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

Solid biochemical corrosion retardant rod for oil wells and preparation method thereof

A kind of anti-corrosion rod and solid technology, which is applied in the direction of earthwork drilling and production, wellbore/well parts, etc. It can solve the problems that affect the normal production of oil fields, the oil pump is not tightly sealed, and the sucker rod is broken, so as to increase the effective period of anti-corrosion and extend the oil well The effect of longevity and ease of use

Inactive Publication Date: 2012-02-01
XIAN REJE BIOLOGICAL TECH +1
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous exploitation, the water content of the oil well gradually increases, and the oil well produced fluid contains a large amount of corrosive anions, metal cations and hydrogen sulfide gas, etc. These factors directly or indirectly affect the oil pump, tubing, casing and oil pumping. Rods cause different degrees of corrosion, which directly lead to poor sealing of oil pumps, perforation of oil pipes and even fracture of sucker rods, which directly affect the normal production of oil fields

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Prepare 4 kilograms of stearic acid, 8 kilograms of calcium stearate, 44 kilograms of bis-imidazoline quaternary ammonium salts and 44 kilograms of sodium dodecylsulfonate by mass ratio, and mix homogeneously at room temperature;

[0020] (2) Heat up to 115°C at a rate of 1°C / min while stirring, and stir at 115°C for 45 minutes to make it completely react, then pour it into 100 special molds on average, and cool naturally for 2 hours;

[0021] (3) After cooling and forming, drill holes evenly on each corrosion inhibition rod, and add 0.02 kg of antimicrobial peptide evenly into the holes.

[0022] (4) Using the test method described in "Evaluation Method for Corrosion Inhibitors for Oilfield Produced Water" SY / T5237-2000, the corrosion inhibition rate is 85.2%, and the anticorrosion validity period is 13 months.

Embodiment 2

[0024] (1) Prepare 6 kilograms of stearic acid, 12 kilograms of calcium stearate, 41 kilograms of cycloalkyl cationic imidazoline quaternary ammonium salts and 41 kilograms of sodium dodecylsulfonate by mass ratio, and mix homogeneously at room temperature;

[0025] (2) Heat up to 115°C at a rate of 1°C / min while stirring, and stir at 115°C for 45 minutes to make it completely react, then pour it into 100 special molds on average, and cool naturally for 2 hours;

[0026] (3) After cooling and forming, drill holes evenly on each corrosion inhibition rod, and add kilograms of antimicrobial peptides evenly into the holes.

[0027] (4) Using the test method described in "Evaluation Method for Corrosion Inhibitors for Oilfield Produced Water" SY / T5237-2000, the corrosion inhibition rate is 83.6%, and the anticorrosion validity period is 14 months.

Embodiment 3

[0029] (1) Prepare 8 kilograms of stearic acid, 16 kilograms of calcium stearate, 38 kilograms of oleic acid group cationic imidazoline quaternary ammonium salts and 38 kilograms of sodium dodecyl sulfonate by mass ratio, and mix homogeneously at room temperature; (2) Heat up to 115°C at a rate of 1°C / min while stirring, and stir at 115°C for 45 minutes to make it completely react, then pour it into 100 special molds on average, and cool naturally for 2 hours;

[0030] (3) After cooling and forming, drill holes evenly on each corrosion inhibition rod, and add 0.02 kg of antimicrobial peptide evenly into the holes.

[0031] (4) Using the test method described in "Evaluation Method of Corrosion Inhibitors for Oilfield Produced Water" SY / T5237-2000, the corrosion inhibition rate is 82%, and the effective period of anticorrosion is 13 months.

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 provides a solid biochemical corrosion retardant rod for oil wells and a preparation method thereof, relating to a solid biochemical composite corrosion retardant rod used in oil wells and capable of inhibiting corrosion to oil pipes and casing pipes and a preparation method thereof. The corrosion retardant rod comprises, by mass, 4% to 8% of stearic acid, 8% to 16% of calcium stearate, 38% to 44% of a corrosion inhibitor, 38% to 44% of a surfactant and microbes, wherein, the mass of the microbes accounts for 2% of the total mass of the rest four components. The solid biochemical corrosion retardant rod for oil wells provided in the invention enables the period of anti-corrosive validity to be effectively increased and the service life of oil wells to be prolonged, has the advantages of simple operation, convenient usage, safety, environmental protection and no pollution to crude oil, and is a long-acting solid corrosion inhibitor. Unqualified products of the corrosion retardant rod can be reput into a furnace for renewed production, and no waste is generated in the process of production. The corrosion retardant rod has a corrosion retardant rate more than 80% and a period of validity more than 360 days.

Description

【Technical field】 [0001] The invention relates to a solid biochemical composite corrosion inhibiting rod applied in an oil well and capable of inhibiting the corrosion of oil pipes and casings and a preparation method thereof. 【Background technique】 [0002] Due to many years of exploitation in many oil fields, a considerable part of the oil wells have entered the late stage of oil recovery. With the continuous exploitation, the water content of the oil well gradually increases, and the oil well produced fluid contains a large amount of corrosive anions, metal cations and hydrogen sulfide gas, etc. These factors directly or indirectly affect the oil pump, oil pipe, casing and oil pumping. Corrosion of rods in different degrees will directly lead to poor sealing of oil pumps, perforation of oil pipes and even fracture of sucker rods, which will directly affect the normal production of oil fields. 【Content of invention】 [0003] The purpose of the present invention is to so...

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
IPC IPC(8): C09K8/54
Inventor 陈富林孙叶芳陈文刚
Owner XIAN REJE BIOLOGICAL TECH