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Hydrogenation heat gas chemical yield increasing solution component applied to shallow well

A chemical stimulation and thermochemical technology, applied in drilling compositions, chemical instruments and methods, wellbore/well components, etc., can solve problems such as secondary damage, low production volume of liquid placement, and impact on oil recovery efficiency

Active Publication Date: 2014-09-24
吉林贯通能源科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the radius of action is small, sediment is easy to produce and cause secondary damage, liquid placement problems and low mining volume, etc.
This affects the efficiency of oil extraction

Method used

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  • Hydrogenation heat gas chemical yield increasing solution component applied to shallow well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1 Stimulation Operation of No. 1 Shallow Well in Jilin Oilfield

[0044] Well No. 1 is a medium-porosity low-permeability reservoir; artificial well bottom 343.5m; perforation range 220.8-226.0m; casing diameter Before the stimulation operation, the daily liquid production is t, of which the daily oil production is t; the known volume per meter of casing: 8.17 liters / m. From the above data, it can be concluded that the volume of the reaction zone is 1.0025m 3. Prepare No. 1 solution 0.55m 3 , No. 2 solution 0.45m 3 , with a mass of 715kg.

[0045] Solution No. 1 (Fuel Oxidizer) Contains: Ammonium Nitrate NH 4 NO 3 , urea CO(NH 2 ) 2 , Decaborane B 10 h 14 , Glucose C 6 h 12 o 6 , cyclohexamethylenetetramine (CH 2 ) 6 N 4 ,water. The respective mass percentages: 43%, 26%, 8%, 2%, 1.5%, 19.5%; the mass of each component is: ammonium nitrate 307.45kg, urea 185.9kg, decaborane 57.2kg, glucose 14.3kg kg, cyclohexamethylenetetramine 10.725kg, water ...

Embodiment 2

[0049] Example 2 Stimulation Operation of No. 2 Shallow Well in Jilin Oilfield

[0050] Well No. 2 is a medium-porosity low-permeability reservoir; artificial well bottom 312.6m; perforation range 256.0-261.0m; casing diameter Before the stimulation operation, the daily liquid production was 1.6t, of which the daily oil production was 0.7t; the known volume per meter of casing: 8.17 liters / m. From the above data, it can be concluded that the volume of the reaction zone is 1.104m 3 . Prepare No. 1 solution 0.497m 3 , No. 2 solution 0.403m 3 , with a mass of 645.5kg.

[0051] Solution No. 1 (Fuel Oxidizer) Contains: Ammonium Nitrate NH 4 NO 3 , urea CO(NH 2 ) 2 , Decaborane B 10 h 14 , Glucose C 6 h 12 o 6 , cyclohexamethylenetetramine (CH 2 ) 6 N 4 ,water. The respective mass percentages: 42%, 25%, 7%, 1.5%, 1%, 23.5%; the mass of each component is: ammonium nitrate 271.11kg, urea 161.375kg, decaborane 45.185kg, glucose 9.6825 kg, cyclohexamethylenetetramine ...

Embodiment 3

[0055] Example 3 Stimulation Operation of No. 3 Shallow Well in Jilin Oilfield

[0056] Well No. 2 is a medium-porosity low-permeability reservoir; artificial well bottom 351.45m; perforation range 250.8-262.0m; casing diameter Before the stimulation operation, the daily liquid production was 1.6t, of which the daily oil production was 0.7t; the known volume per meter of casing: 8.17 liters / m. From the above data, it can be concluded that the volume of the reaction zone is 0.815m 3 . Prepare No. 1 solution 0.386m 3 , No. 2 solution 0.314m 3 , with a mass of 501.8kg.

[0057] Solution No. 1 (Fuel Oxidizer) Contains: Ammonium Nitrate NH 4 NO 3 , urea CO(NH 2 ) 2 , Decaborane B 10 h 14 , Glucose C 6 h 12 o 6 , cyclohexamethylenetetramine (CH 2 ) 6 N 4 ,water. The respective mass percentages: 37%, 23%, 5%, 1%, 0.5%, 33.5%; the mass of each component is: ammonium nitrate 185.6kg, urea 115.41kg, decaborane 25.09kg, glucose 5.02 kg, 2.51kg of cyclohexamethylenetetr...

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Abstract

The invention belongs to the technical field of oil exploitation, and relates to a hydrogenation heat gas chemical yield increasing solution component capable of increasing permeability of a shallow well and a near wellbore region. The solution component comprises first solution and second solution, the mass ratio of the first solution to the second solution is 1:1, the first solution comprises 37-43% of ammonium nitrate NH4NO3, 23-26% of urea CO(NH2)2, 5-8% of decaborane B10H14, 1-2% of glucose C6H12O6, 0.5-1.5% of methenamine (CH2)6N4 and 19.5-33.5% of water. The second solution comprises 44-48% of sodium nitrate NaNO3, 15-20% of sodium nitrite NaNO2, 17-21% of sodium aluminum hydride NaAlH4 and 15-19% of tetrachloroethylene C2Cl4. By the aid of the solution component, porosity of an ore bed can be increased, accordingly, permeability is increased, and the yield can be increased by 2-10 times.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a solution component for chemical stimulation of hydrogenated hot gas which can improve the permeability of shallow wells and near wells. Background technique [0002] At present, the chemical method used in shallow well mining at home and abroad is generally fracturing and acidizing. Increase the seam fractures by pressing in acid to increase the permeability of the seam to increase production. At present, there are matrix acidizing technology (using acid liquid to dissolve formation rock pores and fracture blockages to expand oil and gas seepage channels), ordinary acidizing technology (using acid liquid to open and etch fractures to improve oil and gas seepage conditions), alternating phase Pre-fluid acid fracturing technology (use different fluid viscosities and reaction characteristics to obtain non-uniform etching cracks in the process of alterna...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/68C09K8/592E21B43/26E21B43/22E21B43/24
Inventor 西莫年科·阿列克谢韩炜李子璇周亮
Owner 吉林贯通能源科技有限责任公司
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