32results about How to "Increased generation suppression" patented technology

The invention discloses frozen-soil hydrate deposit polyvinyl alcohol type drilling fluid, and relates to the field of natural gas hydrate exploitation. The drilling fluid is prepared from the following components: polyvinyl alcohol, sodium chloride, methyl alcohol, ethylene glycol, sulfonated phenolic resin SMP-2, potassium humate, xanthan gum, polyvinylpyrrolidone K30, polyoxyethylene and prepared water. The frozen-soil hydrate storage polyvinyl alcohol type drilling fluid can be used for frozen-soil-layer natural gas hydrate deposit drilling, and has the effects of no solid phase and low temperature resistance; a kinetic inhibitor and a synergist are added into the drilling fluid for compounding, so that relatively strong hydrate generation inhibition effect is achieved; and moreover, the drilling fluid is small in environmental harm by components, and has the advantages of being efficient, environmentally friendly, adopting cheap and easily available raw materials, and the like.

The invention discloses a natural gas hydrate storage compound drilling fluid for a frozen earth region and relates to the field of exploration of natural gas hydrate. The drilling fluid comprises thefollowing components: polyethylene glycol, sodium chloride, ethylene glycol, low viscosity carboxymethylcellulose LV-CMC, potassium polyacrylate, xanthan gum, polyvinyl caprolactam, butyl cellosolve,tetracaproyl trimethyl ammonium bromide and prepared water. The drilling fluid can be used for drilling the natural gas hydrate storage drilling of a frozen layer, and plays roles of being free of solid phases and low-temperature resistant. By adding a dynamic inhibitor into the drilling fluid to be compounded with a synergist, the drilling fluid has a relatively high hydrate generation inhibiting effect, and the components of the drilling fluid are small in environmental damage, so that the drilling fluid has the advantages of high efficiency, environmental protection, low cost of raw materials, easily available materials and the like.

The invention discloses a compound drilling fluid for natural gas hydrate (NGH) reservoir in a muddy siltstone stratum, and relates to the field of NGH exploitation. The drilling fluid comprises following components: sodium silicate, sodium chloride, glycol, potassium chloride, low viscosity carboxymethyl cellulose (LV-CMC), potassium polyacrylate, xanthan gum, polyvinyl caprolactam, ethylene glycol butyl ether, tetra-n-hexyl trimethyl ammonium bromide, and make-up water. The drilling fluid is suitable for NGH drill wells in muddy siltstone stratum reservoir, is resistant to low temperature, and can inhibit and reduce the solid phase. The drilling fluid is compounded with a kinetic inhibitor and a synergist to inhibit the generation of hydrates. Moreover, the components of the drilling fluid are basically harmless to the environment, and the drilling fluid has the advantages that the efficiency is high, the environment is protected, and the raw materials are cheap and easily available.

The invention discloses compound marine natural gas reservoir drilling fluid, and relates to the field of natural gas hydrate mining. The drilling fluid is prepared from the following components: sodium silicate, sodium chloride, ethylene glycol, potassium polyacrylate, low-viscosity polyanionic cellulose (LV-PAC), xanthan gum, polyvinylpyrrolidone K90, polyethylene oxide, mono-n-butyl glycol ether and prepared water, can be applied to drilling of natural gas hydrate reservoirs, and has the characteristics of no solid phase and low temperature resistance; a kinetic inhibitor and a synergist are added into the drilling fluid for compounding, so that the drilling fluid has a better hydrate generation inhibition effect; moreover, the drilling fluid components have little harm to the environment, so that the drilling fluid has the advantages of high efficiency, environmental friendliness, cheap and readily-available raw materials and the like.

The invention discloses drilling fluid suitable for a marine natural gas hydrate reservoir, and relates to the field of mining of natural gas hydrate. The drilling fluid is prepared from the followingcomponents: sodium formate, sodium chloride, methanol, ethylene glycol, potassium chloride, low-viscosity carboxymethyl cellulose LV-CMC, potassium humate, xanthan gum, polyvinylpyrrolidone K30, polyvinyl methyl ether and prepared water. The drilling fluid disclosed by the invention can be used for drilling the marine natural gas hydrate reservoir and has solid-free and low temperature-resistantfunctions, the drilling fluid has a stronger hydrate generation inhibiting effect through adding a kinetic inhibitor and a synergist for compounding, components of the drilling fluid have small harm to environment, and the drilling fluid has the advantages that the efficiency is high, environmental protection is realized, raw materials are low in cost and easy to obtain, and the like.

The invention discloses a drilling fluid for natural gas hydrate (NGH) reservoir in a frozen soil layer, and relates to the field of NGH exploitation. The drilling fluid comprises following components: polyethylene glycol, sodium chloride, glycol, potassium humate, xanthan gum, polyvinylpyrrolidone K90, propylene glycol monomethyl ether, mono-n-butyl glycol ether, and make-up water. The drilling fluid is suitable for drill wells in NGH reservoir in a frozen soil layer, does not contain any solid phase, and is resistant to low temperature. The drilling fluid is compounded with a kinetic inhibitor and a synergist to inhibit the generation of hydrates. Moreover, the components of the drilling fluid are basically harmless to the environment, and the drilling fluid has the advantages that the efficiency is high, the environment is protected, and the raw materials are cheap and easily available.

The invention discloses a polyvinyl alcohol compound drilling fluid for natural gas hydrate (NGH) reservoir in a frozen soil area, and relates to the field of NGH exploitation. The drilling fluid comprises following components: polyvinyl alcohol, sodium chloride, methanol, glycol, sulfonated phenolic resin (SMP-2), potassium humate, xanthan gum, polyvinylpyrrolidone K-90, propylene glycol phenyl ether, polyvinyl methyl ether, and make-up water. The drilling fluid is suitable for NGH drill wells in a frozen soil layer, does not contain any solid phase, and is resistant to low temperature. The drilling fluid is compounded with a kinetic inhibitor and a synergist to inhibit the generation of hydrates. Moreover, the components of the drilling fluid are basically harmless to the environment, and the drilling fluid has the advantages that the efficiency is high, the environment is protected, and the raw materials are cheap and easily available.

The invention provides compound polyvinyl alcohol drilling fluid applied to storage of hydrates in frozen soil layers and relates to the field of exploitation of natural gas hydrates. The drilling fluid comprises the following components: polyvinyl alcohol, sodium chloride, ethylene glycol, sulfonated phenolic resin SMP-2, potassium polyacrylate, xanthan gum, polyvinyl caprolactam, ethylene glycoldiethyl ether, tetrahexamethyltrimethyl ammonium bromide and prepared water. The drilling fluid is capable of being applied to drilling with storage of the natural gas hydrates in the frozen soil layers, is free of solid phase and has resistance to low temperature; a kinetic inhibitor is added into the drilling fluid and is compounded with a synergist; the drilling fluid has an excellent effect of inhibiting generation of hydrates; meanwhile, the components of the drilling fluid are low in harm to the environment; and the drilling fluid has the advantages of high efficiency, environment friendliness and cheap and easily available raw materials.

The invention discloses marine hydrate storage polyvinyl alcohol type drilling fluid and relates to the field of natural gas hydrate production. The drilling fluid is prepared from the following components including polyvinyl alcohol, sodium chloride, methanol, potassium chloride, ethylene glycol, sulfonated phenolic resin SMP-2, potassium humate, xanthan gum, polyvinylpyrrolidone K30, polyvinyl methyl ether and prepared water. The drilling fluid can be used for marine natural gas hydrate storage drilling, has the effects of no solid phase and low temperature resistance, has stronger hydrate generation inhibition effect by adding a kinetic inhibitor for compounding with a synergist and has the advantages of high efficiency, environmental protection, cheapness and availability in raw materials and the like as the components of the drilling fluid are small in environmental harm.

The invention discloses marine facies natural gas hydrate storage compound drilling fluid and relates to the field of exploitation of natural gas hydrate. The drilling fluid is prepared from the following components: sodium formate, sodium chloride, methyl alcohol, ethylene glycol, potassium chloride, low viscosity carboxymethyl cellulose (LV-CMC), potassium humate, xanthan gum, polyvinyl caprolactam, propylene glycol phenyl ether, tetrahexamethyltrimethylammonium bromide and prepared water; the drilling fluid can be used for marine facies natural gas hydrate storage drilling and has the effects of no solid phase and low temperature resistance. By adding a kinetic inhibitor and a synergist for compounding, the drilling fluid has a stronger hydrate formation inhibition effect; in addition,the drilling fluid components have little damage to the environment; the drilling fluid has the advantages of high efficiency, environment friendliness, low-priced and easily-obtained raw materials and the like.

The invention relates to a compound drilling fluid for natural gas hydrate (NGH) reservoir in silt mudstone, and relates to the field of NGH exploitation. The drilling fluid comprises following components: polyethylene glycol, sodium chloride, glycol, potassium chloride, low viscosity carboxymethyl cellulose (LV-CMC), potassium polyacrylate, xanthan gum, polyvinylpyrrolidone K90, polyvinyl methylether, and make-up water. The drilling fluid is suitable for NGH drill wells in silt mudstone reservoir, is resistant to low temperature, and can inhibit and reduce the solid phase. The drilling fluidis compounded with a kinetic inhibitor and a synergist to inhibit the generation of hydrates. Moreover, the components of the drilling fluid are basically harmless to the environment, and the drilling fluid has the advantages that the efficiency is high, the environment is protected, and the raw materials are cheap and easily available.

The invention discloses a drilling fluid for marine natural gas hydrate (NGH) reservoir, and relates to the field of NGH exploitation. The drilling fluid comprises following components: sodium silicate, sodium chloride, glycol, potassium humate, potassium polyacrylate, xanthan gum, polyvinylpyrrolidone K90, propylene glycol monomethyl ether, mono-n-butyl glycol ether, and make-up water. The drilling fluid is suitable for NGH drill wells in the sea, does not contain any solid phase, and is resistant to low temperature. The drilling fluid is compounded with a kinetic inhibitor and a synergist toinhibit the generation of hydrates. Moreover, the components of the drilling fluid are basically harmless to the environment, and the drilling fluid has the advantages that the efficiency is high, the environment is protected, and the raw materials are cheap and easily available.

The invention provides compound type frozen soil natural gas hydrate reservoir drilling fluid and relates to the field of exploitation of natural gas hydrate. The drilling fluid is prepared from the following components: sodium silicate, sodium chloride, ethylene glycol, potassium humate, potassium polyacrylate, xanthan gum, polyvinylpyrrolidone K90, ethylene glycol ethyl ether, mono-n-butyl ethylene glycol ether and preparation water; the drilling fluid can be used for drilling the frozen soil layer natural gas hydrate reservoir and has solid-phase-free and low-temperature-resisting effects;a kinetic inhibitor and a synergist are added into the drilling fluid and are compounded so that the drilling fluid has a relatively strong hydrate generation inhibition effect; the components of thedrilling fluid have small dangers to environment and the drilling fluid has the advantages of high efficiency, environment protection, low-price and easy-to-obtain raw materials and the like.

The invention discloses compound polyvinyl alcohol drilling fluid for marine hydrate reservoirs, and relates to the field of natural gas hydrate mining. The drilling fluid is prepared from the following components: polyvinyl alcohol, sodium chloride, methyl alcohol, ethylene glycol, sulfonated phenolic resin SMP-2, potassium humate, xanthan gum, polyvinyl caprolactam, polyvinyl methyl ether, tetra-n-hexyltrimethyl ammonium bromide and prepared water, can be applied to drilling of submarine natural gas hydrate reservoirs, and has the characteristics of freeness from solid phase and low temperature resistance; a kinetic inhibitor and a synergist are added into the drilling fluid for compounding, so that the drilling fluid has a better hydrate generation inhibition effect; moreover, the drilling fluid components have little harm to the environment, so that the drilling fluid has the advantages of high efficiency, environmental friendliness, cheap and readily-available raw materials and the like.

The invention discloses marine hydrate storage polyvinyl alcohol compound drilling fluid and relates to the field of natural gas hydrate production. The drilling fluid is prepared from the following components including polyvinyl alcohol, sodium chloride, potassium chloride, ethylene glycol, sulfonated phenolic resin SMP-2, potassium polyacrylate, xanthan gum, polyvinylpyrrolidone K90, glycol ether, mono-n-butyl glycol ether and prepared water. The drilling fluid can be used for marine natural gas hydrate storage drilling, has the effects of no solid phase and low temperature resistance, has stronger hydrate generation inhibition effect by adding a kinetic inhibitor for compounding with a synergist and has the advantages of high efficiency, environmental protection, cheapness and availability in raw materials and the like as the components of the drilling fluid are small in environmental harm.

The invention provides drilling fluid applicable to seabed natural gas hydrate storage and relates to the field of exploitation of natural gas hydrate. The drilling fluid provided by the invention isprepared from the following components: polyethylene glycol, sodium chloride, ethylene glycol, potassium chloride, potassium humate, xanthan gum, polyvinylpyrrolidone K90, propylene glycol monomethylether, polyvinyl methyl ether and preparation water; the drilling fluid can be used for carrying out seabed natural gas hydrate storage drilling and has solid-phase-free and low-temperature-resistingeffects; a kinetic inhibitor and a synergist are added into the drilling fluid and are compounded so that the drilling fluid has a relatively strong hydrate generation inhibition effect; the components of the drilling fluid have small dangers to environment and the drilling fluid has the advantages of high efficiency, environmental protection, low price and easiness for obtaining the raw materialsand the like.

The invention discloses silty mudstone natural gas hydrate ground-layer compound type drilling fluid, and relates to the field of natural gas hydrate exploitation. The drilling fluid is prepared fromthe following components: polyethylene glycol, sodium chloride, potassium chloride, potassium humate, potassium polyacrylate, xanthan gum, polyvinyl caprolactam, propylene glycol monomethyl ether, tetrahexyltrimethyl ammonium bromide and prepared water. The silty mudstone natural gas hydrate ground-layer compound type drilling fluid can be used for silty mudstone natural gas hydrate storing and drilling, has the effects of resisting a low temperature, inhibiting and reducing the solid phase; a kinetic inhibitor and a synergist are added into the drilling fluid for compounding, so that relatively strong hydrate generation inhibition effect is achieved; and moreover, the drilling fluid is small in environmental harm by components, and has the advantages of being efficient, environmentally friendly, adopting cheap and easily available raw materials, and the like.

The invention discloses a drilling fluid for natural gas hydrate (NGH) reservoir in siltstone, and relates to the field of NGH exploitation. The drilling fluid comprises following components: sodium formate, sodium chloride, glycol, potassium chloride, low viscosity carboxymethyl cellulose (LV-CMC), potassium polyacrylate, xanthan gum, polyvinylpyrrolidone K90, propylene glycol monomethyl ether, polyvinyl methyl ether, and make-up water. The drilling fluid is suitable for NGH drill wells in siltstone, is resistant to low temperature, and can inhibit and reduce the solid phase. The drilling fluid is compounded with a kinetic inhibitor and a synergist to inhibit the generation of hydrates. Moreover, the components of the drilling fluid are basically harmless to the environment, and the drilling fluid has the advantages that the efficiency is high, the environment is protected, and the raw materials are cheap and easily available.