CNPC logging accurate detection supports the construction of "super green charging treasure"

Compressed air energy storage power station refers to the energy storage method that uses electric energy for compressed air during the low load period of the grid and releases compressed air to promote turbine power generation during the peak load period of the grid, which is known as "super green charging treasure". The compressed air channel connecting the ground and underground is also known as the "charging treasure electric pile".

In order to ensure the efficient use of the "electric pile", it is necessary to have a certain size of the wellbore, and to ensure that the casing in the wellbore is completely sealed with the formation, to ensure that the compressed air does not "slip" along the gap. These borehole surface sizes are two to four times larger than traditional oil and gas Wells, resulting in increased surface casing and completion sizes. When logging instruments transmit and receive detection signals in such a large wellbore, it will be affected by mud, which will cause serious energy attenuation in the closed-loop process of signal transmission and reception, and the detection accuracy will be interfered.

In this regard, the logging technology team of CPC immediately carried out engineering analysis and design. According to the characteristics of the large size of the well, CPLog series SJC-8B (C) cement-bond comprehensive logging instrument was used to successfully complete various construction tasks in each wellbore by utilizing its low frequency and high energy characteristics, providing reliable data support for the engineering construction.

In recent years, CPC logging has continued to develop and promote efficient technologies such as drilling guidance and optical fiber logging to improve the timeliness and capability of oil and gas exploration and development and comprehensive oil and gas well testing. Upgrade and improve special green technologies such as pulsed neutron tubes, isotope capsules, and sewage reinjection systems, and explore controlled radiation and zero-pollution construction paths; Geothermal development, compressed air energy storage and other projects are steadily advancing, and continue to provide logging wisdom for achieving the goal of "dual carbon".