GB/T 29171-2023 in English

VALID

Rock capillary pressure measurement

Issued on:2023-09-07
Implemented on:2024-01-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $600.00
$582.00

Standard No:	GB/T 29171-2023
Document status:	VALID
Title in English:	Rock capillary pressure measurement
Title in Chinese:	岩石毛管压力曲线的测定
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2023-09-07
Implemented on:	2024-01-01
Superseding:	GB/T 29171-2012 Rock capillary pressure measurement
ICS Classification:	75.020-Extraction and processing of petroleum and natural gas
Chinese Classification:	E12-Petroleum development
Professional Classification:	GB-National Standard
Related Keywords:	edition determination method constant pressure mercury injection capillary pressure capillary pressure curve capillary pressure curve pore capillary pressure measurement introduction analysis
Related Topics:	GB/T 29171 rock Molybdenum working curve curve dsc curve sample curve gravity rock curve in english curve force Rock Mechanics Testing Indium dsc curve Volt-ampere curve voltage mercury rock curve measurement rock line pressure curve meter Curve + Quantitative measurement curve GB/T 29171-2012 force curve gb/t+29171 force curve Pipeline pressure measurement Stability Curve curve management pressure test line curve measurement GBT29171 GB/T 29171-2012 Graphite CV curve Standard curve for measuring aluminum in graphite furnace cv curve measurement Burette calibration curve The slope of the standard curve for lead determination using graphite furnace Fluorescence curve standard curve melting curve international rock mechanics standard rock Standard curve method for determination of petroleum Pipette Standard Curve

《GB/T 29171-2023岩石毛管压力曲线的测定》由TC355（全国石油天然气标准化技术委员会）归口，TC355SC6（全国石油天然气标准化技术委员会油气田开发分会）执行，主管部门为国家标准委。

Introduction

Analysis of the key points of the standard revision

Revision content	2012 edition	2023 edition
Determination method	Constant pressure mercury injection method only	New Constant rate mercury injection instrument (4.2.2)
Data processing	Basic parameter calculation	New centrifuge method core population end water saturation algorithm (5.4.2)
Technical description	No method limitation analysis	New chapters on the characteristics and limitations of each method (4.5/5.5/6.5)

Comparison of core determination methods

Technical breakthrough of mercury intrusion porosimetry

Constant rate mercury intrusion instrument (4.2.2) can separate the following by injecting mercury at an extremely low rate of 0.00005mL/min:

Throat capillary pressure curve
Pore capillary pressure curve
Pore-throat ratio distribution (Appendix A.3)

The pressure sensor has an accuracy of ±0.05%FS and needs to be used in conjunction with a dedicated filtering algorithm (4.4.6.2)

Pore structure characterization system

13 key parameters can be calculated from the capillary pressure curve:

Average throat radius (A.1)
Average pore radius (A.2)
Structural coefficient φ_p (A.10)

Wherein, the calculation formula for the sorting coefficient S_p (A.6) is:

S_p=[∑(r_i-r̄)²×ΔS_i/100]^0.5

Implementation Suggestions

Method	Applicable scenarios	Period
Mercury injection method	Dense core (＜0.1mD)	2-4 hours
Centrifuge method	Medium and high permeability core (≥5mD)	8-12 hours

Note:The mercury injection method must strictly follow the mercury protection requirements of SY/T6014 (4.3.2)

More samples: YD/T 3934-2021 DL/T 368-2010 NB/T 47013.2-2015

Sample only — not a preview of GB/T 29171-2023

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