A method for recovering drilling cuttings and its products and applications

A technology for recycling and drilling cuttings, applied in earthwork drilling, flushing boreholes, boreholes/well components, etc., can solve the problem of poor harmless treatment effect, increase the compactness of cuttings particles, water resistance and chemical resistance Corrosion, poor performance of recycled products, etc., to achieve strong flocculation and chemical reaction capabilities, improve erosion resistance and water resistance, reduce temperature shrinkage and dry shrinkage cracking

Active Publication Date: 2021-11-23
四川广阳环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of poor harmless treatment effect on various chemical treatment agents and heavy metal ions in drilling cuttings and poor performance of recovered and processed products existing in the recovery and treatment method of drilling cuttings, and proposes a The recovery and treatment method of drilling cuttings and its products and applications, the treatment method not only significantly improves the effect of harmless treatment of drilling cuttings, but also significantly increases the density, water resistance and chemical erosion resistance of recovered cuttings particles , realizing the harmless treatment and recycling of drilling cuttings, which is conducive to large-scale recycling of drilling cuttings and environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] Concrete preparation method comprises the following steps:

[0033] (1) Prepare tert-butanol peroxide with ethanol aqueous solution to make a mixed solution A with a mass fraction of 15%;

[0034] (2) Add allyl glycidyl ether to 500 parts of water and mix evenly, then add chlorosilane, and carry out hydrolysis reaction at a temperature of 20°C for 20 minutes. After the hydrolysis is completed, a mixed solution B is obtained;

[0035] (3) Add aluminum sulfate and ferric sulfate to the mixed solution B, stir and dissolve to obtain the mixed solution C;

[0036] (4) Add mixed solution A to mixed solution C at a speed of 80ml / min, and carry out oxidation and co-condensation reaction for 8 hours under the conditions of stirring speed of 50r / min and temperature of 40°C to obtain solution D;

[0037] (5) After the solution D was filtered, it was dried at a temperature of 80° C. to obtain a recovery treatment agent with a water content of 8%.

[0038] In the specific embodiment...

Embodiment 1

[0040] (1) Add 3kg of recovery treatment agent to 100kg of drilling cuttings, stir and react at a speed of 55r / min for 1.5h to obtain a mixed solution;

[0041] (2) Centrifuge the mixed solution to obtain sediment and clarified solution;

[0042] (3) Dry and solidify the precipitate at a temperature of 110° C. for 15 minutes, and then sieve to obtain a solid particle product.

Embodiment 2

[0044] (1) Add 0.5kg of recovery treatment agent to 100kg of drilling cuttings, stir and react for 1h at a speed of 60r / min to obtain a mixed solution;

[0045] (2) Centrifuge the mixed solution to obtain sediment and clarified solution;

[0046] (3) Dry the precipitate at a temperature of 80°C for 30 minutes, then pulverize and sieve through a pulverizer to obtain solid particles.

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Abstract

The invention discloses a recovery treatment method of drilling cuttings and its product and application; the recovery treatment method comprises the following steps: (1) adding a recovery treatment agent to the drilling cuttings, and performing a compound reaction under stirring conditions to obtain a mixed solution ;(2) Separating the mixed liquid into solid and liquid to obtain sediment and clarified liquid; (3) Drying, solidifying and sieving the sediment to obtain solid particles; the solid particles are recycled products and can be used as construction The material is used in concrete and cement stabilized layers; this recycling method not only significantly improves the harmless treatment effect on drilling cuttings, but also significantly increases the performance of cuttings particles obtained after drilling cuttings, which is conducive to recycling products application; the recovery treatment method has simple steps, low cost, good treatment effect and short time, and can be used for large-scale recovery and utilization of drilling cuttings and environmental protection.

Description

technical field [0001] The invention relates to the field of environmental protection, and relates to the recovery and treatment of drilling waste, in particular to a recovery and treatment method for drilling cuttings and its product and application. Background technique [0002] Drilling cuttings produced in the process of oil and gas exploration and development are wastes discharged from the solid control system with the drilling fluid during the drilling process. Sewage, dirty oil and drilling cuttings, etc., also contain heavy metals such as mercury, copper, arsenic, chromium, zinc, lead, etc., which are the main pollutants produced in the process of oil and gas exploration and development, with high pH, ​​high COD, high stability, High salt content, poor biodegradability and other characteristics, direct discharge is more harmful to the ecological environment. Improper disposal and excessive discharge of drilling cuttings can cause serious pollution of various environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B21/06
CPCE21B21/066E21B21/068
Inventor 苏泽模许保云艾波江滔陈茂霞舒琦曹旭原胡泽阳
Owner 四川广阳环保科技有限公司
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