1.Sodium Carboxymethyl Cellulose（CMC） for Oil drilling Industry

　　Sodium Carboxymethyl Cellulose is widely used in drilling project.

　　“YUYU” Introduction to Oil Drilling CMC，“YUYU”  CMC oilfield grade is divided into LV and HV（HV）。

　　Slurry with CMC would form thin but hard filter cake with low permeability, reducing water loss. Adding CMC into slurry will endow the drill with low initial gel strength, making the slurry give off the gas inside and abandoning the waste into the slurry pit. Same as other suspending dispersion, the drill slurry has an existing period which will be stable and extended after adding CMC.

　　Slurry with CMC is seldom affected by the bacterium and requires no high PH value or corrosion resistant.

　　Slurry with CMC has excellent stability and will still reduce the filtration loss under 150℃ or above.

　　2.Commodity Name: Sodium Carboxymethyl cellulose

　　CAS No.: 【9004-32-4】

　　Molecular formula :［C6H7O2（OH）2OCH2COONa］n

　　Synonyms: Carboxymethyl Cellulose, Carboxy Methyl Cellulose, CMC, Sodium CMC, Na-CMC

　　HS Code: 39123100

　　3.Description

　　Sodium Carboxymethyl Cellulose is a cellulose derivative with carboxymethyl groups bound to some of the hydroxyl groups of the glucopyranose monomers that make up the cellulose backbone. It is often used as its sodium salt, sodium carboxymethyl cellulose.

　　4.Type and Specifications

　　1）Technical LV CMC

　　Models, quality indicators （meeting standard: GB/T 5005-2010 and API 13A）

　　2）Technical HV CMC

　　Models, quality indicators （meeting standard: GB/T 5005-2010 and API 13A）

　　5.Properties

　　Drilling and completion fluids technology are an important part of oil drilling project, it plays a key role in ensuring safety, quality and fast drilling of drilling project. Cellulose ethers is one of the disposal agent, it is used to adjust drilling and completion fluids, its main function is reducing filtrate loss and thickener.

　　CMC and PAC can formed a thicker absorption solvent layer with the soil particles surface which exist in the drilling fluid to enhance coalescence stability of the system; the charges on particles surface are increased through the absorption of clay surface, in order to reduce the electrostatic attraction between the particles role; the permeability of mud cake can be reduced by increasing the viscosity of filtrate and plugging holes function.

　　CMC spread easily in all water-based drilling fluid，it can be applied to the fresh water and saturation salt water drilling. In the low solid phase and no solid-phase drilling fluid, it can significantly reduce the amount of filtration loss and thinning thickness of the mud cake, and strongly restrain shale hydration.?

　　Our company's “YUYU” CMC have strong water-soluble, good anti-salt, anti-calcium and magnesium, reduce filtration loss capacity, because we adopt special processing technology to produce CMC, it can be applied to different drilling fluid system , Especially in salt water drilling, seawater drilling, saturation salt water drilling, and all have a very good role in filtration loss. Compared to the CMC which produced by conventional process, it has the following characteristics:

　　（1） Uniform D.S, good transparency, controllable viscosity and filtration loss;

　　（2） Fit for water-based mud of fresh water, seawater and saturation salt water;

　　（3） Confected mud has good characteristic in reducing filtration loss, restraining and enduring high temperature;

　　（4） Confected mud has good rheology, it can restrain the dispersion and expansion of shale and clay in the high-salt medium, so that the pollution of the wall of a well under controlling;

　　（5） Made the soft soil structure stability to prevent the collapse of the wall;?

　　（6） Slowed down the accumulate of solids in the mud, when well-drill get across the rock face;

　　（7） Restrained the turbulence in drill pipe, so that the circumfluence system can maintain a minimum pressure loss;

　　（8） Enhanced the yield of clay of the mud, reduced the filtration loss;

　　（9） Obtained stable foam mud.?

　　In order to promote product development, and research the application of PAC & CMC in drilling and completion drilling fluids, our company unfolded a series of oil application experiments, which were applied to test the application performance of products and develop new products.

　　6.Characteristics

　　It is a cost effective additive used as a fluid loss reducer in fresh water and brackish water systems. It is used to control fluid loss in dispersed and non dispersed drilling fluids.

　　1）high degree of substitution, good uniformity of substitution .

　　2）high transparency, viscosity and water loss can be controlled .

　　3）suitable for fresh water, sea water, saturated brine slurry .

　　4）stabilize soft soil structure, prevent collapse of wall of a well .

　　5）can improve mud-making volum, reduce filteration loss .

　　6）has excellent performance in drilling of oil .

　　7.Advantages

　　Widely available and low cost polymer for fluid Loss control.

　　It is an effective at providing filtration control in most water based drilling fluids.

　　It is effective in low concentrations.

　　It is Non–Toxic.

　　It is not subjected to bacterial fermentation and calcium contamination.

　　Can be sed Fluid systems.

　　8.Package

　　Packing:25kg kraft paper bag, or other packing as clients request.

　　9.Storage

　　1.Store in a cool, dry, clean, ventilated environment.

　　2. Material must be handled as a Industrial chemical, wearing protective equipment and observing the precautions as mentioned in the MSDS.

　　3. Since the date of production, a preservation period should not exceed 4 years for the industrial product and 2 year for the product。

　　4. The products should be prevented from water and package bag damaging during transportation.