Sains Malaysiana 46(11)(2017): 2133-2142

http://dx.doi.org/10.17576/jsm-2017-4611-14

 

Time Lapsed AVAZ Seismic Modeling Research on CO2 Storage Monitoring

(Kajian oleh Pemodelan Luputan Masa AVAZ Seismos ke atas CO2 Pemantauan Simpanan)

 

XUWANG WEI*, YANG YANG & JINFENG MA

 

¹Department of Geology, Northwest University, Xi'an 710072, China

 

²National & Local Joint Engineering Research Center of Carbon Capture and Storage Technology

Northwest University, Xi'an 710072, China

 

Diserahkan: 11 Januari 2017/Diterima: 27 Mei 2017

 

ABSTRACT

CCUS (Carbon Capture, Utilization and Storage) now is a lead way to reduce greenhouse effect such as carbon dioxide emission in the world. This paper presents an integrated overview of seismic monitoring technology when CO₂ injection process. Mainly is time-lapse seismic method .Time-lapse seismic method is a feasible way to monitor CO₂ injection process when CO₂ interaction with minerals, which is proved an effective method in CCUS experiments. AVAZ (Amplitude versus Azimuth) seismic method is proved a useful tool to indentify CO₂ injection process, which can detect fluid-induced seismic anisotropic response and locating where CO₂ flow to in reservoirs, therefore, it's an effective way to monitor CO₂ flow in CO₂ monitoring process. Since we develop AVAZ modelling experiment base on rock physics theory to modeling the time-lapse AVAZ seismic reservoir response. The research show fluid saturation and pressure behave two main factors influence modeling seismic AVAZ response. Meanwhile the AVAZ response can also be detect by seismic AVAZ data.

Keyword: AVAZ modeling; CCUS; rock physics; time lapsed seismic method

ABSTRAK

CCUS (tawanan karbon, penggunaan dan storan) memimpin jalan untuk mengurangkan kesan rumah hijau seperti pancaran karbon dioksida di dunia. Kajian ini memberi gambaran secara kesuluruhan teknologi pemantauan seismos apabila berlaku proses penyuntikan karbon dioksida berfokus kepada kaedah luputan masa seismos. Kajian luputan masa seismos ialah cara tersaur untuk menjalankan eksperimen ini. AVAZ (Amplitude versus Azimuth) kaedah seismos terbukti sebagai kaedah yang efektif di dalam proses CCUS dan ia dapat mengesan bendalir teraruh oleh respon anisotropi seismos dan melokasikan arus karbon dioksida ke takungan. Pemodelan AVAZ dibina berdasarkan teori fizik batuan untuk kajian pemantauan ini. Kajian menunjukkan ketepuan bendalir dan tekanan ialah dua faktor utama yang mempengaruh pemodelan AVAZ ke atas respon seismos.

Kata kunci: Fizik batuan; kajian luputan masa seismos; pemodelan AVAZ

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