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

A method for inversion and interpretation of production profiles of fractured horizontal wells in low-permeability gas reservoirs

A technology of production profile, inversion and interpretation, applied in earthwork drilling, wellbore/well components, instruments, etc., to achieve the effect of promoting efficient and economical development

Active Publication Date: 2021-08-24
SOUTHWEST PETROLEUM UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the application of temperature profile testing technology in the domestic petroleum field mainly focuses on qualitative judgment of fluid type, identification of water outlet location and monitoring of downhole tool working conditions, and quantitative interpretation of the production profile of fractured horizontal wells in low-permeability gas reservoirs based on temperature profile test data and fracture flow at all levels are basically blank

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 for inversion and interpretation of production profiles of fractured horizontal wells in low-permeability gas reservoirs
  • A method for inversion and interpretation of production profiles of fractured horizontal wells in low-permeability gas reservoirs
  • A method for inversion and interpretation of production profiles of fractured horizontal wells in low-permeability gas reservoirs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0050] like figure 1 As shown in the present invention, a low-permeability gas reservoir fracturing horizontal well production profile inversion interpretation method takes the low-permeability gas reservoir fracturing horizontal well as the target fracturing horizontal well, and takes the fracture half-length distribution as the inversion target parameter As an example, the specific steps of inversion and interpretation of the production profile of a fractured horizontal well in a low-permeability gas reservoir using the method d...

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 an inversion interpretation method for the production profile of a fractured horizontal well in a low-permeability gas reservoir. N ;Calculate the current fitting evaluation objective function; generate a new fracture half-length distribution and calculate a new fitting evaluation objective function; compare the new fitting evaluation objective function with the current fitting evaluation objective function; generate a Markov chain, output The current inversion solution of the fracture half-length distribution; verify whether the simulated production corresponding to the current inversion solution of the fracture half-length distribution converges to the measured production, and output the inversion solution of the fracture half-length distribution; input the obtained fracture half-length distribution inversion solution into the temperature normal The prediction model is used to calculate the inversion and interpretation results of fracture flow rates and production profiles of target fractured horizontal wells. The invention can quantitatively explain the production profile of the fracturing horizontal well of the low-permeability gas reservoir and the flow rate of fractures at all levels by inverting the measured temperature profile data.

Description

technical field [0001] The invention relates to an inversion interpretation method for the production profile of a fractured horizontal well in a low-permeability gas reservoir, belonging to the technical field of oil and gas reservoir development. Background technique [0002] At present, domestic low-permeability gas reservoirs are mainly developed by horizontal wells, and most of the horizontal wells require fracturing to obtain considerable gas production. Therefore, the effect of fracturing directly determines the water quality of low-permeability gas reservoirs. The productivity of flat wells is closely related to the economic benefits of low-permeability gas reservoir development. However, after the fracturing of horizontal wells in low-permeability gas reservoirs is put into production, technical problems such as unclear production profile, unknown flow rate contribution of a single fracture, and difficulty in determining the fracture size are common. Due to the fai...

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): E21B43/26E21B49/00G06F30/20G06Q50/02
CPCE21B43/26E21B49/00G06Q50/02G06F30/20
Inventor 罗红文李海涛李颖蒋贝贝崔小江刘畅朱晓萍邹顺良李保吉
Owner SOUTHWEST PETROLEUM UNIV
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