DZ/T 0216-2010: Specifications for coalbed methane resources/reserves

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Scope

This Standard specifies the classification and grading standard, definitions, reserves
estimation methods, reserves evaluation standard, and preparation requirements for reserves
report of China's coalbed methane resources / reserves.
This Standard is applicable to the ground-exploited-mine’s coalbed methane resources /
reserves assessment and report preparation. It may be used as basis for the coalbed
methane resources / reserves estimation review, the preparation of development program
and medium-term and long-term planning in the coalbed methane resources / reserves
management and mining economic activities. Regional survey and resources evaluation for
coalbed methane resources, or resources / reserves estimation and report preparation of for
exploitation and exploitation of coalbed methane by other means can be executed by
reference.
2  Normative references
The articles contained in the following documents have formed this Standard when they are
quoted herein. For the dated documents are quoted, all the modifications or revisions made
thereafter shall be applicable to this Standard.
GB/T 212-2008 Proximate analysis of coal
GB/T 217-2008 Determination of true relative density of coal
GB/T 6949-1998 Determination of apparent relative density of coal
GB/T 13610-2003 Analysis of natural gas by gas chromatography
GB/T 19492-2004 Classifications for petroleum resources / reserves
GB/T 19559-2008 Method of determining coalbed’s gas content
GB/T 19560-2008 Experimental method of high-pressure isothermal adsorption to coal
DZ/T 0215-2002 Specifications for coal, peat exploration
DZ/T 0217-2005 Regulation of petroleum reserves estimation
3  Terms and definitions
The following terms and definitions apply to this Standard.
3.1
SN/T 2034-2007
Coalbed methane (referred as CBM)
The hydrocarbon gas of which the main component is methane; it is absorbed in the coalbed;
the original state is mainly absorbed to the particle surface of the coal matrix, and is
supplemented and dissociated in cleats, cracks and pores or dissolved in coalbed water. This
Standard specifies that the required estimating resources / reserves mainly refers to adsorbed
gas.
3.2
Coalbed methane resources
The total amount of coalbed methane which is occurred in coalbed, according to the
estimation by certain geological and exploration engineering basis; is recoverable in current
time or future; and has the realistic economic significance and potential economic significance.
According to with- and without- prospecting-well engineering control, it is divided into the
known reserves and potential reserves to be discovered.
3.3
Coalbed methane reserves
3.3.1
Original coalbed methane in place
Under the original state, the total coalbed methane which is occurred in the known coalbed
with a clear estimation boundary; has realistic economic significance. According to
exploration degree, it is divided into 3 levels - forecasted, controlled, and proved.
3.3.2
Recoverable reserves
The recoverable part of the original coalbed methane in place. It refers to using the existing
technologies and theoretical estimation or analogy to calculate the recoverable total coalbed
methane, under the current laws and policies and market conditions. It is divided into
“controlled” and “proved” levels, according to exploration degree.
For recovery-rate parameter, it may be obtained by adopting the methods such as analogy
and numerical simulation of the same domestic or foreign geological conditions.
3.3.3
Commercial recoverable reserve
It is part of the recoverable reserves. It refers to using methods such as theoretical estimation
or analogy to calculate the recoverable total coalbed methane, under the current economic
and technical conditions. It can be divided into the “controlled” and the “proved” levels,
SN/T 2034-2007
according to exploration degree.
3.3.4
Developed initial reserves
The proved commercial recoverable reserves that is consumed by the corresponding
cumulative production. Generally it may be obtained by using the cumulative production to be
divided by recovery-rate.
3.3.5
Remainder proved initial reserves (referred as remainder reserves)
The difference BETWEEN proved commercial recoverable reserves AND developed initial
reserves is the remainder proved initial reserves. Remainder proved initial reserves are
divided into “built capacity remainder commercial recoverable reserves” and “un-built capacity
remainder commercial recoverable reserves”.
Built capacity remainder commercial recoverable reserves refer to the remainder proved initial
reserves that is occupied by under-built or built capacity.
Un-built capacity remainder commercial recoverable reserves refer to the difference
BETWEEEN the remainder proved initial reserves AND built capacity remainder commercial
recoverable reserves.
3.3.6
Coalbed methane reserves abundance
The coalbed methane reserves in the unit of coalbed containing-gas area.
3.4
Coalbed methane well
3.4.1
Prospecting well
The engineering well which adopts drilling-well, supplemented by logging-well and coring
analysis test method, to determine the parameters such as coalbed’s depth, thickness,
struct...

Basic Data

Standard ID	DZ/T 0216-2010 (DZ/T0216-2010)
Description (Translated English)	Specifications for coalbed methane resources/reserves
Sector / Industry	Geological Industry Standard (Recommended)
Classification of Chinese Standard	D03
Classification of International Standard	73.020; 75.160.01
Word Count Estimation	21,233
Date of Issue	2011-01-13
Date of Implementation	2011-03-01
Older Standard (superseded by this standard)	DZ/T 0216-2002
Quoted Standard	GB/T 212-2008; GB/T 217-2008; GB/T 6949-1998; GB/T 13610-2003; GB/T 19492-2004; GB/T 19559-2008; GB/T 19560-2008; DZ/T 0215-2002; DZ/T 0217-2005
Regulation (derived from)	?Ministry of Land and Resources Announcement (2011.01.13)
Issuing agency(ies)	Ministry of Land and Resources
Summary	This standard specifies the country of coalbed methane resources/reserves grading standards and definitions, preparation of required reserves evaluation criteria and reserves reporting, reserves estimation methods. This standard applies to ground exploration and exploitation of coalbed methane resource/reserve estimate and report writing, as coalbed methane resources/reserves management, mining economic activities in resource/reserve estimation assessment, development programs and long-term planning basis. CBM resources in the regional surveys, resource assessment, or other means of exploration and exploitation of coalbed methane resource/reserve estimation and reporting to write implementation.