Downhole pumping ring and downhole pumping device

Abstract

The invention discloses a downhole pumping ring and a downhole pumping device, which are used to be arranged on the outer surface of the main body of the pumping part, including a ring-shaped main body with an overall ring-shaped structure, and the inner surface of one end of the ring-shaped main body is in the shape of a circular truncated cone. , the annular body is sleeved on the outer surface of the main body of the pumping part, and is flush with the outer side; the inner surface of one end of the annular body forms a circumferential groove with the outer side of the main body of the pumping part, and the ring The other end of the shaped main body is fixedly connected with the main body of the pumping element; the opening direction of the annular groove is opposite to the flow direction of the well fluid. When the flow rate of the well fluid reaches a certain value, the well fluid enters the annular groove, and the pressure inside the annular groove at the edge of the annular groove is greater than the pressure outside the annular groove, so that the pumping The ring expands outward at the opening of the annular groove; the pushing area of ​​the bridge plug is increased, so that the drilling fluid can more effectively push the setting tool and the connected bridge plug.

Description

technical field [0001] The invention relates to the field of petroleum underground construction, in particular to an underground pumping ring and an underground pumping device. Background technique [0002] In oil and gas well staged fracturing operations, low pumping efficiency is often encountered when pumping bridge plugs. Due to the operating conditions, when a small outer diameter bridge plug is required, the gap between the bridge plug and the downhole casing is too large, and the drilling fluid flow area becomes larger. When the bridge plug is pumped, the force to push the bridge plug is reduced. This affects the speed of pumping the bridge plug, and ultimately increases the staged fracturing time of the oil and gas well. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a downhole pumping ring and a downhole pumping device for improving the pumping efficiency of downhole bridge plugs. [0004] The technic...

AI Technical Summary

Problems solved by technology

[0002] In oil and gas well staged fracturing operations, low pumping efficiency is often encountered when pumping bridge plugs

Due to the operating conditions, when a small outer diameter bridge plug is required, the gap between the bridge plug and the downhole casing is too large, and the drilling fluid flow area becomes larger. When the bridge plug is pumped, the force to push the bridge plug is reduced. This affects the speed at which the bridge plug is pumped, ultimately increasing the time it takes to stage a well for oil and gas wells

Images