【摘要】：新研發(fā)的井下工具必須經(jīng)嚴(yán)格實(shí)驗(yàn)檢驗(yàn)才能投放現(xiàn)場(chǎng),因此,實(shí)際工況的準(zhǔn)確模擬顯得尤為重要。針對(duì)固井滑套在壓裂時(shí)具有大排量與高含砂比的特點(diǎn),設(shè)計(jì)了四泵串并聯(lián)方式的工況模擬實(shí)驗(yàn)?zāi)Ｐ�。根�?jù)實(shí)驗(yàn)條件,先假設(shè)沖蝕實(shí)驗(yàn)設(shè)備連接方案為兩泵并聯(lián)方式,而理論計(jì)算得出泵為管路所提供的揚(yáng)程需達(dá)到35.82 m,與實(shí)測(cè)單臺(tái)離心泵Q H特性曲線相結(jié)合,最終確定了設(shè)備連接方案為四泵串并聯(lián)方式。通過監(jiān)測(cè)模擬沖蝕實(shí)驗(yàn)中的排量與含砂比,結(jié)果表明,所設(shè)計(jì)的實(shí)驗(yàn)方案能夠滿足模擬大排量(4.5～7.0 m3/min)、高含砂比(體積比25%)的沖蝕要求且存在較大余量;同時(shí)得出進(jìn)行壓裂作業(yè)時(shí)不同孔眼數(shù)的滑套對(duì)管路整體壓力損耗、實(shí)驗(yàn)流量、泵送能力等影響明顯。
[Abstract]:The newly developed downhole tools must be strictly tested before they can be put on the spot, so it is particularly important to simulate the actual working conditions accurately. In view of the characteristics of large displacement and high sand content in fracturing, a working condition simulation experimental model of four pumps in series and parallel mode is designed. According to the experimental conditions, it is assumed that the connection scheme of the erosion experimental equipment is the parallel mode of the two pumps, and the theoretical calculation shows that the lift provided by the pump for the pipeline needs to reach 35.82 m, which is combined with the measured Q-H characteristic curve of a single centrifugal pump. Finally, the equipment connection scheme is determined to be a series-parallel mode of four pumps. By monitoring the ratio of displacement to sand content in the simulated erosion experiment, the results show that the designed experimental scheme can meet the simulated large discharge (4.5 m3/min). The erosion requirement of high sand content ratio (volume ratio 25%) is high and there is a large margin. At the same time, it is concluded that the sliding sleeve with different number of holes has obvious influence on the overall pressure loss, experimental flow rate and pumping capacity of the pipeline.
【作者單位】： 西南石油大學(xué)機(jī)電工程學(xué)院;中國(guó)石化石油工程技術(shù)研究院;
【分類號(hào)】：TE931.2

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