[1]万向臣,王 鹏,孙永刚.长庆神木区块天然气井一次上返固井技术[J].复杂油气藏,2016,(04):68.[doi:10.16181/j.cnki.fzyqc.2016.04.015]
 Wan Xiangchen,Wang Peng,Sun Yonggang.One-time up-return cementing technology for natural gas wells in Shenmu block of Changqing Oilfield[J].Complex Hydrocarbon Reservoirs,2016,(04):68.[doi:10.16181/j.cnki.fzyqc.2016.04.015]
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长庆神木区块天然气井一次上返固井技术
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2016年04期
页码:
68
栏目:
油气工程
出版日期:
2016-12-25

文章信息/Info

Title:
One-time up-return cementing technology for natural gas wells in Shenmu block of Changqing Oilfield
作者:
万向臣12王 鹏3孙永刚4
1.西安石油大学,陕西 西安 710065; 2.中国石油川庆钻探工程有限公司钻采工程技术研究院,陕西 西安 710018; 3.中国石油川庆 钻探工程有限公司长庆固井公司,陕西 西安 710018; 4.中国石化华北石油工程有限公司井下作业分公司,河南 郑州 450000
Author(s):
Wan Xiangchen12Wang Peng3Sun Yonggang4
1.Xi'an Shiyou University,Xi'an 710065,China; 2.Engineering Technology Institute of CCDC,CNPC,Xi'an 710018,China; 3.Well Cementing Department of CCDC,CNPC,Xi'an 710018,China; 4.Down Well Service Company of North Petroleum Engineering Company limited,Zhe
关键词:
固井 低密度水泥浆 防气窜 低压易漏 泡沫水泥
Keywords:
cementing low density cement slurry prevent gas-channeling low-pressure leakage foamed cement slurry
分类号:
TE256.6
DOI:
10.16181/j.cnki.fzyqc.2016.04.015
文献标志码:
A
摘要:
长庆油田神木区块天然气井固井难度大,上部刘家沟组承压能力低,下部含气层跨度大,气层活跃,完井改造过程中井筒内压力高。为提高套管串承压能力及密封性,该区块改分级固井为一次上返固井工艺。为解决该区块一次上返固井难题,研发了以GGQ复合减轻材料为主的低密度水泥浆体系封固上部低压易漏层,泡沫防窜水泥浆体系封固下部气层活跃地层。实验表明低密度水泥浆体系受压后密度变化值小,且具有一定的防漏堵漏功能; 泡沫防窜水泥浆体系能够有效防止气窜产生。现场应用结果表明,该套体系能够解决神木区块一次上返固井难题,提高该区块固井质量。
Abstract:
The cementing technology is difficultly used to natural gas wells in Shenmu area of Changqing Oilfiled.The upper stratum is Liujiagou group with low pressure-bearing ability,and the under nature gas-bearing stratum with a long stretch is active,with high pressure in the wellhole in the process of well completion.To improve the pressure-bearing ability and tightness of the casing string,the staged cementing was changed to one-time up-return cementing in this area.In order to solve the problem of the one-time up-return cementing,we researched a low density cement slurry system based on GGQ for upper stratum with low pressure-bearing ability and anti-channeling cement slurry system with foam for the under active nature gas-bearing stratum.Experimental results showed that the density change values of low density cement slurry system is small after compression,and has function of leak-proof plugging; the foamed anti-channeling cement slurry system can effectively prevent gas-channeling.Field application results showed that the system can solve problems of up-return cementing in Shenmu area,and improve the cementing quality of the area.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-06-25; 改回日期:2016-08-26。
作者简介:万向臣(1985—),工程师,在读硕士,从事固完井技术研究工作。电话:18092108800,E-mail:wanxcg_gcy@cnpc.com.cn。
更新日期/Last Update: 2016-12-25