Fracturing fluid sand-suspending capability evaluation device and evaluation method

Abstract

The invention provides a fracturing fluid sand-suspending capability evaluation device and an evaluation method thereof. The device comprises a visual sand-suspending determination container, a proppant mass measurement system and a data collection processing system, wherein the proppant mass measurement system comprises a proppant tray, a weight sensor, a lifter and a timing controller; the proppant tray is positioned inside the inner cylinder of the sand-suspending determination container and is connected with the weight sensor and the lifter, and the timing controller is used for measuring the time of a depositing process of the proppant; and the data collection processing system is used for collecting signals obtained in the proppant mass measurement system and outputting a real-time data curve by means of software conversion. The fracturing fluid sand-suspending capability evaluation device can be used for performing sand-suspending and depositing mechanism experimental researches of proppants with different grain sizes in sand-carrying liquids with different sand-liquid ratios under the conditions of different temperatures to quantitatively and accurately give out a related relationship between the proppant depositing amount and the depositing time in real time, so that a depositing and sand-suspending change rule of the proppant in the sand-carrying liquid can be obtained, and experimental data support is provided to optimized evaluation of a fracturing fluid and a proppant and optimization of a fracturing scheme.

Description

technical field [0001] The invention relates to the technical field of hydraulic fracturing stimulation of oil and gas reservoirs, and more particularly relates to an evaluation device and evaluation method for sand suspension capacity of fracturing fluid. Background technique [0002] The goal of hydraulic fracturing is to form an effective high-conductivity fracture system in the formation, and proppant is one of the core carriers in forming a high-conductivity fracture system. Whether a certain concentration of proppant can be smoothly transported to The fracture system and laying in the predetermined ideal position directly determine the effective conductivity of the fracture and the effectiveness and success of the entire fracturing operation. The suspension and settlement characteristics of proppant during fracturing and fracture closure after fracturing not only affect the effective sand-carrying of fracturing fluid during fracturing construction, the increase of sand...

AI Technical Summary

Problems solved by technology

[0006] Factors such as fracturing fluid type, sand-carrying fluid concentration, proppant particle size, and experimental temperature all have a great influence on proppant suspension / sand-carrying performance; The performance test method can only obtain the settlement velocity of single particle proppant and the complete settlement velocity index of proppant in the sand-carrying fluid, which can only indirectly reflect the suspension of proppant in the fracturing fluid system from a macro perspective , but cannot quantitatively, accurately, and real-time give the settlement change rule of the proppant in the sand-carrying fluid under different experimental temperature conditions, which directly affects the selection of fracturing fluid and proppant, the optimization of fracturing scheme and the fracturing process. construction effectiveness

Images