Az91d Magnesium Alloy Az31 Drillable Bridge Plug Reliable Anchoring

Dissolvable Magnesium Alloy ControllableDegradation Rate For Dissolvable Bridge Plugs

Introduction:

In order to reliably meet the basic requirements of bridge plugs in oilfield construction: they can be delivered, sealed, put into production, and eliminated, it is necessary to effectively control the performance parameters of newly developed products and the quality control of existing models. Carry out the detection of the simulated downhole environment.

The strong plasticity, stiffness and processing properties of soluble magnesium alloy materials are far superior to those of degradable polymer materials, and the degradation rate can be effectively regulated by methods such as composition adjustment, heat treatment, plastic deformation, and surface treatment. So it is an ideal soluble bridge plug material.

Advantage:

Dissolvable magnesium alloy and soluble compound rubber dissolve in water containing electrolytes, i.e. they can dissolve in fracturing fluid, oil, water, gas mixture, formation water, active water, fracturing rejection fluid and other media, and the dissolution rate is related to the ambient temperature, chlorine concentration, water content, as well as acidity and alkalinity.

Application:

The soluble bridge plug with soluble magnesium alloy as the main material has a simple structure. The materials of the upper vertebral body, the sealing cylinder, the lower vertebral body and the lower joint are all magnesium-based alloy materials, and the dissolution rate is the same under the same environmental conditions. Accurately grasp the overall dissolution time of the bridge plug, using magnesium-based alloy materials to ensure the compressive strength, with a certain elastic deformation, and can achieve complete dissolution in the later stage; the outside of the sealing cylinder is sprayed with an alloy coating, which has high hardness and can be Ensure reliable anchoring and sealing between the outer surface of the sealing cylinder and the inner wall of the casing, and at the same time form fine particles after dissolving, which are discharged together with the backflow liquid; the structure of the sealing cylinder is ingenious, and the functions of anchoring and sealing are realized at the same time, and there is no need to separately set slips and seals, while the function is not reduced, the number of connecting parts is reduced, and the connection method is simple and reliable, which reduces the processing difficulty and manufacturing cost.

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