Anti-thread-gluing thread grease and using method thereof

Abstract

The invention discloses anti-thread-gluing thread grease which comprises a component A, a component B and a component C. The mass ratio of the component A to the component B to the component C is (0.8-1.1): (1.6-2.2): (3.6-4.2). The component A comprises the following components in percentage by mass: 30%-50% of a polyamide curing agent and 50%-70% of normal hexane; the component B comprises 47%-60% of epoxy resin, 5%-15% of nickel powder, 30%-40% of tungsten disulfide powder, 1%-4% of silicon nitride and 1%-3% of fumed silica; and the component C comprises 30%-50% of titanium-based lubricating grease, 3%-7% of microcrystalline graphite, 7%-13% of silicon carbide whiskers, 15%-23% of graphite powder, 13%-18% of polytetrafluoroethylene powder, 1%-4% of nickel-titanium alloy and 10%-15% of zinc powder. During use, the component B is firstly brushed on the surface of a thread, then the component A is brushed on the surface of the thread brushed by the component B, a lubricating coating isformed on the surface of the thread through a chemical curing reaction of the two components, the coating has the advantage of strong surface adhesion, and then a layer of oil-based grease lubricating substance is coated on the surface of the lubricating coating so that the advantages that the oil-based grease lubricating material physically blocks a thread leakage gap and spreads on the surfaceof the thread are exerted.

Description

technical field [0001] The invention belongs to the technical field of oil and casing thread grease, and in particular relates to an anti-sticking thread grease and a use method thereof. Background technique [0002] With the continuous development of oil and gas exploration and development, a large number of inclined wells, horizontal wells, extended-reach cluster wells, deep wells and ultra-deep wells, gas storage wells and other relatively harsh working conditions have appeared in oilfield drilling. In the process of well construction, various factors such as complex formation conditions, harsh conditions for new drilling and completion, unsound string design standards, improper selection of casing materials, and unreasonable construction techniques may cause casing damage; Even if the casing meets the strength design requirements, the pipe string may be damaged due to thread leakage, pipe string corrosion or pipe string wear, and may also be damaged due to the various lo...

AI Technical Summary

Problems solved by technology

[0005] Although the currently used oil-based grease thread grease has a certain anti-sticking effect, there are still certain defects and deficiencies. The reason why the existing oil-based grease thread grease plays an anti-sticking effect is that the soft metal contained is Rolling and spreading on the thread surface, but because the formulas of various thread grease manufacturers vary widely, each pipe factory cannot guarantee that the oil-based thread grease can be effectively processed due to differences in processing technology, quality control, and buckle design when processing threads. Spread on the thread surface, some thread grease will be squeezed out of the thread surface with the make-up of the thread due to poor adhesion on the thread surface, which will result in failure to lubricate, and eventually lead to a large amount of sticking of the oil casing thread failure accident

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