Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A production decline analysis method and system for oil and gas wells

A technology of decreasing output and analysis method, applied in special data processing applications, instruments, electrical and digital data processing, etc. problem, to achieve the effect of improving the prediction accuracy

Active Publication Date: 2018-05-08
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, these three models are all empirical or semi-empirical models. When applied to field wells under the existing technical conditions, technicians often need to select them based on experience. Get sure and reasonable forecast results

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 production decline analysis method and system for oil and gas wells
  • A production decline analysis method and system for oil and gas wells
  • A production decline analysis method and system for oil and gas wells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] figure 1 It is a schematic composition diagram of the oil and gas well production decline analysis system provided by the embodiment of the present invention. From figure 1 It can be seen that the system mainly includes:

[0040] Data collection module 100, collecting daily output and cumulative output data;

[0041] The graph drawing module 200 draws the daily output and material balance time relationship curve according to the daily output and cumulative output data, and the material balance time is the ratio of the cumulative output to the daily output of the time corresponding to it; Curve derivation draws a characteristic line segment, and the characteristic line segment is a line segment whose slope is a specific value;

[0042] The model building module 300 judges the flow field type according to the distribution of the characteristic line segment in the daily output and material balance time relationship curve, and then establishes a corresponding output decl...

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 provides a method and system for analyzing oil and gas well production decline. The method includes: collecting daily output and cumulative output data; drawing a daily output and material balance time relationship curve according to the daily output and cumulative output data, and the material balance time is the ratio of the cumulative output to the daily output of the corresponding time, and then by Deriving the daily output and material balance time relationship curve to draw a characteristic line segment, the characteristic line segment is a line segment with a specific value; judge the flow field type according to the distribution of the characteristic line segment in the daily output and material balance time relationship curve, and then according to the flow field The corresponding production decline analysis model is established according to the type; finally, the production decline analysis is carried out according to the production decline analysis model. The present invention unifies commonly used production decline models under the same judgment rule, analyzes and selects the adaptability of the production decline model through flow field identification, and can effectively solve the technical problem of uncertain prediction results caused by blind selection of models in the prior art , which improves the accuracy of production dynamic prediction.

Description

technical field [0001] The invention relates to oil and gas exploration prediction technology, in particular to an oil and gas well production decline analysis method and system applicable to production analysis and dynamic evaluation of shale gas wells and other types of oil and gas wells. Background technique [0002] During the development of oil and gas wells (fields), it is necessary to analyze the production decline: (1) predict the dynamic changes in production, and provide a basis for the design of production capacity construction plans and adjustment plans; (2) guide the implementation of measures to delay production decline to achieve stable, high, The purpose of reasonable development; (3) To predict the dynamic change of production, to provide the basis for the prediction of recoverable reserves and recovery rate, and also provide the basis for the economic evaluation of oil and gas wells (fields). Due to the abundant resources and long stable production period, ...

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): G06F19/00
Inventor 庞伟张同义毛军杜娟贺英吴琼邸德家
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com