| 摘要 |
FIELD: geotechnological mining operation methods, particularly for oil extraction from unstable and semiconsolidated reservoirs. ^ SUBSTANCE: composition includes oil-well cement used as binding agent, structure-forming agent, hardener and mixing liquid. The composition additionally includes filler, namely quartz sand, and structure-forming agent, namely sodium chloride used in granular form with granule dimensions equivalent to that of quartz sand. Hardener and mixing liquid is saturated sodium silicate solution. All above components are taken in the following amounts (% by weight): oil-well cement - 25-48, quartz sand - 10-15, sodium chloride - 21-57, saturated sodium silicate solution - remainder. ^ EFFECT: reduced cost of composition ingredients, provision of necessary filter permeability and strength parameters, increased oil recovery from reservoir, possibility of composition usage in high-temperature wells. ^ 1 tbl |
