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Powder for preparing microspheres for detonation of blasting in oil field layer

A miniature and spherical technology, applied in the direction of explosives, etc., can solve the problems of reliability discount, unsatisfactory detonation and ignition work ability, etc., to increase the ignition area, increase the success rate of deflagration and the percentage of suspension explosive combustion, and increase the raw material Easy to get effect

Active Publication Date: 2013-04-03
西安石油大油气科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But generally speaking, its detonation, detonation and ignition performance is still not ideal, and its reliability is greatly reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of medicinal powder for preparing microspheres of detonation and detonation in the oilfield layer of the present embodiment is made by uniformly mixing the raw materials of the following mass percentages: 44% potassium chlorate, 6% potassium perchlorate, 4% ammonium nitrate, 36% sulfur powder, and 9% nitrocellulose %, aluminum powder (with a particle size below 10 μm) 0.5%, and magnesium powder (with a particle size below 10 μm) 0.5%.

[0031] The preparation method is as follows: the raw materials of each component are mixed evenly in proportion.

[0032] The method for preparing the explosion-initiated microspheres in the oilfield layer by using the powder of the present embodiment is as follows:

[0033] (1) Get a part of the medicated powder, and add collodion acetone solution therein, stir into a ball and then forcefully sieve with a non-metallic scraper, then sieve, and take a particle diameter of 0.42mm as a qualified product and dry; The add-on of cotton...

Embodiment 2

[0040] A kind of medicated powder for preparing microspheres of detonation and detonation in the oilfield layer of the present embodiment is made by uniformly mixing the raw materials in the following mass percentages: 56% potassium chlorate, 5% potassium perchlorate, 5.5% ammonium nitrate, 25% sulfur powder, and 7% nitrocellulose %, aluminum powder (with a particle size below 10 μm) 1%, magnesium powder (with a particle size below 10 μm) 0.5%.

[0041] The preparation method is as follows: the raw materials of each component are mixed evenly in proportion.

[0042] The method for preparing the explosion-initiated microspheres in the oilfield layer by using the powder of the present embodiment is as follows:

[0043] (1) Get part of the medicated powder, and add collodion acetone solution therein, stir into a ball and then forcefully sieve with a non-metallic scraper, then sieve, and take a particle diameter of 1.19mm as a qualified product and dry; The add-on of cotton glue ...

Embodiment 3

[0050] A kind of medicinal powder for preparing microspheres of detonation and detonation in the oilfield layer of the present embodiment is made by uniformly mixing the raw materials in the following mass percentages: 48% potassium chlorate, 10% potassium perchlorate, 8% ammonium nitrate, 25% sulfur powder, and 7% nitrocellulose %, aluminum powder (with a particle size below 10 μm) 1%, magnesium powder (with a particle size below 10 μm) 1%.

[0051] The preparation method is as follows: the raw materials of each component are mixed evenly in proportion.

[0052] The method for preparing the explosion-initiated microspheres in the oilfield layer by using the powder of the present embodiment is as follows:

[0053] (1) Get a part of the medicated powder, and add collodion acetone solution therein, stir into a ball and then forcefully sieve with a non-metallic scraper, then sieve, and take a particle diameter of 0.8mm as a qualified product and dry; The add-on of cotton glue ac...

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Abstract

The invention discloses a powder for preparing microspheres for detonation of blasting in an oil field layer. The powder is formed by evenly mixing the following raw materials by mass percent: 44%-56% of potassium chlorate, 5%-10% of potassium perchlorate, 3%-8% of ammonium nitrate, 25%-36% of sulfur powder, 7%-9% of nitrocotton, 0.5%-1% of aluminum powder and 0.5%-1% of magnesium powder. The powder of the invention has simple components, easily obtained raw materials and a simple preparation method, and can be obtained only by evenly mixing the components. The microspheres prepared by adopting the powder of the invention are easily transplanted in the rock gaps at the bottom of the oil field; the detonation blasting effect of the microspheres is good, and the success rate of the ignitionreaches 100%, so that the oil-production efficiency of the oil field can be effectively improved, and the microspheres are safe and reliable and have low cost; and the microspheres can be transportedin the geofracture with the space of 2mm-3mm along with liquid gunpowder or suspension gunpowder, thereby solving the problems that the existing priming system can not realize reliable ignition in a crack.

Description

technical field [0001] The invention belongs to the technical field of explosives, and in particular relates to a drug powder for preparing microspheres for explosion initiation in an oilfield layer. Background technique [0002] The oil reserves of low-permeability oil reservoirs in my country are very considerable, and the geological reserves of newly proven low-permeability oil fields are several billion tons, accounting for about 1 / 4 of my country's total oil reserves. Low-permeability reservoirs are usually developed by vertical wells and vertical infill wells, water injection development and horizontal well development. Vertical wells and vertical infill wells are developed using formation energy, and the recovery rate is low. Water injection development and fracturing development are relatively common development schemes for most low-permeability reservoirs at present, which need to increase the number of wells drilled and the number of oil layer stimulations, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B33/14
Inventor 廖红伟张杰胡继国郑宝林
Owner 西安石油大油气科技有限公司
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