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Energy-saving testing device for high-temperature high-pressure performance of down-hole packer

A high temperature and high pressure, test device technology, which is applied in the direction of using liquid/vacuum for liquid tightness measurement and measuring the acceleration and deceleration rate of fluid, etc., can solve problems such as large throttling loss, and achieve small pressure fluctuation and accurate pressure control. , good energy saving effect

Inactive Publication Date: 2014-05-14
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an energy-saving downhole packer high temperature and high pressure performance test device in view of the defect of complicated throttling loss of experimental equipment in the existing technology

Method used

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  • Energy-saving testing device for high-temperature high-pressure performance of down-hole packer
  • Energy-saving testing device for high-temperature high-pressure performance of down-hole packer
  • Energy-saving testing device for high-temperature high-pressure performance of down-hole packer

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Experimental program
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Effect test

Embodiment 1

[0022] see figure 1 , the high temperature and high pressure performance test device of the energy-saving downhole packer mainly includes a voltage stabilizing circuit I, a pressurizing circuit II, and a high temperature and high pressure test oil well reversing circuit III; Oil well reversing circuit III is connected sequentially by tubing. The pressure sensor 14 and the pilot-operated high-pressure electro-hydraulic proportional relief valve 15 are respectively connected in parallel on the oil pipe between the pressurization circuit II and the reversing circuit III of the high-temperature and high-pressure test oil well; the flow sensor 16 is connected in series to the pressurization circuit II On the tubing between the high temperature and high pressure test oil well reversing circuit III.

Embodiment 2

[0023] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the special features are:

[0024] see figure 1 The pressure stabilizing circuit I in the energy-saving downhole packer high temperature and high pressure performance test device consists of a pressure relay 3, an accumulator 4 and a direct-acting overflow valve 5 respectively connected in parallel to the oil outlet pipe of the quantitative gear pump 1. It is constructed on the road, and the quantitative gear pump 1 is driven by the motor 2 as the oil source of the system. When the pressure of the oil source is lower than the minimum pressure set by the pressure switch 3, the pressure switch 3 will act to rotate the motor 2 and drive the quantitative gear pump 1 to supply oil to the accumulator 4. When the pressure of the oil source reaches the maximum set by the pressure switch 3 When the pressure is high, the pressure switch 3 acts again to stop the motor from rotating and stop supplying oil to ...

Embodiment 3

[0025] Embodiment 3: This embodiment is basically the same as Embodiment 1, and the special features are:

[0026] see figure 1, the structure of the pressurization circuit II in the energy-saving downhole packer high temperature and high pressure performance test device is a high pressure bidirectional variable pump 11, a high pressure quantitative pump 12 and a low pressure bidirectional variable pump 13 connected coaxially, wherein the high pressure quantitative The pump 12 is located in the middle of the coaxial shaft, and the other two variable variable pumps 11 and 13 are located at both ends of the shaft. One end of the high-pressure bidirectional variable variable pump 11 and the high-pressure quantitative pump 12 is connected to the oil outlet of the pressure stabilizing circuit I, and the other end is connected to the high temperature and high pressure test pump. The oil well reversing circuit III is connected, one end of the low-pressure bidirectional variable pump ...

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Abstract

The invention relates to an energy-saving testing device for high-temperature high-pressure performance of a down-hole packer. The testing device is mainly formed by sequentially connecting a pressure stabilization loop, a pressurization loop and a high-temperature high-pressure test oil well reversing loop, wherein a pilot type high-pressure liquid proportion overflow valve, a pressure sensor and a flow sensor are connected onto a hydraulic pipeline between the pressurization loop and the high-temperature high-pressure test oil well reversing loop. Under the condition that an oil supply quantitative gear pump of a power accumulator supplies oil discontinuously, the energy-saving testing device can work for a long time under the working conditions of high temperature and high pressure and simultaneously avoids energy loss caused by throttling. The energy-saving testing device can simulate high-temperature high-pressure working conditions under the shaft, test the high-temperature high-pressure performance of the down-hole packer, and especially measure leaking flow of the down-hole packer under the high-temperature high-pressure condition.

Description

technical field [0001] The invention relates to an energy-saving downhole packer high temperature and high pressure performance test device, which belongs to the field of petroleum engineering and electromechanical integration. Background technique [0002] Now, with the increase of drilling depth, due to the effect of geothermal gradient and liquid column pressure, the downhole temperature and pressure also increase accordingly. Therefore, the downhole packer failure during the working process may cause various downhole complex situations and accidents, and cause huge economic loss. In order to verify the high-temperature and high-pressure performance of the packer, a high-temperature and high-pressure test equipment that can simulate downhole high-temperature and high-pressure conditions is needed. [0003] In Issue 06, 2004 of "Petroleum Field Machinery", the document "Development of Packer High Temperature Performance Test System" discloses a packer high temperature per...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/26
Inventor 刘树林张宏利缴文会刘吉成周晓君翟宇毅唐友福刘颖慧姜锐红
Owner SHANGHAI UNIV
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