Leached salt cavern design using a fracture criterion for rock salt

1986 ◽  
Vol 23 (1) ◽  
pp. A35
Keyword(s):  
Rock Salt ◽  
Fracture Criterion ◽  
Salt Cavern

scholarly journals Probabilistic Analysis of a Rock Salt Cavern with Application to Energy Storage Systems

2016 ◽  
Vol 50 (1) ◽  
pp. 139-157 ◽  
Author(s):  
Elham Mahmoudi ◽  
Kavan Khaledi ◽  
Shorash Miro ◽  
Diethard König ◽  
Tom Schanz
Keyword(s):  
Energy Storage ◽  
Rock Salt ◽  
Probabilistic Analysis ◽  
Storage Systems ◽  
Energy Storage Systems ◽  
Salt Cavern ◽  
Rock Salt Cavern

Rock Long-Term Strength Parameters Determination of a Salt Cavern Gas Storage

2013 ◽  
Vol 353-356 ◽  
pp. 1685-1688
Author(s):  
Li Na Ran ◽  
Hua Bin Zhang ◽  
Zhi Yin Wang
Keyword(s):  
Mechanical Properties ◽  
Rock Salt ◽  
Gas Storage ◽  
Surrounding Rock ◽  
Creep Process ◽  
Term Strength ◽  
Salt Cavern ◽  
Study Results ◽  
Salt Cavern Gas Storage

In order to determine the long-term mechanical properties of surrounding rock of salt cavern gas storage, long tri-axial creep test studies on rock salt of the field were carried out. Based on the test data, long-term strength of rock salt was determined, and comparatively analysis was conducted combined with of the instantaneous test. The study results show that: Considering the axial strain, radial strain and volumetric strain to determine the long-term strength of rock salt can ensure reliability of the results. Under the same condition, the less salt content, the value of long-term strength is higher. Tri-axial creep process has a different effect degree between cohesion and internal friction angle; it is more sensitive to cohesion. The strain limit should be considered for the stability analysis of multi-bedded salt cavern gas storage construction and pay more attention about the mechanical properties of the interlayer parts. The study results provide references for researching the surrounding rock long-term mechanical properties of salt cavern gas storage.

Research on the Technology of Three-Dimensional Surface Topological Reconstruction of Underground Rock Salt Cavern Based on Sonar Detection Data

2012 ◽  
Vol 500 ◽  
pp. 218-225
Author(s):  
Jian Zhong Chen ◽  
Ye Hua Sheng ◽  
Yong Zhi Wang
Keyword(s):  
Rock Salt ◽  
Three Dimensional ◽  
Scientific Basis ◽  
Boundary Representation ◽  
Surface Model ◽  
Social Significance ◽  
Technological Support ◽  
Salt Cavern ◽  
Rock Salt Cavern ◽  
Dimensional Surface

After analyzing the characteristics of rock salt and the feasibility and importance of using underground rock salt cavern as energy stockpiles, this paper explains in detail about the principle of sonar detection technology in cavern measuring and its data organization. This paper studies the technology of three-dimensional surface topological reconstruction of underground rock salt cavern based on sonar detection data with half-edge data structure and boundary representation models. Meanwhile, by conducting validity check for constructed surface model and repair of possible defects, the paper finds correct and effective three-dimensional surface models of underground rock salt cavern, and provides effective data base for the stability analysis, creep analysis and other numerical simulations of underground rock salt cavern. This method, with important economic and social significance, can provide a scientific basis and technological support for the construction of caverns, especially for the safe and rational use of underground rock salt cavern.

scholarly journals Innovative Concept for Analysing a Rock Salt Cavern under Cyclic Thermo-mechanical Loading

2016 ◽  
Vol 97 ◽  
pp. 478-485
Author(s):  
A.v. Blumenthal ◽  
E. Mahmoudi ◽  
K. Khaledi ◽  
D. König ◽  
T. Schanz
Keyword(s):  
Mechanical Loading ◽  
Rock Salt ◽  
Salt Cavern ◽  
Rock Salt Cavern ◽  
Innovative Concept

scholarly journals Microscopic Pore Structure of Surrounding Rock for Underground Strategic Petroleum Reserve (SPR) Caverns in Bedded Rock Salt

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1565 ◽  
Author(s):  
Nan Zhang ◽  
Wei Liu ◽  
Yun Zhang ◽  
Pengfei Shan ◽  
Xilin Shi
Keyword(s):  
Crude Oil ◽  
Pore Structure ◽  
Rock Salt ◽  
Surrounding Rock ◽  
Self Healing ◽  
Rock Interaction ◽  
Salt Cavern ◽  
Term Operation ◽  
Strategic Petroleum Reserve ◽  
Salt Caverns

Using salt caverns for an underground strategic petroleum reserve (SPR) is considered as an ideal approach due to the excellent characteristics of low porosity, low permeability, self-healing of damage, and strong plastic deformation ability of rock salt. Salt deposits in China are mostly layered rock salt structures, with the characteristics of many interlayers, bringing great challenges for the construction of SPR facilities. Studying the microscopic pore characteristics of the rock surrounding SPR salt caverns in different environments (with brine and crude oil erosion) is necessary because the essence of mechanical and permeability characteristics is the macroscopic embodiment of the microscopic pore structure. In this paper, XRD tests and SEM tests are carried out to determine the physical properties of storage media and surrounding rock. Gas adsorption tests and mercury intrusion tests are carried out to analyze the microscopic pore structure, specific surface area variation and total aperture distribution characteristics of SPR salt cavern host rock. Results show that: (1) Large numbers of cores in interlayer and caprock may provide favorable channels for the leakage of high-pressure crude oil and brine. (2) The blockage of pores by macromolecular organic matter (colloid and asphaltene) in crude oil will not significantly change the structural characteristics of the rock skeleton, which is beneficial to the long-term operation of the SPR salt cavern. (3) The water–rock interaction will bring obvious changes in the micro-pore structure of rock and increase the leakage risk of the storage medium. The results can provide theoretical bases and methods for the tightness analysis of China’s first underground SPR salt cavern.

scholarly journals An investigation into design concepts, design methods and stability criteria of salt caverns

2019 ◽  
Vol 74 ◽  
pp. 14 ◽  
Author(s):  
Rahim Habibi
Keyword(s):  
Structural Stability ◽  
Rock Salt ◽  
Mechanical Stability ◽  
Nonlinear Behavior ◽  
Stability Criteria ◽  
Temperature Changes ◽  
Salt Cavern ◽  
Design Concepts ◽  
Mechanical Factors ◽  
Salt Caverns

Salt rock has been used as hast rock to storing hydrocarbons and disposing nuclear wastes because of its low permeability. On other hand it deforms under even low deviatoric stress which threatens the structural stability of salt caverns. Rock mechanical stability is one of important stages in salt cavern’s design and construction, though mechanical factors (such as nonlinear behavior of rock salt), thermal factors (such as temperature changes during injection and production) and hydraulic factors (such as salt permeability and viscosity of stored material) affect on short term and long term behavior of salt cavern. Various criteria and methods have been investigated for salt cavern’s design and stability analysis. In this paper, by taking into account the importance of structural stability of salt cavern, the general behavior of rock salt and salt cavern are given. It reviews the various design concepts and methods and, in the following, stability criteria including stress-based and damage-based are also discussed. It is assigned that the RD stability criterion is more comprehensive than others.

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