High temperature resistant solid propellant for oil and gas deep wells and preparation method thereof

A solid propellant, high temperature resistance technology, applied in offensive equipment, inorganic oxyhalide salt explosive compositions, explosives and other directions, can solve the problem of inability to use, and achieve the effect of good temperature resistance and excellent hydrolysis resistance.

Inactive Publication Date: 2017-08-08
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 solid propellant for oil and gas deep wells and preparation method thereof
  • High temperature resistant solid propellant for oil and gas deep wells and preparation method thereof
  • High temperature resistant solid propellant for oil and gas deep wells and preparation method thereof

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Effect test

preparation example Construction

[0031] 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:

[0032] Step 1, according to the formula ratio, by weight percentage, the high temperature resistant epoxy resin is 5.59% to 26.79%, the bisphenol A epoxy resin is 1.77% to 10.38%, and the epoxy resin active diluent is 6.04% to 13.70%. Add 0.50% of the agent and 0.03% of the defoamer into the mixing pot, and pre-mix for 10 minutes;

[0033] Step 2: Add 45.00% to 65.00% of potassium perchlorate and 0.00% to 10.00% of N-amidinourea dinitramide salt to the system of step 1 in terms of weight percentage. After mixing for 50 minutes, add diaminodiphenyl The sulfone content is 4.80%-9.87%. After mixing for 15 minutes, stop mixing to obtain a syrup;

[0034] 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 finished high-t...

Embodiment 1

[0037] The weight percentage composition of this embodiment: potassium perchlorate is 55.00%, N-guanidinourea dinitramide salt is 5.00%, TGDDM is 14.40%, epoxy resin E-51 is 8.30%, o-cresyl glycidyl ether is 9.41% , accelerator boron trifluoride - amine complex 0.50%, silicone resin 0.03%, diaminodiphenyl sulfone 7.36%.

[0038] Performance Testing:

[0039] Detonation heat is determined by GJB770B-2005 method 701.2 detonation heat and combustion heat constant temperature method.

[0040] The specific volume is measured according to GJB770B-2005 method 702.1 specific volume pressure sensor method.

[0041] 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 suspended directly above the sample, not in contact with the sample. The thermal weight loss of the sample is not more than 3%, and the test is passed if it is neither flammable nor explosive. DSC exo...

Embodiment 2

[0045] The weight percentage composition of this embodiment: potassium perchlorate is 45.00%, N-guanidinourea dinitramide salt is 10.00%, TGDDM is 26.79%, epoxy resin E-51 is 1.77%, o-cresyl glycidyl ether is 6.04% , accelerator boron trifluoride - amine complex 0.50%, silicone resin 0.03%, diaminodiphenyl sulfone 9.87%.

[0046] 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.

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Abstract

The invention discloses a heat-resistant solid propellant for an oil-gas deep well. The heat-resistant solid propellant is prepared from the following components in percentage by weight: 45%-65% of potassium perchlorate, 0-10% of N-guanylurea dinitramide, 5.59%-26.79% of heat-resistant epoxy resin, 1.77%-10.38% of bisphenol A epoxy resin, 6.04%-13.7% of an epoxy resin reactive diluent, 0.5% of an accelerant, 0.03% of an antifoaming agent and 4.80%-9.87% of diamino diphenyl sulfone, wherein the sum of the raw materials in percentage by weight is 100%. The raw materials for the propellant are premixed, then are mixed, and finally are cast into a mold tobe molded, so as to prepare the finished product. The heat-resistant solid propellant is excellent in hydrolysis resistance. The heat-resistant solid propellant is soaked in clean water and 3.5% saline water for 24-48 hours; the weight loss is smaller than 3%; the volume change is smaller than 2%; the heat resistance is relatively good; the heat-resistant level reaches the condition that the solid propellant does not spontaneously combust or explode when being at 200 DEG C for 48 hours; and the heat-resistant solid propellant can be used in a high-temperature washy environment.

Description

technical field [0001] The invention belongs to the field of heat-resistant fracturing bomb charges for oil and gas deep wells, and relates to a propellant, in particular to a high-temperature-resistant solid propellant for oil and gas deep wells and a preparation method thereof. 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 forma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B29/16
Inventor 王国强李吉祯樊学忠姬月萍李勇宏冯国富谢明召张亚俊
Owner XIAN MODERN CHEM RES INST
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