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

A Method of Measuring and Adjusting Water Injection Wells in Oil Fields Using Indicating Curves

A technology for oilfield water injection and indicating curves, which is applied in the directions of measurement, earthwork drilling and production, wellbore/well components, etc., can solve the problems of low efficiency and high cost, and achieve the effect of improving measurement and adjustment efficiency, simple method, and easy to popularize

Active Publication Date: 2011-12-28
DAQING OILFIELD CO LTD +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the high cost and low efficiency of existing water well testing and adjustment, the present invention provides a method for using indicator curves to monitor and adjust oilfield water injection wells. This method can realize rapid testing and adjustment without changing the original water injection string process and process, and no cost input

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 of Measuring and Adjusting Water Injection Wells in Oil Fields Using Indicating Curves
  • A Method of Measuring and Adjusting Water Injection Wells in Oil Fields Using Indicating Curves
  • A Method of Measuring and Adjusting Water Injection Wells in Oil Fields Using Indicating Curves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific embodiment:

[0016] The invention originates from the inventor's new understanding of the surveying and adjustment method of the oilfield water injection well in the oilfield exploration and the actual test effect analysis on the spot.

[0017] A method for measuring and adjusting water injection wells in oilfields by using indicator curves, comprising the following steps:

[0018] ①The instrument is lowered to the section at the end, and the first test is carried out according to the injection volume of the whole well. 1 1～n ) and flow value (B 1 1～n ), find out the flow value (B 1 1～n ) corresponds to the overcurrent pressure loss value (C 1 1～n ), and the flow pressure value (A 1 1～n ), the flow pressure loss of the faucet (C 1 1～n ) value, formation seepage pressure loss value (D 1 1～n ) and average formation pressure (P 1～ n ) satisfies formula (1), seepage pressure l...

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

A method for surveying and adjusting water injection wells in oil fields by using indicator curves. It mainly solves the problem of high cost of the existing water well surveying and adjustment. It is characterized in that: according to the injection volume of the whole well and 150% of the injection volume, two tests are carried out successively, and according to the flow pressure value and flow value obtained from the test, the overcurrent pressure loss value is found out by comparing the flow nozzle curve chart of the process design, and the obtained The average pressure of the formation and the water absorption coefficient of the formation; when keeping a certain water nozzle constant and meeting the geological requirements of injection volume, check the water nozzle curve chart to get the value of the overcurrent pressure loss, and then get the value that should be before the water nozzle in this layer. Flow pressure value and flow pressure loss value, and finally get the diameter of the faucet. This method can realize rapid measurement and adjustment, without changing the original water injection string process and water injection process, and without cost input.

Description

Technical field: [0001] The invention relates to a method for measuring and adjusting water injection wells in oil fields, in particular to a method for measuring and adjusting water injection wells in oil fields by using indicating curves. Background technique: [0002] Water injection is an effective way to maintain formation pressure and increase original recovery in oilfields, and well monitoring and adjustment is an important construction process to maintain sufficient and good water injection in wells. Water nozzles need to be replaced in the process of testing and adjustment of water wells, and the replacement of water nozzles takes up most of the effective working time in the process of testing and adjustment. To determine how to replace water nozzles, oilfields now generally use trial or empirical methods, and the efficiency of replacing water nozzles is low. , It takes an average of 3 to 4 days of effective working time to debug a water injection well in three inte...

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): E21B43/20E21B47/00
Inventor 黄利辉任淑霞卢德堂刘文富宴忠良林春阳曲永春宋延彰
Owner DAQING OILFIELD CO LTD
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