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Anti-silt strainer pipe for sandstone geothermal well

A technology of geothermal wells and water filter pipes, which is applied in wellbore/well components, production fluids, earthwork drilling and production, etc., and can solve problems such as poor silt protection effect

Pending Publication Date: 2020-06-12
中石化绿源地热能(陕西)开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a silt sand prevention filter pipe for sandstone geothermal wells, which can effectively protect silt sand and solve the problem of poor silt sand protection effect in the prior art

Method used

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  • Anti-silt strainer pipe for sandstone geothermal well

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0029] figure 1 It is a structural schematic diagram of Embodiment 1 of a silt prevention water filter pipe for a sandstone geothermal well of the present invention. Such as figure 1 Shown, a kind of sandstone geothermal well anti-silt filter water filter pipe of the present invention comprises:

[0030] Inner punching sleeve 4, floating bead f...

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Abstract

The invention provides an anti-silt strainer pipe for a sandstone geothermal well. The anti-silt strainer pipe for the sandstone geothermal well comprises an inner flushing seam sleeve, a floating bead filter screen and an outer flushing seam sleeve, wherein the inner flushing seam sleeve, the floating beam filter screen and the outer flushing seam sleeve are sequentially arranged from inside to outside; and the floating bead filter screen is composed of floating beads which are hollow particles, and cavities of the hollow particles are semi-vacuum. By the adoption of the anti-silt strainer pipe for the sandstone geothermal well, effective protection against silt is realized, and the problem of poor silt prevention effect in the prior art is solved.

Description

technical field [0001] The invention relates to geothermal well technology, in particular to a sandstone geothermal well anti-silt water filter pipe. Background technique [0002] With the deepening of the development and utilization of geothermal resources, sand bridges and sand plugging appear in different degrees in sandstone geothermal wells, which seriously affect the heating quality and economic benefits in the heating season. Therefore, sand control technology has been studied. [0003] Sand production from geothermal wells is one of the most important problems faced by porous sandstone thermal storage. The hazards of sand production are mainly manifested in the following three aspects: production reduction or shutdown of geothermal wells; increased abrasion of ground pipeline stations and downhole equipment; casing damage, geothermal Well scrapped. [0004] Whether the formation produces sand depends on the degree of cementation of the particles - the formation stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/08
CPCE21B43/086E21B43/082
Inventor 王鹏涛刘斌张献喻任小庆赵宇璇
Owner 中石化绿源地热能(陕西)开发有限公司