TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Method: The method (M1) further involves: applying the formation protective material to an interior surface of earth at the permeable treatment zone to selectively locate a fracture in it; hydraulically fracturing the formation; hydraulically fracturing the formation where a fluid in each of several fluid injection stages comprises the saline treatment fluid; creating a fracture in the earth formation, where the fracture has an interior surface with fracture faces; applying to the fracture faces the formation protective material; injecting into the fracture a formation etching agent; and where the formation etching agent etches fracture faces of the fracture so as to form a flow channel in the formation. The fluid protective material is present as on of: 32-35 wt.%, and 40 wt.%. The contacting a permeable treatment zone is part of an operation that is one of an operation that is: drilling, injection, fracturing, testing, workover, completion, flushing, and treating.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The treatment fluid is a saline treatment fluid. The second fluid entering the treatment zone comprises an aqueous phase free of the clay stabilizer. The saline treatment fluid comprises the clay stabilizer in an amount of 0.1-10 wt.%. The saline treatment fluid comprises one of: a carrier for the gravel for gravel packing, prepad, and preflush in an operation to treat the formation. The formation protective material (FPM) is present in an amount of ratio of FPM to other material is 0.1-1000; ratio of 0.1-1000 gallons; a ratio of 0.1-0.5 FPM to 1000 other material; in certain aspects, a ratio of 0.1-0.5 gallons FPM to 1000 gallons other material; ratio of 1:1000; ratio of 1 gallon of FPMs to 1000 gallons of other material a ratio of 0.1-2 of FPM to 1000 of other material; in a ratio of 0.1-2 gallons of FPM to 1000 gallons of other material; ratio of 0.25-0.50 FPM to 1000 other material; ratio of 0.25-0.50 gallons FPM to 1000 gallons other material; 0.01 g/l of fluid (0.1 lb/1000 gal of fluid (ppt)) to less than 7.2 g/l (60 ppt), 0.018-4.8 g/l (1.5-40 ppt), 0.018-4.2 g/l (1.5-35 ppt), 0.018-3 g/l (1.5-25 ppt), 0.24-1.2 g/l, 2-10 ppt, of 0.01-0.4 wt.% of a fluid, from 0.025-0.2 wt.% of a fluid, at a rate of any lower limit selected from 0.0001, 0.001, 0.01, 0.025, 0.05, 0.1, or 0.2 wt.%, up to any higher upper limit selected from 1.0, 0.5, 0.4, 0.25, 0.2, 0.15 or 0.1 wt.%; and FPM of 1-10 vol.%. The formation protective material is 10-60 wt.% of the treatment fluid, weight percent being by weight of material in water for each gallon of fluid. The formation protective material is in fluid pumped into an earth formation and is present as between 0.1-2 gallons for each 1000 total gallons of fluid pumped into the earth formation. The treatment fluid is one of: workover fluid, fracturing fluid, flushing fluid, slickwater fluid, water-based fluids, drilling mud, cements, completion fluid, slurry, injection fluid, matrix treatment fluid, hydraulic fracturing fluid, stimulation fluid, isolation fluid, drill-in fluid, water-base fluid, pneumatic fluid, non-water-base fluid, remediation fluid, suspension, emulsion, fluid with proppants, and/or brine. The treatment fluid is a fracturing fluid that is one of: aqueous solution, gelled aqueous solution, aqueous acid solution, gelled aqueous acid solution, aqueous emulsion, and aqueous acid containing emulsion. The formation etching agent is selected from: mineral acids and their mixtures, organic acids and their mixtures, mineral acids and mixtures of mineral acids mixed with gelling agent, organic acids and mixtures of organic acids mixed with gelling agent, water soluble hydroxides and mixtures of water soluble hydroxides, water soluble hydroxides and mixtures of water soluble hydroxides mixed with gelling agent hydrochloric acid, hydrofluoric acid, hydrochloric and hydrofluoric acid mixtures, hydrochloric acid mixed with gelling agent, hydrofluoric acid mixed with gelling agent, acetic acid, formic acid, acetic acid mixed with gelling agent, formic acid mixed with gelling agent, citric acid, alkali metal hydroxides and mixtures of alkali metal hydroxides, alkaline earth metal hydroxides and mixtures of alkaline earth metal hydroxides, lime and mixtures of lime with other basic metal oxides and hydroxides, alkali metal hydroxides and mixtures of alkali metal hydroxides mixed with gelling agent, alkaline earth metal hydroxides and mixtures of alkaline earth metal hydroxides mixed with gelling agent, lime and mixtures of lime with other basic metal oxides and hydroxides and gelling agent. The formation protective material is miscible with the formation etching agent.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The clay stabilizer is a poly(oxyalkylene) polyamine. EXAMPLE - No suitable example given.