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Interpretation method of steam suction profile in thermal recovery well based on online test and geological parameters

An on-line testing and geological parameter technology, applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., can solve the problem of uneven gas absorption and production in reservoirs, lack of timing for soaking wells and blowouts, single wells and well groups Insufficient adaptability and other problems to achieve the effect of improving development efficiency and improving steam injection quality

Active Publication Date: 2019-09-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

In the development process, there are uneven steam absorption and production in the reservoir, the inability to accurately evaluate the steam absorption and production effect of each well section, the steam injection intensity optimized by digital simulation is not strong adaptable to single wells and well groups, and the timing of well drying and blowout is lacking. Reliable scientific basis and other development difficulties

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  • Interpretation method of steam suction profile in thermal recovery well based on online test and geological parameters
  • Interpretation method of steam suction profile in thermal recovery well based on online test and geological parameters
  • Interpretation method of steam suction profile in thermal recovery well based on online test and geological parameters

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Embodiment Construction

[0041] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below in conjunction with the drawings, which are described in detail as follows.

[0042] Such as figure 1 As shown, figure 1 It is a flowchart of the method for explaining the steam absorption profile of a thermal recovery well based on online testing and geological parameters of the present invention.

[0043] In step 101, a steam flow and heat transfer model in a vertical wellbore is established. Based on the two assumptions of steady-state heat transfer in the wellbore and unsteady-state heat transfer in the formation, through the establishment of the wellbore heat transfer mathematical model, the establishment of the wellbore pressure drop model, the two-phase flow wellbore dryness calculation and the wellbore heat loss calculation, the vertical Heat transfer model of steam flow in a vertical wellbore. Fitting the tem...

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Abstract

The invention provides an online test and geological parameter based steam injection profile interpretation method for a thermal-production-well. The online test and geological parameter based steam injection profile interpretation method for the thermal-production-well comprises the steps of: step 1, establishing a steam flow heat-transfer model in a vertical pit-shaft; step 2, carrying out horizontal-section steam flow law simulation, and finding a relation among the temperature, the pressure variation and the flow rate; step 3, establishing a steam injection profile fuzzy evaluation model; and step 4, carrying out a reservoir steam injection profile interpretation in combination with online test data and geological parameters. The online test and geological parameter based steam injection profile interpretation method for the thermal-production-well guides the optimization of steam injection volume, the blowout opportunity and steam injection tubular column matching and further improves the benefits of viscous oil development.

Description

Technical field [0001] The invention relates to the field of oil production engineering, in particular to a method for explaining the steam absorption profile of a thermal recovery well based on online testing and geological parameters. Background technique [0002] Crude oil in heavy oil reservoirs has high viscosity and poor flow ability under formation conditions. Steam injection thermal recovery is the main method for heating oil reservoirs and exploiting heavy oil. During the development process, there are uneven steam absorption and production in the reservoir, inability to accurately evaluate the steam absorption and production effects of each well section, the steam injection intensity optimized by digital simulation is not suitable for single wells and well groups, and the timing of simmering wells and blowout is lacking. Reliable scientific basis and other development difficulties. For this reason, we invented a new method for explaining the steam absorption profile of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50E21B43/24
Inventor 肖淑明张丁涌张乃峰常国胜朱桂平万惠平张学军许德广
Owner CHINA PETROLEUM & CHEM CORP
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