Seabed hydrate reservoir double-effect transformation slurry, application and application method

Abstract

The invention is suitable for the technical field of materials, and provides double-effect modification slurry for a seabed hydrate reservoir, application and an application method.The double-effect modification slurry is prepared from, by mass, 10-25% of a reaction base solution A, 10-20% of a reaction base solution B, 40-60% of a permeation enhancer, 0.1-1% of a reaction control agent, 0.3-2% of a reinforcing agent, 5-10% of a viscosity reducer and 1-5% of a clay stabilizer. According to the present invention, the rapid curing can be performed in the seabed hydrate reservoir temperature pressure environment to form the stable porous support network skeleton with characteristics of high flow conductivity and high strength, and the strong cementation effect with the sediment can be provided, such that the reservoir permeability is improved, the reservoir stability is increased, the double-effect modification of the natural gas hydrate reservoir is achieved, and the construction cost is reduced. Safe and efficient development of the natural gas hydrate is facilitated. In addition, the slurry can also be applied to the field of transformation and yield increase of soft and loose reservoirs such as coal seams, mud layers and weak cemented sand layers, the problems of crack closure, support failure and the like in the transformation process of the loose or soft unconventional oil and gas reservoir can be effectively solved, the purposes of yield increase, stable yield and high yield are achieved, and the development period is prolonged.

Description

technical field [0001] The application belongs to the technical field of materials, and in particular relates to a double-effect reforming slurry, application and application method of a submarine hydrate reservoir. Background technique [0002] Reservoir stimulation is to improve the formation permeability and the connectivity between the wellbore and the reservoir through effective technical measures, thereby achieving the purpose of increasing production and injection. Hydraulic fracturing is a conventional method for reservoir stimulation. It is widely used in conventional low permeability, ultra-low permeability and unconventional oil and gas reservoirs. Conventional hydraulic fracturing is to use the ground high-pressure pump group to pump pre-fracturing fluid into the formation through the wellbore to form one or more pre-pressed fractures in the formation, and then pump sand-carrying fluid mixed with proppant into the fractures. After the fracturing fluid breaks the...

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Problems solved by technology

[0005] The embodiment of the present application provides a double-effect reconstruction slurry for subsea hydrate reservoirs, which aims to solve the problem that existing reservoir reconstruction slurry can only play the role of creating fractures and increasing permeability, and the grouting materials used for formation reinforcement can only achieve Strengthening and impermeability issues

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