DZ/T 0080-2010 English PDF (DZT0080-2010)

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DZ/T 0080-2010: Specifications for geophysical logging of coal
DZ/T 0080-2010
GEOLOGICAL MINERAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing DZ/T 0080-1993
Specifications for geophysical logging of coal
ISSUED ON: MARCH 06, 2010
IMPLEMENTED ON: MARCH 31, 2010
Issued by: Ministry of Land and Resources of the People’s Republic of
China
Table of Contents
Foreword ... 3 
Introduction ... 4 
1 Scope ... 5 
2 Normative references ... 5 
3 General ... 6 
4 Logging design ... 7 
5 Construction preparation ... 11 
6 Requirements for data collection ... 13 
7 Method technical requirements ... 19 
8 Data processing, interpretation ... 26 
9 Submission and acceptance of results ... 31 
10 Instruments and equipment ... 37 
11 Safety construction, health protection ... 42 
Appendix A (Normative) Logging notice ... 47 
Appendix B (Normative) Well-site basic data record book ... 49 
Appendix C (Normative) Raw data standard of geophysical logging of coal
(recommended standard) ... 54 
Appendix D (Normative) Logging result book ... 56 
Appendix E (Normative) Warehousing-incoming registration form of logging
record, processing disk (tape) ... 59 
Specifications for geophysical logging of coal
1 Scope
This specification specifies the basic requirements for the design,
instrumentation, measurement technology, raw material’s quality evaluation,
data processing and interpretation, report preparation, safety protection of
geophysical logging of coal.
This code is applicable to geophysical logging work related to coal, coalbed
methane, hydrology, engineering, environment, etc. (hereinafter referred to as:
geological exploration work of coal) in the geological exploration work of coal
resource evaluation, coal mine basic construction, coal mine safety production.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GBZ 142-2002 Radiological protection standard for sealed radioactive
sources used in oil and gas-field logging
GBZ 19871-2002 Basic standards for ionizing radiation protection and
radiation source safety
DZ/T 0069-1993 Schema/legend and color application standard of
geophysical survey map
DZ/T 0181-1997 Hydrogeological logging work specifications
DZ/T 0196-1997 General technical conditions for logging instrument
DZ/T 0215-2002 Specifications for coal, peat exploration
GWF 02 Regulations on management of radioisotope and radiation accident
b) Divide the lithology profile of the borehole, determine the physical property
data of the coal-seam, calculate the sand, mud and water content of the
rock-layer, infer and interpret the stratigraphic age;
c) Conduct physical and chemical comparison of coal and rock-layers;
establish stratigraphic geological cross-sections;
d) Determine the dip-angle and inclination of the formation, study the
variation law of coal and rock-layer, geological structure and sedimentary
environment;
e) Measure the ground temperature of the formation; analyze and evaluate
the characteristics of the ground temperature change;
f) Measure formation porosity, formation water saturation; determine water-
bearing-layer location and recharge relationship between water-bearing-
layers; measure water inflow and permeability coefficient;
g) Measure the mechanical parameters of the coal-seam;
h) Preliminarily estimate the gas content, porosity, permeability of the
coalbed methane in the target coal-seam; qualitatively evaluate the
permeability of the top and bottom rock-layers;
i) Determine the top angle and azimuth of the borehole;
j) Inspection evaluation of cementing quality and correction of casing depth;
k) Provide information or make preliminary assessments of other beneficial
minerals.
3.10 Processing and interpretation of data shall integrate various logging
methods and measured data of parameters. At the same time, it is necessary
to correctly and reasonably use geological, hydrological, engineering,
environmental and drilling, ground geophysical and laboratory data, to provide
accurate and reasonable geological results for coal geology exploration work.
3.11 The organization form, technical strength, equipment, transportation of
logging work shall be adapted to the construction characteristics of logging. At
the same time, it is encouraged to use new technologies, new methods and
new parameters, to continuously improve and develop logging technology and
continuously expand the field of geological applications.
4 Logging design
4.1 Basic requirements
sampling interval, sampling method, test and physical property test of coal and
rock core in other test holes shall be adapted to the purpose of the test. The
coal-seam’s number, thickness, structure, lithology, geological structure,
stratigraphic age, core inclination shall be correctly divided and described in
detail.
4.5.3 It shall prepare the test plan before the test. It shall prepare the test
summary in time after the test.
5 Construction preparation
5.1 Logging notice
5.1.1 After the drilling and exploration project is completed, the project team will
issue a “logging notice” to the logging project undertaker, which will be
confirmed through signature by the geological and logging person in charge
(see Appendix A for the contents of logging notice).
5.1.2 When the logging is noticed via telecommunication, after the logging
personnel arrives at the well site, they shall complete the formal formalities in
time.
5.1.3 Loggers shall arrive at the well site before the agreed time. If there is any
special situation that cannot be reached in time, it shall timely notice the
planned arrival time to the relevant department.
5.2 Logging preparation
5.2.1 It shall, based on the design requirements, the drilling exploration data of
the borehole to be tested, the logging data of adjacent hole, analyze the
geological conditions of the borehole.
5.2.2 Check the working status of the instrument on site and follow the
requirements of Table B.3 in Appendix B to fill in the inspection results. At the
same time, the data related to the adjustment and test must be recorded in
digital and monitored records, meanwhile the corresponding charts shall be
drawn and well kept.
5.2.3 Check other necessary equipment, tools, materials, materials, etc. The
radioactive source tank must be locked and stored to ensure safety.
5.2.4 Follow the requirements of Table B.1 in Appendix B to carry out the
determination of well fluid resistivity, well fluid temperature, well fluid density.
5.2.5 Carry out cable depth (marking) inspection and follow the requirements of
Table B.5 in Appendix B to fill in the inspection results.
When the monitoring record fails, it is necessary to perform on-site
playback and obtain the corresponding well-site’s original playback record
curve;
b) The monitoring records shall select paper and printing equipment that can
be stored for a long time. The general paper feeding error is not more than
1%;
c) The monitoring records shall be marked with the vertical and horizontal
proportions. The sel...