Mud invasion multifunctional physical simulation system of formation module

Abstract

The invention discloses a multifunctional physical simulation system for formation module mud invasion, which includes a formation module saturation device, a drilling mud preparation device and a mud invasion physical simulation device. Data acquisition device, the simulated shaft is respectively connected to the feeding bin and the pressurized pump, and the stirring shaft and the impeller are installed at the position of the shaft of the simulated shaft, and the stirring shaft is connected to the stirring motor by transmission, and a window is opened on the simulated shaft, and the sector The invasion chamber is equipped with a fan-shaped formation module, which is sealed and connected to the window of the simulated wellbore, and a fluid loss flow measurement device is installed at the outlet of the fan-shaped invasion chamber, and the invasion dynamic data acquisition device is connected to the invasion chamber. The invention has the characteristics of modularization, visualization, realistic simulation degree, high utilization rate, high precision, complete functions, etc., and the multi-invasion chamber structure is convenient for comparative experiment design.

Description

technical field [0001] The invention relates to the field of petroleum exploration and development, and belongs to the technical category of reservoir rock physics experiments, in particular to a comprehensive experiment platform for simulating drilling mud intrusion into rock modules. Background technique [0002] Drilling mud invasion has always been a difficult problem in the exploration and development of oil and gas fields. During overbalanced drilling, the invasion of mud filtrate and fine particles changes the original state of the reservoir around the well. Misjudgments and missed judgments reduce the accuracy of reservoir logging evaluation; at the same time, mud invasion will also lead to blockage of seepage channels near the wellbore reservoir, seriously affecting single well productivity, and causing huge economic losses to the exploration and development of oil and gas reservoirs. As low porosity and permeability reservoirs have gradually become the main battlef...

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Problems solved by technology

[0006] In view of the high cost and low utilization rate of the simulated well-scale mud invasion simulation device, the simulation degree of the core-scale and sand-filled model mud invasion simulation device is not realistic enough, etc., the present invention designs an experimental object with a moderate size and complete functions, which can realistically simulate complex drilling. The formation module mud invasion multi-functional physical simulation system of mud invasion under certain conditions provides a theoretical basis for the study of reservoir mud invasion characteristics and reservoir damage assessment, and is helpful for improving the success rate of oil and gas reservoir exploration and development, optimizing drilling mud performance, and protecting reservoirs. Capacity is significant

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