Can well‑logging and permeability testing yield multiple parameters in a single measurement?
Shenjia Hydraulics
Release Date:
2022-10-11
Can a single combined porosity–permeability measurement yield multiple parameters? We’ve previously provided a brief overview of this issue, but we’ve found that many customers still have questions. Today, we’ll take this opportunity to explain it in detail, hoping to offer valuable guidance to those concerned.
Can a single combined porosity–permeability measurement yield multiple parameters? We’ve previously provided a brief overview of this issue, but we’ve found that many customers still have questions. Today, we’ll take this opportunity to explain it in detail, hoping to offer valuable guidance to those concerned.
Core permeability–porosity logging is a core‑property analysis instrument that provides reliable data for determining core permeability and porosity, serving research institutions in the petroleum, geological, and coal industries. This instrument boasts stable performance, automated data acquisition and processing, simple operation, and rapid measurement. In practice, selection and analysis should be tailored to the specific characteristics of the reservoir, focusing on the primary controlling factors to address real‑world challenges. At the same time, it is important to leverage the strengths of different technologies and integrate them into implementation. Core permeability–porosity logging is an essential tool for core analysis. It automatically records gas flow rate and pressure parameters, and by combining these measurements, it calculates both vertical and horizontal permeability values of the core. The measurement principle underlying this technique is Boyle’s law: using a standard volume of known dimensions, at a specified initial pressure, the gas expands into the core cavity under atmospheric pressure, diffusing into the core pores. By analyzing changes in pressure and the known volume, the measured rock sample can be characterized via the gas equation, and porosity can be determined from the effective pore volume and grain volume.
The core‑permeability combined measurement system consists of a high-pressure regulation system, a low-pressure regulation system, a core holder, flow meters, a pressure measurement system, valves, piping, and other components. By applying an appropriate pressure differential, the pressure drop and flow rate are measured, and the sample’s permeability is calculated. During operation, insert the core into the core holder and tighten it securely; then use the manual booster pump to increase the annular pressure until the desired value is reached (with all valves closed), which is typically higher than the displacement pressure. 1-2mpa ; Open the annular pressure valve to apply annular pressure to the support, seal the core, and then close the annular pressure valve. Once completed, you may release the high-pressure regulating valve and open the valve. 1 Release the initial adjustment pressure, then close the valve. 1 ; then adjust the high-pressure regulating valve to the test pressure; open the valve 1 , allowing gas to flow into the valve core; then you can select an appropriate flow meter to measure the gas flow rate. Typically, permeability tests are conducted in descending order of aperture size; once the test pressure and flow rate have stabilized, record the corresponding values; based on these pressure and flow measurements, along with other relevant parameters, calculate the gas permeability; if the test pressure falls below 1MPa , a low-pressure regulating valve can be used to adjust the pressure. First, set the outlet of the high-pressure regulating valve to 1.2MPa The following. Note that it must not exceed 1.2MPa , otherwise the low-pressure regulator may be damaged.
That concludes our brief overview of how integrated porosity–permeability logging can yield multiple parameters in a single measurement. In our next installment, we’ll share even more engaging content—just keep an eye on our website to stay informed and don’t miss out on these valuable insights. We hope this information proves helpful to those in the field.
Related News
Providing you with efficient and reliable petroleum instrumentation solutions.
Mobile phone:13951382099
Phone:0513-88966639
Corporate email:
hahxsyyq@163.com(Large file)
huaxing@hxsyyq.com(Small file)
Address: No. 18, Rixin Road, Hai’an City, Jiangsu Province
Copyright © 2026 Nantong Huaxing Petroleum Instrument Co., Ltd.
Website Development:China Enterprise Dynamics Nantong|SEO