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Role of Geomechanics in Petroleum Production in Xinjiang Oil Field, China
Xinjiang oil field is at the heart of the Belt and Road Initiative (BRI), and special technologies like hydraulic fracturing treatments and thermally enhanced oil recovery technology were applied for unconventional petroleum productions in the Xinjiang oil field. Geomechanics is particularly important in the petroleum productions in these unconventional reservoirs. Key points include the determination of 3D in-situ stress, laboratory characterization of poromechanical properties of reservoir rocks, and thermal-hydro-mechanical coupled modeling on the dilation yield process and induced permeability enhancement. We use cases from two sites to demonstrate the effectiveness of using geomechanical dilation to promote petroleum productions in tight oil and oil sands reservoirs, respectively. For the case of a tight oil reservoir, where hydraulic fracturing was applied, the result indicates that rock dilation, if proactively utilized, can enhance the fluid deliverability from the reservoir into the main hydraulic fracture. For the case of heavy oil reservoir where the SAGD technology was applied, we show that the case with dilation start-up uses a shorter period to complete the steam circulation when compared to that from a conventional SAGD.
Role of Geomechanics in Petroleum Production in Xinjiang Oil Field, China
Xinjiang oil field is at the heart of the Belt and Road Initiative (BRI), and special technologies like hydraulic fracturing treatments and thermally enhanced oil recovery technology were applied for unconventional petroleum productions in the Xinjiang oil field. Geomechanics is particularly important in the petroleum productions in these unconventional reservoirs. Key points include the determination of 3D in-situ stress, laboratory characterization of poromechanical properties of reservoir rocks, and thermal-hydro-mechanical coupled modeling on the dilation yield process and induced permeability enhancement. We use cases from two sites to demonstrate the effectiveness of using geomechanical dilation to promote petroleum productions in tight oil and oil sands reservoirs, respectively. For the case of a tight oil reservoir, where hydraulic fracturing was applied, the result indicates that rock dilation, if proactively utilized, can enhance the fluid deliverability from the reservoir into the main hydraulic fracture. For the case of heavy oil reservoir where the SAGD technology was applied, we show that the case with dilation start-up uses a shorter period to complete the steam circulation when compared to that from a conventional SAGD.
Role of Geomechanics in Petroleum Production in Xinjiang Oil Field, China
Lecture Notes in Civil Engineering
Zhu, Hong-Hu (editor) / Garg, Ankit (editor) / Zhussupbekov, Askar (editor) / Su, Li-Jun (editor) / Li, Biao (author) / Xu, Bin (author) / Yang, Baohong (author)
Belt and Road Webinar Series on Geotechnics, Energy and Environment ; 2021
2022-02-16
10 pages
Article/Chapter (Book)
Electronic Resource
English
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