on:	2020-10-23
Implemented on:	2021-02-01
Professional Classification:	SY-Oil & Gas
Related Topics:	Ministry of underground works sy/t 6238.1 Underground Engineering Test Site Water quality oil and gas CNPC gas storage CNPC Gas Depot PetroChina Engineer CNPC Groundwater Oily Smell Petroleum in water quality Petroleum Geological Analysis Oil Pipe Quality CNPC engineer Engineering construction quality acceptance Construction Quality Acceptance of Thermal Insulation Engineering in Petrochemical Industry Construction quality acceptance of underground waterproofing works Acceptance of construction quality of precipitation engineering Oil and gas construction engineering construction Construction acceptance of underground waterproofing works Construction Quality Acceptance of Oil and Gas Construction Projects Unification of Construction Quality Acceptance of Construction Projects Petroleum gas Design specifications for oil and gas engineering in collapsible loess areas" (sy/t 7677-2023) Petroleum Processing Quality Oil depot acceptance Construction quality acceptance of petrochemical furnace construction projects Acceptance of installed underground oil-water separation equipment Petroleum Engineering Rock Mechanics Communication engineering construction project acceptance Construction quality acceptance of oil and gas engineering projects Find petrochemical construction Petroleum Engineering Experiment Industry geological engineering fracturing Missile cave construction Groundwater petroleum hydrocarbon quality Military cave construction standards sy/t 7494-2020 sy/t 7466-2020 sy/t 7468-2020

Introduction

Analysis of the core content of the standard

Technical module	Key indicators	Acceptance requirements
Open trench excavation	Centerline deviation ≤±100mm	Inspection every 10m
Grouting project	Hole depth deviation -200~+500mm	20% sampling rate
Water curtain drilling	Inclination ≤2°	Inclinometer detection

Key Technical Requirements

Grouting Process Control

Chapter 5 of the standard stipulates that the grouting pressure needs to be dynamically managed, pre-grouting should be implemented before excavation, backfill grouting should be carried out after the concrete strength reaches 70% of the design value, and the contact grouting interval is ≥14 days.

Water Curtain System Verification

Chapter 6 requires that the water curtain holes must undergo single hole tests, effectiveness tests and comprehensive hydraulic tests, and the boreholes that invade the buffer zone 10m range must be blocked, and the water injection pressure data must be recorded daily.

Implementation suggestions

Establish a 3D geological model to guide the dynamic adjustment of grouting parameters
Use laser scanning technology to measure reservoir capacity, with section spacing ≤2m
Acoustic wave detection of rock mass must be completed before construction of sealing plug

Standard evolution analysis

Compared with GB 50996-2014, this specification adds:

Acceptance clause for elevation of pump pit retaining wall
Explicit provisions prohibiting shotcrete spraying after keyway excavation
Requirement that the error between two data of reservoir capacity measurement be ≤0.5%

More samples: DL/T 368-2010 JJG 21-2008 YD/T 3934-2021

Sample only — not a preview of SY/T 7475-2020

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