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Method for manufacturing anti-friction silicon-based collapse prevention well drilling liquid

A drilling fluid and silicon-based technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of narrow application range and weak anti-slump ability of water-based drilling fluid, so as to enhance the ability of calcium pollution and prevent downhole The occurrence of accidents is complicated and the effect of easy maintenance

Inactive Publication Date: 2015-10-07
CHENGDU GAOPU PETROLEUM ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of weak anti-slump ability and narrow application range of water-based drilling fluid in the prior art, and provide a kind of anti-slump ability with strong anti-slump ability, long stability period, strong temperature resistance ability, large solid phase capacity and wide application range. Preparation method of wide friction-reducing silicon-based anti-slump drilling fluid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of friction-reducing silicon-based anti-slump drilling fluid, comprising the following steps:

[0031] 1) First heat the water to 80°C, then add sodium-based bentonite to the warm water and mix, stir evenly at a stirring speed of 600-800rpm, then adjust the rotating speed to 3000-4000rpm, add sodium carbonate, and stir for 30-60 minutes , then stirred at a stirring speed of 9000-10000rpm for 30-40 minutes, and kept at room temperature for at least 24 hours;

[0032] 2) At a stirring speed of 6000-8000rpm, add the silicone stabilizer for drilling fluid, the silicone diluent and the silicone rot potassium in sequence, and mix and stir for 30-60 minutes;

[0033] 3) Adjust the stirring speed to 4000-6000rpm, first add the coating agent for drilling fluid and the fluid loss reducer for drilling fluid and mix evenly; then add the plugging agent for drilling fluid, low fluorescence water-based lubricant RY-838 and low Fluorescent sulfonated asphalt, mixe...

Embodiment 2

[0042] The difference between this embodiment and embodiment 1 is only that the parts by weight of the components are different, and the specific settings are as follows:

[0043] As another preferred arrangement, the present invention includes the following components in parts by weight:

[0044] Sodium bentonite, 4 parts; Sodium carbonate, 0.1 part; Organosilicon stabilizer for drilling fluid, 2 parts; Silicone diluent, 3 parts; Organic silicon rot potassium, 5 parts; Fluid loss reducer for drilling fluid, 1.5 parts; plugging agent for drilling fluid, 2 parts; low-fluorescence water-based lubricant RY-838, 5 parts; low-fluorescence sulfonated asphalt, 2 parts; prepared by water and weighting agent, Make the density of drilling fluid reach 1.32g / cm 3 .

Embodiment 3

[0046] The difference between this embodiment and embodiment 1 is that the density of the drilling fluid is different, and the density of the drilling fluid in the present embodiment is 1.38g / cm 3 .

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Abstract

The invention discloses a method for manufacturing anti-friction silicon-based collision prevention well drilling liquid. The method includes heating water until the temperature of the water reaches 80 DEG C, adding sodium bentonite into the water at the rotational speed of 600-800rpm, uniformly mixing the sodium bentonite and the water with each other at the rotational speed of 600-800rpm to obtain first mixtures, adjusting the rotational speed until the rotational speed reaches 3000-4000rpm, adding sodium carbonate into the first mixtures, stirring the sodium carbonate and the first mixtures for 30-60min, then stirring the sodium carbonate and the first mixtures at the stirring speed of 9000-10000rpm for 30-40min to obtain second mixtures, and maintaining the second mixtures; sequentially adding organic silicon stabilizers for well drilling liquid, organic silicon diluents and organic silicon potassium humate into the second mixtures at the stirring speed of 6000-8000rpm and stirring the organic silicon stabilizers for the well drilling liquid, the organic silicon diluents, the organic silicon potassium humate and the second mixtures at the stirring speed of 6000-8000rpm for 30-60min to obtain third mixtures; adding encapsulating agents for the well drilling liquid and filtrate-loss reducers for the well drilling liquid into the third mixtures; adding blocking agents for the well drilling fluid, low-fluorescence water-based lubricants RY-838 and low-fluorescence sulfonated bitumen into the third mixtures and uniformly mixing the blocking agents for the well drilling fluid, the low-fluorescence water-based lubricants RY-838, the low-fluorescence sulfonated bitumen and the third mixtures with one another to obtain fourth mixtures; regulating pH (potential of hydrogen) values of the fourth mixtures; regulating the density of the fourth mixtures. The method has the advantages of high collapse prevention capacity, wide application range, capability of prolonging stability periods and the like.

Description

technical field [0001] The invention relates to an anti-slump drilling fluid, in particular to a preparation method of a friction-reducing silicon-based anti-slump drilling fluid. Background technique [0002] Drilling fluid is the circulating flushing medium used in the hole during the drilling process. Drilling fluid is the blood of drilling, also known as drilling flushing fluid. Its main functions include cleaning the borehole, stabilizing the borehole wall, cooling the drill bit, balancing formation pressure, and lubricating the drill string and drill bit. [0003] Drilling fluid can be divided into clear water, mud, clay-free flushing fluid, emulsion, foam and compressed air according to its composition. Clear water is the earliest drilling fluid, it does not need to be treated, it is easy to use, and it is suitable for areas with complete rock formations and sufficient water sources. Mud is a widely used drilling fluid. It is mainly suitable for unstable rock forma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/24C09K8/22
CPCC09K8/22C09K8/24C09K2208/12C09K2208/28C09K2208/34
Inventor 周斌
Owner CHENGDU GAOPU PETROLEUM ENG TECH
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