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Water-based carrying non-active nitric acid powder and manufacturing method thereof

A non-reactive, nitric acid technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of complicated process and high cost, and achieve the effect of simple production process, low cost and reduced complexity

Inactive Publication Date: 2008-01-02
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the conventional method is to squeeze inactive nitric acid powder into the formation using crude oil as a carrier, which is costly and complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Water base of the present invention carries the manufacture method of non-active nitric acid powder specifically to carry out according to the following steps:

[0013] Step 1: Prepare 1000-2000mL of coating solution, that is, dissolve 10-50g of coating material STE (stearic acid resin) in toluene, an organic solvent, under stirring;

[0014] Step 2: Put 600-800g of water-soluble solid nitric acid powder into the coating machine and pre-dry it. The fan frequency is controlled at 18-22HZ, and the air inlet temperature is controlled at 50-60°C;

[0015] Step 3: After the core material is completely dry, turn on the peristaltic pump of the coating machine, control the speed at 6-10 rpm, and coat the water-soluble solid nitric acid powder with the prepared coating solution;

[0016] Step 4: drying the coated water-soluble solid nitric acid powder to obtain water-soluble solid nitric acid powder coated with STE material.

[0017] The water-soluble solid nitric acid powder c...

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PUM

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Abstract

The invention discloses a water-based carried inactive nitric powder and making method, which contains inactive nitric powder, wherein the exterior of the inactive nitric powder is cladded with coating material to dissolve in the organic solution without dissolving in the water. The making method comprises the following steps: 1. allocating fitful quantity of coating solution; using the coating material for fitful quantity of organic solution; 2. cladding the coating liquid on the exterior of inactive nitric powder through cladding machine. The invention can form coating material of the film on the surface of inactive nitric powder, which can squeeze inactive nitric powder into formation based on water base as carrier.

Description

technical field [0001] The invention relates to a nitric acid powder and a preparation method thereof, in particular to a water-based carrying non-active nitric acid powder and a preparation method thereof. Background technique [0002] The existing nitric acid powdering technology was introduced from Ukraine in the 1990s. Solid nitric acid is a white powder, inactive, insoluble in oil bases (such as dehydrated crude oil and diesel oil, etc.), but easily soluble in water bases (such as water, ethanol, etc.); The solubility in water increases with the increase of temperature, which can decompose strong oxidizing HNO 3 . At present, the conventional method is to squeeze inactive nitric acid powder into the formation using crude oil as a carrier, which is costly and complicated. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a water base as a carrier that can be squeezed into the formation water base to carry non...

Claims

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Application Information

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IPC IPC(8): C09K8/03
Inventor 徐绍诚张海莫成孝陈翔宇陈小华罗向东王铁林
Owner CHINA NAT OFFSHORE OIL CORP