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Harmless treatment method for alkali-containing waste drilling fluid

A technology of waste drilling fluid and harmless treatment, applied in mining wastewater treatment, chemical instruments and methods, fixed/solidified sludge treatment, etc. To achieve the effect of harmless treatment, low treatment cost and strong operability

Pending Publication Date: 2019-10-25
南阳油田腾龙实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For this reason, the embodiment of the present invention provides a method for harmless treatment of waste drilling fluid containing alkali to solve the problem that waste drilling fluid in the prior art can easily pollute soil, surface and groundwater, and cause direct or indirect damage to human health. problem of influence

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment provides a method for harmless treatment of alkali-containing waste drilling fluid, which includes the following steps:

[0020] Step 1. Add sewage treatment agent to the alkali-containing waste drilling fluid, stir evenly to prepare mixture I, and set aside;

[0021] Step 2, adding an alkali neutralizing treatment agent to the mixture I prepared in step 1, and stirring evenly to prepare mixture II, which is set aside;

[0022] Step 3: Add curing treatment agent to the mixture II, stir evenly, cover with soil and bury.

[0023] Further, the first step includes excavating the waste drilling fluid pool first, and the excavated soil is piled up next to the waste drilling fluid pool for use, and the alkali-containing waste drilling fluid is discharged into the waste drilling fluid pool, and then the alkali-containing waste drilling fluid is poured into the waste drilling fluid pool. Add sewage treatment agent to the liquid.

[0024] Further, the third step...

Embodiment 2

[0028] On the basis of taking the technical scheme of Example 1, the sewage treatment agent in step one includes ferrous sulfate, ferric aluminate, hydrochloric acid, polyaluminum chloride and water, and the parts by weight of each component are respectively ferrous sulfate 24 parts, 30 parts of ferric aluminate, 1 part of hydrochloric acid, 12 parts of polyaluminum chloride, 24 parts of water.

Embodiment 3

[0030] On the basis of taking the technical scheme of Example 1, the sewage treatment agent in step one includes ferrous sulfate, ferric aluminate, hydrochloric acid, polyaluminum chloride and water, and the parts by weight of each component are respectively ferrous sulfate 28 parts, 34 parts of ferric aluminate, 5 parts of hydrochloric acid, 18 parts of polyaluminum chloride, and 28 parts of water.

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PUM

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Abstract

Embodiments of the invention disclose a harmless treatment method for an alkali-containing waste drilling fluid. The harmless treatment method comprises the following steps: adding a sewage treating agent into the alkali-containing waste drilling fluid, carrying out uniform mixing under stirring, then adding an alkali neutralizing treating agent, carrying out uniform mixing under stirring, then adding a curing treating agent, carrying out uniform mixing under stirring, and covering soil for burying treatment. The method provided by the invention has simple treatment process, strong operabilityand low treatment cost, is applicable to harmless treatment of the alkali-containing waste drilling fluid, and can effectively solve the problem of direct or indirect influence on the human health due to pollution of the alkali-containing waste drilling fluid to soil, earth surface and underground water in the prior art; in addition, the sewage treating agent, the alkali neutralizing treating agent and the curing treating agent provided by the invention can effectively realize harmless treatment of a waste drilling fluid.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of sewage treatment, in particular to a method for harmless treatment of alkali-containing waste drilling fluid. Background technique [0002] Drilling fluid is the "blood" of drilling engineering. Its main functions include cleaning the bottom of the well, carrying cuttings, cooling and lubricating the drill bit, drill string, balancing formation pressure, maintaining wellbore stability, suspending cuttings and weighting agents, and effectively transmitting hydraulic power , To withstand part of the gravity of the drill pipe casing, to provide the drilled formation data and hydraulically assisted rock breaking, etc. However, with the continuous improvement of environmental protection laws and regulations and the continuous improvement of environmental protection requirements, waste drilling fluid has become one of the main pollution sources of drilling engineering. Taking the curre...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F11/00C02F103/10
CPCC02F1/00C02F1/66C02F11/008C02F2103/10
Inventor 陈才高杰赵世民何叶萍陈文陈贡生
Owner 南阳油田腾龙实业有限公司