Test method for dynamically monitoring water replenishing effects of water curtains of large underground water seal rock cave depots

A dynamic monitoring, groundwater technology, used in testing water, measuring devices, analysis of suspensions and porous materials, etc., can solve problems such as waste, pollution, etc.

Active Publication Date: 2019-02-22
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The underground water-sealed cavern requires a large amount of seepage water from the formation and artificial water replenishment to maintain the tightness of the cavern to crude oil, and a large amount of water will be produced tomorrow, and the discharge of this

Method used

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  • Test method for dynamically monitoring water replenishing effects of water curtains of large underground water seal rock cave depots
  • Test method for dynamically monitoring water replenishing effects of water curtains of large underground water seal rock cave depots
  • Test method for dynamically monitoring water replenishing effects of water curtains of large underground water seal rock cave depots

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1:

[0026] Such as Figure 1-3 As shown, a test device for dynamically monitoring the water replenishment effect of a large underground water-sealed stone cave reservoir includes a model box 1 with a built-in artificial rock 18 in the model box 1. The artificial rock 18 is provided with a main cavern 19, and the main caverns 19 are respectively connected with The oil outlet pipe 3 and the oil inlet pipe 4, the artificial rock 18 above the main cavern 19 is equipped with a water curtain tunnel 6, and the artificial rock 18 below the main cavern 19 is equipped with a fluid permeator 14, and the water outlet of the fluid permeator 14 is located in the model box 1. A flow metering device 13 is provided below and correspondingly, a compartment 17 is provided between the artificial rock 18 and the model box 1, and a plastic film 16 for covering the artificial rock 18 is provided in the compartment 17. In the present invention, the model box 1 and the artificial rock 18...

Example Embodiment

[0033] Example 2:

[0034] The fluid permeator 14 of the present invention is prepared by the following process:

[0035] 1) Heat the perforation, heat the round steel to 1340℃~1350℃ and perforate (control the perforation eccentricity), get the tube blank, keep the temperature for 10-14min, perforate the surface of the tube blank, the diameter of 0.1-0.5mm (select according to actual needs Aperture), and connect the blank tube according to the structural shape of the fluid permeator 14.

[0036] 2) Annealing, heat the formed fluid permeator 14 to 685°~710° for a long time at sub-temperature, keep it for 3h-4h, cool to 600°~605°, increase the temperature by 10°~15° and keep constant temperature for 10min, repeat 2~3 times Then cool down to 560°~570°, keep it at a constant temperature for 3 hours and then slowly cool down;

[0037] 3) Lubrication treatment: the annealed fluid permeator 14 is subjected to pickling, phosphating and saponification treatments;

[0038] 4) Deburring and stor...

Example Embodiment

[0040] Example 3:

[0041] A test method for dynamically monitoring the water replenishment effect of a large underground water-sealed stone cave reservoir, including the following steps:

[0042] 1) Use water curtain tunnel 6 to provide constant pressure or constant flow liquid;

[0043] 2) Use the oil inlet pipe 4 to input oil into the main cavern 19;

[0044] 3) Use the fluid permeator 14 and the flow rate measuring device 13 to measure the seepage velocity / flux;

[0045] 4) Use the water quality detector 11 to detect the seepage water quality record data, and re-inject the seepage water into the water curtain tunnel by the circulation pipe 9 and the pump 8;

[0046] 5) Repeat the above steps 1-4, and determine the quality of the reinjection water according to the detection data of the water quality detector 11 and the seepage velocity / flow rate. The present invention uses the water quality detector 11 to detect the water body of each reinjection and the computer 12 to record the dat...

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Abstract

The invention discloses a test method for dynamically monitoring water replenishing effects of water curtains of large underground water seal rock cave depots. The test method includes steps of 1), providing constant-pressure or constant-flow liquid by roadways of the water curtains; 2), inputting petroleum into main caverns by oil inlet tubes; 3), metering seepage velocities/seepage flow by fluiddiffusers and flow rate metering devices; 4), detecting seepage water quality record data by water quality detectors and injecting seepage water bodies into the roadways of the water curtains again by circulating pipes and liquid pumps; 5), repeatedly carrying out the steps 1-4, and determining the water quality of reinjection water according to detection data of the water quality detectors and the seepage velocities/the seepage flow. The invention further provides a test device for the water replenishing effects of the water curtains. The test method and the test device have the advantages that influence rules on the permeability of cave depot rock after produced water with different types of water quality is reinjected can be obtained by the aid of the test method and the test device, the optimal reinjection water quality parameters can be quickly determined by the aid of the test method and the test device, and the test method and the test device are low in influence factor and high in accuracy.

Description

technical field [0001] The invention belongs to the technical field of oil and gas storage and transportation, and in particular relates to a test method and device for dynamically monitoring the water curtain replenishment effect of large-scale underground water-sealed rock caverns. Background technique [0002] With the rapid development of China's economy, the demand for oil is increasing day by day. For China, strategic oil reserves play a very important role in ensuring national security and sustainable development of the national economy. Underground water-sealed caverns have the advantages of safety, economy, high efficiency, and large storage capacity. Therefore, they have been greatly developed in recent decades and are widely used in national strategic petroleum reserves. The underground water-sealed cavern requires a large amount of seepage water from the formation and artificial water replenishment to maintain the tightness of the cavern to crude oil, and a larg...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N33/18
CPCG01N15/0826G01N33/18
Inventor 赵东锋殷丹丹朱根民竺柏康高建丰
Owner ZHEJIANG OCEAN UNIV
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