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

An intelligent reservoir drilling and completion fluid system and its preparation method

A completion fluid and reservoir technology, applied in the field of oil and gas field drilling, can solve the problems of permeability recovery value and initial flow pressure increase, poor reservoir protection effect, etc., achieve good economic and social benefits, and improve reservoir protection effect , strong applicability

Inactive Publication Date: 2015-11-25
CHINA UNIV OF PETROLEUM (BEIJING)
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology has the following problems: 1) After adding calcium carbonate, if no plugging measures are taken, the recovery value of permeability and initial flow pressure need to be further improved
2) The use of calcium carbonate temporary plugging technology generally requires acidification or perforation to remove plugging to ensure good reservoir protection effect; 3) In some well completion methods such as screen completion, and in wells where mud cake cannot be effectively removed, The reservoir protection effect of this operation method is not good

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
  • An intelligent reservoir drilling and completion fluid system and its preparation method
  • An intelligent reservoir drilling and completion fluid system and its preparation method
  • An intelligent reservoir drilling and completion fluid system and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Take 500mL of water and add it to the mixing cup, turn on the stirrer and stir;

[0040] (2) Add 0.5wt% coating agent BBJ-3 and continue to stir to fully dissolve the coating agent;

[0041] (3) Add 1.0wt% viscosifier VSF-2, continue to stir, and allow it to fully dissolve;

[0042] (4) Add 1.5wt% anti-temperature fluid loss reducer KWJLS-1, continue to stir to make the dissolution even;

[0043] (5) Add 2.0wt% anti-temperature and anti-slump agent FTJ-3, and continue stirring;

[0044] (6) Add 3.0wt% reservoir protection agent CCBHJ-2 and continue stirring;

[0045] (7) Add 2wt% novel modified calcium carbonate XXBHJ-2, continue to stir

[0046] (8) After the above drilling and completion fluid additives are uniformly dissolved, the final product intelligent reservoir drilling and completion fluid system is obtained.

Embodiment 2

[0048] (1) Take 500mL of water and add it to the mixing cup, turn on the stirrer and stir;

[0049] (2) Add 1.0wt% coating agent BBJ-3 and continue stirring to fully dissolve the coating agent;

[0050] (3) Add 1.5wt% viscosifier VSF-2, continue to stir, and allow it to fully dissolve;

[0051] (4) Add 2.0wt% anti-temperature fluid loss reducer KWJLS-1, and continue to stir to make the dissolution even;

[0052] (5) Add 2.5wt% anti-temperature and anti-slump agent FTJ-3, and continue stirring;

[0053] (6) Add 4.0wt% reservoir protection agent CCBHJ-2 and continue stirring;

[0054] (7) Add 3wt% novel modified calcium carbonate XXBHJ-2, continue to stir

[0055] (8) After the above drilling and completion fluid additives are uniformly dissolved, the final product intelligent reservoir drilling and completion fluid system is obtained.

Embodiment 3

[0057] (1) Take 500mL of water and add it to the mixing cup, turn on the stirrer and stir;

[0058] (2) Add 1.0wt% coating agent BBJ-3 and continue stirring to fully dissolve the coating agent;

[0059] (3) Add 2.0wt% viscosifier VSF-2, continue to stir, and allow it to fully dissolve;

[0060] (4) Add 2.5wt% anti-temperature fluid loss reducer KWJLS-1, continue to stir to make the dissolution even;

[0061] (5) Add 3.0wt% anti-temperature and anti-slump agent FTJ-3, and continue stirring;

[0062] (6) Add 4.0wt% reservoir protection agent CCBHJ-2 and continue stirring;

[0063] (7) Add 4wt% novel modified calcium carbonate XXBHJ-2, continue to stir

[0064] (8) After the above drilling and completion fluid additives are uniformly dissolved, the final product intelligent reservoir drilling and completion fluid system is obtained.

[0065] The basis of the mass percent of each component in Examples 1-3 is water.

[0066] Embodiment performance evaluation method

[0067] 1. ...

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 relates to an intelligent reservoir drilling completion fluid system. The intelligent reservoir drilling completion fluid system has strong practicability, and can be applied to different water-based drilling completion fluid systems such as drilling completion fluid systems of polymer drilling completion fluid, polysulfide drilling completion fluid, organic salt drilling completion fluid, saturated brine drilling completion fluid and the like; the system can effectively reduce the initial flow pressure of a reservoir, improve the permeability recovery value and remarkably improve the protective effect of the reservoir; and the system is simple to prepare, does not affect the normal drilling construction, can improve the protective effect of the reservoir, can effectively eliminate the time and cost for underground mud cake removing operation, and is beneficial to gaining good economic and social benefits.

Description

technical field [0001] The invention relates to an intelligent reservoir drilling and completion fluid system and a preparation method thereof, which are applied in the field of oil and gas field drilling in the petroleum industry. Background technique [0002] With the continuous advancement of drilling technology, deep wells and offshore drilling have gradually become an important strategic replacement zone for increasing reserves and production. During the development of such wells, the drilling cost is very high, and it is necessary to significantly improve the reservoir protection effect to ensure that the investment is realistic. value. Reservoir protection technology has always been a hot issue at home and abroad. Reservoir damage has a cumulative superimposed effect during the production and construction of oil and gas wells. Drilling and completion fluid is the first working fluid to open the reservoir, and its performance plays a very important role in reservoir p...

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): C09K8/12C09K8/03
Inventor 李志勇鄢捷年蒋官澄王利国谢水祥付英军臧伟伟杨帅伟
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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