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Oil well washing conducting device

A technology of conduction device and oil well, which is applied in the direction of drilling equipment, flushing wellbore, wellbore/well components, etc., which can solve the problems of high failure rate of reverse circulation well washing operation, and achieve the effect of improving the success rate

Pending Publication Date: 2019-08-16
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an oil well cleaning conduction device to solve the problem of high failure rate of reverse circulation well cleaning operation in the related art

Method used

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  • Oil well washing conducting device
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  • Oil well washing conducting device

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] Such as figure 1 shown, and Figure 9 , Figure 10 As shown, the embodiment of the present invention provides an oil well cleaning lead-through device, comprising: a central pipe 10 for transporting a solution; Lead the solution in the pipeline to be connected into the central tube 1...

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Abstract

The invention discloses an oil well washing conducting device. The oil well washing conducting device comprises a central pipe and a conducting part, wherein the central pipe is used for conveying a solution, the conducting part is connected with the central pipe and a to-be-connected pipeline and used for conducting the solution in the to-be-connected pipeline into the central pipe or conductingthe solution in the central pipe into the to-be-connected pipeline. Through the oil well washing conducting device, the problem of high failure rate of reverse circulation well washing operation in the related technology is solved.

Description

technical field [0001] The invention relates to the field of oil collection, in particular to an oil well cleaning and conducting device. Background technique [0002] The working principle of reverse circulation well flushing is as follows: well flushing fluid is injected from the oil casing annulus, flows into the tubing string through the screen, and finally returns through the tubing string to form a circulation flushing channel, thereby realizing the cleaning of the oil well. [0003] In the current oil and gas production process, a check valve is installed in the casing gas discharge process connected to the oil well Christmas tree. When the pressure in the oil casing annulus is greater than the pressure of the external delivery process, the valve plate of the check valve opens to discharge the casing gas. During the reverse circulation well flushing process, the well flushing fluid is injected from the oil casing annulus, and the pressure of the oil casing annulus inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B21/12E21B17/042E21B17/02
CPCE21B21/12E21B17/0426E21B17/04
Inventor 王意汪沪亮郭鹏举王丽杨文学张睿李斌郭江涛刘玮阿里军
Owner PETROCHINA CO LTD