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The application of PAC and CMC in oilfield

The application of PAC and CMC in oilfield

PAC.jpg​

一,The role of PAC and CMC in oilfield is as follows:



1. The mud containing PAC and CMC can make the shaft wall form thin and strong filter cake with low permeability, so that the water loss is reduced;



2, after adding PAC and CMC in the mud, can make the drilling machine get low initial cutting force, make the mud is easy to release the gas wrapped in it, at the same time, the debris quickly abandoned in the mud pit;



3. Drilling mud, like other suspended dispersions, has a certain existence period. Adding PAC and CMC can make it stable and prolong the existence period.

The application of PAC and CMC in oilfield

PAC.jpg

一,The role of PAC and CMC in oilfield is as follows:


1. The mud containing PAC and CMC can make the shaft wall form thin and strong filter cake with low permeability, so that the water loss is reduced;

2, after adding PAC and CMC in the mud, can make the drilling machine get low initial cutting force, make the mud is easy to release the gas wrapped in it, at the same time, the debris quickly abandoned in the mud pit;

3. Drilling mud, like other suspended dispersions, has a certain existence period. Adding PAC and CMC can make it stable and prolong the existence period.


二, PAC and CMC in the oilfield application has the following excellent performance:


1. High degree of substitution, good uniformity of substitution, high viscosity, low dosage, effectively improve the use efficiency of mud;

2, good moisture resistance, salt resistance, alkali resistance, suitable for fresh water, sea water, saturated salt water based mud;

3. The mud cake formed is of good quality and stable, which can effectively stabilize the soft soil structure and prevent the borehole collapse;

4, suitable for solid content is difficult to control, a wide range of mud system.


三,CMC and PAC in oil drilling application characteristics:

1.High water loss control ability, especially the efficient loss agent, at a lower amount, can control the water loss at a higher level, without affecting the other properties of the mud;

2. Good temperature resistance, and salt resistance to superior, under a certain salt concentration, still can have a good water loss ability and a certain rheology, in soluble in salt water to soluble in water ratio, viscosity is almost unchanged, especially suitable for offshore drilling and deep well requirements;

3. Can well control the rheology of mud, with good thixotropy, suitable for any water-based mud in fresh water, sea water, saturated salt water;

4. In addition, PAC is used as cementing fluid to prevent fluid from entering pores and fractures;

5. The pressure filtrate configured with PAC can withstand 2%KCL solution (which must be added when the pressure filtrate is configured) and has good solubility, easy to use, can be prepared on site, and the gel speed is fast, and the ability to carry sand is strong. When used in the formation of low permeability pressure, its pressure filtration effect is more excellent.


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The application of PAC and CMC in oilfield
The application of PAC and CMC in oilfield

The application of PAC and CMC in oilfield

PAC.jpg​

一,The role of PAC and CMC in oilfield is as follows:



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