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

A solid propellant and high-temperature-resistant technology, which is applied in the direction of offensive equipment, inorganic oxyhalide salt explosive composition, explosives, etc., can solve problems such as inability to use, and achieve the effects of good temperature resistance and hydrolysis resistance

Inactive Publication Date: 2013-09-18
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 temperat

Method used

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

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Experimental program
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preparation example Construction

[0037] The preparation method of the above-mentioned high temperature resistant solid propellant for deep oil and gas wells, the method is carried out according to the following steps:

[0038] Step 1, according to the formula proportion, in weight percentage, the high temperature resistant epoxy resin is 10.00%-32.37%, the bisphenol A epoxy resin is 0-11.79%, the epoxy resin reactive diluent is 0-12.77%, and the Add 0.03% foaming agent to the mixing pot and premix for 10 minutes;

[0039] Step 2, in weight percentage, add potassium perchlorate to the system of step 1 in an amount of 33.00% to 58.00%, and 1,3,5-triamino-2,4,6-trinitrobenzene in an amount of 8.00% to 33.00%, After mixing for 50 minutes, add 2-ethyl-4-methylimidazole to a concentration of 0.98% to 1.60%, and stop mixing after 15 minutes to obtain medicinal slurry;

[0040] In step 3, the slurry obtained in step 2 is poured into a mold, put into a 70° C. oven for curing for 24 hours, and demolded to obtain a fin...

Embodiment 1

[0043]The high temperature resistant solid propellant for oil and gas deep wells of the present embodiment is composed of the following raw materials in percentage by weight: potassium perchlorate is 33.00%, TATB is 33.00%, TGDDM is 14.40%, epoxy resin E-51 is 5.40%, and Tolyl glycidyl ether was 12.77%, silicone resin was 0.03%, and 2-ethyl-4-methylimidazole was 1.40%.

[0044] Performance Testing:

[0045] Detonation heat is determined according to GJB770B-2005 method 701.2 explosion heat and combustion heat constant temperature method.

[0046] The specific volume is determined by the GJB770B-2005 method 702.1 specific volume pressure sensor method.

[0047] The test method of high temperature resistance is: Ф20mm×20mm grain column (1) 3℃ / min rise to 180℃, keep warm for 48h; (2) Temperature control point: The thermocouple is suspended directly above the sample and is not in contact with the sample. The thermal weight loss of the sample is not more than 3%, and the test is ...

Embodiment 2

[0054] The high temperature resistant solid propellant for oil and gas deep wells of the present embodiment is composed of the following raw materials in weight percentage: potassium perchlorate is 41.00%, TATB is 25.00%, TGDDM is 32.37%, silicone resin is 0.03%, 2-ethyl -4-Methylimidazole was 1.60%.

[0055] The performance test method of the high temperature resistant solid propellant for oil and gas deep wells of this embodiment is the same as that of embodiment 1, and the performance test results are shown in Table 2.

[0056] Table 2 embodiment 2 performance test results

[0057]

[0058]

[0059] It can be concluded from Table 2 that the explosion heat (ie energy) of the propellant is moderate, the specific volume is moderate, and the high temperature resistance, water resistance and salt water resistance all meet the performance requirements. It is suitable for the use of heat-resistant fracturing ammunition in deep oil and gas wells.

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Abstract

The invention provides a high-temperature-resistant solid propellant for a deep oil-gas well. The solid propellant is prepared from the following raw materials in percentage by weight: 33.00-58.00% of potassium perchlorate, 8.00-33.00% of TATB, 10.00-32.37% of high-temperature-resistant epoxy resin, 0-11.79% of bisphenol A epoxy resin, 0-12.77% of epoxy-resin reactive diluent, 0.03% of defoamer and 0.98-1.60% of 2-ethyl-4-methylimidazole, wherein the sum of the weight percent of the raw materials is 100%; and the raw materials of the propellant are subjected to premixing, remixing and molding so as to prepare a finished product. When the solid propellant is soaked in clean water and 3.5% brine for 24-48 hours, the loss of weight is lower than 3%, and the volume change is lower than 2%; and the temperature resisting level reaches 180 DEG C in 48 hours, and the spontaneous combustion does not occur, thus the solid propellant can be used in high-temperature watery environment.

Description

technical field [0001] The invention belongs to the field of heat-resistant fracturing bombs for oil and gas deep wells, and relates to a propellant, in particular to a high-temperature-resistant solid propellant for deep oil and gas wells and a preparation method thereof. Background technique [0002] Deflagration fracturing using gunpowder charge has a development history of nearly 40 years 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 and increased production. Note the effect. Deflagration fracturing technology uses a specific propellant charge 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 to remove pollution and blockages in oil and gas layers. , effectively reducing t...

Claims

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Application Information

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IPC IPC(8): C06B29/16
Inventor 王国强李吉祯张殿红蔚红建李勇宏胥会祥党永战梁勇付小龙刘晓军张正中李洋石小兵
Owner XIAN MODERN CHEM RES INST
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