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Clean hole screw rod pump against sand block

A screw pump and well-washing technology, which is applied in the field of well-washable screw pumps for sand prevention, can solve the problems of economic loss, low benefit of oil production wells, and short production time, and achieve the goals of increasing working time, significant economic benefits, and reducing operating costs Effect

Inactive Publication Date: 2007-09-05
于海涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the production well of the sand production screw pump is stopped for some reason, the sand sinks, burying the screw and the sucker rod, causing the screw to be stuck, and the well cannot be opened again. It is necessary to lift up all the oil production devices and re-install the new screw pump. Resume production, causing great economic losses
The screw pumps used in the field are all solid, and the hollow screw pumps are difficult to process. Therefore, the oil wells cannot be cleaned after the screw pumps are installed, so that the normal production time of some screw pump oil production wells is short, requiring frequent operation and maintenance, and the oil production wells are low. , high maintenance cost

Method used

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  • Clean hole screw rod pump against sand block
  • Clean hole screw rod pump against sand block

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Experimental program
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Embodiment Construction

[0008] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0009] Among the figure: 1 is a grit chamber, 2 is a screw pump, 3 is a pressure test valve, 4 is a grit joint, and 5 is a well flushing valve, that is, the present invention consists of a grit chamber 1, a screw pump 2, a pressure test valve 3, It consists of a sand setting joint 4 and a well flushing valve 5. The screw pump 2 is in the grit chamber 1, the lower part of the screw pump 2 is connected with the pressure test valve 3, the lower part of the pressure test valve 3 is connected with the small thread on the upper part of the grit chamber 4, and the lower part of the grit chamber 1 is connected with the upper part of the grit joint 4 with a large thread , The lower part of the sand setting joint 4 is connected with the well flushing valve 5 . The lower part of the well flushing valve 5 is connected with the sanding tailpipe. During oil production, the ...

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Abstract

A screw-rod pump without sand jam and able to be used for washing well is composed of sand depositing barrel, screw-rod pump, pressure test valve, sand deposition jointer, and well washing valve. When petroleum is recovering, the petroleum comes in it through the side of sand deposition jointer and then pumped out by screw-rod pump. When it is stopped, the sand can be deposited in the tail pipe under pump. When the well is washed, the water flows through sand depositing barrel, well washing valve, annular space between sand depositing barrel and screw-rod pump, and oil pipe to return back to ground.

Description

1. Technical field [0001] The present invention relates to a kind of anti-sand stuck and washable screw pump for mechanical oil recovery in oil field. 2. Background technology [0002] After the production well of the sand production screw pump is stopped for some reason, the sand sinks, burying the screw and the sucker rod, causing the screw to be stuck, and the well cannot be opened again. It is necessary to lift up all the oil production devices and re-install the new screw pump. Resumption of production caused great economic losses. The screw pumps used in the field are all solid, and the hollow screw pumps are difficult to process. Therefore, the oil wells cannot be cleaned after the screw pumps are installed, so that the normal production time of some screw pump oil production wells is short, requiring frequent operation and maintenance, and the oil production wells are low. , high maintenance costs. 3. Contents of the invention [0003] The purpose of the present ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D3/02E21B43/00
Inventor 于海涛邓云
Owner 于海涛
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