Laboratory experiment device and method for profile control with same

An experimental device and an integrated technology, applied in the field of profile control devices, can solve the problems of poor simulation of the mine field, inability to judge basic parameters such as the position and size of hyperpermeable strips, and inability to give accurate guidance and assistance to the site, etc.

Inactive Publication Date: 2016-01-20
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. Preci

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  • Laboratory experiment device and method for profile control with same
  • Laboratory experiment device and method for profile control with same
  • Laboratory experiment device and method for profile control with same

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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 to 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 e...

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Abstract

The invention provides a laboratory experiment device and a method for profile control with the same. The problem that the position, the size and the like of a high-permeability belt formed in the polymer flooding process cannot be judged through existing laboratory experiments is solved. The method particularly includes the steps that a pressure measuring and injection-production integrated instrument is invented and arranged on a two-dimensional planar well network heterogeneous core model; a one-dimensional core is used for finding out the relation between the pore volume of the high-permeability belt and the pressure gradient, pressure values of all pressure measuring points are measured through the pressure measuring and injection-production integrated instrument, and pressure gradients between all the points are calculated; the relation between the pressure gradient and the pore volume of the high-permeability belt is found out, and the pore volume of the high-permeability belt is determined according to the relation, and then a profile control agent with the same pore volume as the high-permeability belt is injected through the pressure measuring and injection-production integrated instrument to complete profile control. By means of the laboratory experiment device, the position of the high-permeability belt can be accurately positioned, profile control can be carried out on the high-permeability belt, the laboratory profile control process is closer to on-site actual conditions, and the device and technological support are provided for laboratory study on profile control technologies.

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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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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