Low-density and high-strength ceramic proppant and production method thereof

A production method and proppant technology, which can be used in earth drilling, other household appliances, mining fluids, etc., can solve the problems of low strength of ceramsite proppant, unstable product quality, and failure to meet performance requirements, etc., to increase the surface finish , high strength, granulation and compact effect
CN101831286BInactive Publication Date: 2013-01-16郑州德赛尔陶粒有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
郑州德赛尔陶粒有限公司
Publication Date
2013-01-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a low-density and high-strength ceramic proppant and a production method thereof. The raw material comprises 80 to 90% of raw bauxite, 3 to 10% of basalt, 4 to 10% of clay silt, 4 to 10% of clay powder and 2 to 8% of manganese ore powder. The production method comprises the following steps of: firstly, weighing the raw materials in production, grinding the raw materials into fine powder, filtering the fine powder by a sieve of 320 meshes, uniformly mixing and stirring the powder and pelletizing the mixed material, and adding the atomizing steam till the mixed materialform semi-finished pellets; secondly, baking the semi-finished pellets in a rotary kiln for 6-8h, to obtain the finished product, wherein the temperature of the kiln head is 1280 to 1310 DEG C and the temperature of the kiln tail is 290 to 320 DEG C. The damage rate of the product of the invention at the pressure of 69 MPa and 86 MPa are respectively lower than 6.8% and 9.8%; the volume densityis only 1.45 to 1.55 g / sq.cm and obviously lower than the like products; and the product has higher strength. The invention has the advantages of less and easily obtained needed raw materials in the formulation, simplification of the production process, little investment, low cost and easy popularization and application.
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Description

1. Technical field:

[0001] The invention relates to a solid proppant used in oil and gas well fracturing techniques, in particular to a low-density, high-strength ceramsite proppant and a production method thereof. 2. Background technology:

[0002] In order to develop deep oil and gas wells and increase their production, fracturing technology is widely used. In order to ensure the effective propping of fractures in deep underground formations, suitable proppant is necessary. Proppants can increase the conductivity of the formation and increase the production of oil or gas, which is an important factor in the application of fracturing technology. Due to its high strength and good sphericity, sintered ceramsite is the preferred fracturing proppant and has been highly valued. my country's petroleum industry generally refers to proppants with a pressure bearing capacity of 69MPa and 86MPa as high-strength ceramsite proppants. Among them, ceramsite proppants made of bauxite as...

Claims

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