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Testing method of constant volume exhaustion of fluid in condensate gas reservoir

A technology of condensate gas reservoir and test method, which is applied in the field of high-pressure physical property test of oil and gas reservoir fluid, can solve problems such as failure to reflect the depletion production process of condensate gas reservoir fluid, inconsistency between experimental data and actual production, etc.

Inactive Publication Date: 2007-05-30
PETROCHINA CO LTD
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AI Technical Summary

Problems solved by technology

To overcome the current PVT analysis of isovolumic depletion test method of condensate gas reservoir fluid can not truly reflect the production process of condensate gas reservoir fluid depletion, resulting in the experimental data inconsistent with the actual production

Method used

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  • Testing method of constant volume exhaustion of fluid in condensate gas reservoir
  • Testing method of constant volume exhaustion of fluid in condensate gas reservoir
  • Testing method of constant volume exhaustion of fluid in condensate gas reservoir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0093] During the constant volume depletion test of a certain sample, at a formation temperature of 120°C, starting from a dew point pressure of 50.00MPa, the fluid volume is always constant at 80mL. Step-down, respectively 45MPa, 40MPa, 35MPa, 30MPa, 25MPa, 20MPa, 15MPa, 10MPa, 5MPa, 0.1MPa. Discharge fluid, measure oil and gas production, and analyze components of oil and gas respectively. Through calculation, the recovery rate of natural gas and condensate oil in the process of fluid depletion in gas condensate reservoirs is obtained.

[0094] Flash experiment under formation conditions, the method is the same as the industry standard, briefly described:

[0095] Drain 80mL of fluid at formation temperature and 50.00MPa to obtain 22900mL of flash gas and 5.5mL of condensate oil.

[0096] Examples of steps of constant volume depletion test method for PVT analysis of gas condensate reservoir fluids:

[0097] 1. The total volume of the sample is read as 80mL under the dew p...

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Abstract

The constant volume prostration test method of condensate gas flow-storing body is used in resource assessment of oil field gas flow-storing body. It characterized in that in course of the constant volume prostration test, constant liquid volume is decompressed stepped from the dew-point pressure in geological strata temperature to discharge liquid, the output of oil and gas is measured, component analysis of oil and gas is preceded. The recovery ratio of natural gas and condensate oil and residual spray mixture in production of condensate gas flow-storing body is obtained by calculation. The dynamic performance of prostration dislodging of hydrocarbon reservoir can be simulated actually, the dynamic parameters which is conformed to the reality in different class of prostration pressures are collected, accurate recovery coefficient and amount of residuum is supplied.

Description

technical field [0001] The invention relates to a resource evaluation test method for oil and gas reservoir fluids in an oil field, in particular to a high-pressure physical property test method for oil and gas reservoir fluids. Background technique [0002] PVT analysis is a high-pressure physical property test for fluids in oil and gas reservoirs, and PVT data is one of the indispensable main data for oil and gas field exploration and development. Its main purpose is to obtain the original physical and chemical property parameters of oil and gas reservoir fluids under high temperature and high pressure. Provide practical physical and chemical parameters for oil and gas resource evaluation, reserve calculation, preparation of development plans, selection of development methods, prediction and calculation of recovery factors, and provide practical physical and chemical parameters for secondary oil recovery and tertiary oil recovery, and analyze the compounding of hydrocarbon...

Claims

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Application Information

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IPC IPC(8): G01N33/26G01N30/02G01N7/14G06F19/00
Inventor 王旭林梁伯勋蒲建
Owner PETROCHINA CO LTD
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