Fracturing fluid system and application thereof in continuous mixing fracturing technique

A fracturing fluid and system technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of high preparation cost and difficult process, reduce manual labor, solve high preparation cost, and improve liquid preparation efficiency effect
CN107779187AInactive Publication Date: 2018-03-09PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2018-03-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a fracturing fluid system and application thereof in a continuous mixing fracturing technique. The fracturing fluid system comprises a raw fluid, a crosslinking fluid and a gelbreaker, the volume ratio of the raw fluid to the crosslinking fluid is (35-200):1, the raw fluid comprises, by weight, 0.2-0.6% of hydroxypropyl guar gum, 0.005-0.03% of a viscosity promoter and 99.37-99.795% of water. Rapid hydration swelling of molecules of the hydroxypropyl guar gum is promoted through synergy between the hydroxypropyl guar gum and little of the viscosity promoter, the raw fluid of the fracturing fluid system can become viscous rapidly under normal temperature and low temperature, and the fracturing fluid system can be imparted the advantages of low price and good fracturing fluid performance; additionally, fluid dispensing efficiency is effectively improved, labor is reduced, the problems of high preparation cost and resource waste caused by the conventional fluid dispensing are solved, and the operation requirements of a large-scale hydrofracturing site are met.
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Description

Technical field

[0001] The invention relates to the technical field of petroleum exploitation, in particular to a fracturing fluid system and its application in continuous mixed fracturing technology. Background technique

[0002] With the continuous deepening of oil and gas exploitation and the increasing difficulty of exploitation, hydraulic fracturing technology has become the most important production increase measure to increase the productivity and recovery rate of oil and gas wells. Large-scale hydraulic fracturing modes for unconventional reservoirs are gradually becoming the development direction of reservoir measures, and fluid allocation has become an important part of hydraulic fracturing.

[0003] The traditional fracturing construction liquid distribution method is mainly prepared by the liquid distribution station and transported to the fracturing construction site by tank trucks. The mixing process is that the guar gum and other additives are mechanically stirred a...

Claims

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