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Preparation method and application method of water-based drilling cuttings adsorption filter material

A drill cuttings and water-based technology, which is applied in the field of preparing adsorption filter materials based on water-based drill cuttings, can solve the problems of increasing environmental protection pressure and waste of resources, and achieve the effects of easy cleaning and regeneration, long service life and good cleaning status

Active Publication Date: 2020-07-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the waste drilling mud has not realized the recycling of resources, which not only wastes resources, but also increases the follow-up environmental protection pressure

Method used

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  • Preparation method and application method of water-based drilling cuttings adsorption filter material
  • Preparation method and application method of water-based drilling cuttings adsorption filter material
  • Preparation method and application method of water-based drilling cuttings adsorption filter material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mix 100g of dried water-based drill cuttings with 15g of clay and 5g of diatomaceous earth, pulverize with a universal pulverizer and pass through a 20-mesh standard sieve. Then add a small amount of water, stir until the mixture becomes a paste, stop adding distilled water dropwise, and continue stirring for 5 min. Put the uniformly mixed mixture into a mold for molding, and perform a high-temperature roasting step (preheating temperature is 400-600°C, preheating time is 15 minutes, roasting temperature is 1000-1100°C, roasting time is 10min). The water absorption rate of the obtained product is 15%, the filter material density is 1.31 g / cm3, and the porosity is as high as 22%.

Embodiment 2

[0031] Mix 100g of dried water-based drilling cuttings with 6g of starch, 15g of diatomaceous earth, and 2g of sodium carbonate, grind them with a universal grinder, and pass through a 20-mesh standard sieve. Then add a small amount of water, stir until the mixture becomes a paste, stop adding distilled water dropwise, and continue stirring for 5 min. Put the uniformly mixed mixture into a mold for molding, and perform a high-temperature roasting step (preheating temperature is 400-600°C, preheating time is 15 minutes, roasting temperature is 1000-1100°C, roasting time is 10min). The water absorption rate of the obtained product is 21%, the filter material density is 1.28 g / cm3, and the porosity is as high as 23%.

Embodiment 3

[0033] Mix 100g of dried water-based drill cuttings with 5g of clay and 15g of diatomaceous earth, pulverize with a universal pulverizer and pass through a 20-mesh standard sieve. Then add a small amount of water, stir until the mixture becomes a paste, stop adding distilled water dropwise, and continue stirring for 5 min. Put the uniformly mixed mixture into a mold for molding, and perform a high-temperature roasting step (preheating temperature is 400-600°C, preheating time is 15 minutes, roasting temperature is 1000-1100°C, roasting time is 10min). The water absorption rate of the obtained product is 18%, the filter material density is 1.26 g / cm3, and the porosity is as high as 22%.

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Abstract

The invention discloses a preparation method and application method of a water-based drilling cutting adsorptive filter material. The adsorptive filter material comprises the following components in parts by weight: 100 parts of water-based drilling cuttings, 0 to 30 parts of composite reinforcing agents, 2 to 30 parts of forming agents, 0 to 20 parts of air entraining agents and 2 to 20 parts of water; the composite reinforcing agent is one or a combination of more of a silicon-oxygen compound, diatomaceous earth and fly ash; the forming agent is a hydrophilic polymer compound and / or clay; the air entraining agent is sodium carbonate and / or sodium bicarbonate; the preparation method comprises the following steps: (1) uniformly mixing the water-based drilling cuttings, the composite reinforcing agents, the forming agents, the air entraining agent, other auxiliaries and water, then performing granulation and forming; (2) roasting after preheating, thus obtaining ceramsite adsorptive filter material. The adsorptive filter material prepared by the method is well-developed in pore structure, larger in specific surface area, higher in compressive strength and better in adsorption effects, and the physical property indexes of the adsorptive filter material are obviously superior to the industry standards of China.

Description

technical field [0001] The invention belongs to the field of adsorption filter material and its preparation and application, in particular to an adsorption filter material prepared based on water-based drilling cuttings and its application. Background technique [0002] Porous adsorption filter material is a kind of ceramic material that has been fired at high temperature and has a large number of pore structures that communicate with each other and the surface of the material. It mainly uses pores as the main phase. The main components of fired filter material are clay and other additives, while the waste drilling mud itself is composed of weighting agent, clay, chemical treatment agent, water, oil and drilling cuttings, etc., and its main components are clay and drilling cuttings, which are also The main raw material for sintering of porous ceramic filter material can be used as the aggregate of filter material sintering. However, at present, the waste drilling mud has no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/13C04B38/02C04B33/32C04B38/08
CPCC04B33/13C04B33/1305C04B33/131C04B33/132C04B33/32C04B38/009C04B38/02C04B38/08C04B2235/3418C04B2235/96C04B2235/9607C04B38/0074C04B38/0067Y02P40/60
Inventor 孙恩呈韩卓魏玉梅王晓慧宋春燕席琦郭爱洪马文翠赵金刚
Owner CHINA PETROLEUM & CHEM CORP
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