High-temperature-resistant propellant for deep oil-gas well and preparation method thereof

A technology of high temperature resistance and propellant, used in offensive equipment, inorganic oxyhalide salt explosive compositions, explosives, etc., can solve problems such as inability to use, and achieve the effects of good temperature resistance and excellent hydrolysis resistance.

Inactive Publication Date: 2015-05-06
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potassium nitrate has a high solubility in water, 31.6 grams at 20°C and 85.5 grams at 50°C, and the higher the temperature, the greater the solubility, so it cannot be used in a high temperature (greater than 150°C) multi-water environment.

Method used

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  • High-temperature-resistant propellant for deep oil-gas well and preparation method thereof
  • High-temperature-resistant propellant for deep oil-gas well and preparation method thereof
  • High-temperature-resistant propellant for deep oil-gas well and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0038] The preparation method of the above-mentioned high-temperature-resistant solid propellant for oil and gas deep wells, the method is carried out according to the following steps:

[0039] Step 1, according to the proportion of the formula, by weight percentage, the high temperature resistant epoxy resin is 10% to 20.90%, the bisphenol A epoxy resin is 0 to 16.58%, and the epoxy resin active diluent is 4.75% to 13.03%, Accelerator boron trifluoride-amine complex is 0.50%, defoamer is 0.03%, add to the mixing pot, pre-mix for 10 minutes;

[0040] Step 2: Adding 35% to 50% of potassium perchlorate and 10% to 25% of 1,1-diamino-2,2-dinitroethylene into the system of step 1 by weight percentage, and mixing for 50 minutes , then add diaminodiphenyl sulfone at 6.57% to 8.14%, and stop mixing after mixing for 15 minutes to obtain a syrup;

[0041] Step 3: pour the slurry obtained in Step 2 into a mold, put it in an oven at 130°C for 72 hours, and remove the mold to obtain a fin...

Embodiment 1

[0044] The high-temperature-resistant solid propellant for oil and gas deep wells in this embodiment is composed of the following raw materials in terms of weight percentage: 35% of potassium perchlorate, 25% of 1,1-diamino-2,2-dinitroethylene, 4, 14.40% for 4'-diaminodiphenylmethane tetraglycidylamine type epoxy resin, 5.47% for epoxy resin E-51, 13.03% for o-cresyl glycidyl ether, accelerator boron trifluoride-amine complex The compound is 0.50%, the silicone resin is 0.03%, and the diaminodiphenyl sulfone is 6.57%.

[0045] Performance Testing:

[0046] Detonation heat is determined by GJB770B-2005 method 701.2 detonation heat and combustion heat constant temperature method.

[0047]The specific volume is measured according to GJB770B-2005 method 702.1 specific volume pressure sensor method.

[0048] The test method for high temperature resistance is: Ф20mm×20mm powder column (1) 3°C / min rise to 200°C, keep warm for 48h; (2) Temperature control point: the thermocouple is ...

Embodiment 2

[0055] The high-temperature-resistant solid propellant for oil and gas deep wells of this embodiment is composed of the following raw materials in terms of weight percentage: 40% of potassium perchlorate, 20% of FOX-7, 20.90% of TGDDM, and 11.25% of o-cresyl glycidyl ether , the accelerator boron trifluoride-amine complex is 0.50%, the silicone resin is 0.03%, and the diaminodiphenyl sulfone is 7.32%.

[0056] The performance test method of the high-temperature-resistant solid propellant for oil and gas deep wells in this embodiment is the same as that in Embodiment 1, and the performance test results are shown in Table 2.

[0057] Table 2 embodiment 2 each performance test result

[0058]

[0059] It can be concluded from Table 2 that the heat of detonation (that is, energy) of the propellant is slightly higher, the specific volume is moderate, and the high temperature resistance, water resistance and salt water resistance all meet the performance requirements. Suitable f...

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Abstract

The invention provides a high-temperature-resistant propellant for a deep oil-gas well, and solves the problem that the prior art cannot be used in a high-temperature washy environment. The high-temperature-resistant propellant consists of 35-50 percent of potassium perchlorate, 10-25 percent of 1,1-diamido-2,2-diamino-dinitroethylene, 10-20.90 percent of high-temperature-resistant epoxy resin, 0-16.58 percent of bisphenol A epoxy resin, 4.75-13.03 percent of an epoxy resin active diluting agent, 0.50 percent of a promoting agent, 0.03 percent of a defoaming agent and 6.57-8.14 percent of diaminodiphenyl sulfone. The solid propellant is immersed in clean water and salty water with the concentration of 3.5 percent, so that the weight loss is smaller than 3 percent, and the volume change is smaller than 2 percent; the temperature-resistant grade reaches 200 DEG C for 48 hours, and spontaneous combustion and explosion are avoided; the propellant can be used in the high-temperature washy environment.

Description

technical field [0001] The invention belongs to the field of oil and gas deep well heat-resistant fracturing bomb charges, and relates to a propellant. Background technique [0002] Deflagration fracturing using gunpowder charges has a history of nearly 40 years of development at home and abroad. Various fracturing bomb products or technologies such as steel shell type and shellless type have been widely used in oil fields, and have achieved good production increase. Note the effect. Deflagration fracturing technology uses specific propellant charges to burn at high speed in the oil-producing layer of oil and gas wells to generate high-temperature and high-pressure pulsed gas, fracturing the formation to form multiple radial fractures radially from the wellbore, and to remove oil and gas layer pollution and blockages , effectively reduce the formation skin factor, so as to achieve the purpose of increasing production of oil and gas wells. [0003] Since the downhole enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B29/16
Inventor 王国强强皆兵孟玲玲冉秀伦李勇宏刘春邓重清屈蓓
Owner XIAN MODERN CHEM RES INST
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