Unlock instant, AI-driven research and patent intelligence for your innovation.

Gas self-generating reaction formula of gas self-generating foam system

A foam system and self-generating technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of increasing formation water saturation, formation damage, reducing oil and gas permeability, etc., and achieve high gas production efficiency and low cost low effect

Inactive Publication Date: 2011-06-08
武侯区巅峰机电科技研发中心
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the acidizing fluid invades the reservoir as an external fluid. If the residual acid cannot be discharged in time, it will increase the water saturation of the formation and reduce the oil and gas permeability. inflict stratum damage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Gas self-generating reaction formula of gas self-generating foam system
  • Gas self-generating reaction formula of gas self-generating foam system
  • Gas self-generating reaction formula of gas self-generating foam system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] Under normal temperature and pressure, nitrogen is a colorless, odorless, inert gas that is inflammable and slightly soluble in liquid. Under normal pressure, when the temperature drops to -195.78°C, nitrogen will become a colorless and transparent liquid with a density of 808.23kg / m 3 , the volume expansion ratio of liquid nitrogen is 600:1, 1m 3 Liquid nitrogen converts to 646m 3 Nitrogen under standard conditions. When the temperature drops to -210°C, the nitrogen freezes into a snow-like solid.

[0023] It is precisely because of these properties of nitrogen that this experiment chooses nitrogen as the exhaust gas of residual acid. The following will discuss the formation mechanism and influencing factors of nitrogen.

[0024] (1) Principle of self-gas reaction

[0025] The main chemical materials in the autogenous reaction process include nitrite and inorganic ammonium salts. The oxidation number of nitrogen in the nitrite molecule is +3, which is in the inter...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a gas self-generating reaction formula of a gas self-generating foam system. The reaction formula is as follows: the reaction raw materials are determined to NH4Cl and NaNO2, wherein the molar concentration ratio is 0.8:1.2-1.4:0.9; the concentration of catalyst is 1.8%-2.5%; the initial reaction temperature is more than 50 DEG C; and the main gas generated by the reaction is N2 under the conditions. The gas-generating reaction has low cost and high gas-generating efficiency, generates nontoxic and harmless inert gas N2 and can not pollute the environment; and the reaction is characterized by heating and boosting the system obviously and is suitable for the low permeability formation with better tightness.

Description

technical field [0001] The invention relates to the technical field of promoting residual acid flowback by a self-generating foam system, in particular to a self-generating reaction formula of a self-generating foam system. Background technique [0002] Low-pressure, low-permeability oil and gas resources occupy an important position in my country's oil and gas resources, and their share in reserves and production is gradually increasing. Due to the geological characteristics of low-pressure seepage oil and gas reservoirs, it is generally necessary to implement corresponding stimulation measures during the development of such reservoirs. Acidizing is one of the main methods for oil and gas well stimulation currently used in the field. It is to inject one or several acid liquids or acid mixed liquids into the formation through the wellbore, and use the chemical reaction between the acid and some minerals in the formation to dissolve the connected pores or natural (hydraulic)...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/528
Inventor 黄友华
Owner 武侯区巅峰机电科技研发中心