GB/T 24261.2-2017 in English
VALIDMarine seismic digital streamer system--Part 2: Standards for specifying hydrophone streamer-cable characteristic
- Issued on:2017-09-07
- Implemented on:2018-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
《GB/T 24261.2-2017石油海上数字地震采集拖缆系统 第2部分：水听器拖缆技术条件》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
GB/T 24261.2—2017 Standard Interpretation
GB/T 24261.2—2017 "Petroleum Offshore Digital Seismic Acquisition Tow Cable System Part 2: Technical Conditions for Hydrophone Tow Cables" is an important standard in the field of marine seismic exploration, which regulates the manufacturing, inspection and quality evaluation of hydrophone tow cables. This article provides an in-depth interpretation from the aspects of standard framework, technical requirements, implementation suggestions, etc.
Standard Framework Comparison
| Standard Version | Main Contents | Main Changes |
|---|---|---|
| GB/T 24261.2—2010 | Technical Conditions for Hydrophone Tow Cables, covering basic requirements, physical characteristics, electrical characteristics, etc. | - Equipment output signal requirements for auxiliary equipment (see 3.3.2 of the 2010 version) - Filling material indicators are not detailed |
| GB/T 24261.2—2017 | New terms and definitions, solid cable hydrophone combination characteristics and technical indicators, and detailed filling material requirements. | - Added terms and definitions (see Chapter 3) - Added detailed technical indicators of solid cable and hydrophone combination |
Technical Requirements Analysis
1. Technical requirements for hydrophone combination
- Physical characteristics: including hydrophone type, quantity, channel length, channel spacing, etc.
- Electrical characteristics: output impedance, sensitivity, frequency response curve, etc.
- Solid cable characteristics: environmental protection, density consistency, service life, etc.
2. Technical requirements of the working section
- General technical parameters: length, outer diameter, sheath type, etc.
- Main technical parameters: number of seismic channels, A/D converter performance, dynamic range, etc.
3. Filler indicators
- Cable oil: density, flash point, aromatic compound content, etc.
- Colloid: acoustic properties, mechanical properties, viscosity, etc.
- Solid: physical and mechanical properties of polyethylene, thermal properties, etc.
Implementation Suggestions
1. Equipment Selection and Configuration
Select a suitable hydrophone tow cable system according to the exploration needs, focusing on the following aspects:
- Select the track spacing and combined length based on the geological conditions.
- Ensure that the tensile strength and environmental resistance of the cable meet the requirements of the operating area.
- Select redundant power lines and transmission lines to improve system reliability.
2. Inspection and Testing
Inspect and test in accordance with standard requirements:
- Noise test: Ensure that the RMS value of environmental noise is not higher than 320μV.
- Leakage resistance test: The leakage resistance is not less than 5 MΩ.
- Common Mode Rejection Ratio Test: CMMR is between 70 dB and 110 dB.
3. Maintenance and Care
Precautions for daily use:
- Regularly check the appearance of the cable to ensure that there is no damage or aging.
- Avoid operating in adverse weather conditions to reduce interference signals.
- Perform regular calibration and performance tests in accordance with standard requirements.
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 44560-2024 in English
Metallurgical bonding tubing for petroleum and natural gas industries
2024-09-29 -
GB/T 19831.2-2008 in English
Petroleum and natural gas industries - Equipment for well cementing - Part 2: Centralizer placement and stop-collar testing
2008-08-28 -
GB/T 26507-2019 in English
Petroleum drilling and production equipment—Ground oil-gas transportation pump
2019-12-31 -
GB/T 41066.1-2021 in English
Petroleum drilling and production equipment—Offshore semisubmersible drilling unit—Part 1：Functional configuration and design
2021-12-31 -
GB/T 17389-2026 in English
Manufacture, inspection and application of electric submersible pump cable
2026-02-27 -
GB/T 29021-2023 in English
Petroleum drilling and production equipment—Beam pumping unit
2023-11-27 -
GB/T 21411.1-2014 in English
Petroleum and natural gas industries―Progressing cavity pump systems for artificial lift―Part 1:Pumps
2014-12-22 -
GB/T 35147-2017 in English
Petroleum and natural gas industries―Flexible couplings for mechanical power transmission―General purpose applications
2017-12-29
