A waste oil-based drilling fluid solid residue treating method

The technology of an oil-based drilling fluid and a treatment method is applied in the field of drilling mud waste liquid treatment, which can solve the problems of soil pollution, medium oil, inorganic salts and metal ions exceeding the standard, and achieve the effect of effectively utilizing resources and saving energy.

Active Publication Date: 2017-05-10
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
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Problems solved by technology

[0003] In order to solve the technical problems mentioned in the background technology, the present invention provides a treatment method for the solid residue of waste oil-based drilling fluid, which can solve the

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  • A waste oil-based drilling fluid solid residue treating method
  • A waste oil-based drilling fluid solid residue treating method

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing:

[0018] Depend on figure 1 As shown, the treatment method of this kind of waste oil-based drilling fluid solid residue is carried out according to the following process:

[0019] The oil-based drilling fluid mud waste liquid with solid residues produced by drilling is processed by a vibrating screen without falling to the ground, and is divided into two parts: drilling debris and mud, which are collected separately. The drilling debris enters the storage tank of the drying system, and the mud enters the sludge storage tank. pool;

[0020] After entering the sludge storage tank, the mud enters the natural sedimentation tank for natural sedimentation and separation. The upper filtrate and mixed liquid generated after natural sedimentation are sucked through the pump, and flocculant is added to the upper filtrate and mixed liquid to enter the centrifuge for further processing....

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Abstract

A waste oil-based drilling fluid solid residue treating method is disclosed. The main objective is to overcome the problem that oil, inorganic salts and metal ions in discharged drilling fluid solid waste exceed standards. The method is characterized in that mud waste liquid is treated through a vibrating screen, drilling scraps are fed into a drying system storage tank, mud is fed into a settling tank and separated, then dehydration separation is performed, materials in the drying system storage tank are fed into a system spin dryer, subjected to spin drying, fed into a disc type dryer after dehydration, and dried, residues after drying are fed into a fluidized bed incinerator, the incineration temperature is controlled, gas after incineration is dedusted by a deduster and then fed into a water heater, nitrate in exhaust gas that is finally generated is treated through an SCR+NSCR process, then desulphurization is performed by a two-alkali process, the exhaust gas is fed into an absorption column and brought into reverse contact with a cyclic liquid that is mist formed by injection through an atomizing nozzle, and dust in the exhaust gas is adsorbed by the cyclic liquid to achieve thorough dust removing. The treating method can achieve thorough harmless treatment for waste oil-based drilling fluid solid residues.

Description

technical field [0001] The invention relates to a method for treating drilling mud waste liquid applied in the drilling field. Background technique [0002] Drilling mud waste liquid is one of the main pollutants produced during oilfield development and production. If the drilling mud waste liquid is not treated in time, it will have varying degrees of impact on the production area and the surrounding environment: Drilling mud waste liquid The volatilization of oil and gas in the production area makes the concentration of total hydrocarbons in the air quality exceed the standard; the scattered and piled drilling mud waste liquid pollutes surface water and even groundwater, causing COD, BOD and petroleum in the water to seriously exceed the standard; drilling mud waste liquid contains a large amount of crude oil, As a result, the oil in the soil exceeds the standard, and the soil is compacted, destroying the vegetation in the area, degrading the grassland, and affecting the e...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/12C02F11/14C02F1/40E21B21/06C10L5/48C02F103/10
CPCC02F1/40C02F11/00C02F11/12C02F11/127C02F11/14C02F2103/10C10L5/48E21B21/066
Inventor 张雷赵奇张博韩刚王松戴春雷
Owner NORTHEAST GASOLINEEUM UNIV
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