Feasibility Analysis of Gas Storage in JB Area Caprock Evaluation

Abstract:

Underground gas storages （UGS） are widely used to store the excess of produced natural gas during periods of low demand, and relieve the pressure during periods of high demand. Depleted natural gas reservoir is generally the best choice against others. Proper selection of a depleted gas reservoir is essential to the succession, steady and reliability of UGS in the long run. Sealing capacity of caprock is an important index for measuring the performance of gas storage reservoir. In order to analysis feasibility of UGS in JB area, the development characteristics of caprock were studied, the sealing gas effectiveness of caprock was evaluated. it was concluded that the main caprock was the formation of evaporative carbonate platform, and the breakthrough pressure of cap rock was high. The cap rocks with good sealing capacity were distributed in the area between S224 well and S39 well. The sealing ability was comprehensively evaluated by use of the development features and sealing capacity of caprock.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 3117-3124
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.3117
• Online since: October 2011
• Authors: Lei Shi, Shu Sheng Gao
• Keywords: Breakthrough Pressure, Caprock, Effective Stress, Sealing Capacity, Underground Gas Storage

References

[1] Kanaga D. Underground gas storage: Issues beneath the surface[C]. SPE 88491, 2004, 1-5.

[2] GUO Xiao, DU Zhimin, GUO Ping, et al. Design and Demonstration of Creating Underground Gas Storage in a Fractured Oil Depleted Carbonate Reservoir[C]. SPE 102397, 2006, 1-14.

DOI: 10.2118/102397-ms

[3] DUNCAN Bate, GAUD Pouliquen, NICK Harrop. 4D Microgravity feasibility study at the Izaute underground gas storage facility[C]. EAGE 67th Conference & Exhibition, 2005, 1-4.

[4] REZA Azin, AMIR Nasiri, ALI Jodeyri Entezari, et al. Investigation of underground gas storage in a partially depleted gas reservoir[C]. SPE 113588, 2008, 1-18.

DOI: 10.2118/113588-ms

[5] V. Langlais, M. Mezghani, N. Lucet, et al. 4D Monitoring of an underground gas storage case using an integrated history matching technique[C]. SPE 95838, 2005, 1-10.

DOI: 10.2118/95838-ms

[6] P. A. Witherspoon. Evaluating a slightly permeable caprock in aquifer gas storage I. Caprock of infinite thickness[J]. Journal of Petroleum Technology, 1967: 949-955.

DOI: 10.2118/1634-pa

[7] Z. Wang and S.A. Holditch. Comprehensive Parametric Simulation Study of the Mechanisms of a Gas Storage Aquifer[J]. Petroleum Society, 2005: 1-8.

DOI: 10.2118/2005-009

[8] D.M. Fourmaintraux, A. -P. Bois, C. Le Goff, et al. Detailed in Situ Stress Measurements for Qualifying the Safety of Underground Gas Storage Overburden[C]. SPE 94253, 2005, 1-7.

DOI: 10.2118/94253-ms

[9] HAO Shisheng, HUANG Zhilong. The Experimental Study and Evaluation of Roofrock of Natural Gas[J]. Acta Sedimentologica Sinica, 1991, (4): 20-26.

[10] FU Guang, CHEN Zhangming, LU Yanfang. Comprehensive Evaluation of Sealing Ability of Mudstone Caprock[J]. Experimental Petroleum Geology, 1998, 20(1): 80-84.

[11] CHEN Zu'an, WU Xiangyang, SUN Deming, et al. Study on relationship between permeability of sandstone and hydrostatic pressure[J]. Chinese Journal of Rock Mechanics and Engineering, 1995, 14(2): 155–159.

[12] HE Yulong, YANG Lizhong. Testing study on variational characteristics of rock mass permeability under loading-unloading of confining pressure[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(3): 415–419.

[13] LUO Qun, SUN Hongzhi. Relationship Between Faulting and The Preservation of Oil and Gas Accumulation[J]. Experimental Petroleum Geology, 2000, 22(3): 225-231.

[14] LI Mingcheng, LI Wei, CAI Feng, et al. Integrative Study of Preservation Conditions of Oil and Gas Pools[J]. Acta Petrolei Sinica, 1997, 18(2): 41-48.

[15] ZHANG Shouliang, SHEN Chen, DENG Jingen. Testing study on the law of permeability variation in process of rock deformation and damage[J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(Supp. ): 885–888. Dolomitite Limestone Rock salt Y11 0 8 16 24 km S25 Eastern part of JB Western part of JB S224 S39 Figure 1. Caprock distribution of UGS in tectoniczone Backpressure Regulator Pressure Transducer Temperature Controlled Oven Overburden Pressure Source Flowmeter ISCO Pump Piston Cylinder Core Holder Figure 2. Caprock permeability determination apparatus 2 1 3 Figure 3. Determination of caprock facies type Figure 4. Gas Permeability vs Effective Stress in M511 Figure 5. Gas Permeability vs Effective Stress in M512 Figure 6. Gas Permeability vs Effective Stress in M513 Figure 7. Gas Permeability vs Effective Stress in M514.

DOI: 10.1016/0148-9062(89)91591-x