Simulation of formation fluid withdrawal hydrodynamics using a downhole jet pump when studying the productive formation while well drilling

Abstract

The article discusses hydrodynamics of the reservoir fluid withdrawal from the promising drilled formation interval with the use of a jet pump installed in the internal cavity of the drill pipe string in the wellbore bottom-hole part. The hydrodynamic problem of fluid production is solved. The solution connects the dynamics of injected, recoverable and upward flows of the circulating system.

Modeling of geological and technical measures based on drilling a well with modified valve assembly parameters

“…Every year, dozens of activities are carried out at each oil field in order to regulate its development and maintain target oil production levels. This set of works is called geological and technical measures (hereinafter GTM), the implementation of which ensures the fulfillment of design indicators in order to regulate and continuously manage field development and maintain target oil production levels [11][12][13][14].…”

On the issue of improving the technical and economic indicators of well wiring in difficult mining and geological conditions

“…However, when passing intervals with frequent layering in strength and hardness of rock interlayers, powerful vibrations and shocks are created at the bottom, transmitted to the entire string of drill pipes and leading to a spread in torque, impact wear of the cutters and the body of a standard PDC bit (Figure 1) [5][6][7][8]. In addition, premature wear of downhole motors and other elements of the BHA occurs, as well as an abrupt change in pressure in the circulation system of the drilling rig [9].…”