TH10121B - Cement mixtures and methods for use in underground wells - Google Patents

Abstract

DC60 (05/07/43) provides a cement admixture consisting of a hydraulic cement material, iron chloride and water that only Enough to produce pumpable slurry, iron chloride improves morphology and efficiency. Predictable mixtures resulting in a method of cement construction of underground wells By mixing hydraulic cement, iron chloride and sufficient water to form pumpable slurry. Slurry pump to position already selected within the well; and then let the slurry harden inside the well. Provides a cement admixture consisting of a hydraulic cement material, iron chloride and water that only Enough to produce pumpable slurry, iron chloride improves morphology and efficiency. Predictable mixtures resulting in a method of cement construction of underground wells By mixing hydraulic cement, iron chloride and sufficient water to form pumpable slurry: Pump the slurry to the position of already selected within the well; and then let the slurry harden inside the well:

Claims (9)

1. Methods of cement construction of the well consisting of stages of: cementition composition of cement. Hydraulics with alkali Sulphates more than approximately 0.3% by weight of the mixture, water that is sufficient to Causes pumpable slurry (s); And the iron chloride content ranges from approximately 0.1% to approximately 10% by weight of the said cement; Slurry pump into the well; And let the slury harden inside the well 2. Method according to claim 1, which selects such iron chloride from ferrous chloride, ferric chloride or a mixture of that substance. 3. Method for claim 1, where the cement is Portland cement. 4. Method according to claim 1, in which the aforementioned iron chloride content ranges from approximately 0.5% to approximately 2% by weight of the cement in the mixture. 5. Method according to claim 1, where such water ranges from approximately 20% to approximately 150% by weight of the cement in the mixture. 6. Method according to claim 1, the said cement contains alkali. Sulfate approximately 0.5% by weight of the substance. 7. Method according to claim 1, the said cement contains alkali. Sulfate is approximately 1.0% greater by weight of the substance. 8. Method according to claim 1, which the cement contains alkali. Sulfate is approximately 1.5% greater by weight of the substance. 9. Methods of cement construction of the well consisting of stages: formation of cement-based mixtures containing alkali-containing portland cement. Sulfate approximately 0.3% by weight of the mixture; Sufficient water to produce a pumpable slurry; And iron chloride salts from ferrous chloride, ferric chloride, or a mixture of that substance containing Volumes range from approximately 0.1% to approximately 10% by weight of such cement; Slurry pump into the well; And let Slery harden in the well 1 0. The method according to claim 9, in which the aforementioned iron chloride content ranges from approximately 0.5% to approximately 2% by weight of cement in Mixture 1. 1. Method according to claim 9, where such water ranges from approximately 20% to approximately 150% by weight of cement in Mixture 1. 2. Method according to Clause 9 in which the cement contains alkali. Sulfate approximately 0.5% by weight of the substance 1 3. Method according to Clause 9, the said cement contains alkali. Sulfate approximately 1.0% by weight of the substance 1 4. Method according to Clause 9 in which the cement contains alkali. Sulfate approximately 1.5% by weight of the substance 1 5. Methods of cement construction of the well consisting of stages: generation of cement-based mixtures containing hydraulic cement containing approximately 0.3% more alkali sulfate by weight of The mixture; Contains water in the range from approximately 20% to approximately 150% by weight of the cement in the mixtures; And select iron chloride from ferrous chloride, ferric chloride or a mixture of that material whose content ranges from approximately 0.1% to approximately 10% by weight of the said cement; Slurry pump into the well; And let Slery harden inside Drill 1 6. Method according to claim 15, in which the aforementioned iron chloride content ranges from approximately 0.5% to approximately 2% by weight of cement in Mixture 1. 7.Method for claim 15, where cement is Portland Cement 1. 8. Method according to claim 15, in which the cement contains alkali. Sulfate approximately 0.5% by weight of the substance 1 9. Method according to claim 15, in which the cement contains alkali. Sulfate is approximately 1.0% greater by weight of that substance, 2. 0. Method according to Clause 15, which the cement contains alkali. Sulfate is approximately 1.5% greater by weight of the substance.