Geological “sweet spots” log evaluation of conglomerate tight reservoir of Baikouquan formation in Fengnan 4 play, Mahu Sag, Junggar Basin

被引：0

作者：

Jiao C. ^{[1
]}

Wang M. ^{[1
]}

Gao Y. ^{[2
,3
]}

Huang W. ^{[1
]}

Lu S. ^{[1
]}

Guan Y. ^{[1
]}

Qian G. ^{[3
]}

Qin J. ^{[2
,3
]}

Zhou N. ^{[1
]}

Tian W. ^{[1
]}

Wang Z. ^{[1
]}

Xu J. ^{[1
]}

机构：

[1] School of Geosciences and Technology, China University of Petroleum(East China), Qingdao

[2] Research Institute of Petroleum Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay

[3] Xinjiang Oilfield Company, PetroChina, Karamay

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Conglomerate tight reservoir; Geological “sweet spot; Log evaluation; Mahu Sag; Oil-bearing heterogeneity;

D O I：

10.11817/j.issn.1672-7207.2020.01.014

中图分类号：

学科分类号：

摘要：

In order to effectively evaluate the distribution of “sweet spots” in conglomerate tight reservoirs, the problems of high heterogeneity of conglomerate tight reservoirs, complex oil and water distribution, and difficulty in identifying “sweet spots” were dealt with. The porosity and oil saturation of conglomerate tight samples in Fengnan 4 play were recovered under formation conditions. Combined with the Archie formula and the dynamic formation water resistivity evaluation model, the porosity and oil saturation log evaluation models were established. On this basis, by constructing oil-bearing porosity parameters, the vertical oil-bearing heterogeneity of single wells were characterized, and the geological “sweet spots” of conglomerate tight reservoirs were evaluated. The results show that the porosity decreases by about 12.5% and the oil saturation increases by about 9.3% compared to the laboratory test results under surface conditions. The “sweet spots” of conglomerate reservoirs lie in T1b2 1 and T1b3 of the Baikouquan Formation in Fengnan 4 play, mainly developing type II “sweet spots”, followed by type I “sweet spots”. The identification and prediction of geological “sweet spots” in the study area provide references for well location deployment and horizontal well trajectory optimization of conglomerate tight reservoirs in the Mahu area. © 2020, Central South University Press. All right reserved.

引用

页码：112 / 125

页数：13

共 42 条

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