Oil and gas field water-based drill cuttings soil conditioner, soil improvement method and improved soil

A technology for drilling cuttings and improver, which is applied in the field of solid waste treatment and resource utilization in oil and gas fields, can solve problems such as lack of mature technology, and achieve the effects of increasing the content of silt particles, being beneficial to soil structure, and reducing the content of sand particles.
CN111100651AInactive Publication Date: 2020-05-05PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2020-05-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an oil and gas field water-based drill cuttings soil conditioner, a soil improvement method and improved soil. The soil conditioner is composed of biochar powder, polyacrylamide and fly ash, and meanwhile, the composition content of each substance in the soil conditioner is limited; the biochar in the soil conditioner has the characteristics of high pH value, high carbon-nitrogen ratio, high porosity and strong adsorption capacity to soil nutrients, is not easy to decompose and utilize by microorganisms, has long retention time, and is beneficial to improve soil carbonfixation and improve soil physicochemical properties; anionic polyacrylamide is a water-soluble high-molecular polymer, can effectively inhibit soil moisture evaporation and prevent water and soil loss, and can improve the soil structure and promote soil microbial development; and main components of the fly ash are similar to those of soil, particles are of porous honeycomb structures, the specific surface area is large, the fly ash has high adsorption activity, and the silt content of the soil can be increased.
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Description

【Technical field】

[0001] The invention belongs to the technical field of solid waste treatment and resource utilization in oil and gas fields, and in particular relates to a water-based drilling cuttings soil improvement agent for oil and gas fields, a soil improvement method, and improved soil. 【Background technique】

[0002] Water-based drilling cuttings in oil and gas fields are formation rock debris discharged from the wellhead when water-based drilling fluid is used for drilling, and are general industrial solid wastes. A 3000m deep oil and gas well produces drilling cuttings of about 500-700m 3 , due to the lack of effective means of disposal, it can only occupy a large amount of land for stacking, which may have a certain impact on the local environment.

[0003] Solid waste recycling technology is mainly divided into physical and chemical treatment technology, material separation and recovery technology, material recovery, land restoration technology and other types...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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