Gas reservoir water-producing gas well parameter prediction method and device, electronic equipment and medium

A prediction method and parameter technology, applied in the direction of complex mathematical operations, etc., can solve the problems of inability to evaluate reservoirs with high movable water saturation, inability to evaluate reservoir parameters and gas well parameters, and few map fitting methods, etc., to achieve improvement Inaccurate, easy to operate, parameters to get fast results

Pending Publication Date: 2021-11-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the water body impact stage curve of the production data cannot be reasonably divided, there will be large errors in the evaluation results
At the same time, this method cannot evaluate reservoirs with high movable water saturation, that is, reservoirs containing movable formation water. At this time, the gas well has been in the stage of formation water influence of two-phase flow from the beginning of production, so this method cannot

Method used

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  • Gas reservoir water-producing gas well parameter prediction method and device, electronic equipment and medium
  • Gas reservoir water-producing gas well parameter prediction method and device, electronic equipment and medium
  • Gas reservoir water-producing gas well parameter prediction method and device, electronic equipment and medium

Examples

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Embodiment 1

[0148] figure 1 A flow chart showing the steps of the method for predicting parameters of a water-producing gas well in a gas reservoir according to the present invention.

[0149] Such as figure 1 As shown, the method for predicting water-producing gas well parameters in this gas reservoir includes: step 101, calculating the relative permeability of the water phase and gas phase; step 102, establishing the equivalent phase seepage equation of the water phase and gas phase, and then determining the equivalent phase Blasingame production analysis Plate; step 103, calculate equivalent phase material balance quasi-time and equivalent phase regularization production related parameters, draw the relational curve of equivalent phase regularization production related parameters and material balance quasi-time; step 104, relation curve in equivalent Fitting is performed on the Blasingame production analysis chart to determine the fitting value; step 105, calculate the gas well parame...

Embodiment 2

[0171] Figure 8 A block diagram of a device for predicting parameters of gas wells producing water in gas reservoirs according to an embodiment of the present invention is shown.

[0172] Such as Figure 8 As shown, the parameter prediction device for water-producing gas wells in this gas reservoir includes:

[0173] The permeability calculation module 201 calculates the relative permeability of the water phase and the gas phase;

[0174] Plate establishment module 202, establishes the equivalent phase seepage equation of water phase and gas phase, and then determines the equivalent phase Blasingame output analysis plate;

[0175] The relationship curve drawing module 203, calculates the equivalent phase material balance pseudo time and the equivalent phase regularization production related parameters, and draws the relationship curve between the equivalent phase regularization production related parameters and the material balance pseudo time;

[0176] The fitting module ...

Embodiment 3

[0195] The present disclosure provides an electronic device comprising: a memory storing executable instructions; a processor running the executable instructions in the memory to implement the above method for predicting parameters of gas wells producing water in gas reservoirs.

[0196] An electronic device according to an embodiment of the present disclosure includes a memory and a processor.

[0197] The memory is used to store non-transitory computer readable instructions. Specifically, the memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache). The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, and the like.

[0198] The processor may be a central processing unit (CPU) or other form of processing ...

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Abstract

The invention discloses a gas reservoir water-producing gas well parameter prediction method and device, electronic equipment and a medium. The method comprises the following steps: calculating the relative permeability of a water phase and a gas phase; establishing an equivalent phase seepage equation of a water phase and a gas phase, and further determining an equivalent phase Blasingame yield analysis chart; calculating equivalent phase material balance quasi-time and equivalent phase regularized yield related parameters, and drawing a relation curve between the equivalent phase regularized yield related parameters and the material balance quasi-time; the relation curve is fitted in an equivalent phase Blasingame yield analysis chart, and a fitting value is determined; and gas well parameters are calculated through the fitting values. According to the method, dynamic analysis of the water-producing gas well is achieved, the result obtained through fitting better conforms to the actual stratum and production condition, and the method is easy to operate, fast in parameter obtaining and high in practicability.

Description

technical field [0001] The invention relates to the field of oil and gas field development, and more specifically, to a method, device, electronic equipment and medium for predicting parameters of water-producing gas wells in gas reservoirs. Background technique [0002] With the gradual development of oil and gas fields to unconventional gas reservoirs, the research on water-bearing gas reservoirs has gradually increased. For gas reservoirs with high movable water saturation, formation water is also produced during gas well production, presenting gas-water two-phase flow in gas wells. For the development of such water-bearing gas reservoirs, there will be large errors in the parameter evaluation using the modern production decline analysis method of conventional single-phase gas wells, so the research on the dynamic parameters of water-producing gas wells and the quantitative evaluation methods of reservoir parameters are very important for the development of such gas reser...

Claims

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Application Information

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IPC IPC(8): G06F17/13G06F17/18
CPCG06F17/13G06F17/18
Inventor 于清艳胡向阳贾英糜利栋
Owner CHINA PETROLEUM & CHEM CORP
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