Sintering process of petroleum fracturing propping agent

A technology of fracturing proppant and oil, which is applied in the direction of drilling composition, production fluid, application, etc. It can solve the problems of increasing oil and gas production and low strength, so as to reduce the broken rate, reduce the product density and improve the product strength Effect

Active Publication Date: 2020-08-07
郑州市新郑梅久实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Natural petroleum proppants mainly include natural quartz sand, glass balls, metal balls, etc., but their strength is low. Using high-quality bauxite, coal and other raw materials for ceramic sintering to prepare petroleum fracturing proppants can effectively improve the strength of proppants. Instead of natural petroleum proppant, it is used for downhole support in oilfields to increase the production of oil and gas

Method used

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  • Sintering process of petroleum fracturing propping agent

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] A kind of sintering process of oil fracturing proppant, it comprises the following steps:

[0020] After removing impurities, drying and pulverizing the potassium feldspar, the potassium feldspar fine powder is obtained; the potassium feldspar fine powder, graphite powder, and magnesium powder are mixed evenly, and fired at 600-700°C for 1 h with protective gas , heated to 950-1100°C and fired for 2 h, cooled, taken out, and pulverized again to obtain secondary powder; mixed with light-burned clay, sodium tripolyphosphate, and tuff, sprayed, mixed, granulated, and polished to obtain ceramic primary powder. The granules are fed with protective gas, and the ceramic primary granules are sintered at 1150-1210°C for 0.8 h, and then continue to heat up to 1250-1350°C for 2 h to obtain the petroleum fracturing proppant.

[0021] Include in described light burnt clay: SiO 2 32%-38%, Al 2 o 3 42%-50%, and the particle size is less than 50 μm. The potassium feldspar mainly ...

Embodiment 2

[0024] A kind of sintering process of oil fracturing proppant, it comprises the following steps:

[0025] After removing impurities, drying and pulverizing the potassium feldspar, the potassium feldspar fine powder is obtained; the potassium feldspar fine powder, graphite powder, and magnesium powder are mixed evenly, and fired at 600-700°C for 2 hours with protective gas , heated to 950-1100°C and fired for 1-2 h, cooled, taken out, and pulverized again to obtain secondary powder; mixed the secondary powder with light-burned clay, sodium tripolyphosphate, and tuff, sprayed, mixed, granulated, and polished to obtain The ceramic primary particles are fed with protective gas, and the ceramic primary particles are sintered at 1150-1210°C for 0.5 h, and then heated up to 1250-1350°C for 2 h to obtain the petroleum fracturing proppant.

[0026] The particle size of the primary ceramic particles is 20 mesh-40 mesh; the lightly fired clay includes: SiO 2 32%-38%, Al 2 o 3 42%-50%...

Embodiment 3

[0029] A kind of sintering process of oil fracturing proppant, it comprises the following steps:

[0030]Potassium feldspar is cleaned of impurities, dried, and pulverized to obtain potassium feldspar fine powder; the potassium feldspar fine powder, graphite powder, and magnesium powder are mixed evenly, and fired at 600-700°C for 1.5 h with protective gas , heated to 950-1100°C and fired for 2 hours, cooled, taken out, and pulverized again to obtain secondary powder; mixed the secondary powder with light-fired clay, sodium tripolyphosphate, and tuff, sprayed, mixed, granulated, and polished to obtain ceramic primary granules , pass through protective gas, sinter the ceramic primary particles at 1150-1210°C for 0.8 h, and then continue to heat up to 1250-1350°C for 1.6 h to obtain the petroleum fracturing proppant.

[0031] The particle size of the primary ceramic particles is 20 mesh-40 mesh; the lightly fired clay includes: SiO 2 32%-38%, Al 2 o 3 42%-50%, and the partic...

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Abstract

The invention provides a sintering process of a petroleum fracturing propping agent, wherein the sintering process comprises the following steps: removing impurities from potassium feldspar, drying, and pulverizing to obtain potassium feldspar fine powder; uniformly mixing the potassium feldspar, graphite powder and magnesium powder, introducing protective gas, firing for 1-2 h at the temperatureof 600-700 DEG C, heating to 950-1100 DEG C, firing for 1-2 h, cooling, taking out, and crushing again to obtain secondary powder; and mixing the secondary powder with light calcined clay, sodium tripolyphosphate and tuff, carrying out spray mixing granulation and polishing to obtain ceramic primary particles, introducing protective gas, sintering the ceramic primary particles at the temperature of 1150-1210 DEG C for 0.5-1 h, continuously heating to 1250-1350 DEG C, and sintering for 1-2 h to obtain the petroleum fracturing propping agent. The method avoids the application of high-aluminum minerals, ensures the performance of the petroleum fracturing propping agent as much as possible, and has a great application prospect.

Description

technical field [0001] The invention relates to petroleum fracturing proppant, in particular to a sintering process of petroleum fracturing proppant. Background technique [0002] During oil and gas deep well mining, high closure pressure and low permeability deposits are treated by fracturing to crack the oil-gas-bearing rock formations, and oil and gas are collected from the channels formed by the fractures. At this time, fluids need to be injected into the rock base to overcome formation fractures Intensive pressure creates cracks in the rock formations around the wellbore, forming a channel with high-level flow capability. In order to keep the cracks formed after fracturing open, oil and gas products can pass through smoothly. Petroleum proppant is used to enter the formation along with the high-pressure solution to fill in the fractures of the rock formation, which plays a role in supporting the fractures from closing due to stress release, so as to maintain high conduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/32C09K8/80
CPCC04B33/131C04B33/32C09K8/80C04B2235/3472C04B2235/425C04B2235/401C04B2235/447C04B2235/3267C04B2235/442C04B2235/3206C04B2235/3826C04B2235/77C04B2235/96
Inventor 王子雨杭天飞崔梦迪李宏岐宋彦佩段运明陈厚发
Owner 郑州市新郑梅久实业有限公司
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