A method of an interior experimental device and using this device for section

An experimental device and an integrated technology, applied in the field of profile control devices, can solve the problem of inability to realize precise profile control of hypertonic strips, inability to give accurate guidance and assistance on site, and inability to judge basic parameters such as the position and size of hypertonic strips, etc. question

Inactive Publication Date: 2016-10-05
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology

[0004] In terms of laboratory experiments, due to the limitation of models and methods, the existing technical means of laboratory experiments are still unable to judge the basic parameters such as the position and size of the hyperpermeable strips formed in the process of polymer flooding. Precise profile control of high-permeability strips can only use general profile control technology, which makes the indoor experiment poorly simulated to the actual mine field, and the experimental results obtained are also quite different, so it is impossible to give accurate guidance and help on site

Method used

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  • A method of an interior experimental device and using this device for section
  • A method of an interior experimental device and using this device for section
  • A method of an interior experimental device and using this device for section

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Embodiment 1

[0034] 1. Manufacture of pressure measurement, injection and production integrated instrument

[0035] The integrated instrument for pressure measurement, injection and production is an instrument that can realize pressure monitoring and displacement fluid injection and production at a certain point at the same time. Figure 1A combine Figure 1B As shown: the main body of the instrument is a cuboid container 1 with a length of 50 mm, a width of 25 mm, a height of 25 mm, and a wall thickness of 7 mm. The container has a built-in baffle 3-3, and the baffle 3-3 divides the container evenly into the left chamber 3-1 and The right chamber 3-2, the liquid inside the two chambers cannot cross-flow; the left chamber 3-1 and the center of the upper end surface of the right chamber 3-2 are respectively provided with a left bolt hole 3-4 and a right bolt hole 3-4 with a diameter of 5 mm. Bolt holes 3-5, left chamber 3-1 and right chamber 3-2 are symmetrically arranged on the lower end s...

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Abstract

The invention provides an indoor experiment device and a method for profile control using the device, which solves the problem that the existing indoor experiment cannot judge the position and size of the hyperpermeable strip formed in the process of polymer flooding. Specifically, an integrated injection-production instrument for pressure measurement is invented, which is arranged on a two-dimensional planar well pattern heterogeneous core model; the one-dimensional core is used to find out the relationship between the pore volume and the pressure gradient of the high-permeability zone, and through pressure measurement The injection-production integrated instrument measures the pressure values ​​of each pressure measuring point, and calculates the pressure gradient between each point; finds the relationship between the pressure gradient and the pore volume of the hyperpermeable zone, and determines the pore volume of the hyperpermeable zone according to the above relationship, and then The profile control agent with the same volume as the pore volume is injected into the hyperpermeable zone by using the piezometric injection-production integrated instrument to complete the profile control. The inventive device can accurately locate the position of the hypertonic zone and implement profile control for the hypertonic zone, so that the indoor profile control process is closer to the actual situation on site, and provides device and technical support for the indoor research of profile control technology.

Description

technical field [0001] The invention relates to a device and method for profile control in the field of oil and gas field development, in particular to a device and method for precise profile control of high-permeability strips during indoor experiments of polymer flooding. Background technique [0002] At present, polymer flooding has been applied on a large scale in various oil fields, and a good oil displacement effect has been achieved in the early stage. However, with the increase of production time, the effect of polymer flooding began to gradually deteriorate, and some areas even produced ineffective circulation, that is, the injection of a large amount of polymers has very little or no recovery of the remaining oil. The fundamental reason is that after many years of polymer flooding development, high-permeability strips have generally developed, leading to more prominent contradictions between layers and layers, causing the displacement fluid to rush into the high-pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 皮彦夫刘丽王洪卫李泉志龚亚李静高晶
Owner NORTHEAST GASOLINEEUM UNIV
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