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A Prediction Method of Dry Gas Huff and Puff Effect in Tight Condensate Gas Reservoirs with High Water Cut

A condensate gas reservoir, compact technology, used in earth-moving drilling, wellbore/well components, etc.

Active Publication Date: 2021-07-30
PETROCHINA CO LTD
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Problems solved by technology

[0006] In order to solve the optimization problem of dry gas huff and puff parameters of high water-cut tight condensate gas reservoirs, the present invention provides a prediction method for dry gas huff and puff effects of high water-cut tight condensate gas reservoirs

Method used

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  • A Prediction Method of Dry Gas Huff and Puff Effect in Tight Condensate Gas Reservoirs with High Water Cut
  • A Prediction Method of Dry Gas Huff and Puff Effect in Tight Condensate Gas Reservoirs with High Water Cut
  • A Prediction Method of Dry Gas Huff and Puff Effect in Tight Condensate Gas Reservoirs with High Water Cut

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Embodiment Construction

[0058] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0059] This example provides a method for predicting the effect of dry gas huff and puff in tight gas condensate reservoirs with high water cut, see figure 1 , the method flow is as follows:

[0060] Step 101: Obtain factors influencing recovery of dry gas huff and puff in tight condensate gas reservoirs with high water content, and determine the value range of the factors, which include geological parameters and injection-production parameters;

[0061] Specifically, in order to study the effect of dry gas huff and puff in high water-cut tight condensate gas reservoirs, firstly, from the perspective of geological parameters, the factors affecting the recovery of high water-cut tight condensate gas reservoirs are comprehensively analyzed. The main geol...

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Abstract

The invention discloses a method for predicting the dry gas huff and puff effect of tight condensate gas reservoirs with high water content, and belongs to the technical field of oil and gas field development. The method includes: obtaining the factors influencing the recovery factor of dry gas huff and puff of the high water-cut tight gas condensate reservoir, determining the value range of the said influencing factors, said influencing factors including geological parameters and injection-production parameters; according to said high water-cut tight Influencing factors and value ranges of recovery factor of dry gas huff and puff in condensate gas reservoirs, using response surface method to establish a prediction model of recovery factor increment of dry gas huff and puff of high water-cut tight condensate gas reservoirs under the interaction of multiple influencing factors; According to the recovery increment prediction model and the geological parameters of the gas reservoir to be produced, the extreme value of the recovery increment, the optimum injection volume and the optimum gas injection timing within the value range of the injection-production parameters are obtained, A prediction method is provided for the effect of dry gas huff and puff in tight condensate gas reservoirs with high water content, and the injection-production parameters are precisely and quantitatively optimized, so that the injected dry gas can be utilized to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, in particular to a method for predicting the effect of dry gas huff and puff in tight condensate gas reservoirs with high water content. Background technique [0002] High water-cut tight condensate gas reservoirs are low-porosity, tight reservoirs with high water saturation and poor fluid seepage capacity. During the development of tight gas condensate reservoirs with high water content, due to the complex phase change of the fluid, condensate oil will be precipitated in the formation, forming a three-phase co-seepage of oil, gas and water, which will further increase the resistance of seepage. The dry gas huff and puff technology, as one of the methods to effectively improve the recovery of tight gas condensate reservoirs with high water content, has received extensive attention. [0003] The existing dry gas huff and puff technology for tight gas condensate reservoirs wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 李骞李鹭光钟兵杨洪志徐伟邓惠常程李明秋杨柳
Owner PETROCHINA CO LTD
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