Shenjia Hydraulics

Release Date:

2022-09-23

What are the key advantages of combined porosity–permeability logging? We’ve previously provided a brief overview of this topic, but we’ve found that many customers still have questions. Today, we’ll take this opportunity to offer a more detailed explanation, hoping it will be helpful to those concerned.

What are the key advantages of integrated logging and permeability measurement?

Porosity-permeability joint measurement

The principle underlying the combined measurement of porosity and permeability is based on Boyle’s Law, with results processed and displayed by computer. In essence, it comprises a suite of techniques that employ various instruments to observe and analyze all characteristics of a core sample. Since a core represents a segment of subsurface rock (or strata), measuring its fracture porosity and permeability is a crucial means of obtaining information about underground formations. In practice, selection and analysis should be tailored to the specific attributes of each reservoir, enabling identification of key issues and resolution of real‑world challenges. At the same time, it is important to recognize the strengths of different methods and apply them appropriately. Core porosity and permeability analyzers are indispensable tools for core analysis. Combined porosity–permeability measurements provide a reliable basis for assessing core permeability and porosity in research institutions across the petroleum, geological, and coal‑mining sectors. Currently, this equipment offers stable performance, automated data acquisition and processing, straightforward operation, and rapid measurement speeds. Following years of development and dedicated effort, we have established a solid reputation in the industry and welcome partners from across the country to forge long‑term collaborative relationships.

Well‑logging and permeability testing can acquire multiple parameters in a single measurement, significantly enhancing data stability and reproducibility. In particular, it can simulate pressures as high as 10,000 psi the overburden pressure of the formation, and can be used to set up test core samples. 8 different confining pressure values. Moreover, the device features a high degree of computer control and operational automation. The computer, equipped with a new software operating system, operates at high speed… USB2.0 Communicates with the host computer; test data is automatically stored on the computer’s hard drive and simultaneously printed, enabling real-time quality‑control data evaluation. The graphical user interface provides online help, and the operational procedures are continuously refined. ; Core–permeability joint measurement has enhanced online fault diagnosis and maintenance. For ultra-low permeability reservoirs, dual-source permeability testing can automatically switch from helium to nitrogen, offering greater precision. This method employs a transient pressure pulse decay technique, yielding higher accuracy in both pressure and flow measurements, and producing more reliable flow rates through pressure‑pulse decay analysis. According to Boyle’s law, even when using a standard volume of known capacity, at a specified initial pressure, the gas expands into the core holder under ambient conditions, diffusing into the core pores.

Having reviewed the above, we’ve now gained an understanding of several key advantages of core‑permeability joint testing. We’ll continue to share more insights in the next installment—so if you have time, be sure to tune in; we’re confident it will prove helpful.