双复射孔技术在河南油田的应用

双复射孔技术是近几年发展起来的一项增效射孔技术,各油田应用已取得较好的效果。介绍了双复射孔技术的原理、技术特点;河南油田B320井的应用情况表明,在地质条件下基本相同的情况下,采用该技术射孔,油层压裂施工时,破裂压力明显降低,加砂量增加;压后产液量增加,注水量提高。该技术特别适用于在低孔、低渗油气层,具有广泛的的使用前景。

Application of dual re-perforation technique in Henan oilfield

The technique of dual re-perforation is a new synergis-tic technique in recent years with a good application effect in many oil fields.The principle and technical features of the dual re-perforation technology is briefly introduced.The application in well B320 in Henan oil field suggests that when the technology is used in cracking oil horizons under the same geological setting,the cracking pressure is sharply reducing;the sand amount needed is increasing;the pro-duced fluid volume after cracking is increasing;and the wa-ter injection is increasing.The technology is especially appli-cable to the low-porosity and-permeability oil and gas ho-rizon.