深穿透复合射孔技术在低渗透油田的应用与认识

Application and Cognition of Deep Penetration Compound Perforation Technology in Low-permeability Oilfields

随着油田开采进入高含水期,为了实现新投扩边区块以及局部加密井点剩余油的有效挖潜,充分发挥地层产能,不断发展完善大孔径、深穿透射孔完井工艺就显得越来越重要。深穿透复合射孔技术把射孔技术与高能气体压裂技术有机结合,具有改造油层作用的一项新型射孔技术。该技术较单独射孔和单一高能气体压裂的疏通半径都大,通过在葡萄花油田近3年的现场应用,取得了较好的试验效果和实践认识,该技术对于低产低渗透油田提高产能具有很好的推广应用前景。

With the oilfield exploitation going into the stage of higher water-cut, in order to achieve the effective excavation of remaining oil in new step-out wells and local infilling wells, and fully develop the formation production, it is more and more important to develop and improve big diameter and deep penetration perforation completion technology. Deep penetration compound perforation technology joins organically the perforation technology and high-energy gas fracturing technology, which is a new perforation technology being able to reform formation. The dredge diameter is bigger than both that of solo perforation and single high-energy gas fracturing technology. After nearly three years field application, we obtain better tentative purpose and practical cognition. The technology has very good prospect in log application of low production and low permeability oilfield.