Synthesis and process of sulphonated asphalt powder product: Sulphonated asphalt is an anionic polymer that is sulphonated, emulsified and other chemically treated asphalt materials.
Product performance and quality index: Its basic raw material is petroleum asphalt. The appearance is brown flowing powder. Sulphonated asphalt contains high water-soluble components and certain oil soluble components, and has excellent emulsification performance. It is applicable to various drilling fluid systems.
Application of sulphonated asphalt powder:
Because sulphonated asphalt contains sulphonic acid group, its hydration is very strong. When it is adsorbed on the shale interface, it can prevent shale particles from being hydrated and dispersed to prevent collapse. At the same time, the part insoluble in water can fill the pore throat and fracture to play a role in plugging, and can cover the shale interface to improve the mud cake quality. The sulfonated asphalt also plays a role in lubricating and reducing high-temperature and high-pressure filtration in drilling fluid.
1. It is a multifunctional organic drilling fluid treatment agent for plugging, collapse prevention, lubrication, drag reduction and inhibition.
2. Lubrication and drag reduction, reducing the lifting capacity of drilling tools and torque, extending the service life of the drill bit, preventing and removing the stuck drill;
3. The thin and tough mud cake is formed to strengthen the well wall. Control high temperature water loss;
4. Control the high-temperature shear strength of mud;
5. It can be used in combination with other mud treatment agents. The recommended dosage is 1-6%.
Asphalt is a dark brown complex mixture composed of hydrocarbons with different molecular weights and their non-metallic derivatives. It is a kind of high viscosity organic liquid, liquid, black on the surface, and soluble in carbon disulfide.
Asphalt is a kind of waterproof, moisture-proof and anti-corrosion organic cementing material. Asphalt can be mainly divided into coal tar asphalt, petroleum asphalt and natural asphalt. Among them, coal tar asphalt is a by-product of coking.
