Method for testing imbibing capability of leakage-proof plugging agent while drilling

A testing method and technology of plugging agent, applied in the direction of using material absorption and weighing, can solve the problems of delaying drilling time, consuming a lot of time, economic loss, etc., and achieving the effects of reducing testing costs, simple testing steps, and high testing accuracy.

Inactive Publication Date: 2013-03-27
莫俊龙
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The existing plugging methods have their own advantages and disadvantages, but in general they all delay the drilling time more or less and reduce the drilling efficiency. For example, the static plugging method needs to stop drilling. Leakage material changes the performance of the drilling fluid, and it is necessary to readjust the formula of the drilling fluid, etc., which will consume a lot of time, bring great inconvenience to drilling, and lead to large economic losses

Method used

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Embodiment

[0023] The invention relates to a method for testing the liquid absorption capacity of an anti-leakage plugging agent while drilling, comprising the following steps:

[0024] (a) Purify and dry the anti-leakage plugging agent while drilling for future use;

[0025] (b) called W 1 The dry anti-leakage plugging agent while drilling of gram is put in the reaction vessel;

[0026] (c) add the liquid to be imbibed;

[0027] (d) After the absorption is saturated, weigh the water-absorbing gel weight W 2 ;

[0028] (e) Calculate the water absorption rate of the anti-leakage plugging agent while drilling by the following formula:

[0029] Water absorption = (W 2 -W 1 ) / W 1 .

[0030] In the step (a), the anti-leakage plugging agent A is purified and dried with ethanol.

[0031] In the step (b), the reaction vessel is a beaker.

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Abstract

The invention discloses a method for testing imbibing capability of a leakage-proof plugging agent while drilling. The method comprises the steps of (a) purifying and drying the leakage-proof plugging agent while drilling for future use; (b) weighing W1 g of the dried leakage-proof plugging agent while drilling and putting the dried leakage-proof plugging agent into a reaction container; (c) adding a liquid to be imbibed; (d) weighing an imbibed gel weight W2 after imbibing is saturated; and (e) calculating an imbibing rate of the leakage-proof plugging agent while drilling through a formula. With the adoption of the method, the imbibing capability of the leakage-proof plugging agent while drilling can be rapidly tested; the test precision is high, and the test steps are simple; and the test cost is greatly reduced.

Description

technical field [0001] The invention relates to a method for testing the liquid absorption capacity of an anti-leakage plugging agent while drilling. Background technique [0002] Lost circulation refers to the process of working fluid (including drilling fluid, cement slurry, completion fluid and other working fluids) in the process of various downhole operations such as drilling, cementing, testing or workover in oil and gas exploration and development. It is a kind of downhole complex situation that is lost into the formation under the action of drilling fluid, which is one of the most common and common technical problems in drilling engineering. The reason why it is called an underground complex situation is that most of its occurrences are not caused by human beings and are not transferred by human will. Of course, this statement is not accurate enough. If you encounter a lost channel that can produce lost circulation, but take corresponding effective measures, then it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02
Inventor 莫俊龙
Owner 莫俊龙
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