GB/T 19492-2020 PDF in English
GB/T 19492-2020 (GB/T19492-2020, GBT 19492-2020, GBT19492-2020)
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Classifications for petroleum resources and reserves
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| GB/T 19492-2004 | English | 228 |
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GB/T 19492-2020: PDF in English (GBT 19492-2020) GB/T 19492-2020
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 75.010
E 20
Replacing GB/T 19492-2004
Classifications for Petroleum Resources and
Reserves
ISSUED ON: MARCH 31, 2020
IMPLEMENTED ON: MAY 1, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Terms and Definitions ... 4
3 Classification of Exploration and Development Stage ... 6
3.1 Basis of Stage Classification ... 6
3.2 Pre-exploration Stage ... 6
3.3 Evaluation Stage ... 6
3.4 Development Stage ... 6
4 Classification of Undiscovered Petroleum Initially-in-place and Discovered
Petroleum Initially-in-place ... 7
5 Development Status ... 9
5.1 Basis of Status Classification ... 9
5.2 Undeveloped ... 9
5.3 Developed ... 9
6 Usage and Release ... 9
Classifications for Petroleum Resources and
Reserves
1 Scope
This Standard specifies the classification and release of mineral resources and
reserves of petroleum, natural gas, shale gas and coalbed methane (hereinafter
collectively referred to as petroleum).
This Standard is applicable to the statistics and release of total petroleum initially-in-
place, the management and planning of petroleum mineral products, the policy
formulation, the undiscovered petroleum initially-in-place and reserve estimation, the
evaluation and the formulation of related technical standards.
2 Terms and Definitions
The following terms and definitions are applicable to this document.
2.1 Total Petroleum Initially-in-place
Total petroleum initially-in-place refers to available natural accumulations of petroleum
formed by the geological processes in the earth’s crust. It is characterized by quantity,
quality and spatial distribution. Its quantity is expressed by ground conditions
converted to 20 °C and 0.101 MPa. It may be further classified into two types:
undiscovered petroleum initially-in-place and discovered petroleum initially-in-place.
2.2 Undiscovered Petroleum Initially-in-place
Undiscovered petroleum initially-in-place refers to the quantity of undiscovered and
unverified petroleum calculated through the study of comprehensive petroleum
geological conditions, geological laws and geological surveys.
2.3 Discovered Petroleum Initially-in-place
Discovered petroleum initially-in-place refers to the quantity of petroleum estimated in
accordance with seismic, drilling, logging and testing data after the petroleum has been
discovered in drilling. It includes possible petroleum initially-in-place, probable
petroleum initially-in-place and proved petroleum initially-in-place. These three levels
of geological reserves proceed from low to high in accordance with the degree of
exploration and development, and the degree of geological understanding.
2.3.1 Possible petroleum initially-in-place
Possible petroleum initially-in-place refers to the estimated quantity of petroleum of
2.5.2 Remaining probable commercial recoverable reserves
Remaining probable commercial recoverable reserves refers to the probable
commercial recoverable reserves minus the cumulative petroleum production.
2.5.3 Probed commercial recoverable reserves
Proved commercial recoverable reserves refers to the quantity of petroleum that can
be commercially recovered in the probed technical recoverable reserves and estimated
in accordance with the reasonably predicted economic conditions (such as: price,
production allocation and cost, etc.).
2.5.4 Remaining proved commercial recoverable reserves
Remaining proved commercial recoverable reserves refers to the proved commercial
recoverable reserves minus the cumulative petroleum production.
3 Classification of Exploration and Development Stage
3.1 Basis of Stage Classification
In accordance with the degree of work from low to high, the exploration and
development stage is divided into three stages: pre-exploration stage, evaluation stage
and development stage.
3.2 Pre-exploration Stage
Through seismic and other geophysical and geochemical exploration, and pre-
exploration well drilling, delineate favorable petroleum-bearing zones and preferred
favorable traps (sweet-hearts); basically, find out the characteristics of the structures,
reservoir stratums, cap rocks and petroleum reservoirs; discover the petroleum
reservoirs.
3.3 Evaluation Stage
After discovering the petroleum reservoirs in the pre-exploration stage, conduct
seismic exploration and appraisal well drilling to find out the geological features, such
as: structural morphology, reservoir distribution and changes in reservoir physical
properties, as well as petroleum reservoir characteristics, reservoir types, driving types,
fluid properties, distribution and production capacity characteristics; clarify the
technical conditions of exploitation and economic value of development; complete the
development concept design.
3.4 Development Stage
Formulate development schemes. In accordance with the development schemes,
implement the development well pattern drilling; complete the production capacity
J---Probable Technical Recoverable Reserves;
K---Probable Commercial Recoverable Reserves;
L---Remaining Probable Commercial Recoverable Reserves.
Figure 1 -- Types and Estimation Flow Diagram of Undiscovered Petroleum
Initially-in-place and Discovered Petroleum Initially-in-place
4.2 The undiscovered petroleum initially-in-place is no longer classified.
4.3 The discovered petroleum initially-in-place is classified into three levels: possible
petroleum initially-in-place, probable petroleum initially-in-place and proved petroleum
initially-in-place.
4.4 In the estimation of the possible petroleum initially-in-place, it is necessary to
preliminary find out the structural morphology and the conditions of the reservoir
stratum. The petroleum flow has been obtained, or the petroleum reservoir has been
found through drilling, or it is in the vicinity of the zones with the proved petroleum
initially-in-place and the probable petroleum initially-in-place. In addition, the existence
of the petroleum reservoir has been predicted, and the value of further exploration is
proved through comprehensive analysis. The degree of geological reliability is low.
4.5 In the estimation of the proved petroleum initially-in-place, it is necessary to
basically find out the structural morphology, the changes of the reservoir stratum, the
distribution of the petroleum reservoir, the types of the petroleum reservoir, the fluid
properties and production capacity, etc. Or it is adjacent to the zones with the proved
petroleum initially-in-place, with a moderate degree of geological reliability. It may be
used as the basis for the evaluation of the petroleum reservoir and the formulation of
the development concept design (development scheme).
4.6 In the estimation of proved petroleum initially-in-place, it is necessary to find out
the structural morphology, the distribution of the petroleum reservoir, the type of the
reservoir space, the type of the petroleum reservoir, the type of driving, the fluid
properties and production capacity, etc.; the fluid interface or the bottom boundary of
the lowest petroleum reservoir is confirmed by drilling, logging, testing or pressure data;
there shall be a reasonable degree of drilling control or a well pattern deployment
scheme for primary development. The degree of geological reliability is high.
4.7 In the estimation of technically recoverable reserves, estimate the probable
technical recoverable reserves in the probable petroleum initially-in-place in
accordance with the technical conditions of exploitation; estimate the proved technical
recoverable reserves in the proved petroleum initially-in-place in accordance with the
technical conditions of exploitation.
4.8 In the estimation of commercial recoverable reserves, estimate the probable
commercial recoverable reserves in the probable technical recoverable reserves in
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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