Tackifying chip-taking bar for drilling fluid and preparation method

Abstract

The invention relates to a tackifying chip-taking bar for drilling fluid and a preparation method. The tackifying chip-taking bar for drilling fluid is prepared by taking the following components by weight part: 120 parts of raw oil, 30 parts of water, 15 parts of alkali, and 30-60 parts of instant tackifier. The prepared tackifying chip-taking bar is of hollow bar shape. The invention has the beneficial effects that (1) the tackifying chip-taking bar provided by the invention has excellent tackifying effect and can obviously increase the chip-taking capacity of the drilling fluid of straight well and small-slope drilling well; (2) when a single bar is connected, the tackifying chip-taking bar provided by the invention can be directly put into a drill pipe and can be scoured and dissolved to form a dense plug for assisting in taking sand following the drilling liquid, the dense pulp is not additionally prepared and the use is convenient; (3) the tackifying chip-taking bar provided by the invention can reduce the solid liquid interface tension, can change the surface adsorption property of the drilling bit and can prevent the drilling bit or drilling tool from being coated with mud.

Description

technical field [0001] The invention relates to a drilling fluid, in particular to a viscosity-increasing chip-carrying rod for drilling fluid and a preparation method thereof. Background technique [0002] The research on drilling fluid wellbore cleaning technology includes many aspects such as wellbore cleaning and drilling tool cleaning and lubrication. Wellbore cleaning is one of the key factors determining the success of drilling operations. A lot of on-site experience shows that the issue of wellbore purification must be given great attention, otherwise various complex situations will easily occur, which will seriously affect the drilling safety and drilling effect, and make various operations during the drilling process unable to proceed normally. Therefore, it is necessary to further strengthen the research on drilling fluid cleaning, improve the comprehensive performance index of drilling fluid, form a matching wellbore cleaning drilling fluid system, improve the ex...

AI Technical Summary

Problems solved by technology

[0003] In the process of drilling vertical wells or near-vertical wells, bit balls are prone to occur, and with the increase of well depth, it is difficult to bring out large pieces. Once drill bit balls occur, they can only be removed manually by pulling out the drill, which seriously affects the drilling speed; and the drilling fluid When the sand-carrying effect is not good, the method of adding thick slurry to push the plug is generally adopted, but this method needs to stop the pump to mix the slurry or need an additional thick slurry tank, and pushing the thick plug for many times will easily lead to the increase of the viscosity of the mud in the whole well and flow Denaturation becomes worse, therefore, the traditional method of pushing thick plugs has multiple limitations

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