Fluid sand carrying experimental device

An experimental device and fluid technology, applied in the direction of wellbore/well components, earthwork drilling, flushing wellbore, etc., can solve the problems of oil layer pollution, oil well production reduction, complex fluid flow rate, etc., and achieve good sand carrying effect and optimization The effect of the swabbing parameter

Inactive Publication Date: 2012-12-12
NANTONG XINCHENG ELECTRONICS
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Problems solved by technology

Coarse sand particles cannot be effectively brought to the ground
In severe cases, all the injected water will enter the oil layer and cannot go back up, resulting in failure of sand washing, resulting in reduced production of oil wells with contaminated oil layers
Due to the randomness of the settlement traje

Method used

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  • Fluid sand carrying experimental device

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Experimental program
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Embodiment Construction

[0009] combined with figure 1 , to further describe the present invention:

[0010] The present invention is mainly composed of a water tank 1, a centrifugal pump 2, a test tube 4, a sand adding pipeline 5, a sand adding funnel 6, and a pipeline 7. The water tank 1 is connected to the centrifugal pump 2 and the test tube 4 through the pipeline 7, and the test tube 4 is connected to the sand adding tube. Pipeline 5, sand-filling pipeline 5 is connected to sand-filling funnel 6, and the joint between test tube 4 and sand-filling pipeline 5 is connected to water tank 1 through pipeline 7; flowmeter 3 is arranged between centrifugal pump 2 and test tube 4.

[0011] During the experiment, the foam fluid was poured into the water tank. Due to its low density, small filtration loss, good sand-carrying performance and strong drainage ability, the foam fluid can be widely used in drilling, completion, and Workover and oil and gas well stimulation measures.

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Abstract

The invention relates to oil well shaft test devices, in particular to a fluid sand carrying experimental device. The technical scheme is that the fluid sand carrying experimental device is mainly composed of a water tank, a centrifugal pump, a test tube, a sand feeding pipeline, a sand feeding hopper and a pipeline. The water tank is connected with the centrifugal pump and the test tube through the pipeline, the test tube is connected with the sand feeding pipeline, the sand feeding pipeline is connected with the sand feeding hopper, and the connection position of the test tube and the sand feeding pipeline is connected with the water tank through the pipeline. The fluid sand carrying experimental device has the advantages that a statistic relation of sand grain settling speed and well liquid average speed is built on the basis of a well shaft flow simulation experiment, and the optimum sand carrying effect can be achieved.

Description

technical field [0001] The invention relates to an oil well shaft test device, in particular to a fluid sand-carrying test device. Background technique [0002] In oilfield production, due to the long-term exploitation, the pressure of the oil layer is greatly reduced, and the pressure coefficient is reduced to be lower than the equivalent pressure coefficient of water. In this case, the well is washed with clean water to wash the sand, and the water enters the low-pressure layer to reduce the flow rate and velocity of the liquid going up and down the wellbore. Coarse sand particles cannot be effectively brought to the ground. In severe cases, all the injected water will enter the oil layer and cannot go back up, resulting in the failure of sand washing and the production of oil wells that are polluted in the oil layer and reduced. Due to the randomness of the sedimentation trajectory of irregularly shaped sand particles in the fluid, and the fact that the flow rate of the...

Claims

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Application Information

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IPC IPC(8): E21B21/00E21B21/14
Inventor 戴皓月
Owner NANTONG XINCHENG ELECTRONICS
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