| 摘要 |
Geo-chemical method for survey of oil and gas includes sampling earth, extraction from samples of chemical elements in movable forms, acid extraction from samples of chemical element-indicator of group of metals, reveal of sections with abnormal content in extractions of element-indicator of hydrocarbons depending on scale of tests. Earth sampling is carried out in discrete test sites that are reticularly placed in territory under investigation, samples are extracted from eluvial earth horizon B, extraction of element-indicator of hydrocarbons is carried out by means of water solution of sulphuric acid with molar concentration (0.1-0.2) mol/dmat ratio of earth mass to mass of extra-agent 1:5, in extractions one separately measures content of bivalent and trivalent iron, by results of measurements one calculates value of index of oil-and-gas presence of interior as ratio of concentration in extractions of bivalent iron to concentration of trivalent iron there, and places of location of oil and gal depositions are determined by territory placement of local congestion more than of two discrete values of index of oil and gas presence that exceed average arithmetic of set of all realized values more than by one statistic standard deviation same for it. |
