高温高压含硫气井完井技术现状及发展趋势

Completion Technologies for HTHP Gas Wells with H_2S

随着勘探开发逐步向非常规油气藏进军,高温高压含硫气藏完井技术得到了极大发展。在调研国内外含硫气藏完井及测试技术的基础上,结合川渝、塔里木盆地等地区实践经验和成果,对高温高压含硫气井完井技术进展和适应性、完井方法的选择和设计以及装备、工具、储层保护、完井液等关键技术作了较为详尽的论述,同时提出了非常规气藏完井测试技术下一步的发展方向,认为井筒完整性、智能完井、高含硫气田完井、高温高压复杂水平井完井等是需要重点攻关和发展的技术。

Along with more and more E & P of unconventional oil and gas reservoirs, some completion technologies to high-temperature high-pressure(HTHP)gas wells with H2S improve a lot. In this study, completion technologies for H2S gas reservoirs at home and abroad are surveyed; and then, some experiences and achievements from Sichuan-Chongqing areas and Tarim Basin are summed up; and some current completion technologies for HTHP gas wells with H2S, completion methods, design, equipment, reservoir protection and completion fluid are discussed in detail; and the future development of completion technologies for unconventional gas reservoirs is also presented. It is considered that many technologies should be further developed, including wellbore integrity, intelligent completion, completion for gasfield with rich H2S, and completion for complex horizontal wells with HTHP.