N. X. Ermatov, B. Y. Nomozov, D. G’. Azizova, M. X. Ashurov, A. I. Abdirazakov, R. S. Bekjonov


  16.2.Variants of joint and separate operation…………………………………  307


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304 
16.2.Variants of joint and separate operation………………………………… 
307 
17- Chapter. Repair work in wells…………………………………………… 311 
17.1.The General nature of the work on the underground repair of wells…… 
311 
17.2.Lifting facilities and mechanisms at underground wells…………………. 312 
17.3.Underground well workover…………………………………………….. 
317 
17.4.The main measures of occupational safety in underground repair of 
wells……………………………………………………………………………. 319 
Literature…………………………………………………………………........ 322 
Glossary……………………………………………………………………….. 
323 
 

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