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A kind of downhole pumping method

A pumping and pumping ring technology, applied in the field of oil well construction, can solve the problems of low pumping efficiency, affecting the speed of pumping bridge plugs, and increasing the drilling fluid flow area

Active Publication Date: 2021-08-17
CHENGDU INNOX TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A kind of downhole pumping method
  • A kind of downhole pumping method
  • A kind of downhole pumping method

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Embodiment Construction

[0046] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0047] The block diagram of the downhole pumping method of the present invention can be found in figure 1 ,

[0048] Wherein, a kind of downhole pumping method of embodiment one comprises the following steps:

[0049] Step 1, connect the pumping tool 04 with the bridge plug 06, set the pumping ring 03 on the outer side of the pumping tool 04 or the bridge plug 06, make the outer side of the pumping ring 03 and the pumping tool 04 or the bridge plug 06 The outer surface of the pumping ring 03 and the outer surface of the pumping tool 04 or the bridge plug 06 are formed with a circumferential groove 07 in the circumferential direction. The circumferential groove 07 has a circular platform structure. The end is an op...

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Abstract

The invention discloses a downhole pumping method. A pumping ring is arranged on the outer surface of a pumping tool or a bridge plug. During the pumping process, the flow rate of the well fluid reaches a first preset value V 1 , the well fluid enters the annular groove, and at the edge of the annular groove, the pressure inside the annular groove is greater than the pressure outside the annular groove, so that the pumping ring The opening is expanded outward; at this time, due to the outward expansion of the pumping ring, the outer diameter of the setting tool is temporarily increased, that is, the pushing area of ​​the bridge plug is increased, so that the drilling fluid can push the setting more effectively Tools and connected bridge plugs. Speeds up the pumping process and saves time.

Description

technical field [0001] The invention relates to the field of oil well construction, in particular to a downhole pumping method. 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 method for improving the pumping efficiency of downhole bridge plugs. [0004] The technical solution of the present invention to solve the above technical problems is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B23/08E21B43/26
CPCE21B23/08E21B43/26
Inventor 袁猷
Owner CHENGDU INNOX TECH CO LTD
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