SU1550075A1 - Borehole expander - Google Patents
Borehole expander Download PDFInfo
- Publication number
- SU1550075A1 SU1550075A1 SU874353966A SU4353966A SU1550075A1 SU 1550075 A1 SU1550075 A1 SU 1550075A1 SU 874353966 A SU874353966 A SU 874353966A SU 4353966 A SU4353966 A SU 4353966A SU 1550075 A1 SU1550075 A1 SU 1550075A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- rock
- flushing
- pancreas
- nodes
- expander
- Prior art date
Links
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- Earth Drilling (AREA)
Abstract
Изобретение относитс к буровой технике, а именно к породоразрушающему инструменту дл расширени скважин. Цель - увеличение эффективности работы расширител за счет улучшени промывки. Расширитель скважин включает корпус 1 с породоразрушающими узлами 5, центральным промывочным каналом (ПК) 2 и размещенными выше и ниже породоразрушающих узлов 5 наклонными боковыми ПК 3. Каждый боковой ПК размещен в проеме между соседними породоразрушающими узлами 5. Верхние и нижние боковые ПК установлены в смежных проемах. Удаление шлама с забо опережающей скважины осуществл етс потоком промывочной жидкости (ПЖ), истекающей через центральный ПК 2. Так как потоки ПЖ, истекающие из нижних боковых ПК, направлены в проемы между породоразрушающими узлами 5, свободными от нисход щих потоков ПЖ, истекающих из верхних боковых ПК 3, очищающий эффект ПЖ на ступени расширени увеличиваетс . 3 ил.The invention relates to a drilling technique, namely, a rock cutting tool for expanding wells. The goal is to increase the efficiency of the expander by improving the flushing. The expander includes a housing 1 with rock-breaking nodes 5, a central flushing channel (PC) 2 and inclined lateral PC 3 placed above and below the rock-breaking nodes 5. Each lateral PC is located in the opening between adjacent rock-breaking nodes 5. The upper and lower lateral PCs are installed in adjacent openings. Sludge is removed from an advance well by a flushing fluid (RV) flowing through the central PC 2. Since the pancreas flows from the lower lateral PCs are directed into the openings between the rock destructive units 5 that are free from the descending pancreas flows from the upper side PC 3, the cleaning effect of the pancreas at the expansion stage is increased. 3 il.
Description
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Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874353966A SU1550075A1 (en) | 1987-12-30 | 1987-12-30 | Borehole expander |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874353966A SU1550075A1 (en) | 1987-12-30 | 1987-12-30 | Borehole expander |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1550075A1 true SU1550075A1 (en) | 1990-03-15 |
Family
ID=21346528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874353966A SU1550075A1 (en) | 1987-12-30 | 1987-12-30 | Borehole expander |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1550075A1 (en) |
-
1987
- 1987-12-30 SU SU874353966A patent/SU1550075A1/en active
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