Experiment on effective capacity of gas storage reconstructed from Baogu-2 Reservoir

doi:10.3969/j.issn.1006-6535.2025.01.015

Abstract

Abstract: The capacity constitutes one of the most crucial indicators for the reconstruction of gas storage.The greater the capacity of the gas storage,the stronger the capabilities of carrying,gas storage and peak shaving,and the greater the ability to guarantee the demand for gas.Therefore,forecasting the capacity holds significant importance for the construction of gas storage.In order to clarify the effective capacity of the gas storage reconstructed from the Baogu-2 Reservoir,a multi-period interactive displacement relative permeability experiment and a long core injection-production experiment were conducted.The experimental results indicate that after 5 cycles of oil-water mutual displacement,the capacity decreases by 7.71 percentage points.After gas-water mutual displacement and gas-oil mutual displacement,the capacity increases by 1.50 and 3.14 percentage points respectively.After 5 cycles of injection-production experiments,the reservoir capacity space increased by 32.38 percentage points.Multi-cycle injection and production can continuously mobilize the internal fluid of the core to enhance the capacity.Effective measures ought to be adopted to prevent edge and bottom water from intruding oil areas,minimize oil-water mutual drive,and improve the effective displacement of injected gas to pure oil areas and water-flooded areas,so as to realize efficient storage construction in mutual drive areas.Reasonable design of injection-production plan can further improve the effective capacity of gas storage.This study can offer technical support for the reconstruction of gas storage in edge and bottom water reservoirs.

Key words: gas storage, the law of relative permeability, injection-production experiment, capacity, Baogu-2 Reservoir

CLC Number:

TE822

HE Haiyan, XIN Chunyan, SHANG Lin, ZHU Shijie, XIANG Zuping, GAO Guangliang, SUN Yanchun, WANG Yi. Experiment on effective capacity of gas storage reconstructed from Baogu-2 Reservoir[J]. Special Oil & Gas Reservoirs, 2025, 32(1): 127-134.

References

[1] 李建君.中国地下储气库发展现状及展望[J].油气储运,2022,41(7):780-786.
LI Jianjun.The development status and prospect of underground gas storage in China[J].Oil and Gas Storage and Transportation,2022,41(7):780-786.
[2] 张刚雄,李彬,郑得文,等.中国地下储气库业务面临的挑战及对策建议[J].天然气工业,2017,37(1):153-159.
ZHANG Gangxiong,LI Bin,ZHENG Dewen,et al.Challenges to and proposals for underground gas storage(UGS) business in China[J].Natural Gas Industry,2017,37(1):153-159.
[3] 刘建勋,刘岩.中国地下储气库建设的发展现状及展望[J].应用化工,2022,51(4):1136-1140,1145.
LIU Jianxun,LIU Yan.Development status and prospects of China′s underground gas storage construction [J].Applied Chemical Industry,2022,51(4):1136-1140,1145.
[4] 马新华,郑得文,魏国齐,等.中国天然气地下储气库重大科学理论技术发展方向[J].天然气工业,2022,42(5):93-99.
MA Xinhua,ZHENG Dewen,WEI Guoqi,et al.Development directions of major scientific theories and technologies for underground gas storage[J].Natural Gas Industry,2022,42(5):93-99.
[5] 马新华,张国生,唐红君,等.天然气在构建清洁低碳能源体系中的地位与作用[J].石油科技论坛,2022,41(1):18-28.
MA Xinhua,ZHANG Guosheng,Tang Hongjun,et al.Natural gas position and role in construction of clean low-carbon energy system[J].Petroleum Science And Technology Forum,2022,41(1):18-28.
[6] 何海燕,刘先山,耿少阳,等.基于渗流-温度双场耦合的油藏型储气库数值模拟[J].油气藏评价与开发,2023,13(6):819-826.
HE Haiyan,LIU Xianshan,GENG Shaoyang,et al.Numerical simulation of UGS facilities rebuilt from oil reservoirs based on the coupling of seepage and temperature fields[J].Petroleum Reservoir Evaluation and Development,2023,13(6):819-826.
[7] 焦霞蓉,江山,刘洪,等.长春油田X断块气顶油藏型储气库注气能力评价[J].长江大学学报(自然科学版),2022,19(6):78-84.
JIAO Xiarong,JIANG Shan,LIU Hong,et al.Evaluation of gas injection capacity of gas cap reservoir type gas storage in X fault block of Changchun Oilfield[J].Journal of Yangtze University(Natural Science Edition),2022,19(6):78-84.
[8] 殷富国,程时清,黄兰,等.气驱协同型储气库建库不同阶段产能预测[J].新疆石油地质,2022,43(5):600-605.
YIN Fuguo,CHENG Shiqing,HUANG Lan,et al.Productivity prediction in different stages of collaborative construction of underground gas storage and gas flooding[J].Xinjiang Petroleum Geology,2022,43(5):600-605.
[9] 江同文,王正茂,王锦芳.天然气顶部重力驱油储气一体化建库技术[J].石油勘探与开发,2021,48(5):1061-1068.
JIANG Tongwen,WANG Zhengmao,WANG Jinfang.Integrated construction technology for natural gas gravity drive and underground gas storage[J].Petroleum Exploration and Development,2021,48(5):1061-1068.
[10] 马震.S6气顶油藏型储气库多周期注采流体相态特征研究[D].成都:西南石油大学,2019.
MA Zhen.Study on phase characteristics of multi-cycle injection-production fluid in S6 gas cap reservoir gas storage[D].Chengdu:Southwest Petroleum University,2019.
[11] 熊钰,徐宏光,李辉,等.废弃油藏建储气库库容变化机理室内实验研究[J].科学技术与工程,2015,15(6):173-176.
XIONG Yu,XU Hongguang,LI Hui,et al.A research on the change mechanism of storage capacity of abandoned oil reservoirs to build gas storage space through indoor test[J].Science and Technology and Engineering,2015,15(6):173-176.
[12] GAO Guangliang,LIU Wei,ZHU shijie,et al.Discussion on the reconstruction of medium/low-permeability gas reservoirs based on seepage characteristics[J].Processes,2022,10(4):756.
[13] 刘涛,李宜强,丁国生,等.气藏型储气库空间动用规律及扩容机理仿真模拟[J].石油勘探与开发,2022,49(6):1227-1233.
LIU Tao,LI Yiqiang,DING Guosheng,et al.Simulation of pore space production law and capacity expansion mechanism of underground gas storage[J].Petroleum Exploration and Development,2022,49(6):1227-1233.
[14] 高广亮,刘伟,李聪,等.油藏改建地下储气库库容量计算方法[J].天然气工业,2023,43(10):132-140.
GAO Guangliang,LIU Wei,LI Cong,et al.A calculation method for the storage capacity of UGS rebuilt from oil reservoirs[J].Natural Gas Industry,2023,43(10):132-140.
[15] 闫萍,靳叶军,袁雪花,等.储气库运行上限压力的确定方法及在板中北储气库的应用[J].特种油气藏,2024,31(4):81-88.
YAN Ping,JIN Yejun,YUAN Xuehua,et al.Method of determining the upper limit pressure of gas storage operation and its application in the Banzhongbei gas storage[J].Special Oil & Gas Reservoirs,2024,31(4):81-88.
[16] 陈显学.底水气藏型储气库注采渗流规律实验[J].特种油气藏,2022,29(4):101-106.
CHEN Xianxue.Test on the seepage pattern in injection and production of gas storage in bottom-water gas reservoir[J].Special Oil & Gas Reservoirs,2022,29(4):101-106.
[17] 王皆明,姜凤光.砂岩气顶油藏改建储气库库容计算方法[J].天然气工业,2007,27(11): 97-99.
WANG Jieming,JIANG Fengguang.A method for calculating underground gas storage capacity reconstructed from sand gas-cap reservoir at the late water-driving stage[J].Natural Gas Industry,2007,27(11):97-99.
[18] 高广亮,马立民,吴远坤,等.南堡凹陷堡古2区块砂质碎屑流油藏地质特征[J].断块油气田,2018,25(1):11-15.
GAO Guangliang,MA Limin,WU Yuankun,et al.Geological characteristics of sandy debris flow reservoir in PG-2 Block of Nanpu Sag[J].Fault-Block Oil & Gas Field,2018,25(1):11-15.
[19] 刘晓丽,李阳,白雷,等.薄层砂岩边底水油藏空气辅助内源微生物驱油技术[J].特种油气藏,2024,31(2):103-111.
LIU Xiaoli,LI Yang,BAI Lei,et al.Air-assisted microbial enhanced oil displacement in thin sandstone reservoir with edge and bottom water[J].Special Oil & Gas Reservoirs,2024,31(2):103-111.
[20] 蔡建钦,李涛,王小剑,等.考虑水侵量时变的边底水油藏平均地层压力预测新方法[J].钻采工艺,2023, 46 (2): 89-93.
CAI Jianqin,LI Tao,WANG Xiaojian,et al.A new method to predict average reservoir pressure for oil reservoir subject to edge or bottom water drive considering time-varying water influx[J].Drilling & Production Technology,2023,46(2):89-93.
[21] 范宇,高新平,宁飞,等.基于多周期注采的气藏型地下储气库储层渗流规律[J].天然气工业,2023,43(10):103-111.
FAN Yu,GAO Xinping,NING Fei,et al.Seepage law of gas-reservoir UGSs during multi-cycle injection and production[J].Natural Gas Industry,2023,43(10):103-111.
[22] 罗波波,刘峰刚,王瑞飞,等.挥发性致密油藏孔隙结构及高温高压三相相渗实验[J].石油地质与工程,2023,37(3):69-75.
LUO Bobo,LIU Fenggang,WANG Ruifei,et al.Experimental study on pore structure and high-temperature and high-pressure three-phase relative permeability of volatile tight oil reservoirs[J].Petroleum Geology and Engineering,2023,37(3):69-75.
[23] 雷霄,查玉强,姜平,等.一种改进的油水相渗实验末端效应校正方法[J].中国海上油气,2016,28(5):49-53.
LEI Xiao,ZHA Yuqiang,JIANG Ping,et al.An improved correction method for end-effect in oil-water relative permeability experiment[J].China Offshore Oil and Gas,2016,28(5):49-53.
[24] 朱诗杰,施雷庭,张健,等.相渗曲线判断聚合物驱转注聚时机的应用方法[J].油气藏评价与开发,2020,10(2):128-134.
ZHU Shijie,SHI Leiting,ZHANG Jian,et al.Application method of determining polymer injection timing with relative permeability curves[J].Petroleum Reservoir Evaluation and Development,2020,10(2):128-134.
[25] 张晶晨,王秀宇,王凤鸣.渗透率及压力梯度对特低渗储层油水相渗曲线的影响[J].西安石油大学学报(自然科学版),2022,37(1):87-92.
ZHANG Jingchen,WANG Xiuyu,WANG Fengming.Influence of rock permeability and pressure gradient on relative permeability curves of oil and water in extra-low permeability reservoir[J].Journal of Xi′an Shiyou University(Natural Science Edition),2022,37(1):87-92.
[26] 李春雷,曹小朋,张林凤,等.基于机器学习算法的水驱储层相渗曲线仿真预测[J].油气地质与采收率,2022,29(6):138-142.
LI Chunlei,CAO Xiaopeng,ZHANG Linfeng.et al.Simulation and prediction of water-flooding reservoir relative permeability curve based on machine learning[J].Petroleum Geology and Recovery Efficiency,2022,29(6):138-142.