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Anti-blocking high-percolation sand pipe

An anti-clogging and sand-filtering tube technology, applied in drilling pipes, casings, wellbore/well components, etc., can solve the problems of easy clogging of mechanical sand control tools, and achieve the goal of improving the success rate of operations, reducing the damage rate and saving costs. Effect

Pending Publication Date: 2022-02-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide an anti-clogging high-permeability sand filter tube for the above-mentioned defects in the prior art, which effectively and fundamentally solves the problem that mechanical sand control tools are easy to block and prolongs the service life of the sand filter tube

Method used

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  • Anti-blocking high-percolation sand pipe
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  • Anti-blocking high-percolation sand pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see Figure 1 to Figure 5 , the present invention provides a technical solution:

[0039] An anti-clogging high-permeability sand filter pipe includes a centralizer 101, a center pipe 110, a resin sand filter 104, a stainless steel metal mesh biological filter 103, an anti-vibration fixing ring, an inner positioning rubber ring, and an outer positioning rubber ring. The shockproof fixing ring is divided into an upper shockproof fixing ring 102 and a lower shockproof fixing ring 109, the inner positioning rubber ring is divided into an upper inner positioning rubber ring 105 and a lower inner positioning rubber ring 107, and the outer positioning rubber ring is divided into an upper Outer positioning rubber ring 106, lower outer positioning rubber ring 108. The centralizer is located at one end of the center pipe and is connected with the center pipe through a screw thread. The resin sand filter is set on the center pipe and forms an annular space with the center pipe. ...

Embodiment 2

[0050] see Figure 1 to Figure 5 , the present invention provides a technical solution:

[0051] An anti-clogging high-permeability sand filter pipe includes a centralizer, a center pipe, a resin sand filter, a stainless steel metal mesh biological filter, an anti-vibration fixing ring, an inner positioning rubber ring, and an outer positioning rubber ring. The shockproof fixing ring is divided into an upper shockproof fixing ring and a lower shockproof fixing ring, the inner positioning rubber ring is divided into an upper inner positioning rubber ring and a lower inner positioning rubber ring, and the outer positioning rubber ring is divided into an upper outer positioning rubber ring , Lower outer positioning rubber ring. The centralizer is located at one end of the center pipe and is connected with the center pipe through a screw thread. The resin sand filter is set on the center pipe and forms an annular space with the center pipe. The stainless steel metal mesh biologic...

Embodiment 3

[0062] see Figure 1 to Figure 5 , the present invention provides a technical solution:

[0063]An anti-clogging high-permeability sand filter pipe includes a centralizer, a center pipe, a resin sand filter, a stainless steel metal mesh biological filter, an anti-vibration fixing ring, an inner positioning rubber ring, and an outer positioning rubber ring. The shockproof fixing ring is divided into an upper shockproof fixing ring and a lower shockproof fixing ring, the inner positioning rubber ring is divided into an upper inner positioning rubber ring and a lower inner positioning rubber ring, and the outer positioning rubber ring is divided into an upper outer positioning rubber ring , Lower outer positioning rubber ring. The centralizer is located at one end of the center pipe and is connected with the center pipe through a screw thread. The resin sand filter is set on the center pipe and forms an annular space with the center pipe. The stainless steel metal mesh biologica...

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Abstract

The invention discloses an anti-blocking high-percolation sand pipe. The sand pipe comprises a central pipe and a resin sand filter arranged outside the central pipe in a sleeving mode, wherein a radial through overflowing hole is formed in a pipe body of the central pipe, the inner diameter of the resin sand filter is larger than the outer diameter of the central pipe, and the anti-blocking high-percolation sand pipe further comprises a stainless steel metal net biofilter, the stainless steel metal net biofilter is sleeved outside the resin sand filter, and the inner diameter of the stainless steel metal net biofilter is larger than the outer diameter of the resin sand filter. According to the sand pipe, a problem that a mechanical sand prevention tool is easy to block is effectively and fundamentally solved, and the service life of the sand filter pipe is prolonged; the damage rate of a sand filtering pipe in the downhole operation process is reduced, the operation success rate is increased, the cost is saved, and effects of increasing the yield and stabilizing the yield for a long time are achieved.

Description

technical field [0001] The invention relates to the technical field of downhole sand control in petroleum exploitation, in particular to an anti-clogging high-permeability sand filter pipe. Background technique [0002] Unconsolidated sandstone reservoirs in my country have a wide distribution range, large reserves and high production, and have always occupied an important position in oil exploitation. However, with the deepening of mining, in order to improve oil well recovery, water injection, gas injection and other processes have been gradually expanded and implemented. Intensified recovery has led to increased cementation and looseness of reservoirs, serious heterogeneity, and ultimately serious sand production in oil wells. [0003] Sand production in oil wells will not only reduce production in oil fields, but also cause casing deformation and even scrap oil wells in severe cases. Therefore, taking necessary measures for sand control is a necessary means to ensure nor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/08E21B17/10C04B28/14
CPCE21B43/086E21B43/082E21B17/1078C04B28/14C04B18/08C04B22/064
Inventor 石晓东尚朝辉彭志敏何海峰张友振刘英马建波刘春博顾永涛纪超
Owner CHINA PETROLEUM & CHEM CORP