Water-injection protection agent for oil and gas reservoir of oil field, and preparation method and application method thereof
A protective agent, a technology for oil and gas layers, applied in chemical instruments and methods, earth-moving drilling, mechanical equipment, etc., can solve the problems of water injection failing to meet the allocation and injection requirements, increasing development costs, and affecting oil and gas production.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0035] This embodiment provides a water injection protection agent for oil and gas formations for oilfields, which includes water, triethanolamine gluconate, 1,1-ethylenediphosphonic acid diethylhydroxylamine sulfate, and a bactericide, with the mass of each substance per liter of water In total, 40 g of triethanolamine gluconate, 80 g of 1,1-ethylene diphosphonic acid diethylhydroxylamine sulfate, and 120 g of bactericide. The bactericide is tetradecyl tributyl phosphonium chloride.
[0036] Preparation process: Step 1) Preparation of organic carboxylate: according to the weight ratio of gluconic acid: triethanolamine=1.31:1.00, under stirring conditions, slowly add powdered gluconic acid to the slurry of triethanolamine, and stir evenly to obtain Gluconic acid triethanolamine organic carboxylate;
[0037] Step 2) Preparation of organic sulfate: Under stirring conditions, slowly add diethylhydroxylamine to the 1,1-ethylenediphosphonic acid sulfuric acid aqueous solution (40%, w / w...
Embodiment 2
[0040] This embodiment provides a water injection protection agent for oil and gas formations for oilfields, which includes water, triethanolamine gluconate, 1,1-ethylenediphosphonic acid diethylhydroxylamine sulfate, and a bactericide, with the mass of each substance per liter of water In total, 60 g of triethanolamine gluconate, 120 g of 1,1-ethylenediphosphonic acid diethylhydroxylamine sulfate, and 180 g of bactericide. The bactericide is tetradecyl tributyl phosphonium chloride.
[0041] The preparation process is the same as in Example 1.
[0042] The clean water injection water used in Example 1 and Example 2 is long 8 The formation water is injected into the water, and its chemical composition and comprehensive water quality are shown in Table 1 and Table 2, respectively.
[0043] Table 1 Length 8 The water chemical composition of the formation water injected into the water
[0044]
[0045] Table 2 Length 8 Comprehensive water quality of ground water injected water
[0046] ...
Embodiment 3
[0079] This embodiment provides a water injection protection agent for oil and gas formations for oilfields, which includes water, triethanolamine gluconate, 1,1-ethylenediphosphonic acid diethylhydroxylamine sulfate, and a bactericide, with the mass of each substance per liter of water In total, 40 g of triethanolamine gluconate, 80 g of 1,1-ethylene diphosphonic acid diethylhydroxylamine sulfate, and 120 g of bactericide. Among them, the bactericide is a mixture of tetradecyl tributyl phosphonium chloride and organic aldehyde. Based on the mass of each substance per liter of water, the tetradecyl tributyl phosphonium chloride is 80 g and the organic aldehyde is 40 g.
[0080] Preparation process: Step 1) and Step 2) are the same as in Example 1;
[0081] Step 3) First add 400 liters of oilfield stratum sewage into the enamel reactor with a volume of 1000 liters, then add 40Kg of acrolein into the water, stir evenly, and then add 60Kg of triethanolamine gluconate and quaternary ph...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com