Remedial well treatment Additives

Neutral Scale Inhibitor

1)Introduction

The descaling of the reservoir is achieved through the effects of penetration, solubilization, chain scission, complexation, and dispersion. Starting from the perspective of rock pore structure, the purpose is to expand the pore throat and improve the permeability of the reservoir.

2)Technical parameters

3)What it replaces

Conventional acid plug remover, which is corrosive to pipes.

4)Advantages

• The neutral scale remover react with asphalt scale, polymer scale, scale and rust scale in the oilfield formation 

• It is dissolved in a way of looseness, dispersion and penetration. when reacting with scale,

• pH value 5.0～6.5, non-toxic, tasteless, non-flammable and non-explosive.

• Corrosion rate of N80, L80, P110, A3, 20#, stainless steel, brass, copper and aluminum <0.5g/(m2·h).

• Does not contain H+、Cl-、F-、S2-、SO42-、PO43-etc., and does not contain toxic and hazardous substances and ions

• Has a good ability to prevent clay expansion

Non-solid Phase Multifunctional Plugging Agent

1)Introduction

Solid-free multifunctional plugging agent is a kind of solid-free, low-density, high-strength multifunctional plugging agent. It can be used for casing damage plugging.

2)Technical parameters

3)What it replaces 

• Conventional cement plugging agent has poor chemical stability, not acid resistance, and complicated construction process;

• Conventional thermosetting resin with high construction risk and poor injectability

• Low hydrogel strength, poor retention, and poor chemical stability

4)Advantages

• Good strength

• Simple construction process

• Good acid resistance

• Good injectability

• Adjustable toughness

Polymer Deblocking Agent

1) Introduction

The main agent is a strong penetrating agent, and the auxiliary agent is a polymerization inhibitor, an antioxidant, and a stabilizer. It can make the high molecular polyacrylamide polymer chain scission into small molecules, and the viscosity is reduced and easy to flow back. The additive can prevent the repolymerization of small molecules, and can be adsorbed on the surface of steel to form an anti-oxidative film, preventing the corrosion of construction machinery, pipelines and oil wells by the unblocking working fluid.

2) Technical parameters

3) What it replaces

Common breakers, such as peroxides;

4) Advantages

• Effective breaker for polymer nanospheres

• Effective breaker for micron-sized PEG gel

• Effective breaker for polymer gel