Instant type strong coating inhibitor for drilling fluid and preparation method thereof

Abstract

The invention relates to the technical field of inhibitors used for oil field drilling production, and discloses an instant strong coating inhibitor for a drilling fluid and a preparation method of the strong coating inhibitor. The instant strong coating inhibitor for the drilling fluid comprises the following raw materials in parts by weight: a monomer A, a solvent A, a surfactant A, a monomer B, a solvent B, a surfactant B, a conditioning agent and an initiator. The preparation method disclosed by the invention is simple; the instant strong coating inhibitor for the drilling fluid, prepared through the preparation method, has stable properties, is high in solution rate, can effectively reduce labor hour, reduces loss and energy burden, can coat the drill core better, can avoid formation collapse accidents, has the strong inhibitive ability, can effectively prevent rock debris from hydration and expansion, prevents accidents, such as jamming of a drilling tool and bit balling from occurring, realizes excellent lubrication effect, facilitates efficient drilling, effectively reduces the filter loss of slurry, is superior to similar products in salt resistance, facilitates rapid forming of mud cakes, prevents hydrocarbon reservoir from being damaged, and facilitates simpler and more convenient field application and after-treatment.

Description

technical field [0001] The invention relates to the technical field of inhibitors in oilfield drilling production, and relates to an instant strong coating inhibitor for drilling fluid and a preparation method thereof. Background technique [0002] With the continuous expansion and deepening of oil exploration and development, deep wells and ultra-deep wells continue to emerge. Development wells generally adopt a simplified wellbore structure with long openhole sections. How to solve the problems of wellbore stability in the long open-hole section and serious jamming during tripping in the upper formation is becoming more and more important to us. With the increasing difficulty of development and continuous increase in input costs, the requirements for drilling fluid additives will be more stringent, mainly in the following aspects: first, technological progress to meet increasingly difficult requirements; Adapt to the needs of the current oil price system. At present, th...

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Problems solved by technology

[0003] The present invention provides an instant type strong coating inhibitor for drilling fluid and a preparation method thereof, which overcomes the above-mentioned deficiencies in the prior art and can effectively solve the current Coated inhibitors have problems of loss and energy burden, unstable performance, and complex application and post-processing on site