Viscoelastic compositions

22-07-2014 дата публикации

Номер:

US8785355B2

Автор: HARTSHORNE ROBERT SETH, HUGHES TREVOR LLOYD, JONES TIMOTHY GARETH JOHN, TUSTIN GARY JOHN, ZHOU JIAN

Принадлежит: HARTSHORNE ROBERT SETH, HUGHES TREVOR LLOYD, JONES TIMOTHY GARETH JOHN, TUSTIN GARY JOHN, ZHOU JIAN, SCHLUMBERGER TECHNOLOGY CORP, SCHLUMBERGER TECHNOLOGY CORPORATION

Контакты:

Номер заявки: 09-11-4664

Дата заявки: 15-05-2009

The present invention provides aqueous viscoelastic compositions comprising a cleavable anionic surfactant which is a sulphonate and possibly also an electrolyte. The cleavable surfactants useful in the present invention comprise a chemical bond, which is capable of being broken under appropriate conditions, to produce oil soluble and water soluble products typically having no interfacial properties and surface activity compared with the original surfactant molecule. Further, the rheological properties of the aqueous viscoelastic composition are usually altered upon cleavage of the cleavable surfactant generally resulting in the elimination of the viscosifying, viscoelastic and surfactant properties of the composition. Aqueous viscoelastic compositions in accordance with the present invention are suitable for use in oil-field applications, particularly for hydraulic fracturing of subterranean formations. Thus, the present invention also relates to a wellbore service fluid and a method of fracturing a subterranean formation.

CPC - классификация

B B0 B01 B01F B01F1 B01F17 B01F17/B01F17/0 B01F17/00 B01F17/005 B01F17/0057 B01J B01J1 B01J13 B01J13/B01J13/0 B01J13/00 B01J13/007 B01J13/0078 B01J13/008 B01J13/0082 C C0 C07 C07C C07C3 C07C30 C07C309 C07C309/C07C309/1 C07C309/15 C07C309/17 C09 C09K C09K2 C09K22 C09K220 C09K2208 C09K2208/C09K2208/3 C09K2208/30 C09K23 C09K23/C09K23/0 C09K23/00 C09K8 C09K8/C09K8/6 C09K8/68 C09K8/7 C09K8/74

IPC - классификация

C C0 C07 C07C C07C3 C07C30 C07C309 C07C309/C07C309/1 C07C309/15 C09 C09K C09K8 C09K8/C09K8/5 C09K8/53 C09K8/532 C09K8/6 C09K8/68 C09K8/7 C09K8/74

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