General information
Acidification mutual solvent ZX-C1-07 is a kind of acidification operation aid developed and researched in accordance with the requirements of oilfield acidification construction technology. It can reduce the adsorption loss of surfactants, make the liquid droplets formed during the acidification process easier to merge, prevent the emulsification of oil and water, accelerate backflow, maintain the water wettability of rocks, and restore or increase the permeability of the oil phase. In addition, it also has the functions of cleaning the reservoir, removing organic blockages and improving the effect of acid treatment. It has good compatibility, enabling various acidification additives to exert a synergistic effect, enhancing the efficiency of the acidification working solution and achieving the goal of increasing production.
By reducing the interfacial tension between oil and water, the adsorption amount of lipophilic surfactants on the rock surface is decreased. Its ethylene glycol components can keep the rock in a water-wetted state, inhibit the stabilization phenomenon of emulsions, and thereby improve the relative permeability of the oil and gas phase after acidification. At the same time, it promotes the synergistic effect of additives such as corrosion inhibitors and stabilizers in the acid system.
Composition
Ethylene glycol derivatives
Product properties
|
Color |
Light yellow to brown liquid |
|
Density (20℃)g/cm³ |
0.95-1.0 |
|
Surface tension, mN/m |
≤32 |
|
Mutual Solubility |
≥70 |
|
Compatibility |
good compatibility with other solvents/chemicals |
Application
Field of application
Mutual solvents ZX-C1-07 are key chemical additives used in acidification processes to improve the flow efficiency of formation fluids. Its main functions include inhibiting the adsorption behavior of surfactants on rock particles and alleviating the decline in productivity caused by changes in emulsion or wettability. This substance is mainly composed of ethylene glycol monobutyl ether and other components. It needs to be injected into the formation through the pre-liquid or post-liquid method and is applied in the acidification of carbonate rocks and sandstone.
It is mainly applied to two types of geological structures:
Carbonate rock strata: By reducing the adsorption amount of surfactants, it prevents the stable emulsification caused by the contact between acid and crude oil from blocking the pore channels.
Sandstone strata: The miscible soil acid system with the addition of butyl glycol ether effectively improves the acidification effect, mainly attributed to the ion exchange stabilizing effect of clay minerals.
The chemical compatibility of the acid system must be met:
It forms a synergistic protection with corrosion inhibitors to prevent the aggravation of corrosion of metal equipment.
It remains stable in high-temperature (up to 150℃) and high-mineralization (over 10^5mg/L) environments to prevent precipitation reactions with iron ion stabilizers.
Packing
200L steel drums or 1000L IBC or per clients' request
Storage
Avoid direct sunshine, stored inside the warehouse
Shelf life 12 month
Safety and handling
Skin Exposure: In case of contact, immediately wash skin with soap and copious amounts of water. If irritation persists, call a physician.
Eye Exposure: In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers.
If irritation persists, call a physician.
Inhalation Exposure: If inhaled, remove to fresh air. If necessary, give oxygen. Call a physician.
Oral Exposure: If swallowed, immediately wash out mouth with water provided person is conscious. Call a physician.
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