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NB/T 11528-2024Technical regulations of wireless measurement while drilling and device maintenance in coal mine (English PDF)

矿用无线随钻测量及装置检修技术规程

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

May 24, 2024

Implementation date

November 24, 2024

Scope

NB/T 11528-2024 is the English-translated version of 矿用无线随钻测量及装置检修技术规程.

NB/T 11528-2024 contains Chinese energy industry regulations for wireless measurement while drilling in underground coal mines and for the upkeep of the measuring devices.

The devices use mud-pulse transmission, sending signals as pressure waves in the flushing fluid along the drill string bore from in-hole equipment (probe, pulse generator, non-magnetic and filter drill rods) to orifice equipment with an explosion-proof computer and pressure sensor.

The standard covers device composition and selection, working conditions, measurement preparation, measurement, troubleshooting, inspection and repair, and recovery, maintenance, storage and transportation.

It applies to mud-pulse measurement in underground directional drilling and to the use, operation, inspection, testing and maintenance of the devices. Issued on 24 May 2024, it has applied since 24 November 2024.

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Document preview — NB/T 11528-2024

National Standard of the People's Republic of China

ICS: 73.020
Classification: D 80

Issued by: National Energy Administration of the People's Republic of China

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Device composition and selection
5 Working conditions
6 Measurement Preparation
7 Measurement
8 Measurement troubleshooting and troubleshooting
9 Equipment inspection and maintenance
10 Device recovery, maintenance, storage and transportation

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

1 Scope

This document specifies the composition and selection of wireless measurement while drilling equipment, working conditions, measurement preparation, measurement, and measurement troubleshooting for underground coal mines. and handling, equipment inspection and repair, equipment recycling, maintenance, storage and transportation.

This document is applicable to the construction of mud pulse wireless drilling measurement in underground coal mine directional drilling, and mud pulse transmission type mine wireless drilling measurement The use, operation, inspection, testing and maintenance of measuring devices.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.

GB/T 3836.1 Explosive atmospheres Part 1: General requirements for equipment

GB/T 3836.2 Explosive atmospheres Part 2: Equipment protected by flameproof enclosure "d"

GB/T 3836.4 Explosive atmospheres Part 4: Equipment protected by intrinsic safety type "i"

GB/T 3836.9 Explosive atmospheres Part 9: Equipment protected by encapsulation type "m"

GB/T 3836.13 Explosive atmospheres Part 13: Repair, overhaul, restoration and modification of equipment

NB/T 10173-2019 Technical specification for directional drilling in underground coal mines

NB/T 10174-2019 Technical requirements for directional drilling while drilling measurement devices for mining

3 Terms and definitions

The terms and definitions defined in NB/T 10173-2019 and the following apply to this document.

3.1 Measurement while drilling

A technology that enables real-time measurement and transmission of bottom hole information during drilling.

3.2 Mud-pulse transmission

During the drilling process, the center hole of the drill string is used as the signal transmission channel and the pressure wave of the flushing fluid is used for signal transmission.

4 Device composition and selection

4.1 Device composition

The device consists of in-hole equipment and orifice equipment.

a) In-hole equipment. It consists of a probe tube, a pulse generator, a probe tube outer tube, a non-magnetic drill rod, a filter drill rod, etc. The probe tube is generally composed of a measuring unit.

It is composed of element, power supply unit, signal generating unit, etc.

b) Orifice equipment. It consists of explosion-proof computer, explosion-proof keyboard, explosion-proof data storage device, explosion-proof pressure sensor, etc.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

NB/T 11529-2024|GB/T 46212-2025|NB/T 11527-2024|NB/T 11639-2024|GB/T 24505-2009|NB/T 11635-2024

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