METHOD OF SEALING OF OIL AND GAS WELLS

oil and gas producing industry. SUBSTANCE: at least, one section of casing string located in zone of possible attack of liquid or gaseous medium is formed in form of one or several successively connected casing pipes with external surface coating from stainless steel 0.3-0.5 mm thick and with surfac...

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Bibliographische Detailangaben
Hauptverfasser:	KASHIK A.S, MUKHIN A.S, SHAKIROV R.A, GARIPOV V.Z, KALISTRATOV G.A
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	oil and gas producing industry. SUBSTANCE: at least, one section of casing string located in zone of possible attack of liquid or gaseous medium is formed in form of one or several successively connected casing pipes with external surface coating from stainless steel 0.3-0.5 mm thick and with surface roughness of 40-80 mcm. EFFECT: higher ecological safety of wells and casing string endurance. 1 dwg