A kind of petroleum fracturing proppant prepared by utilizing oil shale ash residue and preparation method thereof

A technology of fracturing proppant and oil shale ash, which is applied in the direction of chemical instruments and methods, earthwork drilling, and drilling compositions, etc., which can solve the health hazards of surrounding residents, serious pollution of land, water sources, and oil shale Problems such as large accumulation of ash and slag can be achieved to improve the use value, solve the effects of large volume density and apparent density, and low production cost

Inactive Publication Date: 2018-05-15
陕西省能源化工研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, after refining shale oil from oil shale, the accumulation of waste oil shale ash is huge, requiring a lot of land, and at the same time, causing serious harm to the health of surrounding residents
The pollution of oil shale ash is mainly due to the large amount of heavy metal elements contained in it. After rainwater leaching or diffusion, these elements will seriously pollute the surrounding land and water sources, thereby destroying the productive capacity of the soil, thereby destroying agricultural production and endanger residents' health

Method used

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  • A kind of petroleum fracturing proppant prepared by utilizing oil shale ash residue and preparation method thereof
  • A kind of petroleum fracturing proppant prepared by utilizing oil shale ash residue and preparation method thereof
  • A kind of petroleum fracturing proppant prepared by utilizing oil shale ash residue and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A petroleum fracturing proppant prepared by using oil shale ash, which is composed of the following mass percentages of material raw materials:

[0022]

[0023] The preparation method of the petroleum fracturing proppant includes the following steps:

[0024] 1) Raw material pretreatment: Crushed oil shale ash, oil shale semi-coke and bauxite;

[0025] 2) Mixing: Mix the crushed oil shale ash, oil shale semi-coke, bauxite with clay, manganese powder, titanium oxide, barium carbonate and dolomite, and use a ball mill to grind the mixture to a size of 400 mesh screen;

[0026] 3) Pellets: use a pan granulator to pelletize, and then mix and subdivide the mixture into pellets of 0.45 to 0.9 mm, and the water content of the pellets is 40% to 55%;

[0027] 4) Drying: Dry the pellets at 200°C for 1 hour to dry;

[0028] 5) Calcining: The dried pellets are sent to the rotary kiln for sintering, the sintering temperature is 1100℃, and the sintering time is 2h;

[0029] 6) Cooling: Air coo...

Embodiment 2

[0032] A petroleum fracturing proppant prepared by using oil shale ash, which is composed of the following mass percentages of material raw materials:

[0033]

[0034] The preparation method of the petroleum fracturing proppant includes the following steps:

[0035] 1) Raw material pretreatment: Crushed oil shale ash, oil shale semi-coke and bauxite;

[0036] 2) Mixing: Mix the crushed oil shale ash, oil shale semi-coke, bauxite with clay, manganese powder, titanium oxide, barium carbonate and dolomite, and use a ball mill to grind the mixture into fine particles, and pass 400 mesh screen;

[0037] 3) Pellets: use a pan granulator to pelletize, and then mix and subdivide the mixture into pellets of 0.45 to 0.9 mm, and the water content of the pellets is 40% to 55%;

[0038] 4) Drying: Dry the pellets at 200°C for 1 hour to dry;

[0039] 5) Calcining: The dried pellets are sent to the rotary kiln for sintering, the sintering temperature is 1200℃, and the sintering time is 2h;

[0040] 6)...

Embodiment 3

[0043] A petroleum fracturing proppant prepared by using oil shale ash, which is composed of the following material components by mass percentage:

[0044]

[0045]

[0046] The preparation method of the petroleum fracturing proppant includes the following steps:

[0047] 1) Raw material pretreatment: crushing oil shale ash, oil shale semi-coke and bauxite;

[0048] 2) Mixing: Mix the crushed oil shale ash, oil shale semi-coke, bauxite with clay, manganese powder, titanium oxide, barium carbonate and dolomite, and grind the mixture into fine particles with a ball mill and pass through a 400 mesh sieve ;

[0049] 3) Pellets: use a pan granulator to pelletize, and then mix and subdivide the mixture into pellets of 0.45 to 0.9 mm, and the water content of the pellets is 40% to 55%;

[0050] 4) Drying: Dry the pellets at 200°C for 1 hour to dry;

[0051] 5) Calcining: send the dried pellets to the rotary kiln for sintering, the sintering temperature is 1250℃, and the sintering time is 2.5h;...

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Abstract

The invention relates to a low-density high-strength petroleum fracturing propping agent prepared from oil shale ash and a preparation method of the petroleum fracturing propping agent. The propping agent is prepared from the oil shale ash, oil shale semicoke, bauxite, clay, manganese powder, dolomite and other raw materials. The preparation method of the propping agent comprises the process steps of raw material pretreatment, mixing, balling, drying, calcining, cooling and the like. The propping agent and the preparation method of the propping agent have the advantages of being wide in raw material source, simple in preparation method process, easy to operate, economical, environmentally friendly, low in production cost and the like. A large amount of land occupied by accumulation of the oil shale ash can be reduced, the serious threat of the oil shale ash to the environment, zoology and human health can be relieved, and the problems that during petroleum and natural gas well shallow shaft fracturing construction of the previous oil shale gas production process, the fracturing propping volume density and apparent density are large, and construction cost is high are solved. The utilization value of the oil shale ash, the oil shale semicoke and the like is improved, the oil shale ash is made profitable, and the propping agent is very suitable for industrial production.

Description

Technical field [0001] The invention belongs to the technical field of preparation of chemical products for oil and gas fields, and relates to a low-density and high-strength petroleum fracturing proppant prepared by using oil shale ash residue and a preparation method thereof. Background technique [0002] Petroleum fracturing proppant is an important filling medium for the fracturing construction of oil, natural gas and shale gas low-permeability oil and gas wells, and its properties directly affect the productivity of the entire oil well. Injecting petroleum fracturing proppant into oil and gas wells can not only increase the permeability of oil and gas reservoirs and increase oil and gas production, but also extend the life of oil and gas wells. Therefore, it is necessary to study high-performance petroleum fracturing proppants for increasing oilfield production. In the prior art, the traditional petroleum fracturing proppant mainly uses the pure corundum phase as the suppor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 周立发路平刘伟刚李阳阳巨浩波魏涛高建平罗婷陈永振白勇
Owner 陕西省能源化工研究院
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