Cross - Hole Seismic (CHS)
Surface Wave Seismic Survey Service

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What Is Cross - Hole Seismic?

Cross-hole Seismic (CHS) is a method of subsurface imaging that uses seismic waves to create images of the subsurface. It involves using two or more boreholes, in which a source of seismic energy is activated in one borehole and the resulting seismic waves are recorded in the other. The recorded data is then analysed to create images of the subsurface, which can be used to identify rock formations, fractures, and other subsurface features.
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What Is The Cross - Hole Seismic Used For?

Cross-hole Seismic (CHS) is used for a variety of purposes in the oil and gas industry, mining, and geothermal drilling such as:

Cross-hole Seismic can be used to identify the presence, orientation and properties of hydrocarbon-bearing formations, which can help in the exploration and production of oil and gas.
Cross-hole Seismic can be used to evaluate the condition of the well, detect any signs of damage or deformation, which can cause well integrity issues and to monitor the changes in rock and fluid properties with time.
Cross-hole Seismic can detect natural fractures in rock formations that can affect the flow of fluids and the production of oil and gas.

Cross-hole Seismic can be used in mining drilling to identify the presence of mineral deposits and in geothermal drilling to identify the presence of hot water or steam.

 

Cross-hole Seismic can be used to monitor the changes of rock and fluid properties with time, to track the production of oil and gas and to identify the presence of changes in the reservoir that may affect the production.

 

Shallow seismic surveys can be used in exploration of shallow mineral, geothermal and geotechnical resources, and also in civil construction projects such as highway and railway projects, and in the study of natural hazards such as sinkholes.

How Does Cross - Hole Seismic Different From
Shallow Seismic Survey?

Shallow seismic and Cross-hole seismic (CHS) are both methods of subsurface imaging that use seismic waves to create images of the subsurface, but they have some critical differences in terms of their applications, methods, and results.

Applications

Cross-hole Seismic is used for deeper subsurface imaging, such as identifying rock formations, fractures, and other subsurface features at depth.

Methods

Cross-hole Seismic involves using two or more boreholes, in which a source of seismic energy is activated in one borehole and the resulting seismic waves are recorded in the other.

Results

Cross-hole Seismic provides images of the deeper subsurface. It also provides high-resolution images of the subsurface which allows for a better understanding of subsurface features at depth.

Overall, while Shallow Seismic and CHS methods use seismic waves to image the subsurface, they have different applications and results, and they are often used in combination with other subsurface imaging methods to provide a more comprehensive understanding of the subsurface.