大庆地区深部取套修井技术的应用

APPLICATION OF IN-DEPTH CASING PULLING WORKOVER TECHNOLOGY IN DAQING AREA

王洪英 周庆刚 奚广春

Wang Hongying Zhou Qinggang Xi Guangchun

大庆石油管理局钻井研究所, 黑龙江大庆 163413

大庆油田已进入开发的中后期,随着投产时间的延长和作业次数的增加,井况变差,作业井和待大修井逐年增多,尤其由于高压注水、地质和工程技术等因素造成的套损井逐渐增多。目前,大庆约有6000多口套管损坏井,占投产油水井总数的17.22%,对油田可持续发展影响巨大。根据深部取套修井技术在大庆地区的应用情况,介绍了深部取套修井工艺、深部取换套方法、修井施工中出现的问题及解决办法,对发展深部取套工艺提出几点建议,为国内各油田深部取套修井提供参考。

The production wells that need repairing increase rapidly with the development of Daqing Oilfield in its late period, and many wells are casing damaged wells caused by high pressure water injection, geological condition and engineering errors. The number of casing damaged wells reach as high as 6000, which accounts 17.22% of the total production wells, and this greatly impacts the continuous developing of this oilfield. The in-depth casing pulling workover technology, which is very effective for casing damaged wells, is applied in this area. Its working procedure, casing pulling and changing method, troubles and solutions during workover are introduced, and some recommendations on this technology are presented for reference.

10.3969/j.issn.1000-7393.2000.05.008