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Imitation oil-based drilling fluid strong inhibitor for drilling fluid and preparation method thereof

A drilling fluid, oil-like technology, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of environmental pollution, high cost, poor inhibition effect of drilling fluid, etc., and achieve lower production cost and strong inhibition effect. , cheap effect

Active Publication Date: 2016-08-10
新疆贝肯化学有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides an imitation oil-based drilling fluid strong inhibitor for drilling fluid and a preparation method thereof, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problems of high cost of oil-based drilling fluid, serious environmental pollution and difficulties in wellhead operation safety. Control; single inorganic salt or organic salt as the inhibitory core drilling fluid has poor inhibitory effect and high cost

Method used

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  • Imitation oil-based drilling fluid strong inhibitor for drilling fluid and preparation method thereof

Examples

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Effect test

Embodiment 1

[0017] Example 1, the drilling fluid uses an imitation oil-based drilling fluid strong inhibitor, and the raw materials are 20 to 30 parts of starch, 30 to 38 parts of aldehydes, and 5 to 10 parts of potassium guaiacol sulfonate by weight. , 1 to 5 parts of acid initiator, 25 to 35 parts of water.

Embodiment 2

[0018] Example 2, the drilling fluid uses a strong inhibitor of imitation oil-based drilling fluid, and the raw materials are 20 or 30 parts of starch, 30 or 38 parts of aldehydes, and 5 or 10 parts of potassium guaiacolsulfonate by weight. , 1 or 5 parts of acid initiator, 25 or 35 parts of water.

Embodiment 3

[0019] Example 3, the drilling fluid is obtained by the following preparation method with imitation oil-based drilling fluid strong inhibitor, the required amount of starch, aldehydes, potassium guaiacol sulfonate and water are added to the reactor and mixed evenly, Use an alkalinity regulator to adjust the pH to 6 to 8.5, then add the required amount of acidic initiator and mix well, heat the reactor until the material temperature in the reactor is 60°C to 100°C, and reflux for 16 hours to 24 hours to obtain Drilling fluid with imitation oil-based drilling fluid strong inhibitor. The imitation oil-based drilling fluid strong inhibitor for the drilling fluid of the present invention is a colloid, and the drilling fluid of the present invention can be further processed to obtain a paste; or the imitation oil-based drilling fluid for the drilling fluid of the present invention The dry treatment of the liquid strength inhibitor yields a powder with a water content of less than 10...

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Abstract

The invention relates to the technical field of drilling fluid inhibitors and preparation thereof, and discloses an artificial oil-based drilling fluid strong inhibitor for drilling fluid and a preparation method of the inhibitor. The artificial oil-based drilling fluid strong inhibitor for the drilling fluid is composed of the following raw materials in parts by weight: 20-30 parts of starch, 30-38 parts of aldehydes, 5-10 parts of guaiacol sulfonic acid potassium, 1-5 parts of acid initiator and 25-35 parts of water. In comparison with the domestic frequently-used inhibitor for the drilling fluid, the artificial oil-based drilling fluid strong inhibitor for the drilling fluid has stronger inhibition effect; the starch used as a raw material in the inhibitor has wide source and cheap price, thus, production cost is lowered; the artificial oil-based drilling fluid strong inhibitor for the drilling fluid is nontoxic and easily biodegradable, and cannot pollute the environment; the artificial oil-based drilling fluid strong inhibitor for the drilling fluid is free of useless negative ions or negative ion groups, or the negative ions or negative ion groups with adverse side effects, and cannot cause damage to the drilling fluid or other well drilling works.

Description

technical field [0001] The invention relates to the technical field of an inhibitor for drilling fluid and its preparation, and relates to an oil-based drilling fluid strong inhibitor for drilling fluid and a preparation method thereof. Background technique [0002] With the increasing consumption of oil and gas in various countries in the world, and the decline of oil and gas reserves in the world. Oil drilling and production work is gradually shifting from the exploitation of shallow oil and gas reservoirs to deep oil layers and difficult reservoirs. The situation of drilling complex formations has risen sharply, the difficulty of construction has gradually increased, and the cost of drilling construction has increased significantly. Wellbore instability in shale well sections is still a difficult problem that has not been completely solved by drilling technology in all countries in the world. If the problem of wellbore instability in the shale well section cannot be well...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
CPCC09K8/035
Inventor 张川陈剑德李明高磊宋元辉赵海存赵建白黎年张祖海白杨
Owner 新疆贝肯化学有限公司