【摘要】：多孔噴嘴是徑向水平井技術(shù)的核心技術(shù)裝備,需同時(shí)實(shí)現(xiàn)高效破巖與強(qiáng)力自進(jìn),而目前常用的多孔噴嘴的流量系數(shù)一般在0.6左右,其能量轉(zhuǎn)換效率僅為36%左右,嚴(yán)重限制了多孔噴嘴的整體性能。因此,研究多孔噴嘴流量系數(shù)影響規(guī)律十分必要。根據(jù)流量系數(shù)定義推導(dǎo)了多孔噴嘴流量系數(shù),試驗(yàn)確定了各孔眼局部阻力系數(shù),并研究了排量、孔眼數(shù)量對(duì)多孔噴嘴流量系數(shù)影響規(guī)律。結(jié)果表明,多孔噴嘴能量轉(zhuǎn)化效率等于其流量系數(shù)的平方;其流量系數(shù)由各孔眼流量系數(shù)與其權(quán)重決定;孔眼流量系數(shù)主要取決于其沿程阻力系數(shù)與局部阻力系數(shù);絕大部分能量損失由局部阻力損失引起;而孔眼局部阻力系數(shù)隨著排量增加略有降低,但隨著孔眼數(shù)目增加而迅速增大。
[Abstract]:The porous nozzle is the core technology equipment of radial horizontal well technology, which needs to realize high efficiency rock breaking and strong self-advancing simultaneously. However, the flow coefficient of the commonly used nozzle is generally about 0.6, and its energy conversion efficiency is only about 36%. This severely limits the overall performance of the porous nozzle. Therefore, it is necessary to study the influence law of flow coefficient of porous nozzle. According to the definition of flow coefficient, the flow coefficient of porous nozzle is deduced, the local resistance coefficient of each hole is determined by experiments, and the influence of displacement and the number of holes on the flow coefficient of porous nozzle is studied. The results show that the energy conversion efficiency of the porous nozzle is equal to the square of its flow coefficient, the flow coefficient is determined by the flow coefficient of each hole and its weight, and the flow coefficient of the hole is mainly determined by the coefficient of resistance along the path and the coefficient of local resistance. Most of the energy loss is caused by local resistance, but the local resistance coefficient decreases slightly with the increase of displacement, but increases rapidly with the increase of the number of holes.
【作者單位】： 中國石油大學(xué)(北京)油氣資源與探測(cè)國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家863計(jì)劃項(xiàng)目(2015AA043401) 國家科技重大專項(xiàng)(2011ZX05036002) 中國石油大學(xué)(北京)科學(xué)基金項(xiàng)目(2462013BJRC002)
【分類號(hào)】：TE921

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相關(guān)期刊論文 前2條

1 周新建,陳聽寬;引射噴嘴流量系數(shù)的計(jì)算方法[J];化工學(xué)報(bào);2002年10期

2 ;[J];;年期

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