High-efficient instant slurry powder and preparation method thereof

An instant and mud technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of high water loss, high cost, and more labor, so as to reduce water penetration, save economic costs, and reduce water loss. The effect of water volume

Inactive Publication Date: 2017-05-17
CHINA TIESIJU CIVIL ENG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most polymer muds used in domestic drilling have the problems of high water loss, low viscosity, and general wall protection effect, and there are still defects in recycling and use in complex geological conditions.
These are easy to cause more labor, large amount of discarded pulp, and high cost
CN105482789A discloses a method for preparing a new type of drilling mud. The mud prepared by this method contains bentonite, which enhances the water retention and wall protection of the mud. Abandon the traditional bentonite component in the mud preparation, and still can reach the product of same retaining wall effect; Disclose a kind of preparation method of geotechnical drilling engineering polymer type so

Method used

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  • High-efficient instant slurry powder and preparation method thereof

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Effect test

Embodiment 1

[0023] Application engineering: pile construction of a railway project in Shaanxi Province, the construction technology is rotary drilling and drilling, the pile length is about 50 meters, the pile diameter is 1 meter, and the geological conditions are silty sand layer below 20 meters.

[0024] The composition of the high-efficiency instant mud powder is shown in Table 1, and the application performance of the prepared mud is shown in Table 2.

[0025] Table 1 High-efficiency instant mud powder raw material composition (unit: part)

[0026] nonionic polyacrylamide Sodium starch grafted polyacrylate Potassium humate PAC 85 5 5 5

[0027] Table 2 prepared mud application performance

[0028] Viscosity (s) 30 Homogeneity time (h) 120 Sand concentration before the last cycle (%) 0.4 Number of cycles (times) 6 7.5min water loss (ml) 55 The longest wall stabilization time (h) 48

Embodiment 2

[0030] Application project: Pile construction of a railway project in Henan Province, the construction technology is rotary drilling, the pile length is about 50 meters, the pile diameter is 1.2 meters, and the geological condition is that the clay layer is below 10 meters.

[0031] The composition of the high-efficiency instant mud powder is shown in Table 3, and the application performance of the prepared mud is shown in Table 4.

[0032] Table 3 High-efficiency instant mud powder raw material composition (unit: part)

[0033]

[0034] Table 4 prepared mud application properties

[0035] Viscosity (s) 21 Homogeneity time (h) 118 Sand concentration before the last cycle (%) 0.4 Number of cycles (times) 7 7.5min water loss (ml) 50 The longest wall stabilization time (h) 45

Embodiment 3

[0037] Application project: Pile construction of a railway project in Hunan Province, the construction technology is rotary drilling, the pile length is about 60 meters, the pile diameter is 1 meter, and the geological conditions are water-sensitive geology.

[0038] The composition of the high-efficiency instant mud powder is shown in Table 5, and the application performance of the prepared mud is shown in Table 6.

[0039] Table 5 The composition of high-efficiency instant mud powder raw materials (unit: part)

[0040] nonionic polyacrylamide polyethylene oxide Hydroxypropyl Cellulose Potassium humate PAC 30 40 15 5 15

[0041] Table 6 prepared mud application performance

[0042] Viscosity (s) 26 Homogeneity time (h) 115 Sand concentration before the last cycle (%) 0.5 Number of cycles (times) 8 7.5min water loss (ml) 30 The longest wall stabilization time (h) 42

[0043] It can be seen from Tables 2, 4 and ...

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Abstract

The invention discloses a high-efficient instant slurry powder and a preparation method thereof; the high-efficient instant slurry powder is prepared from, by weight, 70-85 parts of tackifier, 10 parts of filtrate reducer and 5-15 parts of sediment accelerating agent; the tackifier can completely dissolve within a short time, and reach high viscosity under the condition of low mixing amount, thus the slurry wiredrawing state is good; the filtrate reducer can lighten the water penetration effect, obviously reduce the water loss of the slurry, and play very good stabilizing function of peripheral stratum; the sediment accelerating agent can remove sand and purify the slurry, so as to avoid secondary hole cleaning, control the sand content in the slurry, and reduce the wear of a drill bit by too much gravels; the recycling time of slurry is improved to 8 times, thus the economic cost is saved; the high-efficient instant slurry powder can be widely applied to powder sand layer, clay layer, water-sensitive stratum and other multiple geological conditions; the high-efficient instant slurry powder can protect the well wall for 48 hours without collapse in use.

Description

technical field [0001] The invention relates to a pile foundation wall protection mud material, in particular to a high-efficiency instant mud powder and a preparation method thereof. Background technique [0002] In the ever-growing infrastructure construction such as railways and subways, in order to ensure high-quality and low-risk construction of a large number of new projects, rotary drilling construction technology is widely used due to its technical advantages such as high construction safety, low environmental impact and high construction quality. use. During the construction of rotary drilling rigs, static mud protection walls are generally used, and most of them are made of bentonite or a single thickening component. At the technical level, there are many manual labor required for mud preparation, and the amount of discarded slurry is large. If the discarded slurry is not treated, it will easily cause secondary pollution. , The cost of discarded pulp treatment is ...

Claims

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Application Information

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IPC IPC(8): C09K8/508C09K8/514
CPCC09K8/5083C09K8/5086C09K8/514
Inventor 黄海陈钱宝唐洁陈雷张启陈娟梅晓君
Owner CHINA TIESIJU CIVIL ENG GROUP
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