Method for evaluating erosion rate of sand control pipe and its special-purpose apparatus

A special device, sand control pipe technology, applied in the direction of removing a certain component, weighing, material analysis using radiation diffraction, etc., can solve the problem of screen erosion rate based on experience, etc.

Inactive Publication Date: 2015-09-09
CHINA UNIV OF PETROLEUM (BEIJING) +1
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  • Abstract
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  • Application Information

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Problems solved by technology

At present, the evaluation methods of screen erosion rate are mostly based on experience, which has great limitations.

Method used

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  • Method for evaluating erosion rate of sand control pipe and its special-purpose apparatus
  • Method for evaluating erosion rate of sand control pipe and its special-purpose apparatus
  • Method for evaluating erosion rate of sand control pipe and its special-purpose apparatus

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Embodiment Construction

[0014] like figure 1 and figure 2 Shown is the device for indoor evaluation of sand control pipe erosion rate of the present invention, which includes a closed autoclave body 8, an erosion stand 14, a nozzle 22, a rotary nozzle 15, an erosion test piece 21, a cleaning flow control valve 26, Sand mixing flow control valve 27; wherein, the autoclave body 8 is cylindrical, and the erosion platform 14 is cylindrical, placed in the autoclave body 8, nested in the steps of the base 17, and the autoclave body 8 concentrically, use pads 12 and rubber gaskets 16 to seal the erosion bench 14 in the autoclave body, screen pieces are embedded on the wall of the erosion bench 14, and use the erosion test piece bead 20 to fix and seal.

[0015] The side wall of the autoclave body 8 is provided with five oil inlets, four oil inlets 13 for sand washing, and one oil inlet 23 for cleaning. The oil inlets are located in the middle of the side wall of the autoclave body. The oil inlet 13 is ev...

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Abstract

The invention relates to a method for evaluating erosion rate of a sand control pipe and its special-purpose apparatus, which is characterized in that the on-site screen casings are used for processing to screen casing sheets for experiments. According to the invention, change of sand control pipe precision can be evaluated by a laser granularity analysis on sand from different periods of experiment process, erosion rate of the screen casing under specific reservoir condition and production condition can be evaluated according to the mass change of the screen casing sheet before and after the experiment, and finally the erosion rate and the usage life of the screen casing can be predicted. For solving the problems, a technical scheme is characterized in that the special-purpose apparatus is a whole set of fluid circulation apparatus, which comprises a circulation solution storage pot 1, a high pressure pump 2, a pressure gage 3, a flow monitor device 4, a safety exhaust valve 6, a pressure transducer 7, an enclosed autoclave body 8, an oil-sand separator 9, and a data acquisition system 10. According to the special-purpose apparatus, an erosion stand 14, a cleaning nozzle 22 and a sand washing nozzle 15 are arranged in the enclosed autoclave body 8.

Description

technical field [0001] The invention discloses an indoor method for evaluating the erosion rate of a sand control pipe and a special device thereof. Background technique [0002] In weakly consolidated sandstone reservoirs, once the sand production in the oil layer is serious, the hazard is not only the formation of sand plugging and affecting the production of the oil well, but also the wear of the oil pump and sucker rod, which increases the workload of sand cleaning operations; the sand production in the oil layer is serious When the oil well is blocked, the oil well will stop production. Mechanical screen sand control is one of the main sand control tools it chooses. Due to the different geological properties of the formation itself and the different mining methods, in the production process of oil and gas fields, the selection of on-site sand control methods is different. After data research, the most common mechanical sand control methods are: slotted liner, wire-wrap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N23/20
Inventor 闫伟邓金根王厚东刘书杰曹砚峰邓福成张磊孙金朱培珂高佳佳刘凯铭汪伟蔚宝华谭强刘伟闫新江陈建国
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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