Changes
/* Graphical representation of Assignee's holding patents of Slickwater fracturing */
These sections now concentrate on the work done by the companies or institutes.
===Baker Hughes===
[http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.html&r=1&f=G&l=50&s1=%2220100089580%22.PGNR.&OS=DN/20100089580&RS=DN/20100089580 US20100089580A1] titled "Method of enhancing fracture conductivity" by Baker Hughes. In hydraulic fracturing, fracturing fluid containing gelled fluid, viscosifying polymers and surfactants used to provide fluid viscosity for proppant packing but often leads to the formation of filter cake which causes conductivity damage.
-Fracturing through low viscosity fracturing fluids like water, salt brine and slickwater show difficult in producing desired fracture length as proppant placement in the fracture is often not possible in low viscosity fluids
-Hybrid fracturing technique was also not able to control the conductivity damage due to use of proppant laden slickwater slurry.
Fracturing method in two stages helps in reducing the conductivity damage. The two stages comprise of first stage which is the introduction of '''proppant free stage''' and the second is the '''proppant ladden stage'''. Additives such as viscosifying polymer, friction reducers and viscoelastic surfactant comprising fracturing fluid were used in any one of the two stage process. Further flushing with breaker containing fluid in two stage process helps in degrading and disintegration of the filter cake and thus helps in reducing the conductivity damage.
[http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=7699106.PN.&OS=PN/7699106&RS=PN/7699106 US7699106B2] titled "Method for reducing fluid loss during hydraulic fracturing or sand control treatment" by Baker Hughes. Hydraulic fracturing treatment using high ASG (Apparent Specific Gravity) proppant and high viscous fracturing fluid often leads to-
-High ASG leads directly to increasing degree of difficulty with proppant transport and reduced propped fracture volume, thereby reducing fracture conductivity.
-Polymer-based fracturing fluids leads to formation of creating a relatively impermeable filter cake and thereby damaging the desired conductivity of the proppant pack, in some cases reducing the proppant pack conductivity by over 90%.
Hydraulic fracturing treatment by using '''ULW (Ultra lightweight) proppant and low viscosity slick water fracturing fluid''' leads to
-ULW proppant are easy to transport and reduces the damage related to transport.
-Perform sand control treatment by using the composition reduces the fluid loss and improves the wellbore productivity.
