Научно-технический журнал

«Onshore and offshore oil and gas well construction»

ISSN 0130-3872

Onshore and offshore oil and gas well construction
Transformation of the composition and properties of flushing liquids in the process of drill wells construction and completion

UDC: 622.323
DOI: 10.33285/0130-3872-2023-3(363)-16-24

Authors:

BRAGINA ORIANDA A.1,
NIZOVTSEV VIKTOR P.2,
VAKHROMEEV ANDREY G.1,3,4,
TASHKEVICH IVAN D.3,
SVERKUNOV SERGEI A.1,3,5

1 Institute of the Earth’s crust, Siberian branch of RAS, Irkutsk, Russia
2 Irkutsk regional public organization for the protection of consumers rights, Irkutsk, Russia
3 IRNITU, Irkutsk, Russia
4 RN-Burenie, Irkutsk, Russia
5 Irkutsk Scientific Center SB RAS, Irkutsk, Russia

Keywords: drilling fluid, water-soluble polymers, minerals, oil and gas condensate wells, technical column, Earth's crust foundation, drill cuttings

Annotation:

The results of the analysis of the composition and properties of salt-saturated polymer-containing drilling fluids used for flushing wellbores of oil, gas and gas condensate wells in the fields of the Irkutsk region are presented. The authors of the article traced the trend of these solutions parameters change under the influence of the mineral components of the rocks that make up the walls of the drilled wells during the construction of the objects under discussion – from technical columns to the foundation of the Earth's crust and subsequent conservation (liquidation) of the well. A method for preparing a clay-free salt-saturated drilling fluid has been developed. The possibility of its disposal with the secondary use of a water-soluble thickener, in particular CMC, in a new drilling fluid is shown.

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