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In Vlastislav bySpecific Discharge (m2/s) prosperous (m) (m) Q Skin Aspect, SF s_skin in terms of all monitored parameters.four.2 Visual inspection confirmed the five.5.10-4 of two.5 m removal Just before rehabilitation/s) 0.0023 16.85(m) two.41 (m2/s) (m3 (a) (-) (m) thickness of bottom12.7 sediments and enhanced opening of the perforation holes -4 the properly Right after rehabilitation (b) 0.0014 two.05 1.1 5.5.10-4 6.83.10 in e rehabilitation (a) 0.0023 16.85 four.two 2.41 screen (estimated by 700 ). The hydrodynamic tests showed a 24.63 reduction in Difference 4.15 two.05 two.15 1.31 6.83.10-4 1.33.10-4 rehabilitation (b) (a), (b) 0.0014 12.7 1.1 skin effect, a 51.two drawdown reduction caused by extra resistances, as well as a 24.18 rence (a), (b) 4.15 two.15 1.31 1.33.10-4 increase in specific discharge. The geophysical well logging indicated the opening of a newCoatings 2021, 11, x. https://doi.org/10.3390/xxxxxwww.mdpi.com/journal/coatings www.mdpi.com/journal/coatingsgs 2021, 11, x. https://doi.org/10.3390/xxxxxCoatings 2021, 11, 1250 Coatings 2021, 11, x FOR PEER REVIEW20 of 24 20 ofImprovement by groundwater AZD4573 manufacturer inflow 24.63the wellbore area plus a lower inside the density of 24.18 into the effectively casing 51.two 54.36 just after the rehabilitation.Table 3 shows the success price in the rehabilitation. The skin element decreased by four.15 m, and also the total drawdown just after regenerative intervention was two.15 m much less. The rehabilitation of properly MO-4 in Vlastislav by the ultrasonic method was Diminazene Metabolic Enzyme/Protease effective Q Skin Factor, SF sw s_skin Precise Discharge (-) (m) (m) (m2 /s) in terms of all monitored(m3 /s) parameters. Visual inspection confirmed the removal of two.five m thickness of bottom(a) perforation holes -4 the well Prior to rehabilitation sediments and enhanced opening of the2.41 0.0023 16.85 4.2 5.five.ten in screenrehabilitationby 700 ). The hydrodynamic tests showed a 24.63 reduction in skin Right after (estimated (b) 0.0014 12.7 two.05 1.1 6.83.10-4 impact, a 51.2 drawdown reduction caused by further resistances, and a 24.18 inDifference (a), (b) 4.15 2.15 1.31 1.33.10-4 crease in particular Improvement by discharge. The geophysical effectively logging indicated the opening of a brand new 24.63 51.2 54.36 24.18 groundwater inflow into the wellbore region plus a decrease inside the density in the effectively casing after the rehabilitation. A set of borehole geophysical measurement techniques was applied each ahead of plus a set of borehole geophysical measurement techniques was applied both before and after rehabilitation (see Figure 14). The gamma borehole geophysical technique developed a after rehabilitation (see Figure 14). The gamma borehole geophysical technique created a decrease inside the density from the casing space at depth of about 113 m, which can be interdecrease in the density of the casing space at depth of about 113 m, which could be interpreted as clearing of the collared a part of the effectively casing behind the perforated section. The preted as clearing from the collared part of the nicely casing behind the perforated section. The resistivimetry technique also indicated a significant recovery from the inflow at 123 m [62]. resistivimetry strategy also indicated a significant recovery from the inflow at 123 m [62].Table three. Evaluation of your rehabilitation of nicely MO-4.Figure 14. Effectively gravel pack density log ahead of and right after ultrasonic rehabilitation properly MO-4. Figure 14. Nicely gravel pack density log ahead of and following ultrasonic rehabilitation ofof nicely MO-4.The application of ultrasonics in the mechanical rehabilitation of well MO-4 proved The app.

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Author: haoyuan2014