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Oilfield downhole solid anti-scaling agent and its production technology

An anti-scaling agent, technology for oilfield wells, applied in descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc. Loss and waste of chemicals

Inactive Publication Date: 2004-11-17
CHANGCHUN JIEYI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a solid anti-scaling agent for downhole oil fields, which overcomes the problems of complex operation process, unsatisfactory release speed and corrosion speed, and loss and waste of the existing liquid or powder anti-scaling agent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take 30kg of silica, 32kg of sodium carbonate, 16kg of sodium tripolyphosphate, 11kg of potassium sulfate, 2kg of aluminum oxide, and 1kg of borax, mix them evenly, put them into a high-temperature furnace, heat at 1450°C for 4 hours, pour them into a mold in a molten state, and cast After forming a hollow round rod with an inner diameter of 25mm and an outer diameter of 73mm or 200mm, put it into an annealing mold, anneal in a tunnel kiln, control the temperature from 460 to 420°C, and anneal to normal temperature after 24 hours to make the product of the present invention .

Embodiment 2

[0041] Silica 38kg, sodium carbonate 38kg, sodium tripolyphosphate 18kg, Na 2 CO 3 11kg, 3kg of aluminum oxide, and 1kg of borax are mixed and put into a high-temperature furnace at 1500°C, melted and heated for 6 hours, poured into a mold to form, put into an annealing mold, and annealed in a tunnel kiln. 420°C, annealed for 30 hours and then returned to normal temperature to make the product of the present invention.

Embodiment 3

[0043] Silica 16kg, sodium carbonate 35kg, sodium trimer 16kg, Na 5 P 3 o 1011kg, 2kg of aluminum oxide, and 1.5kg of borax were mixed and put into a high-temperature furnace at 1500°C, melted and heated for 6 hours, poured into a mold for molding, put into an annealing mold, annealed in a tunnel kiln, and controlled temperature 460 to slowly drop to 420°C, annealed for 38 hours and then returned to normal temperature to produce the product of the present invention.

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PUM

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Abstract

The invention relates to an oil field down-hole antiscaling agent and its preparing process which comprises, weighing silica, sodium carbonate, sodium tripolyphosphate, alkali metal salt, alumina, and tinkalite, mixing homogeneously, throwing into 1000 deg. C - 1500 deg. C sintering furnace for agglomeration, transforming the raw material from solid phase to liquid phase, and feeding into die arrangement for modeling, distressing through heat treatment by kiln, modeling to obtain the vitrified solid antiscaling product capable of dissolving slowly.

Description

Technical field: [0001] The invention provides an oilfield downhole solid antiscaling agent and a production process, which is an improvement to the existing liquid or powder antiscaling agent and belongs to the technical field of water chemical treatment for oil wells. Background technique: [0002] At present, liquid or powder antiscalants are mostly used in oil production pipelines in oil fields to prevent the rotors of oil production pumps from scaling. The process of liquid or powder antiscalants is complicated, the equipment is huge, and the antiscalants are lost with the production fluid. , the cost of anti-scaling is higher, and the effect is not ideal. The inventor's invention patent (patent application number: 00123350.5) discloses a "solid antiscaling agent for downhole oil field", which has a good effect of descaling and antiscaling, but its release rate and corrosion rate are not ideal, respectively ≤0.007 g / m 2 h, ≤0.016gm 2 h. Invention content: [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/00
Inventor 韩冰馥
Owner CHANGCHUN JIEYI IND
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