METHOD OF WELLBORE TREATMENT

FIELD: oil and gas producing industry, particularly, treatment of wellbore with hydraulic jets in drilling and completion of wells of various application. SUBSTANCE: method includes treatment of wellbore in course of drilling with drilling mud jets in two stages different in parameters of action on...

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Bibliographische Detailangaben
Hauptverfasser:	SAGIDULLIN I.A, KATEEV I.S, KHANIPOV R.V, POLJAKOV V.N, ISHBAEV G.G, STAROV O.E, ISHKAEV R.K, STAROV V.A
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ADHESIVES CHEMISTRY DYES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MINING MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PAINTS POLISHES
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Beschreibung
Zusammenfassung:	FIELD: oil and gas producing industry, particularly, treatment of wellbore with hydraulic jets in drilling and completion of wells of various application. SUBSTANCE: method includes treatment of wellbore in course of drilling with drilling mud jets in two stages different in parameters of action on bottomhole and wellbore zones and followed by each other. This is attained by change of direction and force of dynamic impact of hydraulic jet. At the first stage, force of jet dynamic impact into wellbore wall at bottomhole is, at least, 0.15 tf, at the second stage, at least 0.30 tf. EFFECT: higher efficiency and quality of hydraulic jet treatment of permeable and unstable rocks. 1 ex