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Water-based drilling soft solid waste recycling treatment and utilization technology

A recycling and drilling technology, which is applied in the field of oil and gas exploration and drilling water-based solid waste classified disposal and utilization process, can solve the problems of large environmental pollution pollution, solid waste without intensity, low solid waste pollutant content, etc., to achieve reduction The effects of safety and environmental protection risks, saving disposal costs, and benefiting growth and proliferation

Inactive Publication Date: 2019-11-15
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Drilling solid waste is divided into hard and soft solid waste according to the nature of the source. The hard solid waste is mainly the drilling cuttings removed by the vibrating screen and the sand and mud removed by the sand and mud remover. This part of the solid waste has a low pollutant content. , is a small amount of mud adhered to drilling cuttings, which is mainly underground rock with a certain strength and particle size; soft solid waste is mainly clay mud tanks and square shaft mud, waste mud, and mud generated from drilling wastewater treatment. Part of the solid waste has no strength, the particle size of the solid is very small, and the solid waste has a high content of organic and other pollutants. Especially when drilling with various sulfonated mud systems, it is not suitable as a raw material for making bricks and cement blocks. At the same time, it is easy to Bring greater risk of environmental pollution
[0003] At present, solid waste from conventional water-based drilling in Sichuan and Chongqing is mixed together and sent to local brick factories for brick-making disposal or solidification landfill. Different types of solid waste are not collected, disposed and utilized in different ways. Not only is the final disposal volume large, but it is also transported The disposal cost is high, and the risk of safety and environmental protection during transportation is relatively high. At the same time, due to the limited solid waste receiving capacity of the surrounding brick factories, the transshipment and disposal of solid waste are affected, and in the future, it is easy to be controlled by local enterprises and raise the disposal price. The solid wastes from different drilling sources are collected and reused differently, which is economical and environmentally friendly, and complies with the national energy conservation and emission reduction policies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present invention disposes and recycles soft solid wastes such as slag, waste mud, and slag generated from drilling waste water produced by water-based drilling operations in ceramic mud tanks and square wells. Due to the content of organic and other pollutants in this part of solid waste Higher, especially when various sulfonated mud systems are used for drilling, and these soft solid wastes have no strength, and the solid particle size is very small, which is not suitable for making fired bricks or unburned bricks, especially in the middle and later stages. The use of soft solid waste to make sintered bricks when drilling in chemical mud system is likely to bring more environmental problems. However, although most of these solid wastes have high pollutant content, they are mainly organic pollutants, with very little harmful heavy metal content and some organic humus, which is beneficial to biodegradation treatment and resource utilization as greening soil, and to a...

Embodiment 2

[0033] A water-based drilling soft solid waste resource disposal and utilization process includes: firstly, drying the natural soil used for treatment to adjust its water content and particle size. Fully mix the solid waste, and then add microbial strains to the drilling solid waste at a ratio of 0.5%-1% (weight ratio), and then add microbial nutrients at 0.5-2% of the solid waste, and fully mix After uniformity, add 0.5-3 times the amount of solid waste into the soil and mix evenly, pile up the treatment mixture to form a treatment object, cover the treatment object with 5-10cm of cultivated soil, and plant some common local ornamental firewood plants or sowing grass Seeds are used as the treatment layer to prevent rainwater from directly scouring the treated matter, and form a combined natural degradation system of solid waste-microbes-soil-plants.

[0034] The present invention is described in further detail below:

[0035] Inoculate special microbial strains with degradat...

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PUM

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Abstract

The invention discloses a water-based drilling soft solid waste recycling treatment and utilization technology. The water-based drilling soft solid waste recycling treatment and utilization technologycomprises the steps that drilling soft solid waste is mixed evenly, a microorganism strain with a decomposing effect is inoculated at the proportion of 0.5%-1% by weight, and even mixing is carried out; then, a microorganism nutrient of 0.5%-2% of the solid waste by weight is added and mixed evenly, and the mixture is evenly mixed with soil with the water content of 15%-20%, wherein the mixing proportion of the solid waste and the soil is 1:(0.5-3) by weight; and the treated mixture is stacked, plants are planted or grass seeds are cast in the mixture, and a microorganism-soil-plant united system is used for decomposing treatment of organic pollutants in the drilling soft solid waste. By means of the water-based drilling soft solid waste recycling treatment and utilization technology, COD, Oil and other substances in the drilling work soft solid waste can be effectively decomposed and removed, part of the organic pollutants are decomposed into simple inorganic substances, and part ofthe organic pollutants are decomposed into humus, so that pollutants in the solid waste are removed, and the purposes of harmlessness and recycling utilization of the solid waste are achieved.

Description

technical field [0001] The invention relates to a classification, disposal and utilization process of oil and gas exploration and drilling water-based solid waste, and belongs to the technical field of oil and gas exploration and drilling pollution control. Background technique [0002] Drilling solid waste is an inevitable product of oil and gas exploration and drilling operations, and has certain environmental hazards. The amount produced in Sichuan and Chongqing is generally 0.35-0.4m 3 / m footage. Drilling solid waste is divided into hard and soft solid waste according to the nature of the source. The hard solid waste is mainly the drilling cuttings removed by the vibrating screen and the sand and mud removed by the sand and mud remover. This part of the solid waste has a low pollutant content. , is a small amount of mud adhered to drilling cuttings, which is mainly underground rock with a certain strength and particle size; soft solid waste is mainly clay mud tanks and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09C1/10
CPCB09B3/00B09C1/10B09C1/105
Inventor 陈立荣蒋学彬张志东胡攀峰张敏唐攀刘汉军王强黄敏何天鹏干汉川彭远春舒畅王荣周鋆
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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