Method for producing artificial sandstone for tertiary oil production in oil field

A technology of artificial sandstone and a manufacturing method, which is applied in the preparation of test samples, manufacturing tools, ceramic molding machines, etc., can solve problems such as the inability to truly express the permeability of underground rocks.

Inactive Publication Date: 2005-03-02
中国石油大港油田油气勘探开发技术研究中心
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AI Technical Summary

Problems solved by technology

At present, most domestic research institutes use loose sand-filled pipe cores or artificial cores cemented with epoxy resin. These cores cannot truly express the real permeability of underground rocks.

Method used

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  • Method for producing artificial sandstone for tertiary oil production in oil field

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Embodiment Construction

[0008] In order to further understand the content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0009] see figure 1

[0010] 1) Quartz sand is screened:

[0011] The purchased quartz sand is sieved with a standard sorting sieve, and the specific quartz sand meshes are: 30, 50, 70, 100, 300 mesh. The screening method is, if the 30-mesh quartz sand is sieved, use a combination of 30-mesh and 40-mesh standard sieves, and the remaining part is the middle part that has passed the 30-mesh sieve but not the 40-mesh sieve. The quartz sand that has not passed the 30-mesh sieve is no longer used, and the part that has passed the 40-mesh sieve is used to sort the 50-mesh quartz sand.

[0012] For the selection of clay, the purchased clay (kaolin) is dried at 150°C, and then ground into a fine powder below 300 mesh with a grinder for subsequent use.

[0...

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Abstract

The invention relates to an artificial sandstone manufacture method of oil field tertiary oil recovery, basically including the following steps that firstly using aluminium phosphate to cement quartz sand having different particle diameter, which is then to be pressed by sixty t hydraulic press, dried wet core to increase temperature gradient warm up from 150 deg. to 960 deg. Under which the substance needed is produced. Preparation of cementitious agent includes the water is added after match of aluminium hydroxide and phosphoric acid, which is heated on electric furnace to boil then moved away and then heated to boil again, lasting ten minutes. Artificial anisotropic core created by the invention can practically express practical coefficient of permeability of underground rock, simulate practical condition of underground oil layer and do physical simulation experiment of core edge-water encroachment in doors.

Description

technical field [0001] The invention belongs to a method for making an indoor rock core flooding physical simulation experiment article for increasing the recovery rate of an oil field, in particular to a method for making artificial sandstone for oil field tertiary oil recovery. Background technique [0002] Before the currently known tertiary oil recovery technology is applied in the field, it is necessary to verify the extent to which the technology enhances the recovery factor through indoor core physical simulation experiments. The enhanced oil recovery generally needs to be greater than 10% before entering the field test. The key to the indoor core physical simulation experiment is the core. The cores obtained by drilling sealed coring are firstly too small and not representative; secondly, they have no heterogeneity and cannot fully simulate the real situation of underground oil layers. Therefore, artificial heterogeneous cores must be used for indoor core flooding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/00C04B22/00G01N1/28
Inventor 杨怀军陈智宇陈平杨德华张景春于娣
Owner 中国石油大港油田油气勘探开发技术研究中心
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