水平井全通径分段压裂工艺的研究和应用
Research and Application of Horizontal Well Full Bore Segregated Fracturing Technology
浏览(3013) 下载(9)
- 引用格式:
-
屈,静,刘,斌.水平井全通径分段压裂工艺的研究和应用[J].天然气与石油,2014,32(5):0.doi:
Qu Jing, Liu Bin.Research and Application of Horizontal Well Full Bore Segregated Fracturing Technology[J].Natural Gas and Oil,2014,32(5):0.doi:
- DOI:
- 作者:
- 屈 静 刘 斌
Qu Jing, Liu Bin
- 作者单位:
- 中国石化西南油气分公司工程技术研究院
SINOPEC Southwest Oil and Gas Company Engineering Technology Institute
- 关键词:
- 水平井；全通径；分段压裂；压裂；压裂工艺
Horizontal well; Full bore; Segregated fracturing; Fracturing; Fracturing technology
- 摘要:
- 川西低渗致密气藏压裂施工中采用常规Y 341套管封隔器分段压裂，发现压裂液返排不够通畅，影响了返排及压裂改造效果。通过调研评价全通径压裂工艺技术，优选连续油管拖动底封分段压裂工艺、K 344封隔器分段压裂工艺进行现场试验。详细介绍了这两种工艺的原理、特点及现场试验情况，并对现场试验结果进行了分析，得出这两种工艺都可实现井内的全通径，保证了压裂液返排和天然气产出通畅，但连续油管拖动底封分段压裂工艺的喷砂射孔设计还须进一步优化，现场试验证明K 344封隔器分段压裂工艺在川西气田具有更好的适应性。
Conventional Y341 casing packer segregated fracturing method is applied in western Sichuan low permeability tight gas reservoir fracturing construction, it is found that fracturing fluid flowback is not smooth, which results in influence on flowback and fracturing effect. Through investigation and evaluation of full bore segregated fracturing technology, preference is given to the coiled tubing dragging and bottom sealing segregated fracturing technology and K344 packer segregated fracturing technology for field test. Introduced are principles, characteristics and field test of the two technologies and analyzed are field test results. Analysis results show that the two technologies can realize downhole full bore and assure fracturing fluid flowback and smooth natural gas output. However, sandblast perforation design of the coiled tubing dragging and bottom sealing segregated fracturing technology still needs to be further optimized and K344 packer segregated fracturing technology has better adaptability in western Sichuan gas fields.
