摘要
分支井克服了单一水平井“一井一层”的局限，进一步发挥了水平井“少井高产”的突出优点，但是由于分支井钻井时间长，储层污染严重，尤其对于低渗储层，酸化压裂解堵增产措施必须考虑。目前，关于分支井增产方法的研究还较少，现场施工也不多见。分析总结了分支井酸化压裂储层改造中的几个关键问题，给出了目前成功的解决方法，并对国外分支井储层改造的现场应用实例进行了分析总结。现场应用表明，无论是生产井还是注水井，酸化、酸压和水力压裂措施都能在多分支井中成功实施，并取得很好的增产增注效果。
Branch wells overcame the limitation of ＂one layer for one well＂ in a single horizontal well, further exerted the outstanding advantage of ＂higher productivity with fewer wells＂ in horizontal wells, but due to long drilling time and severe pollution to reservoirs in branch wells, especially for low permeability reservoirs, stimulation of acidization iYacturing block- removal must be considered. At present, there is little research about production increase with branch wells methods, neither is the site operation. This paper has analyzed and summarized several key problems in the transformation of acidization fi＇acturing reservoirs in branch wells, offered successful solutions at present, also analyzed and sunnnarized site application examples of reservoir transformation in foreign branch wells. Site application indicates that no matter producers or water injectors, aacidizing, acidified fracturing and hydraulic fracturing measures can be successfully implemented in muhi-branch wells with fantastic effect in production and injection increase.
关键词
多分支井
酸化
压裂
定向
层问封隔
multi-branch well
acidizing
fracturing
orientation
interbedded isolation
