Improving energy efficiency in well construction through the use of hydrocarbon-based muds and muds with improved lubricating properties

Abstract

During the construction of directional wells in spatially curved sections of the barrel, large contact loads and huge resistance to the movement of the drill string during lifting can occur, which leads to increased wear of the drill pipes and high energy costs. One of the directions for increasing the energy efficiency of drilling such wells was the reduction of friction at the metal-metal, metal-rock, and metal-filter cake boundaries. This result can be achieved by introducing special lubricating additives or by switching to a hydrocarbon solution during drilling. The article presents the study of drilling fluids with the introduction of lubricating additives on a lubricity tester Fann EP / Lubricity Tester Model 212, a device for determining the coefficient of clay cake KTK-2, a rotary viscometer Fann 35SA, pH meter Crison GLP 21 to reduce the coefficient of friction of a pair “metal – metal” in a clay solution, which amounted to 70-75%, in an aqueous solution - up to 65%. The optimal concentration of the additive according to the study in different drilling fluids was about 1.5-2%. The results of a study of the effect of the speed and time of mixing a hydrocarbon-based solution during its preparation on the electrostability of the emulsion obtained are carried out on a BVD device, which showed a significant increase in the stability of the washing liquid to 24%, which leads to a decrease in the number of complications associated with pipe wear and a decrease torque when rotating the column.

Technology for Improving the Efficiency of Fractured Reservoir Development Using Gel-Forming Compositions

“…Further research will focus on the development of a technology for the joint use of the developed water shut-off composition and emulsion liquid packer, including the determination of the optimal composition and rheological properties [39][40][41][42][43] of the liquid packer.…”

“…Further research will focus on the development of a technology for the joint use of the developed water shut-off composition and emulsion liquid packer, including the determination of the optimal composition and rheological properties [39][40][41][42][43] of the liquid packer. During the third stage, a breaker fluid is injected to destroy the gel in the wellbore (to prevent the formation of "hydraulic gates") and gel formed in oil-saturated intervals [38].…”

COVID-19 crisis impact on the stability between parties in crowdfunding and crowdsourcing

“…Practice shows that failure of many crowdfunding campaigns is due to setting of inadequate tasks or a complex return mechanism [4]. Recent studies have shown that crowd's motives for participating in various forms of crowdsourcing initiatives may vary [5]. Studies on popular European crowdfunding platforms show that crowdfunding not only feeds technology startups but also serves a new source of finance for the existing companies and firms [1].…”