Research On Anti-collapse Of The Drilling Fluid Technology Of Daqing Horizontal Well

It is a very important factor to keep the well bore stability.The drilling fluidsanti-sloughing and inhibitor good capability has been one of the most important mark ofsuperior drilling fluid and has become one of the hot issues both in and out the well drillingfield.According to anti-collapse drilling fluid and inhibitor in the prevention of the formation,well bore instability of the mechanism and control methods and the classification ofinstability rock stratum analysis.The article tells the classification of drilling fluid andinhibition and the evaluation of the mechanism and laboratory test. The article else tells thetechnology research and development trends of the collapse of domestic and internationalanti-sloughing drilling fluid and inhibitor.Optimized in this article to reduce the interfacial tension of silicone surfactant, evaluatedthe damage to the low permeability core of silicon cationic drilling accession to the reservoirprotection agent, and its rheological properties superior to the poly silicon fluoride drillingfluid system and the fluid system is a good anti-collapse of the drilling fluid, capable ofstrong inhibition of mudstone hydration. Indoor developed drilling fluid formulations anddrilling fluid treatment process through the pro-leading scene test. The performance is goodto achieve the desired test purposes. The development of silicon-based cationic polymerdrilling fluid did not reach the level of protection of oil-based drilling fluid reservoir, butcompared to ordinary water based drilling fluids have been greatly improved.