摘要
户部寨气田气井产量低,带液能力差,减停产现象时有发生,需要经常采取气举和泡排措施维持生产,但由于井深和气量低的原因,气举过程中滑脱现象严重,泡排有效期短。为了改变气举耗时长、泡排效果慢甚至失效的不利局面,优选出具有代表意义的部1-25井,开展了平衡罐复合排液采气技术研究应用。该技术是在改进平衡罐加注药剂工艺流程的基础上将气举和泡排这两种技术结合起来,通过气举+小排量滴注泡剂,达到减小注气量、提高排液效率的目的。现场试验中,不断减小气嘴、调整泡剂浓度,最终达到5500气嘴注气配合3%浓度的泡剂溶液180kg的工作制度,单井注气量降低39.2%,单井流压降低31.6%。通过采取复合排液措施,实现了泡排、气举措施的同步进行,不仅改善了积液井的井筒流态,同时降低了积液井连续携液的注气成本,达到了预期目标。
The productivity of the gas wells in Hubuzhai gas field is low, with a poor liquid capacity, in which minus discon- tinued phenomena have occurred often, so constant gas lift and foaming measures are usually taken to maintain production. Due to the low depth and volume reasons, there exists serious slippage and the short foaming valid during the gas lift process. To change the unfavorable situation that time-consuming of gas lift, foaming effect is slow or even failure, Bu 1-25 well is selected preferably to carry out the research and application of balance tank complex draining gas recovery technology. This technology, on the basis of the improvement on balance tank filling agent process, combines the gas lift and foaming. Through gas lift ＋ drip foam agents, the injection rate is decreased and the drainage effect is improved. During the field test, the noz- zle mouth is decreased constantly and the foaming agent concentration is adjusted, eventually the work system that 5500 gas nozzle gas injection matched with the 3% concentration of foaming agent solution 180kg is reached. Single well gas injection rate is reduced by 39. 2%, 31.6% reduction in single well flow pressure. By taking a composite drain measures, we achieved the bubble row, synchronized gas lift measures, which not only improved the wellbore flow effusion, but also reduce the cost of gas injection wells of continuous liquid carrying fluid, and achieved the anticipated target.
出处
《非常规油气》
2014年第2期43-49,共7页
Unconventional Oil & Gas
关键词
户部寨气田
平衡罐
复合排液采气
Hubuzhai gas field, balance tank, composite drainage gas recovery
作者简介
缑芸（1981年生），女，工程师，副主任师，2005年毕业于江汉石油学院资源勘查工程，主要从事高酸气田采气T艺研究。邮箱：gouyungouyun@163．com。
