PHPA (partially hydrolyzed polyacrylamide) drilling fluids are used in the oil and gas industry as a flocculant and a filtering agent during drilling operations. PHPA is a water-soluble polymer that is added to drilling muds to help reduce friction, increase viscosity, and prevent the loss of drilling fluids into the formation being drilled. It also helps to control the formation of clays and other solids that can interfere with drilling operations. Overall, PHPA drilling fluids help to improve the performance and efficiency of drilling operations by reducing the number of drilling fluid additives required and enhancing the quality of drilling cuttings recovery.
Polyacrylamide @9698c is the company's patented product. Can be added directly to facilitate the use of dust-free pollution. Can be widely used in oil, mining, hydrology, geology, hydropower, metallurgy and pile drilling engineering.
I.main ingredients
acrylamide and acrylic acid, and its derivatives high polymer.
II. the main ingredient molecular structure
[C2H3CONH2]m[C2H3COONa]n[C7H13NO4S]x
III. nature and use
The product is a white pellet used as a strong coating inhibitor for water-based drilling fluids. It can effectively coat drill cuttings, inhibit clay dispersion, make pulp, control the fluid loss of drilling fluid, increase the viscosity of drilling fluid, prevent bit mud packs, reduce the degree of drawing, improve the lubricity of drilling fluid, and control low density solids. growth of.
IV. the basic working principle
The long-chain molecular structure and a variety of hydration and adsorption groups can be strongly adsorbed on the surface of clay and drill cuttings, coated with drill cuttings, and block the micro cracks on drill cuttings to prevent free water from entering drill cuttings and slow down the cuttings. Hydrate expansion and spalling rate to effectively control the growth of low density solids in the drilling fluid. The same mechanism has a strong stability of the shaft wall to prevent bit mud packs and reduce the degree of pull-out during the drilling process.
V. Features
1. High molecular weight, uniform distribution of adsorption groups and hydration groups, concentrated molecular weight distribution, is a strong coating agent and inhibitor, and the product performance has reached the international advanced level.
2. Good dispersion, fast dissolution and high utility. There is no conflict with the use of solid-state control equipment, high cost performance and low cost.
3. At the same time that it has strong package inhibition, it has the ability to reduce filtration capacity, borehole stability, and the ability to lubricate drilling tools.
4. Easy to use, fast, easy to add and maintain at any time. The absence of dust pollution and the inconvenience of formulating glues are conducive to the improvement of health conditions and physical health of workers and are more environmentally friendly.
VI. use method
Add it directly to the drilling fluid or use it as a glue solution.
Recommended dosage: (volume ratio)
1. Inhibit clay dispersion, coat cuttings, control fluid loss: 0.3~1.0%
2. No solid phase drilling fluid: 0.6~1.5%
3. Isolate liquid:
0.5~1.0%
4. Mine Exploration:
0.5~1.0%
Precautions
1. For petroleum drilling fluids, which are mainly used for drilling pretreatment and maintenance in easily-dispersible formations, the first addition should be more than 0.1%. Bentonite content and addition rate should be controlled when adding drilling fluids. A high bentonite content provides a large viscosity, and if the addition rate is too high, a plug flow is easily formed.
2. Due to the large molecular weight of the product, the viscosity effect is high in systems with high solid content. It is not recommended to use it in drilling fluid systems with high density and high solids. If it is required to join, it should be tested on site. The specific dosage depends on the site. The test results will be determined.
VII. Implementation of standards and technical indicators
See test report
VIII packaging and storage
Packing: Net weight 25kg/bag or 1000KG/bag can also be packaged according to user's packaging requirements. During the storage and transportation process, high-strength extrusion should be avoided, and contact with fire sources and strong sunlight exposure for a long time should be avoided.
IX tips
If you accidentally get on your clothes or skin, use a little vinegar and clean water.