Aphron-containing oil base fluids and method of drilling a well

Details Aphron-containing oil base fluids and method of drilling a well Aphron-containing oil base fluids and method of drilling a well

1999-02-09

2000-12-05

Tucker, Philip

Earth boring, well treating, and oil field chemistry

Earth boring

Contains intended gaseous phase at entry into wellbore

507202, 175 72, 166309, C09K 708, E21B 4300, E21B 718

Patent

active

061567086

ABSTRACT:
Aphron-containing oil based well drilling and servicing fluids are disclosed which seal microfractures and the like during drilling and well servicing operations, thus decreasing the volume of fluid lost to the formations contacted by the fluids.. The fluids comprise an oleaginous liquid as the continuous phase, a viscosifier which imparts a low shear rate viscosity to the fluids of at least 10,000 centipoise, an aphron-generating surfactant, and aphrons. The fluids are used in a conventional method of drilling an oil and/or gas well or in conventional methods of servicing or treating such wells, such as in completion, workover, sand control, and frac pack operations, and as spotting fluids to release stuck pipes or tools in a wellbore.

REFERENCES:
patent: 5916849 (1999-06-01), House
patent: 5977030 (1999-11-01), House
Roy et al., Apilit Abstract 94: 5466, Abstract of Fluid/Part. Sep. J. vol. 5 No. 1, pp. 31-36, (1992).

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