LIGHT GROUTING MORTAR

oil and gas production. SUBSTANCE: invention relates to grouting mortars used when cementing casing string in gas, gas condensate, and oil boreholes complicated by the presence of weakly bound rocks prone to hydraulic rupture. Mortar contains, wt %: grouting Portland cement 38.89-58.07, hollow alumi...

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Bibliographische Detailangaben
Hauptverfasser:	SHCHERBICH N.E, KRYLOV G.V, FROLOV A.A, SHTOL' V.F, SANDAKOV A.V, KARELINA N.E, POLUBABKIN V.A
Format:	Patent
Sprache:	eng
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:	oil and gas production. SUBSTANCE: invention relates to grouting mortars used when cementing casing string in gas, gas condensate, and oil boreholes complicated by the presence of weakly bound rocks prone to hydraulic rupture. Mortar contains, wt %: grouting Portland cement 38.89-58.07, hollow aluminosilicate microspheres 6.45-17.14, mud powder 0.71-1.78, water - the balance. When slaking grouting mortar with lightening additive (hollow microspheres based on clayey suspension containing mud powder and water), density of grouting mortar is lowered to 1.25 g/cu.cm. EFFECT: increased spreadability of mortar and improved sedimentation stability. 2 tbl