Oilfield downhole solid anti-scaling agent and its production technology

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] ...