Earth borehole drilling, completion and work-over abandonment chemicals, namely, a water-soluble chemical for providing thixotropic properties and non-newtonian characteristics to waters and brines over a wide salinity range, and which has the ability to suspend solid materials such as bridging agents and weighting materials in aqueous solutions containing said chemical

'abandon':9 'abil':39 'agent':47 'aqueous':52 'borehol':2 'bridg':46 'brine':29 'characterist':25 'chemic':10,16,56 'complet':4 'contain':54 'drill':3 'earth':1 'materi':43,50 'name':11 'newtonian':24 'non':23 'non-newtonian':22 'properti':20 'provid':18 'rang':34 'said':55 'salin':33 'solid':42 'solubl':15 'solut':53 'suspend':41 'thixotrop':19 'water':14,27 'water-solubl':13 'weight':49 'wide':32 'work':7 'work-ov':6

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