| Exploring the role of the structural heterogeneity of fractured carbonate reservoirs in contact with dissolved CO2 based on fracture water rock simulation experiments | |
Ding, Qian1,2; Wang, Jingbin1,2; Yang, Leilei3,4; Zhu, Dongya1,2; Jiang WB(江文滨) ; He, Zhiliang2,7
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| Source Publication | APPLIED GEOCHEMISTRY
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| 2023-03 | |
| Volume | 150Pages:105589 |
| ISSN | 0883-2927 |
| Abstract | Based on the geological background of ultra deep fractured carbonate reservoirs in the Shunbei oil and gas field, the objective of this study was to clarify the interactions between fractured carbonate reservoirs and formation fluids (brine with dissolved CO2) under deep strata, and the potential impact of these interactions on reservoirs. In this study, high temperature and high pressure simulation experiments and numerical simulations based on the Yijianfang Formation in the Shunbei area were designed to investigate the influence of temperature, pressure, fluid, and structural heterogeneity on fluid transport and mass transfer, calculate the ion diffusion characteristics and the trend of mineral dissolution/precipitation along the fractures, and clarify the change in the reservoir space. The results indicated that the volume of the main fracture increased after the reaction between an acidic solution and a formation sample, the permeability of the sample increased by orders of magnitude, and its porosity increased accordingly. The overall reaction during the experimental period was dominated by the dissolution of calcium carbonate, and no calcium carbonate precipitated. The structural heterogeneity and hy draulic properties of the sample make the main flow channel a main fracture. The flow and reaction processes in the flow channel promoted each other. The effects of temperature and pressure on the overall reservoir space were insignificant. Branch fractures or microfractures can weaken the main fluid flow rate and tend to result in the accumulation of solutes, the ends of which may be potential locations for mineral precipitation. Therefore, the priority exploration location for deep and ultra deep fractured reservoirs should be the main fractures up stream of the fluid flow. |
| Keyword | Brine with dissolvedCO2 Dissolution pattern Structural heterogeneity Fractured limestone Tarim basin |
| DOI | 10.1016/j.apgeochem.2023.105589 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000946418700001 |
| WOS Research Area | Geochemistry & Geophysics |
| WOS Subject | Geochemistry & Geophysics |
| Funding Organization | National Natural Science Foundation of China [42072177, U19B6003, 42141011] ; Strategic Priority Research Program of the Chinese Academy of Sciences ; SINOPEC ; [XDA14010201] ; [P22207 1] |
| Classification | 二类 |
| Ranking | 3+ |
| Contributor | He, ZL (corresponding author), State Key Lab Shale Oil & Gas Accumulat Mech & Eff, Beijing 102206, Peoples R China. ; He, ZL (corresponding author), China Petr & Chem Corp, Beijing 100728, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/91838 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.State Key Lab Shale Oil & Gas Accumulat Mech & Eff, Beijing 102206, Peoples R China 2.SINOPEC, Petr Explorat & Prod Res Inst, Beijing 102206, Peoples R China 3.SINOPEC, Key Lab Geol & Resource Deep Stratum, Beijing 102206, Peoples R China 4.State Key Lab Petr Resource & Prospecting, Beijing 102249, Peoples R China 5.China Univ Petr, Beijing 102249, Peoples R China 6.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 7.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China 8.China Petr & Chem Corp, Beijing 100728, Peoples R China |
| Recommended Citation GB/T 7714 | Ding, Qian,Wang, Jingbin,Yang, Leilei,et al. Exploring the role of the structural heterogeneity of fractured carbonate reservoirs in contact with dissolved CO2 based on fracture water rock simulation experiments[J]. APPLIED GEOCHEMISTRY,2023,150:105589.Rp_Au:He, ZL (corresponding author), State Key Lab Shale Oil & Gas Accumulat Mech & Eff, Beijing 102206, Peoples R China., He, ZL (corresponding author), China Petr & Chem Corp, Beijing 100728, Peoples R China. |
| APA | Ding, Qian,Wang, Jingbin,Yang, Leilei,Zhu, Dongya,江文滨,&He, Zhiliang.(2023).Exploring the role of the structural heterogeneity of fractured carbonate reservoirs in contact with dissolved CO2 based on fracture water rock simulation experiments.APPLIED GEOCHEMISTRY,150,105589. |
| MLA | Ding, Qian,et al."Exploring the role of the structural heterogeneity of fractured carbonate reservoirs in contact with dissolved CO2 based on fracture water rock simulation experiments".APPLIED GEOCHEMISTRY 150(2023):105589. |
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| Jp2023Fa035.pdf（7449KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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