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- W2360260628 abstract "In layers deeper than the Ordovician system of Shengli oilfield, severe lost circulation often occur during drilling operation due to existence of mature cavern fissure system and lower formation pressure factor (0. 56-0. 88). In well ZG10-G1, a polymer sulfonated collapse prevention drilling fluid was used in 311. 1 mm hole. In 215. 9 mm hole, polyol and positive colloid drilling fluid aerated with Nitrogen (density is 1. 03 g/cm3) was used, associated with MTC plugging technology. Application in field demonstrates that using MTC technology, the fluid has excellent thixotropic property, wide range of thickening time for adjustment, and the stone possesses high pressure strength. Operation of MTC onsite is simple, completely suitable for plugging carven fissure layers at low pressure in deep well. By employing Nitrogen aeration in drilling fluid technology, the problem of lost circulation was effectively avoided, and equivalent circulation density of fluid was reduced and drilling rate also increased. The polyol and positive colloid drilling fluid system exhibits prominent lubricity at high temperature (180 ℃), meeting requirements of Nitrogen aeration in drilling fluid in ultra-deep well." @default.
- W2360260628 created "2016-06-24" @default.
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- W2360260628 date "2003-01-01" @default.
- W2360260628 modified "2023-09-23" @default.
- W2360260628 title "Application of aerated drilling fluid and MTC plugging technology in deep well ZG10-G1" @default.
- W2360260628 hasPublicationYear "2003" @default.
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