Unlock instant, AI-driven research and patent intelligence for your innovation.

A method and system for judging the formation time of ultra-high water-bearing zones

A technology with extremely high water content and time, applied in the fields of earthwork drilling, data processing application, measurement, etc., can solve the problem of no judgment method, etc., and achieve the effect of reducing the impact and speeding up the speed.

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the judgment of the formation time of the ultra-high water-bearing zone mostly depends on direct empirical observation, and there is no specific judgment method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method and system for judging the formation time of ultra-high water-bearing zones
  • A method and system for judging the formation time of ultra-high water-bearing zones
  • A method and system for judging the formation time of ultra-high water-bearing zones

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0079] This Example 1 provides a method for identifying the formation of an ultra-high water-bearing zone using only production data, which includes the following steps:

[0080] 1) Specific implementation method

[0081] Step 1: Use the liquid production rate and oil production rate in the production dynamic data to calculate the data required to draw the Type C water drive curve, and judge whether it conforms to the characteristics of the Type C water drive curve.

[0082] Step 2: Calculate the water drive movable reserve R at each moment mo , and judge the formation time of ultra-high water-bearing zone.

[0083] 2) Concrete example

[0084] Using numerical simulation software, a one-dimensional linear model is established, and the method provided by the embodiment of the present invention is used to calculate the formation time of the ultra-high water-bearing zone.

[0085] The built model is as figure 2 As shown, there are 21 × 1 × 1 = 21 grids, the grid length is 10...

example 2

[0100] Example 2 of this example provides a method for identifying the formation of an ultra-high water-bearing zone using only field production data, which includes the following steps:

[0101] 1) Specific implementation method

[0102] Step 1: Use the liquid production rate and oil production rate in the production dynamic data to calculate the data required to draw the Type C water drive curve, and judge whether it conforms to the characteristics of the Type C water drive curve. If so, it is suitable to continue.

[0103] Step 2: Calculate the water drive movable reserve R at each moment mo , and judge the formation time of ultra-high water-bearing zone.

[0104] 2) Concrete example

[0105] The examples used come from the data of the plugging and adjustment test area of ​​Gudong Oilfield, and the production data of this test area are more in line with the C-type water drive curve.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and system for judging the formation time of an ultra-high water-cut zone. The method includes: obtaining production data of a production well; drawing a Type C water drive curve by using the production data of the production well, and judging whether it conforms to Type C The characteristics of the water drive curve; if it conforms to the characteristics of the C-type water drive curve, the theoretical movable oil reserves at each time are calculated based on the C-type water drive curves at different times; compare the initial and later data of the theoretical movable oil reserves to judge the ultra-high water cut zone formation time. The invention only utilizes the production data of the normal production of the oil well, thereby reducing the influence of the oil well operation on the normal production, and speeding up the judgment of the ultra-high water-bearing zone.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, specifically relates to a method for judging the formation time of an ultra-high water-cut zone, and more particularly relates to a method and system for directly judging the formation time of an ultra-high water-cut zone by only using production dynamic data. Background technique [0002] Most water flooding oilfields in my country have entered the development stage of high water cut and ultra-high water cut, and a large part of them is due to the ineffective circulation of water injection caused by the channeling of ultra-high water-cut zone, which affects the swept volume of water flooding. Therefore, it is particularly important to judge the formation of ultra-high water-cut zone. important. At present, the judgment of the formation time of the ultra-high water-bearing zone mostly depends on direct empirical observation, and there is no specific and specific judgment meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B43/20G06Q50/02
CPCE21B47/00E21B43/20G06Q50/02
Inventor 靳彦欣史树彬黄志宏尹相文汪云家陈玉丽宋岱锋李福军唐钢刘军
Owner CHINA PETROLEUM & CHEM CORP