Fracturing filling sand prevention performance test system and test method and evaluation method thereof

Abstract

The invention discloses a fracturing filling sand prevention performance test system and test method and an evaluation method thereof, which can optimize fracturing sand prevention construction parameters and can improve the fracturing sand prevention effect. The system comprises a fracturing filling belt single-wing crack sand-blocking visual simulation main body device and a fracturing filling belt double-wing crack sand-blocking bilinear flow visual simulation main body device which are arranged in parallel, and the purposes of different experiment tests and evaluation for fracturing filling sand-preventing crack filling belt flow and sand blocking can be achieved. The whole system is comprehensive in function, reasonable in process and capable of achieving automatic sand adding, automatic sand passing collection, automatic data collection and the like. Data monitored by the experiment system is comprehensive, and comprehensive test data support is provided for comprehensive sand prevention performance evaluation of the crack filling zone. The performance index evaluation method provided by the invention measures the flow guiding performance, the sand blocking performance and the comprehensive performance of the fracturing sand prevention filling layer, and is scientific and reasonable in evaluation.

Description

technical field [0001] The invention relates to the technical field of oil and natural gas development and exploitation, in particular to a fracturing filling sand control performance testing system and a testing method and evaluation method thereof. Background technique [0002] At present, more than 70% of conventional oil and gas fields in the world are weakly cemented unconsolidated sandstone reservoirs. Such reservoirs have the characteristics of high permeability and poor cementation. Sand production in oil wells is one of the engineering problems often encountered in the production process. Fracturing packing sand control is a mainstream sand control technology, which combines hydraulic fracturing and gravel packing, and fills the fractures opened by hydraulic fracturing with gravel or ceramsite to achieve the dual purposes of sand control and production stimulation. Fracturing packing sand control mainly relies on the packing zone in the fracture to hold back formati...

AI Technical Summary

Problems solved by technology

[0003] (1) The existing testing device used to evaluate the sand control characteristics of the filling medium in the fracture filling zone is relatively simple, and mainly evaluates the sand-retaining characteristics of the filling medium itself, and cannot simulate the sand-retaining and flow characteristics of fractures in the formation environment

Filling medium performance evaluation test system under the condition of lack of real fractures

[0004] (2) For the comprehensive performance evaluation of fracturing and sand control fracture filling media, the evaluation factor considered is mainly the flow conductivity, and there is a lack of evaluation of sand retaining effect and comprehensive effect, and a systematic quantitative evaluation method

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