Beijing Huamei Inc.

Cnpc USA Corporation

China National Petroleum Corporation

Cnpc US Corporation

China National Petrolum Corporation

Jianshen Li

Jiangshui Huang

Lijun Lin

Genyao Lin

Fuchen Craig Liu

Lulu Song

Stephanie Yu

Fuchen Liu

A method to determine the velocity of static proppant settling in fracturing fluids. The proppant carrying capability of different friction reducer products can be compared, so the appropriate friction reducer product can be selected for hydraulic fracturing operations. The effect of friction reducer concentrations in the fracturing fluids, the salinity and hardness of the fracturing fluids, and the proppant size on the velocity of static proppant settling can be studied to optimize the chemical structures of the friction reducers in the process of synthesis and optimize the hydraulic fracturing operation, e.g. to determine the proper concentration of friction reducers according to the salinity and proppant size.

Apparatus and method for determining the static proppant-settling-velocity in fracturing fluids

A polyacrylamide friction reducer wherein the friction reducer contains surfactant functional groups, and wherein the polyacrylamide friction reducer is degradable, can be used for multi-functional, slickwater fracturing fluid projects. Under downhole conditions, the polymer degrades and releases the surfactant molecules to act as oil displacing agent to provide additional stimulation.

Degradable friction reducer for hydraulic fracturing treatments

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Beijing, China

Jianshen Li