Preparation method of low-cost petroleum fracturing propping agent

A fracturing proppant, a low-cost technology, applied in chemical instruments and methods, earthwork drilling, drilling compositions, etc., can solve the problems of high production cost and application cost of fracturing proppant, and achieve an increase in yield, Pollution reduction and production cost reduction effects

Active Publication Date: 2014-04-16
YINGKOU TENGLONG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of high production and application costs of fracturing proppants with aluminum-containing minerals as t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

[0025] Example 1 (Scheme 2)

[0026] At 500℃, olivine and silica were calcined for 1h, and then they and clay were dry-milled on a ball mill for 3h, and passed through a 200-400 mesh sieve; 600kg 300 mesh containing SiO 2 30% (weight, the same below), MgO 35% olivine powder, 350kg 400 mesh containing SiO 2 97% silica powder, 50kg 200 mesh containing SiO 2 54%, Al 3 O 3 30% of the clay mineral powder is added to the mixer in turn and mixed thoroughly, then the mixture is sieved in a ball making pot with a diameter of 3m at room temperature to obtain a 20 / 40 mesh semi-finished product. The semi-finished product is rotated in a 3m diameter It is calcined in the kiln at 1200°C for 6 hours, cooled to 30°C, and sieved to obtain 20 / 40 mesh fracturing proppant, with a firing rate of 80%.

[0027]

Example

[0028] Example 2 (Scheme 6)

[0029] The chlorite and silica were calcined at 650℃ for 3h, and then the calcined chlorite, silica and clay were dry-milled on a ball mill for 2.5h and passed through a 200-600 mesh sieve; 650kg 600 mesh containing SiO 2 23% (weight, the same below), MgO 34% chlorite powder, 300kg 400 mesh containing SiO 2 97% silica powder, 50kg 200 mesh containing SiO 2 54%, Al 3 O 3 30% clay mineral powder is mixed in a mixer and then balled and sieved in a 3m ball making pot at room temperature to obtain a 30 / 50 mesh semi-finished product. The semi-finished product is roasted in a 3m diameter rotary kiln at 1280°C for 3h , After cooling to 35°C, 30 / 50 mesh fracturing proppant is obtained by sieving, and the firing rate is 83%.

[0030]

Example

[0031] Example 3 (Scheme 10)

[0032] At room temperature, the boron mud is treated with 0.5M hydrochloric acid solution until it is neutral, filtered and washed, and then dried at 210°C; the silica is calcined at 700°C for 4h; then the clay and the pretreated boron mud And silica were dry-milled on a ball mill for 3 hours, and passed through a 300-600 mesh sieve; 620kg 400 mesh containing SiO 2 27% (weight, the same below), MgO 39% boron mud powder, 340kg 600 mesh containing SiO 2 97% silica powder, 40kg 300 mesh containing SiO 2 54%, Al 3 O 3 30% clay mineral powder is added to the mixer and mixed evenly, then balled and sieved in a 3m ball making pot at room temperature to make a 30 / 50 mesh semi-finished product. The semi-finished product is roasted in a 3m rotary kiln at 1240℃ 4h, after cooling to 40℃, 30 / 50 mesh fracturing proppant is obtained by sieving, and the firing rate is 76%.

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Abstract

The invention relates to a preparation method of a low-cost petroleum fracturing propping agent. A low-density fracturing propping agent is prepared by taking low-price raw mineral materials and industrial wastes as main raw materials, belonging to the technical field of new materials of petrochemical industry. The preparation method comprises the following steps: by taking 16-60wt% of olivine powder or 15-65wt% of boron mud powder or 15-70wt% of chlorite powder as main raw materials, proportioning 5-60wt% of silica powder and 2-30wt% of clay powder in the main raw materials; uniformly mixing the raw materials and balling in a balling pot to obtain a semi-product; and calcining the semi-product in a rotary kiln at 1200-1300 DEG C to obtain the low-density fracturing propping agent. According to the preparation method provided by the invention, the purpose of reducing the calcining temperature and improving the yield is realized by changing the system of the raw materials and introducing the industrial waste which mainly contains silicon and magnesium and the raw mineral materials which are low in price and easy to get to replace aluminum raw materials which are more expensive such as bauxite. The preparation method is an energy-saving and low-cost method of preparing the petroleum fracturing propping agent.

Description

technical field [0001] The invention relates to a method for preparing a low-cost petroleum fracturing proppant, which uses cheap and easily available minerals and industrial waste as raw materials, and prepares low-cost petroleum fracturing props through processes such as grinding, mixing, pelletizing and calcination The agent can reduce process energy consumption and increase yield, and belongs to the subject field of petrochemical new materials. Background technique [0002] As the main method of oil and gas well stimulation, hydraulic fracturing technology has been widely used in the development of various oil and gas fields, and oil fracturing proppant is the key to the success of oil hydraulic fracturing technology. When oil and gas wells are exploited, in order to keep the rock fractures deep in the formation in a cracked state, it is necessary to use oil fracturing proppant as a support. The fracturing fluid containing proppant is injected into the dust-sealed rock ...

Claims

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Application Information

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IPC IPC(8): C09K8/80C04B35/10C04B35/622
CPCC04B35/16C04B35/622C04B2235/3409C04B2235/3427C09K8/80
Inventor 丛锡桥仲剑初孙荣峰
Owner YINGKOU TENGLONG NEW MATERIALS
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