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Integrated treatment method for drilling waste mud

A technology of waste mud and treatment method, which is applied in the direction of earthwork drilling, wellbore flushing, wellbore/well components, etc., which can solve the problems of surrounding environmental impact, non-recyclable, increased environmental risk and cost pressure, etc., to achieve improved return utilization rate, protection of soil and groundwater resources, and the effect of reduction

Active Publication Date: 2017-04-05
天正浚源环保科技有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] These methods cannot be reused, and have potential impacts on the surrounding environment, increasing environmental risks and cost pressures

Method used

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  • Integrated treatment method for drilling waste mud
  • Integrated treatment method for drilling waste mud
  • Integrated treatment method for drilling waste mud

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] The mud produced by the inherent desander, desilter and vibrating screen of the well team is sequentially separated from solid and liquid through the cuttings deslimer, sand removal machine and water treatment regeneration machine, so that the liquid phase is sequentially passed through the cuttings deslurry The solid phase produced by the cuttings deslimer, sand removal machine, water treatment regeneration machine and the centrifuge inherent in the well team is transported through the screw conveyor To the transport vehicle, the curing agent is added to the solid phase in the screw conveyor during the conveying process of the screw conveyor.

[0028] The debris deslimer uses a vibrating screen, the sand removal machine uses a centrifuge, the water treatment regeneration machine is a sludge dewatering machine, and the sludge dewatering machine can use a screw stacker.

example 2

[0030] This specific example adopts the following integrated treatment equipment for drilling waste mud on the basis of the method in Example 1.

[0031] Such as figure 1 An integrated processing equipment for drilling waste mud is shown, which includes an automatic classification and collection module 1 , a solid phase conveying system 2 , a multi-stage solid-liquid separation combination module 3 and a soft water tank 4 .

[0032] Such as figure 2As shown, the automatic classification and collection module 1 includes a first cuttings desizing machine 1-1, a first slurry storage tank 1-2, a second slurry storage tank 1-3, a second cuttings desliming machine 1-4, a solidification Agent adding machine 1-5, valve 1-7, pump 1-8, LED explosion-proof lighting 1-9 and agitator 1-10. The first slurry storage tank 1-2 and the second slurry storage tank 1-3 are formed by dividing a tank body, and an overflow partition is provided in the tank body, and the overflow partition is lower...

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Abstract

The invention discloses an integrated treatment method on waste drilling mud. Solid-liquid separation on the mud generated by a grit catcher, a desilter and a vibrating screen is conducted in sequence through a rock debris desizing machine, a sand removing machine and a water treatment regeneration machine existing in a drilling crew, liquid phase is collected and recycled after being possessed by the rock debris desizing machine, the sand removing machine and the water treatment regeneration machine sequentially, solid phase generated by the rock debris desizing machine, the sand removing machine, the water treatment regeneration machine and a centrifugal machine existing in the drilling crew is conveyed to a transport vehicle through a screw conveyer, and curing agent is added into the solid phase in the screw conveyer during the conveying process of the screw conveyer. According to the integrated treatment method on waste drilling mud, on the one hand, a treatment mode of classification treatment is adopted, and the use of curing agent can be reduced greatly, so that discharge of harmful solid phase is reduced fundamentally; on the other hand, solid-liquid separation is conducted without adding the curing agent during the processing process, the reuse rate of the processed liquid phase can be improved greatly, and reduction on waste drilling mud can be realized fundamentally.

Description

technical field [0001] The invention relates to a method for treating waste drilling mud. Background technique [0002] During the drilling process of oil and gas exploration and development, the shale shaker, desander, desilter and centrifuge in the drilling facility will produce mud, which is composed of three parts: solid phase, liquid phase and chemical treatment agent, which contains A large number of colloidal suspension systems of clay, weighted materials, various chemical treatment agents, sewage, dirty oil and drilling cuttings will definitely cause immeasurable harm to the natural environment if they are not treated. [0003] At present, there are three domestic treatment methods for waste drilling fluid: direct discharge, large circulation pool sedimentation and solidification treatment. [0004] (1) Direct discharge method [0005] Some waste drilling fluids can be discharged directly into the environment, but this is limited to low-toxic or non-toxic drilling ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/06
CPCE21B21/066
Inventor 闫毓霞张桂林王来忠巩亚明杨东高飞刘滨刘涛孙吉昌蔺新良
Owner 天正浚源环保科技有限公司
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