An investigation of time dependent behavior of rock salt- A Review

Stability of salt formations for hydrocarbon storage is important. Thus, it has to be devoided from crack initiation and expanding in along of caverns boundaries. Because of special properties and applications of salt rocks, they have extensively been studied in recent decades. Salt formations are very different in terms of mineralogy, stratification properties, tectonic history, etc. Hence, because of caverns stability that results in safety factor increase, each of the properties should be investigated. In addition, salt behaves as fluid in long term in which it flows even on very small devoitrotic stress and the stress effect can be eliminated by grains deformation. Thus, salt formations are one of best options for hydrocarbon storage. In other words, solubility of salt in water and creation of caverns by leaching cause salt to be considered in view of economical challenges. Moreover, behavior of salts is affected by temperature changes in which it is one of the most important factors in salt caverns stability. In this paper, as a review, some factors such as inclusion, temperature, etc. that affect the design and stability of salt caverns are investigated.

Keywords:

Mechanical behavior , Salt rock , Salt creep , Grain size