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Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells

A foam acidification, self-producing gas technology, applied in chemical instruments and methods, earthwork drilling, wellbore/well components, etc., can solve the problems of complex procedures and high production costs, and achieve simplified construction procedures, low construction costs, and suitable Sex-enhancing effects

Inactive Publication Date: 2012-03-14
ANTON OILFIELD SERVICES (GRP) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to solve the above-mentioned problems in the prior art, the present invention provides a self-generating agent for foam acidification of oil and water wells. The self-generating agent is used in foam acidification to solve the complex procedures in the construction of the above-mentioned foam acidification. high cost problem

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  • Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells
  • Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells
  • Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with specific examples, but not as a limitation of the present invention.

[0034] Self-generating gas agent, which generates gas when encountering acid or at the formation temperature of oil wells, and its active ingredient is ammonium carbamate.

[0035] The gas production performance of this self-generating agent is measured as follows:

[0036] The gas measuring device consists of a 200ml alkaline burette, a level bottle, a density bottle (50ml), a thermal fluid and an electric heating jacket. The density bottle holds the self-generating agent solution, and the bottle stopper is connected to the burette through the air guide tube. When the temperature of the density bottle reaches 60°C, connect it to the burette, and when the gas generation time reaches 5 minutes, close the connecting valve between the two, and read the ml of gas generated when the liquid level of the level bottle is at ...

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Abstract

The invention discloses a gas self-production agent, a use of the gas self-production agent, and a self-produced gas foam acidizing method for oil wells and water wells. The gas self-production agent can produce gas in an acid environment or at an oil well bottom temperature. An active ingredient of the gas self-production agent is ammonium carbamate. The gas self-production agent has the advantages of low requirement on gas production conditions, large gas yield, simplification of foam acidizing processes for oil wells and water wells, reduction of a foam acidizing cost, and improvement of acidizing effects.

Description

technical field [0001] The invention relates to the technical field of acidification of oil wells and water injection wells in oil fields, in particular to a self-produced gas agent and its application and a self-produced gas foam acidification method for oil and water wells. Background technique [0002] During the production process of the oil field, due to the high salinity of formation water, scaling will form in the wellbore and near-well areas of oil and water wells (oil wells and water injection wells) after long-term production. The production of oil wells is reduced, and the injection of water injection wells is difficult. In order to decontaminate the formation, the use of acidification technology is one of the measures with low cost and good effect. [0003] Acidizing of oil and water wells refers to the injection of acid liquid into the wellbore and the formation to dissolve the scale formed in the wellbore and near the wellbore. Restoring and increasing the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/52C09K8/58E21B37/00E21B43/22
Inventor 胡之力谢建军黄宝严永刚
Owner ANTON OILFIELD SERVICES (GRP) LTD
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