[1]梁正中,许红涛,常利娜.鄂尔多斯盆缘PY地区长8段流体饱和度特征及校正研究[J].复杂油气藏,2023,16(02):179-184.[doi:10.16181/j.cnki.fzyqc.2023.02.010]
 LIANG Zhengzhong,XU Hongtao,CHANG Lina.Fluid saturation characteristics and correction for Chang 8 reservoir of Yanchang Formation in the PY area,the southwestern margin of Ordos Basin[J].Complex Hydrocarbon Reservoirs,2023,16(02):179-184.[doi:10.16181/j.cnki.fzyqc.2023.02.010]
点击复制

鄂尔多斯盆缘PY地区长8段流体饱和度特征及校正研究()
分享到:

《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
16卷
期数:
2023年02期
页码:
179-184
栏目:
油气勘探
出版日期:
2023-06-25

文章信息/Info

Title:
Fluid saturation characteristics and correction for Chang 8 reservoir of Yanchang Formation in the PY area,the southwestern margin of Ordos Basin
作者:
梁正中1许红涛2常利娜1
1.榆林学院化学与化工学院,陕西 榆林 719000;2.西安石油大学石油工程学院,陕西 西安 710065
Author(s):
LIANG Zhengzhong1XU Hongtao2CHANG Lina1
1. College of Chemistry Engineering,Yulin University,Yulin 719000,China;2. School of Petroleum Engineering,Xi’an Shiyou University,Xi’an 710065,China
关键词:
流体饱和度校正模型欠充注长8段鄂尔多斯盆地
Keywords:
fluid saturationcorrection modelunder saturated fillingChang 8 reservoirOrdos Basin
分类号:
TE122
DOI:
10.16181/j.cnki.fzyqc.2023.02.010
文献标志码:
A
摘要:
致密砂岩油藏是当前非常规油气勘探中的最现实领域之一。鄂尔多斯盆地西南缘PY地区长8段主力油层非均质强、含油性差异大,相关流体饱和度参数测试分析与对比校正极为重要。通过地面测量的含油饱和度一般小于30%,常存在流体饱和度损失而和地下储层真实值之间存在较大差距,为此本文采用数理统计方法建立了该区流体饱和度校正模型。结果表明,校正之后的长8含油饱和度参数提高15%以上,更加吻合测录井显示及试油对比结果。但PY地区整体含油饱和度仍显著低于湖盆内部,其原因在于供烃成藏条件相对不利造成本区欠充注型油藏发育。由于储层物性相对较好导致可动油饱和度略高,从而出现含油显示虽差而出油尚可的情况,提出应在流体饱和度校正基础上进一步开展可动油评价。
Abstract:
The tight sandstone reservoirs are one of the most realistic areas in current unconventional oil and gas exploration. In the PY area of the southwest margin of the Ordos Basin,the main oil reservoir in the Chang 8 section has strong reservoir heterogeneity and large oil-bearing differences,so the relevant fluid saturation parameters are extremely important for test analysis and comparative calibration. The oil saturation of the PY reservoir measured in the laboratory is generally less than 30%,and there is often a large difference between the fluid saturation loss and the real value of the subsurface reservoir. Therefore,a correction model of fluid saturation in this region was established by using mathematical and statistical methods. The results show that the corrected oil saturation of the Chang 8 reservoir is improved by more than 15%,which is more consistent with the results of logging data and oil testing comparison. However,the overall oil saturation in the PY area is still significantly lower than that in the interior of the lake basin,which is due to the relatively unfavorable hydrocarbon supplying reservoir formation conditions causing the development of underfilled reservoirs in this area. Due to the relatively better reservoir physical properties,the mobile oil saturation is slightly higher,resulting in a situation where the oil-bearing indication is poor but oil production is still feasible,and it is proposed that further mobile oil evaluation should be carried out based on fluid saturation correction.

参考文献/References:

[1] 朱如凯,邹才能,吴松涛,等. 中国陆相致密油形成机理与富集规律[J]. 石油与天然气地质,2019,40(6):1168-1183.
[2] 闫林,冉启全,高阳,等. 陆相致密油藏差异化含油特征与控制因素[J]. 西南石油大学学报(自然科学版),2017,39(6):45-54.
[3] 王香增,任来义,贺永红. 鄂尔多斯盆地致密油的定义[J]. 油气地质与采收率,2016,23(1):1-7.
[4] 谭锋奇,杨长春,李洪奇,等.密闭取心井油水饱和度校正方法[J]. 地球科学(中国地质大学学报),2013,38(3):592-598.
[5] 刘丽. 基于物理模拟实验的密闭取心井油水饱和度校正[J]. 石油钻采工艺,2009,31(2):82-85,90.
[6] 张亮. 密闭取心井岩心饱和度校正物理模拟实验[J]. 油气地质与采收率,2009,16(2):94-95,98.
[7] 杨胜来,胡学军,李辉. 密闭取心流体饱和度误差的影响因素及修正方法[J]. 石油大学学报(自然科学版),2004,28(6):64-67.
[8] 芦凤明,马文华,白晶,等.大港油田储层岩心饱和度校正方法优选[J].长江大学学报 (自然科学版),2019,16 (12):50-53.
[9] 杨华,李士祥,刘显阳. 鄂尔多斯盆地致密油、页岩油特征及资源潜力[J]. 石油学报,2013,34(1):1-11.
[10] 石玉江,李高仁,周金昱,等.鄂尔多斯盆地中生界延长组低渗透致密油藏充注模式测井识别[J]. 测井技术,2016,40(2):202-208.
[11] 郭凯,曾溅辉,刘涛涛. 鄂尔多斯盆地延长组石油充注动力的包裹体热动力学模拟[J]. 地质科技情报,2015,34(2):152-158.
[12] 邓秀芹,刘新社,李士祥. 鄂尔多斯盆地三叠系延长组超低渗透储层致密史与油藏成藏史[J]. 石油与天然气地质,2009,30(2):156-161.
[13] 池云刚.吴定地区延长组储层流体饱和度校正模型及应用[D].西安:西安石油大学,2018.
[14] 王飞龙.低渗油田可动油储集层流体性质评价方法—以鄂尔多斯盆地红河油田为例[J].录井工程,2019,30(4):74-78.
[15] 喻建,杨孝,李斌,等. 致密油储层可动流体饱和度计算方法—以合水地区长7致密油储层为例[J]. 石油实验地质,2014,36(6):767-772,779.

备注/Memo

备注/Memo:
收稿日期:2022-07-21;
改回日期:2023-01-06。
第一作者简介:梁正中(1978—),副教授,现主要从事非常规油气综合地质研究。
E-mail:lzzdatong@sina.com。
基金项目:陕西省科学技术厅重点研发计划(2020SF-369),榆林市科技局项目(CXY-2022-73)。
更新日期/Last Update: 2023-06-25