摘要:
A method of drilling and completing a wellbore in a subterranean formation comprises circulating an invert oil emulsion fluid in the subterranean formation; the invert oil emulsion fluid comprising an oil phase, an emulsifier, and an internal phase comprising an alcohol other than a polycyclicpolyetherpolyol with molecular weight in excess of 50,000 and a salt dissolved in the alcohol, wherein the alcohol and the salt are selected such that the salt has a solubility in the alcohol of greater than about 3 g/100 ml at 23° C.
摘要:
Examples of techniques for performing a wellbore construction operation in a wellbore are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method includes: performing a rheology test on a test fluid, the test fluid being representative of a fluid pumped through the wellbore, to generate test fluid data; performing, by the processing device, a data analysis on the test fluid data to generate at least one parameterized correlation; measuring a first property of the fluid to generate measured data; calculating, by the processing device, a second property of the fluid in the wellbore by using the parameterized correlations and the measured data to generate calculated data; and changing a parameter of the wellbore construction operation based at least in part on the calculated data.
摘要:
In a method for enhancing the compatibility of a zinc-brine completion fluid with a fracturing fluid, test samples of selected completion fluids are combined with test samples of selected fracturing fluids to form an admixture. The parameters of incompatibility between the completion fluid and the fracturing fluid are analyzed and identified. The parameters or indicia of incompatibility identified can be precipitation, emulsification and/or an increase in viscosity. The zinc brine completion fluid is then blended with additives to remove these parameters of incompatibility. The additives can be selected from a group comprising hydrochloric acid, hydrobromic acid, acetate salts, citrate salts, and surfactants. At the well site, the altered zinc brine completion fluid is pumped in to displace drilling fluids in the wellbore before pumping in fracturing fluid. Additional altered brine completion can follow the fracturing fluid into the wellbore. Commingling of the altered zinc brine completion fluid with fracturing fluid in the wellbore or the formation can occur without substantial damage to the formation.
摘要:
Examples of techniques for performing a wellbore construction operation in a wellbore are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method includes: performing a rheology test on a test fluid, the test fluid being representative of a fluid pumped through the wellbore, to generate test fluid data; performing, by the processing device, a data analysis on the test fluid data to generate at least one parameterized correlation; measuring a first property of the fluid to generate measured data; calculating, by the processing device, a second property of the fluid in the wellbore by using the parameterized correlations and the measured data to generate calculated data; and changing a parameter of the wellbore construction operation based at least in part on the calculated data.
摘要:
A method of drilling and completing a wellbore in a subterranean formation comprises circulating an invert oil emulsion fluid in the subterranean formation; the invert oil emulsion fluid comprising an oil phase, an emulsifier, and an internal phase comprising an alcohol other than a polycyclicpolyetherpolyol with molecular weight in excess of 50,000 and a salt dissolved in the alcohol, wherein the alcohol and the salt are selected such that the salt has a solubility in the alcohol of greater than about 3 g/100 ml at 23° C.