Imbibition experiment system and imbibition experiment method

Abstract

The embodiment of the invention provides an imbibition experiment system and an imbibition experiment method, and belongs to the technical field of oil reservoir development. The imbibition experimentsystem comprises an imbibition reaction device, the device comprises a reaction kettle and a weighing module arranged in the reaction kettle; and the weighing module is used for continuously detecting the weight of a rock core in the imbibition experiment process. The weighing module comprises a mounting table and a weighing sensor; the mounting table is placed on the weighing sensor and used forfixing the rock core, the rock core is not in direct contact with the weighing sensor; the mounting table comprises a supporting part and a bearing part, the supporting part is connected between theweighing sensor and the bearing part, and the bearing part is matched with the rock core in shape and is used for fixing the rock core and enabling the bottom end surface of the rock core to be in contact with the experimental liquid phase. By means of the technical scheme, the weight of the rock core at any moment can be obtained, and experimenters can judge the imbibition experiment completion time easily.

Description

technical field [0001] The invention relates to the technical field of reservoir development, in particular to an imbibition experimental system and an imbibition experimental method. Background technique [0002] With the depletion of conventional oil fields, the goal of oil production is gradually concentrated on the development of unconventional oil fields. Because unconventional oil reservoirs have the characteristics of low reservoir porosity, poor permeability, poor natural flow ability of bottom fluid, high seepage resistance, low production capacity, fast decline, etc., their production capacity and water injection capacity are extremely poor, so imbibition oil recovery is the most important method in oilfield development. play an important role in. Imbibition oil recovery is a process of using or limiting capillary force, using chemical imbibants to change the wettability of rock pore surfaces, promoting the process of imbibition, reducing capillary resistance, and...

AI Technical Summary

Problems solved by technology

The biggest defect of the existing volumetric method experimental device is that the oil droplets that seep out are easily attached to the core wall, so that the gravitational separation of oil and water cannot be realized, and the oil droplets cannot reach the metering section, resulting in inaccurate crude oil volume collected by the graduated tube. The obtained imbibition displacement efficiency has a large error, which limits its application. Therefore, the existing volumetric experimental equipment cannot meet the research needs.

Images