DOI: https://doi.org/10.36719/2789-6919/54/145-149
Rafig Ibrahimov
Azerbaijan State Oil and Industrial University
PhD in Engineering
https://orcid.org/0000-0002-1093-6369
rafiq.ibrahimov@yahoo.com
Agha Gurbanov
Azerbaijan State Oil and Industrial University
Master's student
https://orcid.org/0009-0003-5966-5509
aqa.qurbanov2002@gmail.com
Well Research to Prevent Solution Loss and
Influence Wall Stability
Abstract
Drilling fluid is a key safety and operational fluid in oil and gas wells. Its main functions are to maintain wellbore pressure, cool and lubricate the drilling tool, and remove rock fragments.
However, the most serious problem in drilling fluid management is fluid loss, which is the leakage of fluid into subsurface rock layers through cracks, fractures, and high-porosity zones. Fluid loss occurs when the hydrostatic pressure exceeds the hydraulic fracturing pressure of the formation. This situation causes a decrease in wellbore pressure, collapse of the wellbore walls, and uncontrolled gushing, posing a serious threat to both workers and the environment.
The economic impact of fluid loss is also significant, as each liter of fluid that leaks must be re-prepared and injected into the well, which increases costs and delays the project schedule. To minimize fluid loss, the hydrostatic pressure must be higher than the formation pressure but lower than the formation fracturing pressure. This approach preserves the integrity of the well wall and ensures the safety of the drilling operation. The article analyzes the mechanisms of mud loss, optimal engineering calculations and environmental risks.
Keywords: drilling mud, mud loss, drilling process, mud circulation, downhole pressure