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Practices for core analysis
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GB/T 29172-2012
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Basic data | Standard ID | GB/T 29172-2012 (GB/T29172-2012) | | Description (Translated English) | Practices for core analysis | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | E12 | | Classification of International Standard | 75.020 | | Word Count Estimation | 238,220 | | Adopted Standard | API RP 40-1998, MOD | | Regulation (derived from) | National Standards Bulletin No. 41 of 2012 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the drill cores, processing, storage and preparation of core analysis, test methods, technical requirements and preparation of the report format. This standard applies to the reservoir exploration, development process, the drilling | GB/T 29172-2012: Practices for core analysis---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Practices for core analysis
ICS 75.020
E12
National Standards of People's Republic of China
Core analysis methods
Issued on. 2012-12-31
2013-07-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 design coring program 1
2.1 Overview 1
2.2 coring device 2
2.3 conventional coring system 2
2.4 Special coring system 4
2.5 cable coring 5
2.6 Directional Coring 6
2.7 coring bit 7
2.8 Characteristics of the drill fluid pumping 8
2.9 core claw 8
3 wellsite core handling and preservation methods 9
3.1 Overview 9
3.2 Core Processing Method 10
3.3 site sampling and analysis 15
Special Considerations 3.4 Types of rock core processing 19
3.5 Save 22 cores
3.6 core processing method related to maintaining wettability 25
3.7 Note 25
4 core screened and prepared 26
4.1 Overview 26
4.2 core description 26
4.3 core gamma gamma spectrum measurement with the core measure 27
4.4 Core Imaging 28
4.5 30 core drill and preparation
4.6 core cleaning 32
4.7 Drying 34
35 4.8 Sample Storage
Determination of fluid saturation of 35 5
5.1 Overview 35
5.2 atmospheric dry distillation 36
5.3 distillation extraction method (DEANSTARK) 44
5.4 solvent washing method (KarlFischer titration) 66
5.5 Scanning 70
5.6 Analysis of 71 coal samples
5.7 Oil shale 73
5.8 containing gypsum core 75
6 Determination of porosity 78
6.1 Overview 78
6.2 The total volume measurement (sample plunger) 81
6.3 Measurement of pore volume 88
Organic-rich rocks 102 6.4
Determination of the permeability of 7 105
7.1 Overview 105
7.2 Theory 110
7.3 Determination of the practical application of the steady state permeability of 123
Theory and Application 7.4 unsteady permeability measured 138
7.5 The accuracy and precision of 145
7.6 Calibration Instruments 150
7.7 Test Method for Permeability different formulas 153
8 additional test 168
8.1 Overview 168
8.2 168 rock characterization
8.3 Particle Size Distribution 169
179 oil density 8.4
8.5 184 oil properties
8.6 acid solubility 186
8.7 Determination of formation water salinity of 188
9 to prepare reports 197
9.1 Overview 197
9.2 Report Format 198
9.3 Quality Assurance 204
9.4 QA/QC Statute 205
Appendix A (informative) gas law deviation factor table 215
References 224
Foreword
This standard uses redrafted Law Amendment uses APIRP40.1998 "Recommended Practice for core analysis" (in English).
For ease of use, this standard made the following editorial changes.
--- The standard name to read. "core analysis methods."
--- Removed APIRP40.1998 cover, foreword, introduction and policy statement, delete the American Petroleum Institute's environment, health
Health, safety and mission guidelines.
--- The preparation of this standard preface.
--- Increasing the scope of this standard, as Chapter 1, Chapter 2 and APIRP40. in 1998 corresponding to Chapter 1, Section 3 and API
RP40. Chapter 2 of the 1998 correspondence, and so on.
The term --- "this publication" to the "standard."
--- The APIRP40.1998 Section 2,3,4,5,6,7 chapter references listed in footnote focus of this standard reference.
--- The APIRP40.1998 Chapter 6 Reference Table 6-7 and Table 6-8 and Table 6-9 placed in Appendix A.
--- Of imperial units in accordance with international data conversion, and marked the former imperial units in parentheses.
--- Removed APIRP40.1998 directory in maps, tables layout, remove each chapter directory.
--- Removed APIRP40.1998 Table 8-9 lithologic description of standard abbreviations (in alphabetical order terms) and Table 8-10 describe lithology
The standard abbreviations (abbreviations according to alphabetical order).
--- In accordance with the provisions of GB/T 20000.2-2009 is amended as follows.
1) rewritten APIRP40.1998 hierarchical number, for example, "on × chapter" rewrite "×";
2) rewritten APIRP40.1998 tables, figures, formulas numbers, use parentheses with Arabic numerals starting from 1
Numbering;
3) In order to avoid various chapters of the bar column item number and chapter number of conflicts, post-column item number in parentheses to half the number of Arab belt
Latin small letter word number or serial number after further use with half parentheses.
--- Corrected APIRP40. in 1998 appears editorial errors.
1) APIRP40.1998 2.4.5 in -40 ℉ (-40 ℃) Change -4.44 ℃ (-40 ℉);
2) APIRP40.1998 3.3.6 3
Count rate
Background count rate > 1 Change
3 count rate
Background count rate > 1;
3) APIRP40.1998 in 4.2.1.3 in 6.4cm (1/4in) is changed to 6.4mm (1/4in); Figure 4-2 (now Figure 3)
Label "● oil relative density of 34 ° API" should be replaced by "relative density ○ oil 34 ° API";
4) APIRP40.1998's 4.3.7.3f in 240 ℉ (117 ℃) is changed to 116 ℃ (240 ℉);
5) APIRP40.1998 should be replaced by the 4.6.2e in 2.33mm 2.38mm;
6) APIRP40.1998 4.8.5 Change in △ wWCORR Vwcorr;
7) APIRP40.1998 5.3.2.1.1.1 of the formula (14) P1V1z1T1 =
P1V1
z2T2
Change P1V1
z1T1 =
P2V2
z2T2
8) APIRP40.1998 7.5.1.5.2 of the formula in an-C15 (%) = [( > n-C15 area)/At] × 100 more
To a) n-C15 (%) = [( > n-C15 area)/At] × 100;
9) APIRP40.1998 7.7.3.1.3 of the formula Vb = [(W/Dg)/1-φ]] is changed to Vb = [(m/Dg) /
(1-φ)];
10) APIRP40.1998 7.3.1.3 The second column of Table 7-2 in the eleventh row < 30 to ≤30 Table 24.
This standard by the National Standardization Technical Committee of Oil and Gas (SAC/TC355) centralized.
This standard was drafted. China Shengli Oilfield Company, SINOPEC Research Institute of Geological Sciences, China Petroleum Exploration and Development Research Institute.
The main drafters of this standard. rock song Tao, Dai Zhijian, LI Gui-mei, Wang Sheng, Jia Lihua, Zhang Quan, Zhou Jing, Cui Hongyan, Zhang Zubo, Zhang Lili, Xue
Seita, Lvsi Zhou, Xing.
Core analysis methods
1 Scope
This standard specifies the drill cores, processing, storage and preparation of core analysis, test methods, requirements and preparation of the report format.
This standard applies to oil and gas exploration, development, drilling and coring coring test and analysis of rock samples, other sub-core
Analysis should also refer to execution.
2 design coring program
2.1 Overview
This chapter describes coring program design, decision-making and influencing factors of complexity.
2.1.1 Principle
Coring program is designed with many engineering projects, based on return on investment as a precondition. In well testing, well logging, conventional cores, cuttings or
Sidewall coring and other information-based design.
Coring design must first determine the coring purposes. This work should be engaged in physical reservoir, reservoir geology, drilling and production of technical staff
To complete. Wherein each of the final budget should be at a lower unit cost to produce more oil and gas production for the purpose. Multi-coring design needs
Face many factors weighed, including consideration of budget constraints, location, and time. Borehole size, inclination angle, temperature, pressure, and rock
Type of coring tool of choice.
Good design and communication is the key to success coring.
2.1.2 Objective
Coring purpose is to obtain reservoir data, so use this data to better enhance oil recovery. These include. geology, reservoir
Content physics and reservoir engineering aspects.
There are geological rock types, sedimentary environment, type of porosity, mineral composition, geochemical, and geological rock crevices to FIG.
There are physical aspects of reservoir permeability reservoir data (permeability and porosity relationship), relative permeability, capillary pressure data logging accurate count
Operator Information (electrical materials, particle density, core gamma logging, mineral composition and cation exchange capacity, etc.) and enhanced oil recovery.
Reservoir engineering has estimated reserves (porosity, fluid saturation) and the drilling and completion studies (and reservoir fluid compatibility studies, gravel
Stone filling the required particle size and rock mechanics, etc.).
2.1.3 coring fluid
2.1.3.1 coring fluid selection should consider the following four points.
a) security;
b) The main purpose of coring;
c) environmental factors;
d) costs.
2.1.3.2 prioritize safety factors. Select coring coring fluid or drilling fluid depends on the purpose. Drilling should be not only to maintain predictable
Layer of pressure, but also can play a clean, lubricate and maintaining wellbore stability. Coring fluid should have a low quiescent and relatively low fluid loss
Dynamic instantaneous water loss rate in order to reduce the degree of washing filtrate cores.
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