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US 12,680,013 B2Granted
Composition and method for improving the production of petroleum hydrocarbons
AssigneesCNPC USA Corporation, Beijing Huamei, Inc., China National Petroleum Corporation
InventorsJiangshui Huang, Nancy Zhou, Lijun Lin, Fuchen Liu, Guodong Wu, Bo Huang
Life of this patent
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Abstract
A novel surfactant composition that comprises of two surfactant components, a solvent, and water. The surfactant composition is added to a fracturing fluid, which is then pumped downhole into a subterranean formation where the novel characteristics of the fracturing fluid lend to improved oil production over the fracturing fluid without the surfactant composition.
Claims18
A surfactant solution for use as an additive in a fracturing fluid, comprising:
- a first surfactant comprising an anionic surfactant;
- a second surfactant comprising a nonionic surfactant;
- a solvent;
- and
- water;
- wherein a weight percentage ratio between the first surfactant to the second surfactant is about 0.30 to about 0.44, and wherein the second surfactant is an alkyl alkoxylated nonionic surfactant having the formula R4O(R2O)m(R3O)nH where R4 is a linear or branched alkyl group having 5 to 30 carbon atoms, m is an integer from 5 to 30, and n is an integer from 1 to 20.
3 more elements
Dependencies are inferred from the claim text.