[1]廖刚,贺秋云,朱铁栋. 威204井区排采作业页岩气井口降温技术[J].油气井测试,2022,31(02):25-30.[doi:10.19680/j.cnki.1004-4388.2022.02.005]
　LIAO Gang,HE Qiuyun,ZHU Tiedong. Shale gas wellhead cooling technology for dewatering gas production in Wei 204 well block[J].Well Testing,2022,31(02):25-30.[doi:10.19680/j.cnki.1004-4388.2022.02.005]
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 威204井区排采作业页岩气井口降温技术()
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《油气井测试》[ISSN:1006-6977/CN:12-1485/TE]

卷:
31
期数:
2022年02
页码:
25-30
栏目:
出版日期:
2022-04-25

文章信息/Info

Title:
 Shale gas wellhead cooling technology for dewatering gas production in Wei 204 well block
文章编号:
1004-4388(2022)02-0025-06
作者:
 廖刚; 贺秋云; 朱铁栋
 中国石油集团川庆钻探工程有限公司试修公司 四川成都 610000
Author(s):
 LIAO Gang;  HE Qiuyun;  ZHU Tiedong
 Well Testing and Workover Company, CNPC Chuanqing Drilling Engineering Co., Ltd., Chengdu, Sichuan 610000, China
关键词:
 ; 威204井区;  页岩气;  输气管网;  降温技术;  节流降温;  排水采气;  输气效率
Keywords:
Wei 204 well block;  shale gas;  gas transmission pipeline network;  cooling technology;  throttling cooling;  dewatering gas production;  gas transmission efficiency
分类号:
TE377
DOI:
10.19680/j.cnki.1004-4388.2022.02.005
文献标志码:
B
摘要:
 页岩气井井口温度高，部分地层水气化进入输气管网，入网后又冷凝成水，造成了输压升高、管线腐蚀。通过先导性试验和工程试算，明确了近90%能量浪费在对返排水的降温，故先除水再降温。经对冷冻式降温、涡流管降温、节流降温技术的对比分析，确立以节流降温为核心的井口页岩气降温技术。研制和配套了降温关键装备，形成了“高效除水+节流降温+循环降温”的复合工艺技术，探索到了一套全新的排采作业页岩气井口降温方法。该技术在威204井区进行了10余井次的现场应用，成功实现了井口高温页岩气的高效降温，最大温降超过了40℃，减少了气田水进入管输系统，提高了输气效率和本质安全，为页岩气规模化商业化开发奠定了基础。
Abstract:
 Due to the high wellhead temperature of shale gas wells, part of the formation water enters the gas transmission network after gasification and then condenses into water, resulting in the increase of transmission pressure and pipeline corrosion. Through the pilot test and engineering calculation, it has been clarified that nearly 90% of the energy is wasted in cooling the backwater, so the water should be removed before cooling. Through the comparative analysis of refrigeration cooling, vortex tube cooling and throttling cooling technologies, the core of wellhead shale gas cooling technology is defined as throttling cooling. The corresponding key cooling equipment has been developed, forming a composite process technology of “efficient water removal + throttling cooling + cyclic cooling”, and a new set of cooling method for shale gas at wellhead in dewatering gas production has been established. The technology 〖JP2〗has been applied in more than 10 well times in Wei204 well block, and has successfully realized the efficient cooling of high temperature shale gas at the wellhead. The maximum temperature drop is more than 40℃, which reduces the amount of the water entering the pipeline 〖JP〗system. This technology improves the gas transmission efficiency and safety and lays a foundation for the largescale commercial development of shale gas.

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备注/Memo

备注/Memo:
 2021-03-24收稿，2021-10-30修回,2022-01-25接受,2022-04-20网络版发表
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廖刚，男，1983年出生，硕士研究生，工程师， 2010年毕业于西南石油大学油气井工程专业，目前从事油气井试修测试研究与现场服务工作。
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更新日期/Last Update: 2022-05-07