STABLE SUSPENSION AND METHOD FOR PROCESSING OF HYDROCARBON-BEARING UNDERGROUND GEOLOGICAL FORMATIONS (VERSIONS) Russian patent published in 2009 - IPC C09K8/90 C09K8/56 E21B43/22 E21B43/267 

FIELD: oil and gas industry.

SUBSTANCE: stable suspension for treatment of underground bed comprises superlight macroparticles and carrier fluid, which consists of xanthan gum or xanthan modification, water and polysaccharide that additionally differs from xanthan. Quantitative ratio polysaccharide: xanthan in suspension makes from approximately 8:1 to approximately 1:8 with total content of polysaccharide and xanthan or its modification 1.2-7.2 g/l. Apparent specific weight of specified macroparticles is less or equal to 2.45 with their content of 60-959 g/l. In method of hydrocarbon-bearing underground geological formations processing, above mentioned suspension is pumped into underground formation. Application of above mentioned method for hydraulic rupture of specified formation, in which specified suspension is prepared in advance, adding polysaccharide and xanthan gum or its modification into water, and then specified macroparticles are introduced as proppant. Inventions are developed in dependent points of formula.

EFFECT: preparation of stable suspension for processing of underground bed.

23 cl, 9 ex, 2 tbl, 3 dwg