SU1447832A1 - Agent for treating drilling muds - Google Patents

Abstract

The invention relates to the drilling of oil and gas wells and improves the ability of the reagent to improve the inhibiting properties of the drilling fluid. The reagent has the following ratio of ingredients, May. %: soot 10-20, organic reagent 10-40, oil else. As an organic reagent, it contains a humate or ligno-sulphonate, or polysaccharide, or polyphenol reagent, or a reagent based on oxidized lignin. Soot is obtained as a marketable product in the incomplete combustion of hydrocarbon gases. As a petroleum product, m. oil, diesel fuel, bitumen, etc. are used. The method as compared with the known one makes it possible to increase the drilling rate by 1.1-1.15 times in complicated intervals. 1 tab. (L

Description

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The invention relates to the drilling of oil and gas wells, and in particular to compositions for the treatment of drilling fluids.

The aim of the invention is to improve the ability of the mud to improve the properties of the drilling fluid.

Reagent for the treatment of drilling fluid includes petroleum, carbon black and condensed sulfite-alcohol bard (FSC) with the following ratio of ingredients, wt.%:

SazhtO-20

Organic

cue reagent 10-40

Oil productsEverything

 As organic reagents, humate reagents, lignosulphonate, reagents based on oxidized lignins, polysaccharides, polyphenol reagents, acrylic polymers can be used. Gas soot in the floor is used in a vvde commercial product with non-solid combustion of hydrocarbon gases. As oil, you can use crude oil, diesel fuel, bitumen, distilled off, etc. For better emulsification in drilling mud, anionic surfactant, such as sulfanol, can be added to the resulting mixtures.

The reagent is prepared in a mixing device in the following way: c. , 70 g of oil are added with stirring, 20 g of carbon black and 10 g of constants are added. Dispersing this mixture takes 30 minutes, then the finished lubricant composition is introduced into the drilling fluid.

Evaluation of the effect of the prepared compositions; drilling fluids were produced by studying the technological parameters, as well as the sticky characteristics of drilling fluids (, o), filter cake

(G), the inhibiting properties of solutions were evaluated by the magnitude of the capstryl filtration (8.).

The table shows the dependence of the technological parameters of drilling fluids on the quantitative ratio of the ingredients in the reagent.

It can be seen from the table that the introduction of organic reagents significantly reduces capillary filtration, thereby providing a lower degree of removal of rocks, preventing their swelling and shedding.

This agent significantly increases the inhibitory properties of drilling fluids, reduces the rate of capillary moistening once the rock has drilled and the stickiness of the drilling fluids, which reduces the complications associated with the instability of the borehole walls. All this increases by 1.10-1, t5 times the commercial speed of drilling in complicated intals.

Claims (1)

1. Reagent for the treatment of drilling fluids, including oil and carbon black, which differs in that, in order to improve its ability to improve the inhibiting properties of the drilling mud, it additionally contains an organic reagent at the following ratio of ingredients, wt.% Soot 10-26 Organic reagent10-40 Oil Product Else 2, the reagent according to claim 1, characterized in that it contains, as an organic reagent, a humate or lignosulfonate, or polysaccharide, or polyphenol reagent, shsh reagent based on oxidized lignin. 00 I I about I I I I I I I I I I I 1 oCh-CN tn tr youn U-1 f fO with BUT g oo m sT 1L " v Cvj m - in tM sch SP with go M m with l about g- o 00 (T. 00 oo "M with 00 eat with eat with m about eat about y D fO "" Oi k CO  sr M CM 1L " - " “H CM CM M "k nin A "k cn about "K t t k MF 4t A in t SL o00 A "t "K" i fk "k SCJ t-.o Mt in M "k nm YU vO in vO O Wd vO