A method to manufacture native soil flowable fill includes hydro excavating native soil to form a hole at a first excavation, and transferring the native soil from the first excavation to a mixing tank. The method also includes adding a pozzolan component, cement and water to the mixing tank, mixing the native soil in the mixing tank with the added pozzolan component, cement and water to form the native soil flowable fill, and transferring the native soil flowable fill back to the first excavation and into the hole.

Disclosed herein are compositions and methods for increasing the viscosity of a calcium-containing fluid by addition of a modifying agent. The resulting enhanced viscosity fluid may be used in a variety of applications including drilling, to create an enhanced-viscosity fluid, and demolition/mining to create an expansive putty for use in underwater and overhead applications.

Methods of the present disclosure relate to tailoring cement compositions to withstand carbon dioxide injection. A method comprises predicting a depth of carbonation in a cement sheath; predicting spatially varying mechanical properties of the cement composition due to the carbonation; and determining a mechanical response of the cement sheath based on the spatially varying mechanical properties of the cement composition.

A method of cementing an annular space between a pipe string and a well bore, the method comprising the steps of (a) providing a cement composition including a calcium-deficient calcium silicate; (b) mixing the cement composition with water to form a cement slurry; (c) mixing the cement slurry composition with carbon dioxide form a foamed cement; and (d) placing the foamed cement in the annular space between the pipe string and the wellbore.

A method of cementing an annular space between a pipe string and a well bore, the method comprising the steps of (a) providing a cement composition including a calcium-deficient calcium silicate; (b) mixing the cement composition with water to form a cement slurry; (c) mixing the cement slurry composition with carbon dioxide form a foamed cement; and (d) placing the foamed cement in the annular space between the pipe string and the wellbore.

Disclosed herein are compositions and methods for sealing a leak in a well. In many embodiments, the leak is sealed by deploying a mixture of water and a phenolic curable resin into the well, wherein the resin polymerizes and hardens at and around the leak in the well. In various embodiments, the well may be an oil, gas, or geothermal well.

A cellular glass insulation system for an outer surface of a structure or pipe. The insulation system includes multiple segments of cellular glass. An adhesive having a reduced permeability is provided at the interface between the individual cellular glass segments and is configured to limit water intrusion that might cause corrosion of the structure or pipe.

Provided are solvent cement formulations that include cyclopentanone, one or more additional solvents, and at least one resin. The formulations can contain a high concentration of dissolved resin, which confers beneficial properties and enables the use of the formulations for bonding large diameter piping components.

Compositions and methods for thermal reach enhancement (TRE) are presented in which a TRE material comprises at least two functionally distinct solid components that enable high thermal conductivity with minimal flowback during and after placement, even where the TRE is placed into a low permeability formation. The first component is characterized by low kinetic friction and deformability upon compression, the second component is characterized by high internal and external kinetic friction and interlocking upon compression, and the first and second components form a compacted hybrid high thermal k material with minimal void space.