[1]张超,郝明慧,杨国通,等. 致密气生产井微型压裂诊断技术[J].油气井测试,2020,29(04):51-55.[doi:10.19680/j.cnki.1004-4388.2020.04.009]
　ZHANG Chao,HAO Minghui,YANG Guotong,et al.Microfracturing diagnosis technology for tight gas producing wells[J].Well Testing,2020,29(04):51-55.[doi:10.19680/j.cnki.1004-4388.2020.04.009]
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 致密气生产井微型压裂诊断技术()
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《油气井测试》[ISSN:1006-6977/CN:12-1485/TE]

卷:
29卷
期数:
2020年04期
页码:
51-55
栏目:
出版日期:
2020-08-25

文章信息/Info

Title:
Microfracturing diagnosis technology for tight gas producing wells
文章编号:
1004-4388(2020)04-0051-05
作者:
 张超1; 郝明慧1; 杨国通1; 王小波2; 刘鑫1; 周冲1
 1.中海油能源发展股份有限公司山西分公司 山西晋中 030600
2.中国石油吐哈油田分公司鄯善采油厂 新疆吐鲁番 838202
Author(s):
ZHANG Chao1;  HAO Minghui1;  YANG Guotong1;  WANG Xiaobo2;  LIU Xin1;  ZHOU Chong1
关键词:
 ; 致密气井;  微型压裂;  小型压裂测试;  用液量;  闭合压力;  施工压力;  压后返排
Keywords:
tight gas wells;  micro fracturing;  smallscale fracturing test;  fluid volume used;  closure pressure;  operating pressure;  flowback after fracturing
分类号:
TE357
DOI:
10.19680/j.cnki.1004-4388.2020.04.009
文献标志码:
B
摘要:
 针对致密储层小型压裂测试耗时长、用液多等问题，提出在主压裂开始之前以较低排量和较少液量的微型压裂对地层进行快速诊断，获取地层闭合压力和重张压力，估算地层水平最大主应力。LX区块一口致密气生产井中应用微型压裂，施工排量10 m3/min，注入13 m320%KCl溶液，确定地层闭合压力为28 MPa，估算地层水平最大主应力为323 MPa，主压裂施工期间油压维持在382～445 MPa，调整压后返排油嘴切换时机为油压132 MPa。微型压裂有效地指导了压裂施工参数优化及压后返排，提高了施工安全性。压后采用压裂软件分析，验证了微型压裂估算闭合压力的准确性。
Abstract:
 To solve the problems of small fracturing test in tight reservoirs, such as long time consuming and more fluids using, it is proposed to quickly diagnose the formation with lowdisplacement and lessfluid micro fracturing before the main fracturing, and then estimate the maximum horizontal principal stress of the formation after obtaining its closure pressure and reopening the pressure. Micro fracturing was applied to a tight gas producing well in LX block. The operating displacement was 10 m3/min, and 13 m3 20% KCl solution was injected. The closure pressure was determined to be 28 MPa, and the maximum horizontal principal stress was estimated to be 323 MPa. The oil pressure was maintained at 382-445 MPa during the main fracturing period. The tubing pressure was determined to be 132 MPa when adjusting switching timing of flowback choke after fracturing. Micro fracturing effectively guides the optimization of fracturing operating parameters and backflow after fracturing, which improves operating safety. The fracturing software is used for analyzing after fracturing, which verifies the accuracy microfracturing closure pressure estimated.

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备注/Memo

备注/Memo:
 2020-05-15收稿，2020-07-01修回,2020-07-05接受,2020-08-20网络版发表
张超，男，1986年出生，工程师，2009年毕业于中国石油大学（北京）石油工程专业，现从事压裂设计、工艺技术及现场指挥工作。电话：18102312075；Email：zhangchao39@cnooc.com.cn。通信地址：山西省吕梁市临县白文镇秦家坪村中海油能源发展股份有限公司山西分公司压裂基地，邮政编码：033299。
更新日期/Last Update: 2020-09-22