| ZHU Xiao-hua,ZHANG Qin,ZHANG Yang-ming,DONG Liang-liang.Study on Erosion Wear Characteristics of High Pressure Manifold Tee[J],50(7):258-265 |
| Study on Erosion Wear Characteristics of High Pressure Manifold Tee |
| Received:October 11, 2020 Revised:December 08, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.07.027 |
| KeyWord:high pressure manifold tee numerical simulation erosion rate erosion wear |
| Author | Institution |
| ZHU Xiao-hua |
Southwest Petroleum University, Chengdu , China |
| ZHANG Qin |
Southwest Petroleum University, Chengdu , China |
| ZHANG Yang-ming |
Downhole Operation Company of CNPC Chuanqing Drilling Engineering Co.Ltd, Guanghan , China |
| DONG Liang-liang |
Southwest Petroleum University, Chengdu , China |
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| Abstract: |
| In the process of shale gas exploitation, the influence of sand-containing fracturing fluid on tee erosion wear of high pressure manifold and its main influencing factors are studied. Based on the two-phase flow particle erosion theory, the numerical calculation model of tee erosion was established to predict the parts prone to erosion wear during the use of the tee, and the effects of tee azimuth angle, fracturing fluid flow, volume fraction, particle diameter, and fracturing fluid density on the erosion rate of the tee were studied. The results show that the most serious erosion of Y-type tee and the disproportionate tee is on the intersection line between branch pipe and main pipe. Under the premise of controlling single factor variable, the maximum erosion rate of the Y-type tee increases by 12.7 times as the azimuth angle increases from 30° to 150°, while the maximum erosion rate of the disproportionate tee increases 1.85 times with the azimuth angle increasing from 30° to 90°, and the maximum value appears near 60°. With the fracturing fluid flow increasing from 0.5 m3/min to 2.5 m3/min and from 1 m3/min to 4 m3/min, the maximum erosion rate of the Y-type tee and the disproportionate tee increased by 232.5 times and 7.5 times, respectively. Meanwhile, as the volume fraction increased from 2% to 10%, the particle size increased from 200 μm to 600 μm, and the density increased from 1000 kg/m3 to 1400 kg/m3, the maximum erosion rate of the Y-type tee and the disproportionate tee increased by 4.4 times, 0.63 times, 1.3 times and 4.4 times, 0.58 times and 1.06 times, respectively. The maximum erosion rate of both tees increases with the increase of flow rate and volume fraction, and decreases with the increase of particle diameter. The maximum erosion rate of Y-type tee becomes larger with the increase of spatial angle and fracturing fluid density. However, when the spatial angle of disproportionate tee is 60°, the erosion is the most serious, and the fracturing fluid density has little impact on it. |
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