摘要
川南地区的页岩气水平井的套管变形严重,影响分簇射孔管串的泵送作业时效和安全,成为制约页岩气高效开发的“卡脖子”因素。针对短期内无法完全消除套管变形的现状,分析套管变形后的主要形态与尺寸,介绍了利用CCL信号曲线与井口电缆张力变化快速判别套管变形井中泵送遇阻、遇卡的方法。对比研究了常规分簇射孔管串与小外径分簇射孔管串在不同井斜角的水平井段内的泵送参数匹配关系,当小外径分簇射孔管串的桥塞直径为Φ85~88 mm、泵送设计排量为3.0~3.2 m^(3)/min、泵送设计速度为2500~3000 m/h时,可有效确保变形139.7 mm(5 1/2英寸)套管内泵送作业的安全性及时效性。
The casing deformation of shale gas horizontal wells in South Sichuan is serious,which affects the efficiency and safety of plug and perforating operation and becomes a“bottleneck”factor restricting the efficient development of shale gas.According to the present situation that the casing deformation can not be eliminated in the short term,the main shape and size of the deformed casing were analyzed and summarized,and the method of quickly judging the pumping block and pumping stuck caused by the deformed casing with the CCL signal curve and the change of the surface wireline tension was put forward.By comparing and studying the variation of pumping parameters between conventional perforating string and unconventional perforating string with mall diameter in different inclined horizontal well sections,it is proposed that when the unconventional perforating string withΦ85-Φ88 mm plug is pumping down at a design displacement of 3.0~3.2 m^(3)/min and at a design speed of 2500~3000 m/h,its efficiency and safety can be effectively ensured in the 51/2"deformed casing.
作者
肖勇军
宋毅
陆应辉
蒋佳玉
唐勇
马自强
许嘉乐
聂华富
XIAO Yongjun;SONG Yi;LU Yinghui;JIANG Jiayu;TANG Yong;MA Ziqiang;XU Jiale;NIE Huafu(Sichuan Changning Natural Gas Development Co., Ltd., Chengdu 610051, China;Shale Gas Research Institute, PetroChina Southwest Oil & Gas Field Company, Chengdu 610051, China;Southwest Branch,China Petroleum Logging Co.,Ltd.,Chongqing 400021, China)
出处
《石油矿场机械》
CAS
2021年第5期66-72,共7页
Oil Field Equipment
基金
中国石油集团重大工程技术现场试验项目“水平井桥塞射孔高效联作关键技术现场试验”(2020F-43)
中国石油天然气股份有限公司重大技术现场试验项目“深层页岩气有效开采关键技术攻关与试验”(2019F-31)。
关键词
页岩气井
套管变形
分簇射孔
泵送工艺
shale gas well
casing deformated
plug and perforating operation
pumping operation
作者简介
肖勇军(1978-),男,高级工程师,硕士,从事油气田开发管理和研究工作,E-mail:xiaoyongjun@petrochina.com.cn;通讯作者:陆应辉(1989-),男,工程师,硕士,从事射孔工艺研究工作,E-mail:luyh_cj@cnpc.com.cn。
