DB21/T 3898-2023
Specifications for geological logging operations of surface coalbed methane wells in goaf areas of coal mines (English Version)

Standard No.: DB21/T 3898-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: Liaoning Provincial Standard of the People's Republic of China
Latest: DB21/T 3898-2023

Scope: This document specifies the working methods and technical requirements for the construction design, operation preparation, pre-drilling acceptance, logging operation, completion geological work, health, safety and environmental management, and data handover acceptance of geological logging of coalbed methane wells on the ground in coal mine goaf areas. This document is applicable to coal (rock) core logging, cuttings logging, logging during drilling, gas logging, drilling circulating medium logging, and geological logging of coalbed methane wells on the ground in coal mine goaf areas during special operations in Liaoning Province.

DB21/T 3898-2023 Referenced Document

DZ/T 0250 Specifications for coalbed methane drilling engineering
DZ/T 0302 Coal Geological Exploration Legend Schema
NB/T 10005 Drilling design form for coal bed methane well
NB/T 10040 Coalbed methane logging data interpretation and acceptance specifications
NB/T 10257 Construction Design Format of Coalbed Methane Geological Logging
SY/T 6276 Petroleum and natural gas industries health, safety and environmental management systems
SY/T 6923 Coalbed methane logging safety technical specifications

2023 DB21/T 3898-2023 Specifications for geological logging operations of surface coalbed methane wells in goaf areas of coal mines