摘要
盐穴储气库采用水溶采矿方式建造,需要根据盐腔有效体积定期进行声呐测腔和管柱调整。为此,提出一种盐穴储气库盐腔有效体积计算方法,包括排卤浓度测定方法和有效体积计算数学模型:利用银量法测定排卤浓度,计算采盐体积;再根据盐腔体积守恒原理推导出盐腔有效体积、盐层总动用体积以及膨胀后不溶物体积计算公式。将新方法应用于金坛A盐腔进行验算,结果表明:排卤浓度约300 g/L,接近饱和,平均造腔速度230 m^(3)/d,成腔率为79%,接近金坛盐穴储气库群平均水平。该方法计算准确度高,可以满足现场应用要求,能够有效指导造腔现场施工作业。
Salt cavern gas storage is constructed by solution mining,and it is necessary to conduct regular sonar survey and string adjustment according to the effective volume of the salt cavity.For this purpose,a calculation method for the effective cavity volume of salt cavern gas storage was proposed,including the determination method of brine discharge concentration and the mathematical model for calculation of the effective volume.The argentometry was used to determine the brine discharge concentration,with which the volume of salt mined could be calculated.Then,the formulas for calculating the effective cavity volume,the total volume of salt bed used and the volume of the expanded insoluble could be derived by following the conservation principle of salt cavity volume.Finally,check calculation was performed for the formulas with Cavity A of Jintan Gas Storage as the example.According to the results,the brine discharge concentration is about 300 g/L,close to saturation,the average mining speed is 230 m^(3)/d,and the cavern forming rate is 79%,which approaches the average level of Jintan Gas Storage group.Conclusively,this method with high calculation accuracy can satisfy the requirements of field application and can be used to effectively guide the site operations.
作者
王建夫
王娜
许开志
夏敬亮
WANG Jianfu;WANG Na;XU Kaizhi;XIA Jingliang(PetroChina Gas Storage Company;No.5 Oil Production Plant,PetroChina Huabei Oilfield Company;Huabei Petroleum Administration Jiangsu Gas Storage Company)
出处
《油气储运》
CAS
北大核心
2021年第8期909-913,共5页
Oil & Gas Storage and Transportation
基金
中国石油天然气集团有限公司科技攻关项目“盐穴储气库双井造腔关键技术研究”,2019B-3205。
关键词
盐穴储气库
数学模型
排卤浓度
有效体积
不溶物堆积体积
salt cavern gas storage
mathematical model
brine discharge concentration
effective volume
bulk volume of insoluble
作者简介
王建夫,男,1989年生,助理工程师,2017年硕士毕业于中国石油大学(北京)油气田开发专业,现主要从事盐穴储气库造腔设计工作。地址:江苏省镇江市润州区南徐大道60号商务A区D座0513室,212000。电话:18531721971。Email:wjf_jscqk@petrochina.com.cn。
