Shale gas is one of the most rapidly growing forms of natural gas. Shale is a common type of sedimentary rock for medover centuries from deposits of mud, silt, clayandorganicmatter. As mud turns intos hale near the earth’s surface,bacteria feed on the organic material–also called kerogene–to release biogenic methane as a by product.Several kilometres deeper under ground,greater heat and pressure crack the kerogene (including any oil already produced by that heat and pressure)into smaller hydrocarbons, creating thermogenic methane. Some oil and gas escapes from the shale into more porous conventional reservoirs,but some does not. Shalegas consists mainlyof thermogenic methane and other gases which have been trapped in shale with such low permeability that the gas cannot readily flow into a well.Hydraulic fracturing,or ‘fracking’,isused to increase the permeability of the rocks the shalegas can be released.
Hydraulic fracturing involves drilling a well that reaches intothe stratafrom which the shale gas is to be produced. Controlled charges then perforate holes inappropriate sections of the well, and fracturing fluids are pumped in at high pressure. Fracturing fluids usually consist of water, sand ‘proppant’ and a range of chemicals, such as those contained in slick water to help increase fluidflow,bactericide, gelling agents and surfactants,which reduce the interfacial tension between liquids and solids. The injection of fracturing fluids generates stresses inthe shale that exceed its strength and force open existing fractures as well as creating newones, which are propped open by the sand. Additional fluids are then pumped in to maintain the pressure so fracture development can continue and the sand proppant can be carried deeper into the formation. After fracturing,the well is depressurised to create a gradient so that gas flows out the shale into the well. Fracturing fluid will flows back to the surface at the same time (‘flowbackwater’) and will now also contains a line water from dissolved minerals in the shale formation(‘formationwater’).
Guar Gum Powder Application
With the continual expansion into new applications of Guar Gum Powder, the largest application has been found in the Shale Gas Drilling and Hydraulic Fracturing. Though its properties of being:
- high viscosifier
- hydrates quickly in cold water
- delivers proppant more effectively
- stable at high pressures, heat and pH levels
- environmentally friendly
- 8 times more thickening power then starch
Mayfair Commodities/ Gum Guar UK are UK Stockists and the soles distributors for Shale Gas Drilling and Hydraulic Fracturing Grade Guar Gum for Europe ( Germany, Belgium, Switzerland, Poland) with the largest manufacturer of Guar Gum Polymers and its derivatives in India – Vikas WSP, whom have 3 manufacturing units with the capacity to produce over 30 thousand tonnes of Guar Gum a year.
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