«Oilfield engineering»

Selection of the methods for assessing the process fluids influence on argillites stability when drilling wells

UDC: 622.245.6
DOI: 10.33285/0207-2351-2023-8(656)-5-11

Authors:

¹ Samara NIPIneft, Samarа, Russia
² Samara State Technical University
³ RN-BashNIPIneft, Ufa, Russia
⁴ RN-Center for Expert Support and Technical Developement, Tyumen, Russia

Keywords: strengthening compositions, filtration in low-permeability rocks, stability of mudstones, assessment of reinforcing properties, development of laboratory research methods

Annotation:

In spite of the big amount of researches, today there isn`t any laboratory method that can estimate the impact of drilling fluids, technological fluids and their filtrates on rocks, disposed to caving formation, stability and that can help to choose the composition the effect of which on rock natural destabilization will be minimal. The absence of reliable laboratory estimation methods of filtrate interaction with low permeable rocks that tend to collapse is the motivation for search of new experimental techniques.

The article considers some approaches to rocks stability estimation after their interaction with drilling and technological fluids.

The studies were carried out with different types of drilling fluids and compositions for local use as a separately fixed strengthening composition in the interval of mudstones presence.

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