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METHOD FOR PREVENTING MANIFESTATIONS IN THE CONSTRUCTION OF OIL AND GAS WELLS

机译:油气井建设中预防措施的方法

摘要

FIELD: oil and gas industry.;SUBSTANCE: invention relates to the oil and gas production industry, namely to technologies for the prevention of the manifestation of formation fluid during the construction of oil and gas wells, in particular to the elimination of overflows in developing formations. Method comprises sequentially injecting a blocking pack and a drilling fluid into the formation. In this case, an emulsion-suspension system containing 5–20 % by weight of diesel fuel or prepared oil from a point of preparation and pumping of oil, 2–3 % by weight of an emulsifier, 0.5–1 % by weight of a colloidal solution of silica nanoparticles having a particle size of 5 to 100 nm, 3–5 % by weight of dry amorphous silica (92–99 %) with a particle size of 5 to 500 nm, 10–15 % by weight of microparticles of ilmenite or trimanganese tetraoxide with a particle size of 0.2 to 5 mcm, an aqueous solution of calcium chloride or potassium chloride is the remainder. In this case, an aqueous solution of calcium chloride or potassium chloride is used as a drilling fluid.;EFFECT: technical result is to increase the technological efficiency of measures to prevent manifestations and eliminate overflows in the formation-well system in developing reservoirs with a high gas factor or abnormally high reservoir pressure, as well as simplification of the method.;5 cl, 6 ex, 4 dwg
机译:技术领域本发明涉及石油和天然气生产行业,即涉及在油气井的建造过程中防止地层流体出现的技术,特别是消除开发中的溢流的技术。编队。该方法包括顺序地将封闭包和钻井液注入地层中。在这种情况下,乳化液-悬浮液系统包含5-20%重量比的柴油或成品油,从制备和泵送油的角度来看,包含2-3%重量的乳化剂,0.5-1%重量的乳化剂。二氧化硅纳米粒子的胶体溶液,粒径为5至100 nm,重量为3-5%的干燥无定形二氧化硅(92-99%),粒径为5至500 nm,重量为微粒的10-15%钛铁矿或四氧化三锰或四氧化三锰的粒径为0.2至5 mcm,其余为氯化钙或氯化钾的水溶液。在这种情况下,使用氯化钙或氯化钾的水溶液作为钻井液。效果:技术成果是提高采取措施以防止形成并消除开发中的储层中地层井系统溢流的措施的技术效率。高气体因数或异常高的油藏压力,以及方法的简化。; 5 cl,6 ex,4 dwg

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