复合射孔是射孔和高能气体压裂相结合对近井地层进行改造的一项新技术。
Perfo Frac is a new technique which combines perforation with high energy gas fracturing to improve near wellbore zone.
酸浸过程去除了可能与主处理液反应的物质，这些物质会产生不希望产生的二次反应或损害近井地层的沉淀物。
The pickling process removes materials that may react with the main treatment fluid to create undesirable secondary reactions or precipitates damaging to the near-wellbore reservoir formation.
在近井地带由机械因素造成的渗透率降低，如碎片的驱替堵塞射孔孔眼或地层。
The reduction in permeability in the near-wellbore area resulting from mechanical factors such as the displacement of debris that plugs the perforations or formation matrix.
具体到渤海高渗透疏松砂岩，这些环节包括绕丝筛管、砾石充填层、射孔孔眼、压实带及近井原状地层。
For high permeability and loose sand in bohai, these links are composed of wire wrapped screen, gravel packing zone, perf, skin and near wellbore undisturbed formation.
同时，在近井带还会形成反渗吸水锁效应，从而进一步加剧近井带地层伤害，对低渗低产凝析气井，这一现象尤为严重。
Meanwhile, reverse imbibitions water blockage effect would be appeared to further damage the near the wellbore formation, especially in the low permeability and low productivity condensate gas Wells.
对于应力敏感性强的储集层，过低的井底压力降低了近井地带地层的孔隙流体压力，导致裂缝趋于闭合。同时，井壁失稳的可能性也大。
To strong stress sensitivity formation, low BHP reduces pore fluid pressure of near wellbore are which results in the closure of formation fracture.
目前，解决上述问题最常用的办法是采用基质酸化解堵，溶蚀近井地带的堵塞物，提高地层渗透率。
Currently, Solve the above problems are most common approach is to use matrix acidizing, Corrosion near wellbore area of blockages, Increased permeability.
目前，解决上述问题最常用的办法是采用基质酸化解堵，溶蚀近井地带的堵塞物，提高地层渗透率。
Currently, Solve the above problems are most common approach is to use matrix acidizing, Corrosion near wellbore area of blockages, Increased permeability.
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