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

Oilfield underground slow-released scale and corrosion inhibitor and production process thereof

A scale and corrosion inhibitor, slow-release technology, applied in the direction of wellbore/well components, drilling composition, earthwork drilling and production, etc., can solve the problem of scaling and corrosion of oil production equipment, anti-scaling without corrosion inhibition, and affecting oil recovery To solve problems such as the normal operation of equipment and oil transportation equipment, to achieve the effect of improving water resistance and stability, and increasing the degree of tightness

Inactive Publication Date: 2019-01-04
北京华旭起源科技有限公司
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of my country's oilfields have entered the mid-to-late production stage of water flooding or chemical flooding. The oxidation and corrosion of free oxygen in the produced fluid and the enrichment and scaling of scale-forming ions will cause scaling and corrosion of oil production equipment, seriously affecting oil production equipment and oil transportation. For the normal operation of the equipment, a lot of manpower and financial resources have to be invested in maintenance. Frequent maintenance not only requires high costs, but also needs to stop production
[0003] Traditionally used corrosion and scale inhibitors have single performance, corrosion inhibition does not prevent scale, scale prevention does not inhibit corrosion
When using liquid scale and corrosion inhibitors, it needs manpower for continuous filling and needs to be equipped with a specific dosing device, which has problems such as short action period, limited effect, and large investment; the current organic scale and corrosion inhibitors require specific polymers The skeleton is expensive, and the effective substances added will cause problems such as difficult separation from crude oil

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

[0022] Weigh 42kg of quartz sand, 36kg of soda ash, 10kg of sodium salt, 4kg of potassium salt, 3kg of each of zinc salt and aluminum salt, and 2kg of borax, mix well, feed at 1300°C, and undergo slow melting from solid phase to liquid phase process, after which the temperature is increased to 1450°C, undergoes clarification and homogenization process under the action of clarifier, removes streaks, air bubbles and inhomogeneities, then cools down to 450°C and injects into the mold for molding, the molding size is Φ58×φ30×110mm The formed product is placed in an annealing furnace for annealing. In the annealing furnace, the formed product is first heated to a temperature slightly higher than the strain point temperature, and then annealed at three different temperatures of 530, 470, and 420°C. Under the condition of each annealing 8h, and then cooled to room temperature to take out the product.

Embodiment 2

[0024] Weigh 38kg of quartz sand, 38kg of soda ash, 10kg of sodium salt, 2kg of potassium salt, 4kg of zinc salt, 5kg of aluminum salt and 3kg of borax, mix them well, feed them at 1200°C, and undergo slow melting from solid phase to liquid phase process, then raise the temperature to 1400°C, undergo clarification and homogenization under the action of clarifier, remove streaks, bubbles and inhomogeneities, then cool down to 400°C and inject into mold molding, the molding size is Φ72×φ30×110mm The formed product is placed in an annealing furnace for annealing. In the annealing furnace, the formed product is first heated to a temperature slightly higher than the strain point temperature, and then annealed at three different temperatures of 550, 500, and 400°C. Each annealed under the conditions for 14h, and then cooled to room temperature to take out the product.

Embodiment 3

[0026] Weigh 39kg of quartz sand, 32kg of soda ash, 15kg of sodium salt, 2kg of potassium salt, 5kg of zinc salt, 4kg of aluminum salt and 3kg of borax, mix them well, feed them at 1300°C, and undergo slow melting from solid phase to liquid phase process, then raise the temperature to 1400°C, undergo clarification and homogenization in the presence of clarifiers, remove streaks, bubbles and inhomogeneities, then cool down to 400°C and inject into mold molding, the molding size is Φ72×φ30×110mm The formed product is placed in an annealing furnace for annealing. In the annealing furnace, the formed product is first heated to a temperature slightly higher than the strain point temperature, and then annealed at three different annealing temperatures of 550, 480, and 400°C. Each annealed under the conditions for 14h, and then cooled to room temperature to take out the product.

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 an oilfield underground slow-released scale and corrosion inhibitor and a production process thereof. The production process includes proportionally mixing quartz sand, sodium carbonate, sodium salt, potassium salt, zinc salt, aluminum salt and borax, converting solid phase into liquid phase at the temperature of 1200 to 1450 DEG C, clearing and homogenizing, cooling and molding, annealing to remove thermal stress to obtain the slow-released scale and corrosion inhibitor. The product is applied in an oilfield underground oil-well tubing tail casing, and directly acts onan oil well tubing and an oil well pump after being dissolved by media slowly to reduce scale and corrosion of the oil well tubing and the oil well pump and keep normal running of oil production and delivery equipment, solves the problems such as short service cycle, complex operation, high labor force and needing continuous adding of the conventional products, and is a multifunctional product with slow releasing and scale and corrosion inhibiting property. As the product is prepared from inorganic substances as the main component, the product has stable performance, is free of toxin, smell and pollution and has no affection to underground devices and environment; raw materials for preparing the product is rich in source, the production technology of the product is mature, and the requirements on production in batch can be met.

Description

technical field [0001] The invention provides an oilfield downhole slow-release scale and corrosion inhibitor and a production process thereof, and relates to the technical field of preparing slow-release scale and corrosion inhibitors by utilizing inorganic substances and chemical treatment of water in oil production wells. Background technique [0002] Most of my country's oilfields have entered the mid-to-late production stage of water flooding or chemical flooding. The oxidation and corrosion of free oxygen in the produced fluid and the enrichment and scaling of scale-forming ions will cause scaling and corrosion of oil production equipment, seriously affecting oil production equipment and oil transportation. For the normal operation of the equipment, a lot of manpower and financial resources have to be invested in maintenance. Frequent maintenance not only requires high expenses, but also needs to stop production. [0003] Traditionally used corrosion and scale inhibitor...

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): C09K8/52C09K8/54C23F11/18
CPCC09K8/54C09K8/52C23F11/187
Inventor 邓春光刘莉朱建华张帅唐正轶
Owner 北京华旭起源科技有限公司