Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/09181817131 |
Re-evaluation of the porosity measurements under different confining pressures: A better appraisal of reservoir porosity | |
Pan, Lin1,2; Jones, Stuart J.3; Wang, Xiao1,2; Guan, Wen4; Li, Longlong2 | |
2019-03-01 | |
发表期刊 | AAPG BULLETIN |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2019 |
卷号 | 103期号:3页码:515-526 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England |
英文摘要 | Porosity is one of the most important rock properties in describing hydrocarbon reservoirs. Tests on core samples provide direct and representative porosity data, and the measurement of porosity at high confining pressures is recognized to correlate well with subsurface reservoir porosity. Whereas theoretical deductions of the changes and relationships of pressures, volumes, and compressibility suggest that porosity is reduced during the coring and lifting processes, the porosity measurement at elevated confining pressure does not evaluate original reservoir porosity. This theory is quantitatively validated by repeated laboratory experiments of loading and unloading on sandstone core samples. When the in situ confining pressure is approximately 30-35 MPa (similar to 4350-5076 psi), coring and lifting would cause a porosity reduction of approximately 1.2%-1.6%, and the porosity test under high confining stress results in further porosity loss. A revised approach in calculating reservoir porosity from cored samples is proposed and can have significant implications for reserve calculations, recovery factors, and geostatistical reservoir models. The study is important for both conventional and unconventional reservoirs because it discusses a fundamental mechanism of porosity change. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459337700001 |
WOS关键词 | CORE ANALYSIS ; BEHAVIOR ; COMPRESSIBILITY ; PREDICTION ; STRESS ; CEMENT ; ROCKS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24474 |
专题 | 地球科学 |
作者单位 | 1.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan, Hubei, Peoples R China; 2.China Univ Geosci, Dept Petr Engn, Wuhan, Hubei, Peoples R China; 3.Univ Durham, Dept Earth Sci, Durham, England; 4.Huabei Oilfield Co, Sinopec, Zhengzhou, Henan, Peoples R China |
推荐引用方式 GB/T 7714 | Pan, Lin,Jones, Stuart J.,Wang, Xiao,et al. Re-evaluation of the porosity measurements under different confining pressures: A better appraisal of reservoir porosity[J]. AAPG BULLETIN,2019,103(3):515-526. |
APA | Pan, Lin,Jones, Stuart J.,Wang, Xiao,Guan, Wen,&Li, Longlong.(2019).Re-evaluation of the porosity measurements under different confining pressures: A better appraisal of reservoir porosity.AAPG BULLETIN,103(3),515-526. |
MLA | Pan, Lin,et al."Re-evaluation of the porosity measurements under different confining pressures: A better appraisal of reservoir porosity".AAPG BULLETIN 103.3(2019):515-526. |
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