Specially-prepared large-diameter sand filling model device for physical simulation experiments and method thereof

A technology of physical simulation and model device, applied in the preparation of test samples, earthwork drilling, measurement, etc., can solve problems such as low compressive strength, high pressure resistance requirements, and limited field condition simulation

Active Publication Date: 2018-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some achievements have been made, but there are still some problems: in the water flooding experiment, on the one hand, the flat sand filling model has serious problems of insufficient compaction and "water channeling", on the other hand, the compressive strength is not high, and it cannot simulate the edge well. Bottom water, which l

Method used

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  • Specially-prepared large-diameter sand filling model device for physical simulation experiments and method thereof
  • Specially-prepared large-diameter sand filling model device for physical simulation experiments and method thereof
  • Specially-prepared large-diameter sand filling model device for physical simulation experiments and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Take the formula listed in Table 1 below as an example. Weigh the quartz sand and clay of different particle groups according to the proportion, and perform wettability treatment on the surface of part of the quartz sand according to the need, so as to achieve the mixed wetting effect. According to the above scheme, a sand filling model was made and a conventional water flooding + injection-production coupling + gas-water dual drive experiment was carried out. The sealing cap 3 at the left pipe end is in the lower part, and the injection-production well hole 4 simulates the simple injection-production unit of the oil reservoir, which is close to the left pipe The well hole (lower part) of the end sealing cover 3 is used as the water injection well, the well hole (upper part) near the right pipe end sealing cover 6 is used as the production well, and the left and right ends of the model can be used as pressure monitoring points. Water flooding to 95% water cut, calculate ...

Embodiment 2

[0061] The formula listed in Table 2 below is taken as an example, and the quartz sand and clay of different particle groups are weighed in proportion, and the surface of the quartz sand is subjected to wettability treatment according to the research needs, so as to achieve the lipophilic wetting effect. According to the above scheme, a sand filling model was made to carry out chemical agent evaluation experiments. The inclination angle of the model was less than 10°. The sealing cap 3 at the left pipe end was in the lower part. The injection-production well hole 4 simulated the simple injection-production unit of the oil reservoir, and was close to the sealing cap 3 at the left pipe end. The wellbore (lower part) of the model is used as an injection well, the wellbore (upper part) close to the right pipe end sealing cover 6 is used as a production well, and the left and right ends of the model can be used as pressure monitoring points. The injection end uses a high-precision I...

Embodiment 3

[0065] The formula listed in Table 3 below is taken as an example, and the quartz sand and clay of different particle groups are weighed in proportion, regardless of the wetting of the rock surface. Due to the characteristics of quartz sand, the wettability of the model should be strongly hydrophilic. According to the above scheme, a sand filling model was made to carry out side water flooding experiments. The inclination angle of the model was less than 5°, the left pipe end sealing cap 3 was at the lower part, and the well hole of the left pipe end sealing cap 3 was used as a water injection well. The wellbore (upper part) is used as the production well, and the wellbore (lower part) at the right end of the model and the sealing cover 3 near the left pipe end is used as the pressure monitoring point. Investigating the production effect of the pure edge water flooding development strategy, the dry weight of sand filling is 102.4 kg, the pore volume is 4219.6 ml, the saturated...

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Abstract

The invention discloses a specially-prepared large-diameter sand filling model device for physical simulation experiments and a method thereof, wherein the device includes a model pipe body; the modelpipe body comprises a main pipe body; the main pipe body is a cut-through pipe body, the left end and the right end of the main pipe body are respectively blocked with a left pipe end seal cover anda right pipe end seal cover; the inner end face of the left pipe end seal cover is provided with a left screen pressing plate, and a coarse screen and a fine screen are respectively mounted between the inner end face of the left pipe end seal cover and the left screen pressing plate; a right screen pressing plate is mounted at an inner end face of the right pipe end seal cover, and a coarse screenand a fine screen are respectively mounted between the inner end face of the right pipe end seal cover and the right screen pressing plate; the main pipe body is provided with a simulation injection-production well hole or a pressure measuring hole. The device and the method not only can simulate the edge-bottom water characteristics of an actual oil reservoir, but also can simulate the artificial gas-cap drive characteristics of a mine field.

Description

technical field [0001] The invention relates to a sand-filling model, in particular to a special large-diameter sand-filling model device and method for physical simulation experiments. Background technique [0002] In the process of oil and gas field development, reservoir physical simulation experiments have always been an important means for petroleum scientists to understand and master the law of oil-water seepage in reservoirs, and how to improve the similarity between laboratory experiments and mine field simulations has always been a difficult problem for researchers to seek breakthroughs . In consideration of safety and cost, the application of relevant technologies first obtains the required data through experiments with sand-packing models, especially for complex fault-block reservoirs, which require a combination of various means or technologies to improve recovery, such as injection-production coupling, edge Water flooding, gas-water dual flooding, etc., put for...

Claims

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Application Information

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IPC IPC(8): G01N1/28E21B49/00E21B47/06
CPCE21B47/06E21B49/00G01N1/28
Inventor 杨海博杨勇张红欣王建孙志刚王瑞于春磊刘丽孙宝泉张民马炳杰陈亚宁孟小海王胜王曦张玉利明玉坤张亮
Owner CHINA PETROLEUM & CHEM CORP
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