Sensitivity of storage field performance to geologic and cavern design parameters in salt domes.

Ehgartner, Brian L. (Sandia National Laboratories, Albuquerque, NM) ; Park, Byoung Yoon

关键词: CREEP;    DESIGN;    DILATANCY;    FRACTURING;    PERFORMANCE;    SENSITIVITY;    STORAGE;    STRATEGIC PETROLEUM RESERVE;    THICKNESS;    SALT CAVERNS;    SALTS Strategic petroleum reserve.;    United States;    Strategic Petroleum Reserve;    Salt domes.;   

DOI  :  10.2172/959108
RP-ID  :  SAND2009-1278
PID  :  OSTI ID: 959108
Others  :  TRN: US201016%%554

美国|英语

来源: SciTech Connect

【 摘 要 】

A sensitivity study was performed utilizing a three dimensional finite element model to assess allowable cavern field sizes for strategic petroleum reserve salt domes. A potential exists for tensile fracturing and dilatancy damage to salt that can compromise the integrity of a cavern field in situations where high extraction ratios exist. The effects of salt creep rate, depth of salt dome top, dome size, caprock thickness, elastic moduli of caprock and surrounding rock, lateral stress ratio of surrounding rock, cavern size, depth of cavern, and number of caverns are examined numerically. As a result, a correlation table between the parameters and the impact on the performance of storage field was established. In general, slower salt creep rates, deeper depth of salt dome top, larger elastic moduli of caprock and surrounding rock, and a smaller radius of cavern are better for structural performance of the salt dome.