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High strength ultralight ceramsite propping agent, and preparation method and applications thereof

An ultra-light pottery and proppant technology, which is applied in chemical instruments and methods, earthwork drilling, and fluid production, etc., can solve problems such as weak pressure bearing capacity, avoid agglomeration, improve furnace temperature uniformity, and high thermal efficiency. Effect

Active Publication Date: 2020-02-18
NORTH CHINA INST OF AEROSPACE ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the proppant involved in this patent is a porous and interconnected structure with weak pressure bearing capacity

Method used

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  • High strength ultralight ceramsite propping agent, and preparation method and applications thereof
  • High strength ultralight ceramsite propping agent, and preparation method and applications thereof
  • High strength ultralight ceramsite propping agent, and preparation method and applications thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First mix 275g low-grade bauxite, 50g sodium silicate, 100g silicon powder, 50g manganese oxide, granulate, heat plasma shaping, tunnel kiln high temperature sintering at 850°C for 3h, and then get ultra-light ceramsite proppant after screening . The apparent density of ultra-light ceramsite proppant is 1.08g / cm 3 , The compressive strength is 81MPa.

Embodiment 2

[0027] First, 350g low-grade bauxite, 50g sodium silicate, 75g silicon powder, 50g nano-silica, 25g manganese carbonate are mixed uniformly, granulated, hot plasma shaped, tunnel kiln high-temperature sintering at 1100 degrees for 2h, and it is obtained after screening Ultra-light ceramsite proppant. The apparent density of the ultra-light ceramsite proppant is 1.74g / cm3, and the compressive strength is 104MPa.

Embodiment 3

[0029] First, 300g low-grade bauxite, 25g sodium silicate, 50g silicon powder, 25g nano-silica, 7.5g manganese hydroxide are mixed uniformly, granulated, hot plasma shaped, tunnel kiln high temperature sintering at 1050 degrees for 3h, after screening Get ultra-light ceramsite proppant. The apparent density of ultra-light ceramsite proppant is 1.54g / cm 3 , The compressive strength is 95MPa.

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Abstract

The invention discloses a high strength ultralight ceramsite propping agent, which is composed of bauxite, sodium silicate, silica micro powder, nano silica, and manganese ore powder according to a mass ratio of 55-70: 5-10: 10-20: 0-10: 5-10. The apparent density is 1.00-1.75 g / cm3, the bearing strength is greater than 80 MPa, and the phase component comprises a corundum phase, a mullite phase, and a glass phase. The shortages of the prior art can be overcome. The construction technical demands of water fracturing or water-free fracturing of middle-deep layer shale gas (oil) can be effectively satisfied. The operation cost of fracturing is effectively reduced.

Description

Technical field [0001] The invention relates to the technical field of shale gas (oil) fracturing proppants, in particular to a high-strength ultra-light ceramsite proppant, a preparation method and application. Background technique [0002] At this stage, the exploration and development of domestic shale gas (oil) is gradually moving from the medium-shallow layer (2000m~3000m vertical) to the medium-deep layer (3000m~4500m vertical), and the closure pressure of the formation is gradually increasing, which is a support for fracturing. The compressive strength of the agent puts forward higher requirements, for example, the construction pressure of shale fracturing in the Dingshan block of the Sichuan Basin is more than 70Mpa. At present, the true density of proppant for shale gas (oil) development is generally higher than 2.40g / cm3, and it needs to be effectively carried by linear glue with good sand-carrying performance and slippery water to enter the fractures of the far wellbor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 范俊梅袁方利李冬至
Owner NORTH CHINA INST OF AEROSPACE ENG
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