2016
DOI: 10.2118/183630-pa
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A Multistage Theoretical Model To Characterize the Liquid Level During Steam-Assisted-Gravity-Drainage Process

Abstract: Summary The technology of steam-assisted gravity drainage (SAGD) with a dual horizontal well pair has been widely adopted in thermal recovery for heavy oil in recent years. However, the close distance between injector and producer makes it easy to cause steam breakthrough, which means lower thermal efficiency as well as higher investment. It is generally acknowledged that there is a vapor-liquid interface between the injector and producer. A suitable liquid level is desired to prevent steam from… Show more

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Cited by 25 publications
(7 citation statements)
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“…The reasons behind are that first ANN can analyze a bunch of data to uncover the hidden pattern and relationships [45]. Second, EOR methods are widely used in unconventional reservoirs to improve oil recovery [2,5,[46][47][48][49][50][51][52], changing their work conditions frequently and leading to a more complicated well production performance. TSA is a good method to handle this issue because the stock markets have used this technique to predict the stock price for a long time [53].…”
Section: Geofluidsmentioning
confidence: 99%
“…The reasons behind are that first ANN can analyze a bunch of data to uncover the hidden pattern and relationships [45]. Second, EOR methods are widely used in unconventional reservoirs to improve oil recovery [2,5,[46][47][48][49][50][51][52], changing their work conditions frequently and leading to a more complicated well production performance. TSA is a good method to handle this issue because the stock markets have used this technique to predict the stock price for a long time [53].…”
Section: Geofluidsmentioning
confidence: 99%
“…The stable interlayer can divide the thick reservoir into several relatively independent flow units. At present, injection steam for thermal recovery is the main way to improve oil recovery in heavy oil reservoirs (Wang et al, 2006;Zhu et al, 2011;Liu et al, 2012;Ajay, 2012;Huang et al, 2013;Khansari et al, 2014;Liu, 2015;Liu et al, 2015;Sheikholeslami et al, 2016;Hou et al, 2016;Yang et al, 2016;Ma and Liu, 2018;Zhong et al, 2015;Xiong et al, 2017). Interlayer affects fluid seepage by affecting the development and expansion of steam chamber (Zhou et al, 2006;Wang et al, 2009), which has a vital impact on the thermal effect of thick heavy oil reservoirs.…”
Section: Introductionmentioning
confidence: 99%
“…Many processes of exploiting heavy oil have been developed and improved, such as water flooding, chemical flooding, thermal recovery, and microbial recovery (Sheikholeslami et al, 2016). Among a variety of enhanced oil recovery technologies, the thermal recovery technology has been widely used for heavy oil reservoirs (Khansari et al, 2014;Hou et al, 2016a, b), such as steam assisted gravity drainage(SAGD) (Yang et al, 2016), steam flooding (SF) (Zhao et al, 2013;Mahood et al, 2016) and cyclic steam stimulation (CSS) (Hou and Chen, 1997;Escobar et al, 2000;Bao et al, 2016), cyclic multi-thermal fluids stimulation (Hou et al, 2016c;Kuigian, 2018;Liu et al, 2018;Dong et al, 2014a, b;Dong et al, 2016). Nowadays, CSS and SF are known as the most widely used and mature technologies (Dong et al, 2012).…”
Section: Introductionmentioning
confidence: 99%