辽河稠油火驱开发地面工艺关键技术

Key Technology of Fire-Flooding Development of Liaohe Heavy Oil

辽河油田为进一步提高稠油采收率,2005年开始在杜66块开展了稠油火驱开采研究和现场试验工作。通过国外技术考察、现状调研和技术攻关,形成了适用于辽河稠油油藏有效开采的包括空气注入、小环串接集油、原油预脱水、尾气脱硫脱烃、污水高效气浮等火驱开采地面配套工艺技术,建成了集高压注气、油气集输、原油脱水、尾气处理、污水处理等生产设施为一体的火驱工业区。截止2018年底,杜66块累计建设141个井组,年产油规模26.3×104t,年注气3.53×108m3。实现以火驱开发、地面工艺技术优化创新驱动油田高质量发展目标,有力支撑辽河油田千万吨稳产。

In order to further enhance heavy oil recovery in Liaohe oilfield, heavy oil fire-flooding research and field test have been carried out in Block Du66 since 2005. Through foreign technical investigation, current situation investigation and technical tackling, the matching surface technology for the effective exploitation of Liaohe heavy oil reservoir has been formed, including air injection, small ring series oil gathering, pre-dehydration of crude oil, desulfurization and hydrocarbon removal of tail gas, high efficiency air flotation of sewage, etc. A Fire-flooding industrial zone integrating high pressure gas injection, oil and gas gathering and transportation, crude oil dehydration, tail gas treatment and sewage treatment has been built. By the end of 2018,141 well groups have been built in Block Du66, with an annual oil production scale of 26.3×10 4 t and an annual gas injection of 3.53×10 8 m 3. The target of oilfield quality development driven by fire-flooding and innovated surface process technology has been realized, which provides strong support for stable production of Liaohe oilfield.