The results of investigations of the two samples of reagents carboxymethyl starch (KMC) and one sample of carboxymethylcellulose sodium technical grade CMC-9/N, the production of LLP “Cellulose Ethers” (Vladimir) for mining and geological, technical and technological conditions of the November oil and gas region of Western Siberia.

The first batch of CMC did not meet the quality performance indicators TU 6-55-221-1396-95, namely the nature of the dissolution. The kinematic viscosity of a 1% aqueous solution of the sample in the CMC received the order before production batch. Consequently KMC also differs from all test samples before KMC to influence the rheological, mechanical and structural properties of drilling fluids, the number of additives in muds. Recommended additives in this mud sample KMC should be increased by 1% or more.

Another sample corresponds to the KVM presented quality indicators for TU 6-55-221-1396-95 and refers to the high viscosity grades. This part can be used as structurant in formulations of drilling mud during drilling for conductor in an amount of 0.2-0.3%.

Experimental test CMC 9 / N corresponds to the data presented by advertising and a brand of low viscosity CMC. This grade CMC 9 / N can be used as a structurant in a composition of bentonite fluids while drilling a conductor in an amount of 0.3% or more, and drilling a main wellbore production tubing in an amount of not less than 0.5%.