Method and device for judging effluent of medium-base volcanic bound water

Abstract

The invention discloses a method and a device for judging effluent of medium-base volcanic bound water. The method comprises the steps that a measurement result of a target rock core is acquired, wherein the target rock core is a rock core of to-be-detected medium-basic volcanic rock, and the measurement result is result data obtained by measurement of nuclear magnetic porosity and T2 cut-off values of the target rock core; nuclear magnetism movable bound water saturation and nuclear magnetism porosity of the target rock core are determined according to the measurement result; and the nuclearmagnetism movable bound water saturation and the nuclear magnetism porosity of the target rock core are judged according to a preset relational expression to determine whether the effluent of the to-be-detected medium-base volcanic rock exists or not, and the preset relational expression is used for representing a linear relationship between the nuclear magnetism movable bound water saturation andthe nuclear magnetism porosity. According to the method, the problem that volcanic rock and other complex stratums cannot be accurately explored in related technologies is solved.

Description

technical field [0001] The present application relates to the field of petroleum exploration, in particular, to a method and device for judging the effusion of bound water from intermediate-basic volcanic rocks. Background technique [0002] In oil and gas exploration, fluid type discrimination is an important parameter in well logging interpretation. Whether the formation produces water is closely related to reservoir understanding and later development. [0003] With the continuous deepening of oil and gas exploration, complex formations such as volcanic rocks have gradually become the focus of exploration. However, compared with clastic rock reservoirs, volcanic rock reservoirs generally have a larger burial depth, and the rock types are varied and heterogeneous, and the pore structure of volcanic rock reservoirs is more complex. The above factors all have non-negligible influence on the change degree of resistivity. Therefore, the fluid property discrimination method ba...

AI Technical Summary

Problems solved by technology

[0006] This application provides a method and device for judging the bound water of intermediate-basic volcanic rocks, so as to solve the problem that the complex formations such as volcanic rocks cannot be accurately explored in related technologies

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