Student works

185 Oil and gas engineering and technologies

Master

Optimization of drilling fluid parameters for complex geological conditions

Loboda, S.V.

The qualification work revealed trends in the complication of mining and geological drilling conditions, which is associated with the gradual transition to the development of deeper layers and deposits with atypical physicochemical characteristics of rocks.
Analysis of the production activities of the Ukrburgaz Oil and Gas Company shows a stable trend towards intensification of drilling operations, accompanied by
a gradual increase in the average depth of well construction from 2866 to 3044 m.
It was established that despite the relatively small step in increasing the depth, construction conditions remain difficult due to the heterogeneity of the geological
section of the main oil and gas-bearing regions.
A methodology for selecting the type of drilling rig when drilling in clayey deposits is proposed, which will allow for successful, accident-free construction of wells in deposits, which is based on the analysis of the values of the fluidity and plasticity indicators of the rocks being drilled.
The economic efficiency of using the drilling fluid selection methodology has been proven, allowing to reduce the total costs of providing reagents by an average of 15–20% compared to standard industry schemes. Savings on the
purchase and use of reagents range from 45.4 to 730 thousand UAH for every 100 mі of finished solution.

свердловини

гірські породи

drilling mud

well

mountain rock