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Double-hole physical model and manufacturing method and application thereof

A technology of physical model and production method, applied in the field of geophysical research, can solve the problems of destroying artificial sandstone structure, affecting the effect of epoxy cementation, difficult division and prediction, etc., and achieves good repeatability

Active Publication Date: 2014-03-05
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In two deep wells with a distance of less than 1km, often one well is highly productive and the other is a dry well, which makes it very difficult to divide and predict the spatial distribution of fracture systems only by relying on traditional surface geological data and drilling and logging data.
Although there was a production process of using epoxy resin to cement quartz sand, embedding metal flakes at the same time, and separating the metal flakes by pickling to form cracked artificial sandstone, the artificial sandstone made of epoxy resin cemented quartz sand has a high mineral composition. , The pore structure is also very different from the actual sandstone. At the same time, pickling may not completely separate the metal flakes, but it will affect the effect of epoxy cementation and destroy the structure of the artificial sandstone.

Method used

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  • Double-hole physical model and manufacturing method and application thereof
  • Double-hole physical model and manufacturing method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0042] This embodiment provides a method for making a dual-pore physical model, such as figure 1 As shown, it includes the following steps:

[0043] 500 g of 200-mesh quartz sand, 50 g of 350-mesh feldspar, 50 g of 500-mesh kaolin and 50 g of 800-mesh talc were mixed by ball milling, and after mixing evenly, a mixed powder was obtained;

[0044] Add 65g of water glass (the water glass has a modulus of 2.0 and a density of 1.2g / cc) into the mixed powder, put it into a mixer and stir and mix evenly to obtain a mixed material;

[0045] After smearing vaseline around the cleaned and assembled mold, spread 30mL of the mixed material into the mold evenly, and evenly lay 200 polymer material sheets on the layer of mixed material (the polymer material sheet has a thickness of 0.06 mm and has thermal decomposition and gasification performance of polymethyl methacrylate sheet with a diameter of 3mm, which is a thin sheet of polymer material punched by a punch with a diameter of 3mm), l...

Embodiment 2

[0050] This embodiment provides a method for manufacturing a dual-pore physical model, which is basically the same as that of Embodiment 1, except that the polymer material sheet has a thickness of 0.5 mm and a diameter of 6 mm, which is 6 mm in diameter. The punch punches the polymer material into thin sheets, and the number of evenly laid polymer material sheets on each layer of mixed material is 20.

[0051] After testing, the density of the double-pore physical model in this embodiment is about 2.1g / cc; the porosity is about 22%; The longitudinal wave velocity in the plane direction is 2549m / s, and the shear wave velocity is 1407m / s. Therefore, the longitudinal wave anisotropy of the dual-pore physical model is 10.51%, and the shear wave anisotropy is 11.23%. The crack thickness of the dual-pore physical model in this embodiment is 0.5 mm, the crack diameter is 6 mm, and the crack density is 5.5% (based on the total volume of the dual-pore physical model). This dual-pore...

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Abstract

The invention provides a double-hole physical model and a manufacturing method and application thereof. The manufacturing method includes the following steps that ball-milling mixing is carried out on quartz sand, feldspar, kaolin and talc to obtain mixed powder; agglomerant is added to the mixed powder, blending and mixing are carried out, and mixed materials are obtained; the mixed materials are laid in a die layer by layer, a high polymer material sheet is laid on each layer of the mixed materials, and multiple layers of the mixed materials and the high polymer material sheets are laid; the die is compacted to obtain a blank, the blank is dried and sintered in sequence, and the double-hole physical model is obtained. The double-hole physical model is obtained through the manufacturing method. The invention further provides the application of the double-hole physical model in seismic wave response simulation study of crack oil and gas reservoirs. The double-hole physical model containing controllable cracks can be obtained by means of the manufacturing method.

Description

technical field [0001] The invention relates to a double-pore physical model, a manufacturing method and application thereof, and belongs to the technical field of geophysical research of oil and gas exploration and development. Background technique [0002] Fractures are an important type of underground oil and gas storage space. According to the origin, it can be divided into: structural fractures, diagenetic fractures, sedimentary-structural fractures, pressure-solution fractures, and dissolution fractures. The internal cause of fracture development mainly depends on the brittleness of rock. The structural factors controlling cracks are mainly the strength and nature of the force, the number of stresses, the deformation environment, and the deformation stage. [0003] Fractured reservoir is one of the most important oil and gas reservoirs. Oil and gas reservoirs of industrial value exist in carbonate rocks, tight sandstones, mudstones, igneous rocks, and metamorphic ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/00G01V1/28
Inventor 丁拼搏狄帮让魏建新栾鑫元
Owner BC P INC CHINA NAT PETROLEUM CORP