I have 3 companies that I follow that I consider to be one of a kind in what the do, one is Gasfrac and I will paste a short description from their site,I feel it is only a matter of time before the industry begins to use this process more.
>GASFRAC Energy Services Inc’s. proprietary LPG (Liquefied Petroleum Gas) Fracturing Process utilizes gelled LPG in place of conventional fracturing fluids. The unique properties of the LPG fracturing process result in significant savings on material expenses and fracture clean up, as well as increased well productivity.
The gelled LPG used in the fracturing process has the ability to both generate the necessary fracture system, carry the proppant through the wellbore and place into the oil and gas reservoir being stimulated.
The LPG used in the process is highly soluble in formation hydrocarbons. As a result, the LPG process results in less damage to formations than conventional hydraulic fracturing. And unlike conventional treatments where as much as 50% of the carrier remains in the reservoir and hinders well performance, virtually 100% of the LPG can be recovered.
Oil and gas producers use fracturing to increase the conductivity of an oil or gas zone within a reservoir to improve production and recovery of hydrocarbons.
The most common reservoir stimulation is hydraulic fracturing, whereby viscous fluid with suspended proppant (grains of quartz sand or ceramic material) is pumped through the wellbore and into the reservoir zone that is being stimulated. Proppant and fracturing fluid are mixed in a blender and then pumped into a well that penetrates an oil or gas bearing formation. As high pressure is applied to the well, the formation fractures and proppant carried by the fracturing fluid flows into the fracture. The deposited proppant holds the fracture open after pressure is relaxed and production is resumed.
Each fracture treatment is individually designed to take account of the specific temperatures, pressures, formation permeability, and reservoir fluids expected in the producing zone in which fracturing will be performed. The fracturing fluid must have a sufficient viscosity to carry the proppant into the fracture, should minimize formation damage and must be safe to use. A fracturing fluid that remains in the formation after fracturing is not desirable since it may block pores and reduce well production.<
