... Abstract This study focuses on the ability of complex colloidal solution to stabilize a heavy oil-brine Pickering emulsion by changing the activity at the interface between heavy oil and brine. After testing many different combinations of anionic and cationic surfactants and nano-particles, we...

... applied are grouped in four group types, against which the field on evaluation is compared. There is also a numerical simulation in 1D – 2D, where the injectivity with or without pressurization is evaluated, as well as the displacement stability. Additionally a multi-criteria evaluation method is used...

... of Geomechanics, recognizing its importance in every operation of hydrocarbons exploitation, from drilling to production. There are specific applications in the early stage of exploitation, e.g. with respect to wellbore stability, sand production, hydraulic fracturing, traversing depleted zones, characterization...

... well design pressure measurement stability spe 158548 formation pressure estimation minimum horizontal stress dolphin deep estimation greater dolphin area society of petroleum engineers Introduction The Greater Dolphin Area on the east coast of Trinidad and Tobago ( Figure 1 ) has...

... Table 1 Foam as fracturing fluid [ 1 ] Desirable properties of frac fluid Check list (foam as fracturing fluid) 1. Low fluid loss. ✓ 2. Sufficiently high effective viscosity. ✓ 3. Low friction pressures. ✓ 4. Temperature stability. • 5. Shear stability. • 6. Low...

... The relationship between disjoining pressure and film thickness is known as disjoining pressure isotherm. The shape of the disjoining pressure isotherm governs the equilibrium film states and their stability. It is stated that the wetting film is stable if: (1) π ( h ) > 0   a n...

...Viscosity Procedure Viscosities of base oils and base oil blends were measured with a Brookfield Model LVDV-III+ viscometer using an LV4 spindle. One strategy employed to overcome the disadvantages of esters has been to select esters with greater temperature stability and lower viscosity...