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4D-stress evolution of tight sandstone reservoir during horizontal wells injection and production: A case study of Yuan 284 block, Ordos Basin, NW China
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ZHU Haiyan,SONG Yujia,LEI Zhengdong,TANG Xuanhe
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Table 3 Re-fracturing parameters and MS monitoring results of Well PH5
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| Stage | Perforation
depth/m | Perforation method | Fluid volume/
m3 | Proppant volume/
m3 | MS event region length/m | MS event
region width/m | MS event region height/m | Azimuth of MS events | Number of
MS events | | West | East | West | East | West | East | | 1 | 2885.0-2900.0 | Existing perforation clusters | 717.8 | 40 | 161 | 105 | 50 | 45 | 50-80 | NE93° | 70 | 63 | | 2 | 2818.0-2833.0 | 862.3 | 60 | 150 | 112 | 40 | 40 | 50-70 | NE83° | 55 | 44 | | 3 | 2744.0-2759.0 | Failure | | 4 | 2670.0-2685.0 | 768 | 50 | 245 | 122 | 90 | 70 | 43 | NE75° | 45 | 19 | | 5 | 2631.0-2633.0 | New perforation clusters | Failure | | 6 | 2572.0-2587.0 | Existing perforation clusters | 845.3 | 60 | 230 | 140 | 70 | 55 | 50 | NE72° | 17 | 12 | | 7 | 2497.0-2512.0 | 913 | 60 | 275 | 285 | 65 | 65 | 50 | NE62° | 30 | 27 | | 8 | 2430.0-2440.0 | 789.1 | 50 | 270 | 270 | 50 | 65 | 27 | NE64° | 18 | 25 | | 9 | 2362.0-2372.0 | 784.7 | 50 | 200 | 180 | 30 | 30 | 29 | NE66° | 18 | 15 | | 10 | 2315.0-2317.0 | New perforation clusters | 592.2 | 40 | 225 | 212 | 30 | 30 | 30 | NE63° | 22 | 16 |
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