1results about How to "Has a thickening effect" patented technology

This invention belongs to the field of petroleum extraction technology, specifically relating to a high-temperature, high-pressure kill fluid, its preparation method, and its application. The composition and mass fraction (total 100 parts) of the kill fluid are as follows: potassium formate 10-40 parts; barium sulfate 1-3 parts; polyacrylamide 0.05-0.1 parts; amphoteric guar gum 2-5 parts; the remainder is tap water; the molecular structure of the amphoteric guar gum is as follows: [Insert molecular structure formula here]. The kill fluid of this invention has the advantages of adjustable density, low corrosion rate, low API water loss, good anti-swelling effect, and low formation damage.