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Microbial fermentation method for drilling cuttings of oil and gas field

A technology for microbial fermentation and drilling cuttings, applied in the field of microbial fermentation, can solve the problems of high cost, low consumption, and small market demand for non-burning bricks, and achieve the effects of low production cost, simple construction process and good repair effect.

Active Publication Date: 2020-10-16
INNER MONGOLIA HENGSHENG ENVIRONMENTAL PROTECTION TECH ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the treatment of drilling cuttings is mainly used to make unburned bricks. The disadvantage of making unburned bricks to treat cuttings is that the amount is small, the cost is high, and the market demand for unburned bricks is small

Method used

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  • Microbial fermentation method for drilling cuttings of oil and gas field
  • Microbial fermentation method for drilling cuttings of oil and gas field
  • Microbial fermentation method for drilling cuttings of oil and gas field

Examples

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Effect test

Embodiment 1

[0022] Embodiment 1: A method for microbial fermentation of drilling cuttings in oil and gas fields, which includes the following steps: (1) screening and stirring drilling cuttings; (2) laying gas supply pipelines; (3) layered stacking; (4) biological ventilation fermentation, where

[0023] (1) Screening and mixing of drilling cuttings: Screening drilling cuttings, removing large pieces of more than 5cm, then adding organic matter in a 5% weight ratio as a loosening agent and mixing uniformly to obtain the material to be fermented; in this embodiment, organic matter for straw.

[0024] (2) Laying of gas supply pipeline: Lay a layer of gas supply pipeline every 1 meter from bottom to top;

[0025] (3) Layered stacking: after the air supply pipeline is laid, the fermentation materials are stacked, and the thickness of each stack is 0.5 meters, and the compound bacterial agent and nutrient solution are sprayed according to the weight ratio of 1% of dry matter, and the stacking...

Embodiment 2

[0027] Embodiment 2: A method for microbial fermentation of drilling cuttings in oil and gas fields, which includes the following steps: (1) screening and stirring drilling cuttings; (2) laying gas supply pipelines; (3) layered stacking; (4) biological ventilation fermentation, where

[0028] (1) Screening and mixing of drilling cuttings: Screening drilling cuttings, removing large pieces of more than 5cm, then adding organic matter in a proportion of 2% by weight as a loosening agent and mixing uniformly to obtain the material to be fermented; in this embodiment, organic matter for sawdust.

[0029] (2) Laying of gas supply pipeline: Lay a layer of gas supply pipeline every 2 meters from bottom to top;

[0030] (3) Layered stacking: after the air supply pipeline is laid, the fermentation materials are stacked, and the thickness of each stack is 0.5 meters, and the compound bacterial agent and nutrient solution are sprayed respectively according to the weight ratio of 2% of d...

Embodiment 3

[0032] Embodiment 3: A method for microbial fermentation of drilling cuttings in oil and gas fields, which includes the following steps: (1) screening and stirring drilling cuttings; (2) laying gas supply pipelines; (3) layered stacking; (4) biological ventilation fermentation, where

[0033] (1) Screening and mixing of drilling cuttings: Screening drilling cuttings, removing large pieces of more than 5cm, then adding organic matter in a proportion of 3% by weight as a loosening agent and mixing uniformly to obtain the material to be fermented; in this embodiment, organic matter It is a mixture of sawdust and straw in a weight ratio of 1:1.

[0034] (2) Laying of gas supply pipeline: Lay a layer of gas supply pipeline every 1.5 meters from bottom to top;

[0035](3) Layered stacking: after the air supply pipeline is laid, the fermentation materials are stacked, and the thickness of each stack is 0.5 meters, and the compound bacterial agent and nutrient solution are sprayed ac...

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Abstract

The invention discloses a microbial fermentation method for drilling cuttings of an oil and gas field. The method comprises the following steps: (1) screening and stirring drilling cuttings, (2) laying an air supply pipeline, (3) carrying out layered stacking, and (4) carrying out biological ventilation fermentation. The method has the advantages that the drilling cuttings are converted into general solid wastes I from general industrial solid wastes II by the fermentation method, so that the drilling cuttings reach the general industrial solid waste storage and disposal site pollution controlstandard (GB18599-2001) and the modification list standard thereof; the method can be used for waste pit mine treatment, ecological restoration, vegetation soil, roadbed soil manufacturing and the like, so that the purpose of centralized, recycling and harmless treatment of the drilling cuttings is achieved, and the purposes of resource reutilization and ecological environment protection are achieved. The method has the advantages of wide application range, low production cost, simple construction process, good repair effect and the like.

Description

Technical field: [0001] The invention relates to the technical field of microbial fermentation, in particular to a microbial fermentation method for oil and gas field drilling cuttings. Background technique: [0002] Drilling cuttings produced in the process of oil and gas exploration and development are the wastes discharged from the solid control system with the drilling fluid during the drilling process. It is a multiphase stable colloidal suspension system containing clay, various chemical treatment agents, sewage , waste oil and drill cuttings are the main pollutants produced in the process of oil and gas exploration and development. They have the characteristics of high pH, ​​high COD, high stability, high salt content, and poor biodegradability. Direct discharge is more harmful to the ecological environment. Big. Improper disposal and excessive discharge of drilling cuttings can cause serious pollution of various environmental media such as soil, surface water and gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/02C12N1/20A62D101/20C12R1/01C12R1/125C12R1/10C12R1/385
CPCA62D3/02A62D2101/20C12N1/20
Inventor 李广平姚留栓刘世军梅洋李军王瑾刘开拓王兆礼思志银张海东
Owner INNER MONGOLIA HENGSHENG ENVIRONMENTAL PROTECTION TECH ENG CO LTD
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