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Oil and gas field drilling fluid waste treatment-while-drilling system

A drilling mud and treatment system technology, applied in the direction of sludge treatment, water/sludge/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of increasing the total amount of waste and treatment costs, groundwater pollution, etc., to achieve Convenient scheduling, environmental protection, simple processing system effect

Active Publication Date: 2015-08-12
李磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of curing agent accounts for about 1 / 3 of the total amount of waste. The curing agents mainly include: fly ash, lime, cement, water glass, etc., which greatly increases the total amount of waste and processing costs; more serious Unfortunately, the leaching solution of waste after landfill will still cause serious pollution to groundwater

Method used

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  • Oil and gas field drilling fluid waste treatment-while-drilling system
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  • Oil and gas field drilling fluid waste treatment-while-drilling system

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Embodiment Construction

[0028] The processing system of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] The mud waste in the present invention is a mixture of various substances such as drilling sewage, drilling mud and cuttings.

[0030] see figure 1 , an oil and gas field drilling mud waste treatment system while drilling, the treatment system includes a mud waste receiving unit 1, a mud waste recycling and crushing unit 2, a stabilization unit 3, a solid-liquid two-phase separation unit 4, and a solid phase repair extrusion Unit 5, liquid phase desanding and oil separation unit 6, sewage treatment unit 7. Each unit and its connection relationship will be described in detail below.

[0031] The mud waste receiving unit 1 , the inlet is connected with the mud waste discharge outlet of the drilling mud circulation system, and is used to receive the mud waste from the drilling mud circulation system.

[0032] The drilling mud circulati...

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Abstract

The invention discloses an oil and gas field drilling fluid waste treatment-while-drilling system. The system comprises a fluid waste receiving unit, a fluid waste recovery and fragmentation unit, a stability breaking unit, a solid-liquid two phase separation unit, a solid phase restoration extrusion unit, a liquid phase desanding oil-isolation unit and a sewage treatment unit, and the above units are orderly connected. An inlet of the solid phase restoration extrusion unit is connected to an oil phase and solid phase impurity outlet of the liquid phase desanding oil-isolation unit. An inlet of the liquid phase desanding oil-isolation unit is connected to a liquid phase outlet of the solid phase restoration extrusion unit. The inlet of the solid phase restoration extrusion unit is connected to a flocculate outlet of the sewage treatment unit. Through multiple treatment by the multiple units, solids and liquid in the waste are respectively subjected to harmless treatment so that waste recycle is realized. The system prevents fluid waste landing, protects an environment around a drilling operation place and is convenient for scheduling arrangement of equipment used in a drilling site.

Description

technical field [0001] The invention belongs to the field of treatment of drilling waste in oil and gas fields, and in particular relates to a treatment system for drilling mud waste in oil and gas fields while drilling. Background technique [0002] Drilling mud waste is an extremely complex dispersion system, which is a mixture of various substances such as drilling sewage, drilling mud and cuttings. The drilling mud waste is a fairly stable colloidal suspension system, containing clay, weighted materials, various chemical treatment agents, sewage, oil-free and drilling cuttings, etc. Among them, the main chemical components harmful to the environment are hydrocarbons, salts, etc. Classes, various polymers, heavy metal ions, impurities in barite and asphalt and other modified substances. These pollutants have the characteristics of high chroma, high petroleum, high COD, high suspended solids, high salinity, etc., and are the main pollutants produced in the process of petr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F9/04
Inventor 李磊
Owner 李磊
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