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Frozen-blockage-preventing oil well sampling device for oilfields

A sampling device and oil well technology, applied in wellbore/well parts, earthwork drilling and production, etc., can solve problems such as sampling difficulties, achieve convenient sampling and analysis, and simple and convenient operation

Inactive Publication Date: 2016-06-01
孟兵川
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an oil well sampling device for anti-freeze blockage used in oil fields to solve the problem of difficult sampling in oil fields and oil pipelines in cold seasons, and to facilitate sampling and analysis of oil pipelines and oil field production

Method used

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  • Frozen-blockage-preventing oil well sampling device for oilfields
  • Frozen-blockage-preventing oil well sampling device for oilfields
  • Frozen-blockage-preventing oil well sampling device for oilfields

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Oilfield of the present invention is used anti-freeze plugging oil well sampling device such as figure 1 , Figure 5 to Figure 8 As shown, it includes an oil pipeline 4 and a sampling port 10. The sampling port is connected to the lower part of the oil pipe through a thread 16. There is a fastening nut 17 on the sampling port, which is fastened with a fastening nut. The two ends of the oil pipeline are provided with clamps 5. Through The clamp is connected with the oil production pipeline. The sampling device is provided with an adjusting rod 7, a screw nut 15 and a sealing mechanism. The lead screw nut is inserted and welded at the position corresponding to the sampling port on the upper part of the oil pipeline. The sealing mechanism includes a sealing gland 2 and a sealing sleeve 3, the sealing sleeve is welded around the screw nut, the sealing sleeve is equipped with a sealing packing 8, the sealing packing is graphite packing, and the sealing gland and the sealin...

Embodiment 2

[0023] Another embodiment of the present invention is as figure 2 As shown, the two ends of the oil pipeline 4 are provided with flanges 11, the two ends of the oil pipeline are connected to the oil production pipeline through the flanges, and the sealing packing 8 in the sealing sleeve 3 is nylon packing. Others are the same as in Example 1.

Embodiment 3

[0025] Another embodiment of the present invention is as image 3 As shown, the oil pipeline 4 is provided with a butterfly valve 19 and a pressure gauge 20, the butterfly valve is installed on both sides of the sampling port 10, the pressure gauge is located downstream of the sampling port, and is installed between the sampling port and the butterfly valve. The upper end of regulating rod 7 is provided with anti-theft nut 21, and anti-theft nut is a pentagonal or heptagonal structure for female, must special-purpose anti-theft wrench just can switch. Add a short tube 22 on the top of the sealing gland 2, the top of the short tube is provided with a cover with a central hole 23, the short tube covers the upper part of the adjusting rod with the anti-theft nut, the anti-theft wrench enters from the hole on the top, and the sampling device is checked. switch. The two ends of the oil pipeline 4 are provided with threaded fasteners 12, and the two ends of the oil pipeline are con...

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Abstract

The invention relates to a frozen-blockage-preventing oil well sampling device for oilfields. The frozen-blockage-preventing oil well sampling device for oilfields comprises an oil tubing and a sampling port, wherein the sampling port is connected on the lower portion of the oil tubing in a threaded manner. The frozen-blockage-preventing oil well sampling device for oilfields is provided with an adjusting rod, a screw nut and a sealing mechanism, wherein the screw nut is inserted into and welded at a position, corresponding to the sampling port, of the upper portion of the oil tubing; the sealing mechanism comprises a sealing gland and a sealing sleeve welded around the screw nut; the adjusting rod comprises a sealing head, a screw and a handle, the handle is mounted on the upper portion of the adjusting rod, the screw is positioned in the middle of the adjusting rod, and the lower portion of the adjusting rod is connected with the sealing head through a connecting piece. The adjusting rod is inserted into the sealing mechanism and the screw nut, the screw is in screw thread fit with the screw nut, and the sealing head corresponds to the sampling port. The frozen-blockage-preventing oil well sampling device for oilfields has the advantages that producing fluid passes through the periphery of the sampling port continuously, oil samples can be taken out rapidly anytime, the problem about difficulty in sampling in cold seasons is solved, and simplicity and convenience in operation are achieved, so that oil transportation, sampling analysis and oil production are facilitated.

Description

technical field [0001] The invention belongs to the technical field of oilfield equipment, and relates to auxiliary equipment for oil production, in particular to a sampling device for oil wells used in oilfields to prevent freezing and plugging. Background technique [0002] The oil well sampling equipment of oil production enterprises is connected to the outside of the oil well production pipeline through short pipes. The oil well sampling cock is a production accessory. Since it is installed outside the production pipeline by connecting the short pipe, the production fluid in the short pipe does not flow during the non-sampling period. In winter and late autumn and early spring, due to the low ambient temperature , the production fluid in the short pipe will condense due to the decrease of temperature. The viscosity of the condensed production fluid increases, and the fluidity becomes poor. It is often necessary to close the production gate to suppress the pressure befor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/08
CPCE21B49/08
Inventor 童真伟刘春亮赵能耿海强李建勋郭大凯明华孟兵川
Owner 孟兵川
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