水力喷射增产工艺技术研究进展

Status of Hydraulic Jetting Stimulation Technology

在一般低渗透油田,水力压裂技术可作为一项行之有效的增产改造技术,而在一些多产层、产层间距较大的油田,常规水力压裂技术进行逐层压裂难以实现。水力喷射压裂技术与常规水力压裂技术有所不同,该技术是高速水射流技术与常规的水力压裂相结合的产物,其具有自封隔的特点,无需其他机械封隔,能准确造缝,并能与常规酸化技术相结合,实现定点酸压。因此,水力喷射压裂及其相关配套技术正成为低渗透油田经济开发的有力手段。

Hydraulic fracturing is effective in stimulating low permeability reservoirs. However,there is some deficiency in conventional hydraulic fracturing. For example,it is difficult to achieve successive fracturing when the formation is multilayered with long intervals between each layer. Hydraulic jetting fracturing is different from hydraulic fracturing. It is a combination of conventional hydraulic fracturing and high speed water jetting technology,with a characteristic of selfisolation. It can implement fracturing without any mechanical packers. Spotted acid fracturing can be implemented with jetting fracturing technology. Therefore,hydraulic jetting fracturing and correlated techniques have become an effective approach for the economic development of low permeability oilfield.