Reservoir hydraulic fracturing Questions and Answers

Q: What is the reservoir of  hydraulic fracturing ?
A: The use of hydraulic pressure transmission effect in that buried deep in the formation of cracks in the reservoir formation method is called hydraulic fracturing of oil.
Q: reservoir hydraulic fracturing What is the rationale?
A: The reservoir generally refers to the use of hydraulic fracturing fluid pressure transmission principle, in the ground with a large displacement high pressure pump, will have a certain viscosity of the liquid can absorb greater than the capacity of the reservoir to the oil injection, so that the wellbore pressure is gradually increased, when the pressure increased to greater than the pressure needed to rupture the reservoir, the reservoir will form one or several horizontal or vertical cracks. When the crack formation later, with the continuous injection of the liquid, the crack will continue to extend and expand until the liquid injection rate and reservoir can absorb the same speed, at which time the cancellation of external cracks will re-close.
In order to maintain the fracture in an open state, at the same time with the fracturing fluid into the mixing certain proportion of solid particles having a higher strength to support the  Proppant  fractures do. Since the support is to undergo a rigorous screening, it has good size and strength, precipitation in the cracks, so that changes the near wellbore formation conductivity, thereby reducing the liquid flow into the wellbore from the formation of resistance.
Q: reservoir hydraulic fracturing What is the purpose?
A: The oil hydraulic fracturing purpose is to change the physical structure of the reservoir, the reservoir is formed artificially high penetration ability of one or several channels, to reduce the flow resistance near wellbore, increasing the flow capacity of the wells to obtain yield .
Q: What is the role of reservoir fracturing
A: The reservoir for  Hydraulic fracturing  has the following effects:
1 lift drilling or workover process because killing fluid reservoir caused by pollution and congestion.
(2) improving the uneven thick reservoir permeability layer down contradiction.
3 to improve ability to penetrate the low permeability reservoirs, wells adjusted interlayer and flat contradictions and improve performance;
4 original extension and communication reservoir cracks and channels, improve the ability of oil wells and water injection wells capabilities.