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Test method for dynamic monitoring of water curtain replenishment effect in large-scale underground water-sealed rock caverns

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

Active Publication Date: 2020-11-13
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 water will cause pollution and waste, so mining is often used. Reinjection of effluent, but whether the quality of reinjection water meets the requirements of reinjection needs to be studied, and experimental devices and test methods in this area are urgently needed

Method used

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  • Test method for dynamic monitoring of water curtain replenishment effect in large-scale underground water-sealed rock caverns
  • Test method for dynamic monitoring of water curtain replenishment effect in large-scale underground water-sealed rock caverns
  • Test method for dynamic monitoring of water curtain replenishment effect in large-scale underground water-sealed rock caverns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as Figure 1-3 As shown, a test device for dynamically monitoring the water curtain water replenishment effect of a large-scale underground water-sealed rock cavern includes a model box 1 with a built-in artificial rock 18, and a main cavern 19 is arranged in the artificial rock 18, and the main cavern 19 is respectively connected with The oil outlet pipe 3 and the oil inlet pipe 4, the artificial rock 18 on the upper part of the main cavern 19 is provided with a water curtain roadway 6, and the artificial rock 18 below the main cavern 19 is provided with a fluid permeator 14, and the outlet end of the fluid permeator 14 is located in the model box 1 A flow rate 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 . The present invention adopts the matching arrangement of the model box 1 a...

Embodiment 2

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

[0035] 1) Heating and piercing, heating the round steel to 1340°C~1350°C for piercing treatment (controlling the eccentricity of the piercing), to obtain a tube blank, constant temperature for 10-14min, the surface of the tube blank is perforated with micro-holes, the hole diameter is 0.1-0.5mm (choose according to actual needs hole diameter), connect the tube blank according to the structural shape of the fluid permeator 14.

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

[0037] 3) Lubrication treatment: pickling, phosphating and saponification of the annealed fluid permeator 14;

[0038] 4) Deburring and storing in storage...

Embodiment 3

[0041] A test method for dynamically monitoring the water curtain replenishment effect of a large-scale underground water-sealed rock cavern, comprising the following steps:

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

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

[0044] 3) Using the fluid permeator 14 and the flow rate metering device 13 to measure the seepage velocity / seepage volume;

[0045] 4) Use the water quality detector 11 to detect the record data of the seepage water quality, and reinject the seepage water body into the water curtain roadway by the circulation pipe 9 and the pump 8;

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

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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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Patent Type & Authority Patents(China)
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