GB/T 24260-2020 in English

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Standard No:	GB/T 24260-2020
Document status:	VALID
Title in English:	Petroleum seismic geophone
Title in Chinese:	石油地震检波器
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-03-31
Implemented on:	2020-10-01
Superseding:	GB/T 24260-2009 Petroleum seismic geophone
ICS Classification:	75.180.10-Exploratory and extraction equipment
Chinese Classification:	E91-Petroleum exploration logging equipment and instrument
Professional Classification:	GB-National Standard
Related Keywords:	seismic geophone introduction analysis coil geophone 5-28v/bar water pressure resistance test insulation resistance requirement three-component geophone requirement field maintenance dual-detection geophone introduced
Related Topics:	earthquake iec on earthquakes iec+ earthquake Geophone seismometer Medium earthquake detection Petroleum Testing Instruments How to detect oil Earthquake Phase II CNPC shock wave seismic wave Seismic wave field seismic wave Seismic wave field Petroleum Hydrocarbon Detector GB/T24260-2009 PetroChina Testing PetroChina Testing GBT24260 GB/T 24260-2009 GB/T 24260-2020 Agricultural land petroleum hydrocarbons Detector industry petroleum hydrocarbon place seismic mercury

《GB/T 24260-2020石油地震检波器》由TC355（全国石油天然气标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

Analysis of the core content of the standard

Technical parameters	Requirements of the 2009 version	New content of the 2020 version
Moving coil detectorWorking inclination angle	Not specified	New technical indicators of ≤5°
Piezoelectric detectorSensitivity	Not separately specified	Clear parameter range of 5-28V/bar
Water pressure resistance test	Insulation resistance requirement only	Add 200m water depth pressure test

The standard stipulates that the natural frequency is divided into two series: 4Hz-7Hz and 8Hz-28Hz, among which:

New sensitivity unit conversion formula:

1V/bar = 10⁻¹¹V/μPa

Deep-sea applications must pass the following:

Selection phase: Select the natural frequency according to the exploration depth. For shallow exploration, 8Hz or above is recommended.
Acceptance test: Focus on verifying the distortion coefficient and vector fidelity (three-component geophone requirement <-24dB)
Field maintenance: Regularly check the insulation resistance of the geophone string. For underwater applications, the withstand voltage performance must be tested monthly.