Apparatus, systems, and methods for fracturing a geological formation
The present disclosure relates, according to some embodiments, to apparatus, systems, and methods of fracturing a geological structure including the application of kinetic energy (e.g., from high velocity frack fluid) to a subterranean structure. In some embodiments, the present disclosure relates to apparatus, systems, and methods for delivery of high velocity fluid to a well using a down hole valve and/or throttling system. The present disclosure relates to apparatus, systems, and methods of generating pressure using accumulators (e.g., high pressure accumulators) at the surface of a well.
1. A method of kinetically fracking a subterranean structure, the method comprising:
(a) providing a fracking string inside a perforated wellbore liner having an interior cavity, the fracking string having an interior channel and spaced-apart apertures connecting the interior string channel and the liner cavity, comprising the steps of
(i) providing the fracking fluid at a pressure of about 8,000 psi to about 10,000 psi, wherein the fracking fluid is substantially free of proppant;
(ii) adding at least one proppant to the fracking fluid; and
(iii) injecting the fracking fluid with proppant into the interior channel;
(b) accelerating a fracking fluid in the interior channel in a downhole direction to a velocity of from about 40 to about 100 feet per second; and
(c) abruptly decelerating fracking fluid flow.
2. A method of kinetically fracking a subterranean structure according to claim 1 further comprising repeating steps (b) and (c); or
wherein abruptly decelerating fracking fluid flow further comprises closing the string apertures, sealing the interior liner cavity or combinations thereof; or
wherein the accelerating a fracking fluid in the interior channel in a downhole direction further comprises injecting the fracking fluid at a pressure of about 8,000 psi to about 10,000 psi into the interior channel; or
wherein accelerating a fracking fluid in the interior channel in a downhole direction further comprises injecting a gas into the interior channel at a pressure of about 8,000 psi to about 10,000 psi; or
wherein the injected gas is carbon dioxide, nitrogen, methane, or combinations thereof; or
wherein the fracking fluid comprises up to about 30% (V/V) gas and at least about 70% (V/V) fluid; or
wherein abruptly decelerating the fracking fluid flow further comprises delivering to the subterranean structure a kinetic energy pulse of finite duration of more than about 1,000,000; or
wherein abruptly decelerating the fracking fluid flow further comprises delivering to the subterranean structure a kinetic energy pulse of finite duration of about 2,000,000 ft lbs to about 5,000,000 ft lbs.
3. A method of kinetically fracking a subterranean structure according to claim 2 , wherein abruptly decelerating the fracking fluid flow occurs in a well of about 12,000 feet deep.