Relation between molecular structure of polyethylene oxide solutions and drag reduction

Povkh, I. L.; Pogrebnyak, V. G.; Toryanik, A. I.

doi:10.1007/bf00860980

Cited by 5 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicates the relevance of research on the anomalous phenomenon of the high destructive capacity of a water-polymer jet. According to the results of the review of convergent 4 and turbulent flows of polymer solutions 12 and the use of polymer additives in cutting materials, 13,14 it has been established that the process of perforating oil and gas well casing strings with a stream of polymer solution requires further study. It becomes obvious that the development of a highly efficient process for hydro perforating oil and gas well casing strings can be approached using features of the hydrodynamic behaviour of polymer solutions observed in a longitudinal flow, which occurs in the inlet section of hydro perforator nozzles.…”

Section: Trends In Petroleum Engineeringmentioning

confidence: 99%

The Water-Polymer Method of Hydroperforation of Oil and Gas wells

Pogrebnyak¹

2023

TPE

View full text Add to dashboard Cite

The aim of the study is to develop an efficient, innovative method of perforating oil and gas well casing strings with a high-velocity stream of polymer solution that conserves resources and energy and meets the requirements for environ- mentally friendly hydrocarbon production. New knowledge about the dynamics of polymer solutions in the model conditions of flow through the nozzles of the hydro perforator, which form a high-velocity jet, became the main scientific basis for substantiating the water-polymer method of hydro perforation of oil and gas wells. The study of the reaction of polymer solutions to tension hydrodynamic influence allowed to formulate a structural concept, the "common denominator" of which is the strong deformation effect of tension hydrodynamic field on high molecular weight coils, which, according to nonequilibrium thermodynamics, should cause a kind of high elasticity. Peculiarities of hydrodynamic behavior of aqueous polymer solutions in model conditions of flow through jet-forming nozzles are studied. The possibility of transition to a highly developed state of the tangle of polyethylene oxide macromolecules in the conditions of the inlet section of the nozzle of the hydro perforator has been experimentally proved. The mechanism of perforation of oil and gas wells by a high-velocity jet of an aqueous polymer solution has been elucidated. It is proved that the mechanism of the high cutting ability of the high-velocity jet of aqueous polymer solution is the destructive effect of the dynamic pressure of water-polymer jet "reinforced" by highly developed macromolecular chains in the inlet nozzles of the hydro perforator nozzles under the action of tensile leakage. Experimental and industrial testing of the method of perforation of wells by a high-speed jet of an aqueous solution of polyethylene oxide confirmed the practical and economic feasibility of its use.

show abstract

Section: Trends In Petroleum Engineeringmentioning

confidence: 99%