Migration of formation solids in a wellbore is restrained by feeding a slurry, comprising water, a viscosifier, and a concentration of cement clinker particles, into the wellbore, and hydrating the clinker particles in the wellbore. The clinker particles are kept in suspension during the hydrating, and upon completion of the hydrating the hydrated clinker particles form a hardened cement consisting of a permeable structure of interconnected hydrated clinker particles. A layer of degradable lost circulation material (LCM) may be employed to separate the slurry with clinker particles from the formation surrounding the wellbore during hydrating of the clinker particles.

The present disclosure provides hydraulic fracturing treatment fluid compositions and systems, and methods of controlling proppant flowback and/or controlling sand production in a hydrocarbon-bearing formation using the hydraulic fracturing treatment fluid compositions and systems.

Wellbore synthesis techniques are disclosed suitable for use in geothermal applications. Embodiments are provided where open hole drilled wellbores are sealed while drilling to form an impervious layer at the wellbore/formation interface. The techniques may be chemical, thermal, mechanical, biological and are fully intended to irreversibly damage the formation in terms of the permeability thereof. With the permeability negated, the wellbore may be used to create a closed loop surface to surface geothermal well operable in the absence of well casing for maximizing thermal transfer to a circulating working fluid. Formulations for the working and drilling fluids are disclosed.

A well treatment composition for use in a hydrocarbon-bearing reservoir comprising a reversible aminal gel composition is disclosed. The reversible aminal gel composition includes a liquid precursor composition. The liquid precursor composition is operable to remain in a liquid state at about room temperature. The liquid precursor composition comprises an organic amine composition; an aldehyde composition; a polar aprotic organic solvent; and a metal salt composition with valence 3, 4, or 5. The liquid precursor composition transitions from the liquid state to a gel state responsive to an increase in temperature in the hydrocarbon-bearing reservoir. The gel state is stable in the hydrocarbon-bearing reservoir at a temperature similar to a temperature of the hydrocarbon-bearing reservoir, and the gel state is operable to return to the liquid state responsive to a change in the hydrocarbon-bearing reservoir selected from the group consisting of: a decrease in pH in the hydrocarbon-bearing reservoir and an addition of excess metal salt composition in the hydrocarbon-bearing reservoir.

Systems and methods for treating fracture faces and/or unconsolidated portions of a subterranean formation are provided. In some embodiments, the methods comprise: providing an aqueous alkali solution; introducing the aqueous alkali solution into at least a portion of a subterranean formation that comprises one or more fractures; contacting an aluminum component and a silicate component with the aqueous alkali solution to form a geopolymer on one or more fracture faces in the fractures; and placing a plurality of proppant particulates in the fractures.

Methods and compositions including treatment fluids that include geopolymers for use in subterranean formations are provided. The methods of the present disclosure include introducing a treatment fluid including a geopolymer material into a wellbore penetrating at least a portion of a subterranean formation, wherein the geopolymer material includes an aluminosilicate source, a metal silicate source, an activator, and water; contacting a first fluid present in the wellbore with the treatment fluid; and allowing the treatment fluid to displace at least a portion of the first fluid from at least a portion of the wellbore.

A method for consolidating sand in a subsurface formation includes introducing a consolidation composition into the subsurface formation. The consolidation composition includes asphaltene and maltene dissolved in a solvent. After introducing the consolidation composition, the method further includes introducing an aqueous composition to the subsurface formation in order to precipitate the asphaltene in the subsurface formation. The precipitated asphaltene consolidates sand within the subsurface formation and the maltene forms channels throughout the subsurface formation, thereby increasing the permeability of the subsurface formation.

The present disclosure provides hydraulic fracturing treatment fluid compositions and systems, and methods of controlling proppant flowback and/or controlling sand production in a hydrocarbon-bearing formation using the hydraulic fracturing treatment fluid compositions and systems.

A method of treating a wellbore in a subterranean formation including introducing a first fluid into a formation, wherein the first fluid comprises: a first water soluble salt and a carrier; placing a second fluid into the formation, wherein the second fluid comprises: a second water soluble salt and a carrier, wherein the first fluid and second fluid produce a solid precipitate upon contact; and allowing the solid precipitate to form in-situ in the formation. An acid may be added to the wellbore after formation of the precipitate. The method may be also used for stabilizing a wellbore during drilling, and shutting off and reopening a region in a formation.

Treatment method for a rock formation against sand infiltration during production of fluid from this rock formation via a well drilled through said rock formation, comprising at least one step of injecting a geopolymer cement grout into said rock formation, in particular around the edges of said well and/or through said well.