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Reservoir simulation unit and gas dissolution distribution evaluation device and method thereof

A technology of simulation unit and evaluation device, which is applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., to achieve the effects of fast heating rate, precise and controllable temperature and pressure, and excellent temperature uniformity.

Pending Publication Date: 2021-08-17
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For simulated CO 2 The device for dissolution in the crude oil-formation water system has not been reported in the art

Method used

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  • Reservoir simulation unit and gas dissolution distribution evaluation device and method thereof
  • Reservoir simulation unit and gas dissolution distribution evaluation device and method thereof
  • Reservoir simulation unit and gas dissolution distribution evaluation device and method thereof

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Experimental program
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experiment example

[0142] Concrete experimental operation and application of experimental example, device of the present invention

[0143] 1. The specific experimental operation of this device is as follows:

[0144] (1) Prepare the simulated fluid according to the reservoir conditions, including oil and water, with a total amount of more than 10L each, and the gas volume is determined according to the gas-oil ratio of the reservoir.

[0145] (2) Connect the injection system, oil-gas-water separation metering, and calibration.

[0146] (3) Temperature and pressure test, the model is first filled with simulated experimental water or pure water, and floated 15% according to the temperature and pressure conditions of the reservoir, and the process temperature and pressure test is carried out, and the test stability time is not less than 4 hours.

[0147] (4) Fill the quartz sand with different mesh ratios into the model, fill the water first, and then fill the sand. It is advisable to ensure that...

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Abstract

The invention discloses a reservoir simulation unit and a CO2 dissolution distribution evaluation device and method thereof, and belongs to the technical field of oilfield development. The reservoir simulation unit comprises a container capable of being closed; a partition communication component is arranged in the container and divides the container into a sand filling chamber and a bottom water chamber, and the sand filling chamber and the bottom water chamber are communicated through the partition communication component; the sand filling chamber is located on the upper portion of the bottom water chamber; and a plurality of injection and production openings are formed in the container wall, corresponding to the area where the sand filling chamber is located, of the container at different heights. The reservoir simulation unit and the CO2 dissolution distribution evaluation device and method thereof are suitable for CO2 gas injection dissolution evaluation and can effectively meet the experimental requirements for gas injection dissolution evaluation of N2, CO2+ N2 composite gas, flue gas and the like.

Description

technical field [0001] This patent belongs to the technical field of oil field development, and specifically relates to a reservoir simulation unit and its gas dissolution distribution evaluation device and evaluation method. Background technique [0002] The Triassic oil reservoirs in Tahe Oilfield can recover more than 15 million tons, accounting for 69.7% of clastic rock reserves. The current recovery rate is 28.9%, and the reservoirs have entered a stage of high water cut. The reservoir temperature is 110°C, the pressure is 49.1MPa (original pressure 49.8MPa), and the formation water salinity is 213.3g / L. It has the characteristics of strong water body, high reservoir temperature and pressure, and high salinity of formation water. CO injection in reservoirs 2 During the oil flooding process, it is necessary to fully consider the influence of water body and grasp the CO 2 Dissolution distribution in crude oil-formation water system is an urgent problem to be solved in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B43/16
CPCE21B49/00E21B43/164E21B43/168
Inventor 马冬晨刘学利赵瑞明贾星亮陈蒲礼胡梅汪霞惠健谭涛侯东升张子轶徐征遥郑小杰陈勇
Owner CHINA PETROLEUM & CHEM CORP
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