GB/T 33685-2023 in English

VALID

Technical specifications for seismic exploration data processing

Issued on:2023-05-23
Implemented on:2023-09-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $280.00
$272.00

Standard No:	GB/T 33685-2023
Document status:	VALID
Title in English:	Technical specifications for seismic exploration data processing
Title in Chinese:	地震勘探数据处理技术规程
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2023-05-23
Implemented on:	2023-09-01
Superseding:	GB/T 33685-2017 Technical specifications for land seismic exploration data processing
ICS Classification:	75.180.10-Exploratory and extraction equipment
Chinese Classification:	E11-Petroleum geology exploration
Professional Classification:	GB-National Standard
Related Keywords:	seismic exploration data processing seismic exploration data processing introduction seismic data processing multi-wave seismic data processing marine seismic data processing
Related Topics:	data processing exploration Lao data processing Luminous data processing data processing How to deal with this kind of data xps data everywhere data processing tools data processing c Principles of data processing Chromatography machine data processing Chromatographic peak data processing Test technology and data processing Test technology data processing Chromatographic data processing Process data at a granular level data processing tools How to process eis data How does eis process data Lao data processing Data processor Particle size analyzer data processing GBT33685 GB/T 33685-2017 masslynx data processing tutorial agilent chemstation data processing xps data processing BET data processing Micro-motion exploration technical regulations, Standard technical procedures for processing seismic exploration data Frequency domain seismic wave method exploration Seismic Exploration Electronic Detonator Localized data compliance management Photovoltaic exploration Seismic Exploration International Slot wave seismic exploration

《GB/T 33685-2023地震勘探数据处理技术规程》由TC355（全国石油天然气标准化技术委员会）归口，TC355SC2（全国石油天然气标准化技术委员会地球物理勘探分会）执行，主管部门为国家标准委。

Introduction

1. Overview and revision background

GB/T 33685—2023 "Technical Specification for Seismic Exploration Data Processing" is the latest national standard for seismic exploration data processing, replacing the old standard GB/T33685—2017. This standard mainly revise and supplement the technical requirements for processing design, multi-wave seismic data processing, absorption attenuation compensation, multiple wave attenuation, etc.

2. Comparison of standard frameworks

Chapter	Old version requirements	New version requirements
Processing design	Basic process, no detailed parameter requirements	Add test parameter optimization and report approval process
Multi-wave seismic data processing	Multi-wave type and technical requirements are not specified	Add converted wave and shear wave processing technical specifications
Absorption attenuation compensation	Only mention surface absorption attenuation	Add deep Q migration method and effect verification
Prestack processing technology	Anisotropy correction is not specified in detail	New requirements for TTI pre-stack depth migration

3. Detailed explanation of key technical requirements

3.1 Datum static correction (7.4)

Datum static correction is a basic step in seismic data processing. The new version of the standard adds requirements for tidal correction and water velocity correction. Especially for marine seismic data, it is required to use a dual datum processing method and analyze the trend of static correction.

3.2 Absorption attenuation compensation (7.8)

Formation absorption attenuation is an important factor affecting seismic data quality. The new version of the standard requires the establishment of a compensation model based on the surface and deep Q fields, and recommends the use of two methods, inverse Q filtering and Q migration, to ensure high-frequency end extension and wavelet consistency.

3.3 Multiple wave attenuation (7.9)

For free surface multiple waves and interlayer multiple waves, the new standard recommends the use of seismic data-driven adaptive subtraction and predictive subtraction methods. After processing, the effect needs to be verified through synthetic records and VSP corridor calibration.

4. Implementation recommendations

Case study: marine seismic data processing

In actual applications, it is recommended to use OBN node equipment to collect data in priority, and combine it with tide and water velocity correction processes. For complex formations, it is recommended to use the Q offset method for absorption attenuation compensation, and verify the processing effect through AVO analysis.

More samples: GB 50021-2001(2009) YD/T 3934-2021 QC/T 942-2021

Sample only — not a preview of GB/T 33685-2023