The effect of 1,6-hexamethylenediamine on thermal stability and shale cutting recovery of heavy weight drilling fluids

Abstract

The capability of drilling fluid to endure high temperature and stabilize shale cuttings is important characteristics of drilling fluids. In this work, a combination of 1,6-hexamethylenediamine and polyanionic cellulose (PAC) was tested to observe the impact of 1,6-hexamethylenediamine on thermal stability of PAC and its influence on the shale cutting stability of drilling fluid. First, rheological parameters and filtration control were examined at four different temperatures (325 °F, 350 °F, 375 °F, and 400 °F). Then, the cutting disintegration test was performed at 250 °F to evaluate the effect of 1,6-hexamethylenediamine on shale cutting stability. Experimental results showed that adding 1,6-hexamethylenediamine to drilling fluids effectively increases the thermal stability of the rheological parameters of drilling fluids such as apparent viscosity, plastic viscosity, yield point, and gel strength up to 350 °F. It was also concluded that when 1,6-hexamethylenediamine is added to drilling fluid, the amount of fluid loss is in acceptable range up to 375 °F. Finally, the results indicated that 1,6-hexamethylenediamine significantly increases the shale cutting recovery.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Impact of organophilic clay on rheological properties of gasoil-based drilling muds

“…Drilling muds are used in particular for petroleum drilling and natural gas drilling, but also for simpler drilling, for example intended to produce drinking water. Drilling muds perform several functions, such as cleaning the well, keeping the cuttings in suspension, cooling and lubricating the tool and obtaining information on the nature of the formation drilled by raising the cuttings from the bottom to the surface (Agin et al 2019;Ibrahim et al 2017;Medhi et al 2020;Salehnezhad et al 2019;Stuckman et al 2019). Drilling muds are classified into two main categories: water-based muds and oil-based muds (Coussot et al 2004;Gbadamosi et al 2019).…”