Salt lake brine effective reservoir identification method

Abstract

The invention discloses a salt lake brine effective reservoir identification method, which comprises the steps of shallow seismic survey, drilling verification, core logging, specific yield measurement, permeability measurement, reservoir effective coefficient calculation, reservoir effective level division, effective reservoir delineation and the like. According to shallow seismic measurement, the reservoir can be divided into a compact layer, a relatively compact layer, a relatively loose layer and a loose layer according to abnormal values, according to the salt lake brine effective reservoir identification method, the relatively loose layer and the loose layer are important layers for searching the salt lake brine effective reservoir, a drilling project is further deployed for verification, and the effective reservoir identification method is provided for the effective reservoir. And carrying out work such as core logging, specific yield measurement and permeability measurement by using the core obtained by drilling engineering, grading the lithology, specific yield value and permeability of the reservoir, calculating the effective coefficient of the reservoir, and dividing the effective level of the reservoir, thereby achieving the purpose of delineating the effective reservoir.

Description

technical field [0001] The invention relates to the technical field of salt lake resource exploration, in particular to a method for identifying effective reservoirs of salt lake brine. Background technique [0002] Intercrystalline brine deposits and loose rock pore brine deposits are an important type of salt lake deposits. According to the results of previous exploration work, this type of deposit is rich in potassium, sodium, magnesium, lithium, boron, bromine, iodine and hammer. , Hook resources, it is of great significance to support the development of the salt lake industry. [0003] At present, the reservoir identification methods for this type of ore deposit are mainly based on drilling verification, core cataloging, pumping test and other methods. The main basis for determining the thickness of the ore layer (effective reservoir) in the calculation of resource reserves is the core cataloging, which is subject to cataloging personnel. Subjective knowledge has a gre...

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Problems solved by technology

[0003] At present, the reservoir identification methods for this type of deposit are mainly drilling verification, core recording, pumping test and other methods. The main basis for determining the thickness of the ore layer (effective reservoir) in the calculation of resource reserves is core recording. Subjective cognition has a great influence, and can only judge the effectiveness of reservoirs qualitatively, but cannot quantitatively judge the effectiveness of salt lake brine reservoirs, so as to accurately identify effective reservoirs of salt lake brine. Therefore, we propose a method for identifying effective reservoirs of salt lake brine

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