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Intelligent reservoir drilling completion fluid system and preparation method thereof

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

Inactive Publication Date: 2011-01-19
CHINA UNIV OF PETROLEUM (BEIJING)
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  • 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

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  • Intelligent reservoir drilling completion fluid system and preparation method thereof
  • Intelligent reservoir drilling completion fluid system and preparation method thereof
  • Intelligent reservoir drilling completion fluid system and preparation method thereof

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. ...

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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

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Application Information

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Patent Type & Authority Applications(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)
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