The invention discloses a
polymer saturated
salt water drilling solution suitable for drilling a gas storage warehouse. The
polymer saturated
salt water drilling solution is prepared from brine glue solution and
bentonite slurry with
mass percentage concentration of 4% according to a
mass ratio of 1:1, wherein the brine glue solution comprises the following components in parts by
mass: 100 parts of brine, 0.3-0.35 part of drilling solution
coating agent, 1.5-1.7 parts of sulfonated phenolic resin, 1-1.05 parts of high-
viscosity sodium carboxymethylcellulose, 1.0-1.10 parts of compound salt resisting
filtration loss
reducing agent, 1.5-1.6 parts of drilling solution collapse-proof dilute
filtration loss
reducing agent SN (
Sulfanilamide) resin, 1.0-1.05 parts of sulfonated bitumen, 0.3-0.4 part of
sodium carbonate, 0.4-0.45 part of caustic soda and
solid industrial salt NaCl which is added till the brine glue solution is saturated. Through the
polymer saturated
salt water drilling solution suitable for drilling the gas storage warehouse, the
pollution problem of the upper stratum
slurry and the lower
calcium mudstone can be well controlled; and the polymer saturated salt water drilling solution is capable of effectively preventing the collapse of the stratum under the casing
pipe shoe and has good effects of controlling
dissolution of the salt layer and preventing
creep deformation of the slat layer.