Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for relieving downward lag of polymer flooding production well sucker rod

A technology for sucker rods and production wells, applied in the field of polymer flooding production well sucker rod down-lag release, polymer flooding well production fluid viscosity reduction technology, can solve the problems of short cycle and high cost, and achieve long cycle and solution Downward hysteresis and low degradation cost

Active Publication Date: 2016-02-03
NORTHEAST GASOLINEEUM UNIV
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is a method for removing the downward hysteresis of the sucker rod in a polymer flooding production well, which is used to solve the high cost of hot washing and oxidative degradation commonly used at present , the problem of short cycle

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
  • Method for relieving downward lag of polymer flooding production well sucker rod
  • Method for relieving downward lag of polymer flooding production well sucker rod
  • Method for relieving downward lag of polymer flooding production well sucker rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The method for releasing the downward hysteresis of the sucker rod in the polymer flooding production well: add polyepichlorohydrin amine, sodium carbonate, urotropine, and sulfamic acid to the pumping unit well in normal production by dripping medicine at the wellhead acid, wherein the addition of polyepichlorohydrin amine is 0.5% to 0.8% of the mass of the pumping well production fluid, the addition of sodium carbonate is 0.3% to 0.7% of the mass of the pumping well production fluid, urethane The addition of tropine is 0.1% of the mass of the pumping well production fluid, the addition of sulfamic acid is 2% to 4% of the mass of the pumping well production fluid, polyepichlorohydrin amine and the production fluid Polyacrylamide forms an ultra-low-viscosity association colloid solution; making the production fluid easy to be extracted from the ground.

[0023] Utilize this embodiment to secretly carry out field test of 5 wells in the sixth oil production plant of Daqin...

Embodiment 2

[0028] The method for removing the downward hysteresis of the sucker rod in the polyflooding production well: mix polyepichlorohydrin amine, sodium percarbonate, urotropine, sulfamic acid, and water to form a mixed solution, and after mixing, polyepichlorohydrin amine The mass percentage concentration of sodium percarbonate is 0.5%~0.8%, the mass percentage concentration of sodium percarbonate is 0.3%~0.7%, the mass percentage concentration of urotropine is 0.1%, and the mass percentage concentration of sulfamic acid is 2%~4%. , the amount of solvent water is 94.4~97.2%; for pumping wells with serious hysteresis or stopped pumping, during the well cleaning process, the mixed solution is injected into the bottom of the well through the annular space of the pumping well, and the oxidant at the bottom of the well is first combined with the The effect of polyacrylamide, the polyacrylamide in the formation is oxidized by the oxidant to polyacrylamide or carbon dioxide and water with...

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

No PUM Login to View More

Abstract

The invention relates to a method for relieving downward lag of a polymer flooding production well sucker rod. The method for relieving the downward lag of the polymer flooding production well sucker rod comprises the following steps: adding a polyamine flocculant, an oxidant, a corrosion inhibitor and an anti-scaling agent to a pumping well in normal production in a wellhead drip dosing manner, wherein the adding amount of the polyamine flocculant is 0.5%-0.8% of the mass of produced liquid of the pumping well, the adding amount of the oxidant is 0.3%-0.7% of mass of the produced liquid of the pumping well, the adding amount of the corrosion inhibitor is 0.1% of mass of the produced liquid of the pumping well, and the adding amount of the anti-scaling agent is 2%-4% of mass of the produced liquid of the pumping well; and forming an associated colloidal solution with ultra-low viscosity by the polyamine flocculant and polyacrylamide in the produced liquid, so that the produced liquid is easily mined from the ground. The associated colloidal solution with ultra-low viscosity is formed by the polyamine flocculant and the polyacrylamide in the produced liquid, so that the produced liquid is easily mined from the ground; the problem of the downward lag of a polymer flooding pumping unit is solved; and the degradation cost is low.

Description

technical field [0001] The invention relates to the technical field of oil production engineering and relates to the viscosity-reducing technology treatment of production fluid in polymer flooding wells, in particular to a method for releasing the downward hysteresis of sucker rods in polymer flooding production wells. Background technique [0002] Since the industrial application of polymer flooding in oil fields, good oil displacement effects have been achieved, which has a certain positive effect on maintaining high and stable production in oil fields, and has significant economic and social benefits. However, since 2000, the phenomenon of rod not running in wells of polymer flooding pumping units has appeared one after another. Compared with water flooding, the properties of the fluid produced in polymer flooding oil wells are complex, and the maximum suspension point load of the pumping unit increases compared with water flooding after polymer flooding, while the minimu...

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): E21B43/22E21B37/06C08G65/26C09K8/588
Inventor 艾立玲张荣明赵锦宇马春芳宋娇娇徐丽婷
Owner NORTHEAST GASOLINEEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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