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US 11,999,905 B2Granted
Degradable friction reducer for hydraulic fracturing treatments
AssigneesCNPC USA Corporation, Beijing Huamei, Inc., China National Petroleum Corporation
InventorsFuchen Liu, Jianshen Li, Lijun Lin, Jiangshui Huang, Genyao Lin, Lulu Song, Stephanie Yu
Life of this patent
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Abstract
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.
Claims7
A composition for reducing friction in a fracturing fluid comprising:
- a polyacrylamide friction reducer comprising:
- a polyacrylamide polymer;
- and
- one or more surfmers bonded to the polyacrylamide polymer.
1 more element
Dependencies are inferred from the claim text.