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Gravel pre-filling device for filling sand control screen with gravels

A sand control screen and gravel packing technology, which is applied in the fields of mining fluid, wellbore/well parts, earthwork drilling and production, etc., can solve the problems of high cost of filling equipment and affecting the efficiency of filling work, and achieve the goal of improving filling work efficiency, sand and gravel filling, etc. uniform effect

Active Publication Date: 2017-08-29
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different types and specifications of the screens and the different sizes of the gravel, when filling different types of screens and gravels of different sizes, it is necessary to replace the diverters of different models and specifications, thus resulting in high purchase costs for filling equipment , but also seriously affect the filling efficiency

Method used

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  • Gravel pre-filling device for filling sand control screen with gravels
  • Gravel pre-filling device for filling sand control screen with gravels
  • Gravel pre-filling device for filling sand control screen with gravels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The gravel pre-filling device of the gravel-packed sand control screen consists of a frame 1, a vibrating motor 2, a fixing fixture 3, a filling water pipe 4, a filling hose 5 and a filling head 6, and a working panel is installed on the frame 1 through a buffer spring 7 8. The vibration motor 2 is installed on the frame 1 below the working panel 8, and the vibration motor 2 is connected to the bottom of the working panel 8; the center of the upper surface of the working panel 8 is provided with a fixed concave 9, and the fixed concave 9 is provided with a recycling hole , The edge of the fixed concave 9 is provided with a coaming plate 10; in order to prevent the fluid overflowing from the screen pipe from overflowing during work, and collect the circulating water through the recovery hole, so as to realize the repeated utilization of the circulating water.

[0028] A plurality of fixing fixtures 3 are threadedly installed on the working panel 8 on the periphery of the ...

Embodiment 2

[0034] The gravel pre-filling device of the gravel-packed sand control screen consists of a frame 1, a vibrating motor 2, a fixing fixture 3, a filling water pipe 4, a filling hose 5 and a filling head 6, and a working panel is installed on the frame 1 through a buffer spring 7 8. The vibration motor 2 is installed on the frame 1 below the working panel 8, and the vibration motor 2 is connected to the bottom of the working panel 8; the center of the upper surface of the working panel 8 is provided with a fixed concave 9, and the fixed concave 9 is provided with a recycling hole , The edge of the fixed concave 9 is provided with a coaming plate 10; in order to prevent the fluid overflowing from the screen pipe from overflowing during work, and collect the circulating water through the recovery hole, so as to realize the repeated utilization of the circulating water.

[0035] A plurality of fixing fixtures 3 are threadedly installed on the working panel 8 on the periphery of the ...

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Abstract

The invention relates to a gravel pre-filling device for filling a sand control screen with gravels, and belongs to the technical field of filling devices for filling sand control screens with gravels. The gravel pre-filling device comprises a frame, a vibrating motor, a fixing fixture, a filling water pipe, a filling tube and a filling head. The work panel is installed on the frame through a buffer spring, and the vibrating motor is installed on the part below the work panel of the frame. One side of the work panel is provided with the filling water pipe, and the end of the filling water pipe is provided with the filling head. According to the gravel pre-filling device for filling the sand control screens with the gravels, filling holes in the filling head can be selectively blocked or opened, thus sand control screens with different specifications and models can be filled with gravels, the problem of excessively high acquisition cost caused by replacing diverters of different specifications and models when the screens of different models and specifications are filled with gravels of different particle size of existing filling device is solved, the work efficiency of filling is improved, and the gravel pre-filling device is particularly applicable to the filling of the sand control screens.

Description

technical field [0001] The invention relates to a gravel pre-filling device for gravel filling sand control screens, belonging to the technical field of gravel filling sand control screen filling equipment. Background technique [0002] When gravel-packed sand control screens are used in horizontal wells, the gravel packing in the screens is generally done downhole. Since the filling direction is perpendicular to the gravity direction of the gravel, the filling law is fundamentally different from that of vertical wells, resulting in insufficient filling and gravel filling. There is a certain difference in the radial permeability of the packed screen. In order to solve this problem, at present, gravel-packed sand control screens are pre-packed on site according to actual requirements, and then the filled screens are lowered into oil and gas wells; filling gravel on the well well overcomes the problems of filling direction and gravel gravity. The problem of vertical direction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/08
CPCE21B43/082
Inventor 邓福成邓金根邓自强王杰何良
Owner YANGTZE UNIVERSITY