Abstract: A gel material for oil and gas conformance control operations is provided. The gel material includes a plurality of gel material components including polyacrylamide, triamine silica, and nanosilica which are added in suitable amounts to form the gel material under a gel formation condition. The present technology replaces and/or supplements conventional crosslinkers and provides enhanced polymeric gels, such as, for oil and gas field applications including wellbore strengthening, loss circulation materials, and water shut-off applications, at high temperatures. The present technology is compatible with fresh and high salinity water.

Abstract: A method for preparing PAM with the aluminum-based crosslinker is provided. The method includes diluting the PAM with deionized water; adding the crosslinker gradually while stirring at room temperature; sonicating in a water bath; adding HCl and KOH to adjust pH; and testing compatibility with salts.

Abstract: A gel material for oil and gas conformance control operations is provided. The gel material includes a plurality of gel material components including polyacrylamide, triamine silica, and nanosilica which are added in suitable amounts to form the gel material under a gel formation condition. The present technology replaces and/or supplements conventional crosslinkers and provides enhanced polymeric gels, such as, for oil and gas field applications including wellbore strengthening, loss circulation materials, and water shut-off applications, at high temperatures. The present technology is compatible with fresh and high salinity water.

Abstract: Excessive water production from oil reservoirs is a main challenge facing the oil and gas industry nowadays. Polymeric gelants have been widely applied to seal the water production zones leading to a more feasible production operation. This disclosure introduces a new inorganic crosslinker that can potentially replace the conventional chromium acetate as crosslinkers for polyacrylamide in low-temperature reservoirs. The developed formulation has the advantage of being more environment-friendly compared to the known-to-be toxic chromium acetate. The formulation has been tested through the whole pH range examining the rheological behavior of the mature gels in the temperature range between 25 to 100° C. While chromium acetate was proven to be sensitive to the presence of sour gases, namely CO2 and H2S, due to the inability to produce a stable gel at the acidic conditions, the proposed crosslinkers are more tolerable towards the high acidity.