Retarder blockage release agent for oil well and method of blockage removal
A kind of blocking remover and retarding technology, which is applied in the field of oil well blockage removal, retarding blockage remover, and blockage remover, which can solve the problems of rock skeleton damage, secondary damage, and limited range of blockage removal in the reservoir.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] In this embodiment, the oil well retarding plugging agent is composed of pre-fluid, main body fluid and post-fluid according to the volume of 50m 3 、150m 3 and 50m 3 Composition; the pre-fluid and the post-fluid are composed of the following components in mass percentage: 8% hydrochloric acid, 0.8% ammonium chloride, 0.6% citric acid, 0.4% AS-3, 0.6% SJ-21, butyl glycol Ether 0.4%, the balance is water; the main liquid is composed of the following components in mass percentage: 5% glacial acetic acid, 3% fluoroboric acid, 1.2% ammonium chloride, 0.4% citric acid, 0.6% hydroblocking agent, 0.4% corrosion inhibitor %, 0.6% ethylene glycol butyl ether, and the balance is water. The preparation method of each treatment solution is the same, that is, mixing each component and then stirring evenly.
[0028] The oil well plugging removal method comprises the following steps:
[0029] 1) For the HH37P15 well, the production string in the well was first lifted out, and the s...
Embodiment 2
[0036] In this embodiment, the retarding plugging agent for oil well is composed of pre-fluid, main body fluid and post-fluid according to the volume of 42m 3 、126m 3 and 42m 3 Composition; the pre-fluid and the post-fluid are composed of the following components in mass percentage: 8% hydrochloric acid, 1% ammonium chloride, 0.5% citric acid, 0.5% AS-3, 0.5% SJ-21, butyl glycol Ether 0.5%, the balance is water; the main liquid is composed of the following components in mass percentage: 5% glacial acetic acid, 3% fluoboric acid, 1% ammonium chloride, 0.5% citric acid, 0.5% hydrolytic lock agent, 0.5% corrosion inhibitor %, 0.5% ethylene glycol butyl ether, and the balance is water. The preparation method of each treatment solution is the same, that is, mixing each component and then stirring evenly.
[0037] The oil well plugging removal method comprises the following steps:
[0038] 1) For Well HH37P23, the production pipe string in the well is first lifted out, and the san...
Embodiment 3
[0045] In this embodiment, the oil well slow blockage removing agent is composed of pre-fluid, main body fluid and post-fluid according to the volume of 55m 3 、175m 3 and 55m 3 Composition; preflush is made up of the following components in mass percentage: hydrochloric acid 8%, ammonium chloride 1.2%, citric acid 0.4%, AS-3 0.6%, SJ-21 0.4%, ethylene glycol butyl ether 0.6%, remaining The amount is water; the main liquid is composed of the following components in mass percentage: 5% glacial acetic acid, 3% fluoroboric acid, 1% ammonium chloride, 0.5% citric acid, 0.5% hydrolytic lock agent, 0.5% corrosion inhibitor, ethylene glycol 0.5% butyl ether, the balance is water; the back liquid is composed of the following components in mass percentage: 8% hydrochloric acid, 1% ammonium chloride, 0.5% citric acid, AS-30.4%, SJ-210.4%, ethylene glycol 0.6% butyl ether, the balance is water. The preparation method of each treatment solution is the same, that is, mixing each componen...
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