TCP+APR联作射孔负压值设计及校正方法  

Design and correction of negative pressure value in TCP+APR testing

作　　者：林炳南 赵洪涛 徐杨 林晓璋 LIN Bingnan;ZHAO Hongtao;XU Yang;LIN Xiaozhang(China France Bohai Geoservices Co.,Ltd.,Tianjin 300457,China)

机构地区：[1]中法渤海地质服务有限公司,天津300457

出　　处：《油气井测试》2022年第5期28-32,共5页Well Testing

基　　金：国家科技重大专项“南海东部海域勘探新领域及关键技术”(2016ZX05024-004)。

摘　　要：为有效捕捉TCP+APR联作测试中射孔井段附近井筒的射孔瞬时压力、温度、管柱震击等数据,采用在射孔枪的底部安装超高速采点压力计施工工艺。通过分析射孔瞬时压力数据、测前负压设计、射孔枪及射孔弹等参数,进行实际负压值与设计负压值的对比;进一步构建枪身体积/泄压面积的复合影响参数,建立该参数与压力差值的关系式,进行负压设计值的校正。分析表明,负压射孔实际负压值较设计值大,且二者差值的大小受射孔枪枪身体积、泄压面积等因素影响;负压大小与射孔枪泄压面积呈负相关,而与枪身体积成正相关。射孔压力计数据的应用有助于完善负压值设计,校正实际射孔负压值,优化射孔参数和测试管柱设计。In order to effectively capture the data(e.g.instantaneous perforating pressure,temperature and string shock)of the wellbore near the perforated interval in TCP+APR testing,an ultra-high-speed pressure sampling gauge is installed at the bottom of perforating gun.By analyzing the data of instantaneous perforating pressure,pre-testing negative pressure design,and the parameters of perforating gun and perforating charges,the actual negative pressure value and the designed negative pressure value were compared.An influencing parameter of gun volume/pressure relief area was constructed,and then the relational expression between this parameter and pressure difference was established for correction of the designed negative pressure value.It is found that the actual negative pressure value is larger than the designed value,and the difference between the two is affected by the volume and pressure relief area of the perforating gun,and other factors.The negative pressure is negatively correlated with the pressure relief area of the perforating gun,and positively correlated with the volume of the perforating gun.The application of the data from perforating pressure gauge helps to improve the design of negative pressure value,correct the actual negative pressure value,and optimize perforation parameters and test string design.

关 键 词：射孔压力计 TCP+APR联作 地层测试 负压射孔 负压设计 负压校正 射孔参数优化 相关性分析 

分 类 号：TE27[石油与天然气工程—油气井工程]