Environment-friendly degradable well drilling fluid anti-collapse blocking agent and method for preparing same

A technology of drilling fluid and plugging agent, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of toxicity, non-environmental protection, refractory degradation, high fluorescence level, etc., and achieves simple preparation method, good plugging performance, The effect of low fluorescence

Active Publication Date: 2018-05-15
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 environmentally friendly and degradable drilling fluid anti-slump plugging agent and a preparation method thereof, which overcomes the above-mentioned deficiencies in the

Method used

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  • Environment-friendly degradable well drilling fluid anti-collapse blocking agent and method for preparing same

Examples

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Example Embodiment

[0016] Example 1: The environmentally friendly degradable drilling fluid anti-collapse plugging agent, the raw material weight parts are 50-60 parts vegetable asphalt, 5-10 parts sodium silicate, 5-10 parts sodium hydroxide, 5 parts lignite To 10 servings, Span-80 5 to 10 servings.

Example Embodiment

[0017] Example 2: The environmentally friendly degradable drilling fluid anti-collapse plugging agent, the raw material weight parts are 50 or 60 parts of vegetable asphalt, 5 or 10 parts of sodium silicate, 5 or 10 parts of sodium hydroxide, and 5 parts of lignite Or 10 servings, Span-80 5 servings or 10 servings.

[0018] In the above examples 1 and 2, the raw material component vegetable pitch is a by-product of various vegetable oil refining processes, or it can be natural vegetable pitch, sodium silicate is an industrial-grade solid or liquid product, and sodium hydroxide is an industrial-grade solid Product, Span-80 chemical name sorbitol glyceride.

Example Embodiment

[0019] Example 3: The environmentally-friendly degradable drilling fluid anti-collapse plugging agent is obtained by the following steps: In the first step, the required amount of vegetable pitch, Span-80 and water are mixed and stirred, and heated to 90°C to 95°C. ℃, until the dissolution and mixing are uniform, stop heating to obtain material A; in the second step, mix and stir the required amount of sodium silicate, sodium hydroxide, brown coal powder and water, and react for 1 hour to 1.5 hours to obtain material B; The third step, the obtained material A and material B are uniformly mixed to obtain an environmentally friendly degradable drilling fluid anti-collapse plugging agent.

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Abstract

The invention relates to the technical field of petroleum well drilling fluid blocking agents, and discloses an environment-friendly degradable well drilling fluid anti-collapse blocking agent and a method for preparing the same. Raw materials for the environment-friendly degradable well drilling fluid anti-collapse blocking agent include vegetable pitch, sodium silicate, sodium hydroxide, ligniteand span-80. The method includes mixing and dissolving the vegetable pitch, the span-80 and water with one another to obtain materials A; carrying out mixed reaction on the sodium silicate, the sodium hydroxide, lignite powder and water to obtain materials B; uniformly mixing the materials A and the materials B with one another to obtain the environment-friendly degradable well drilling fluid anti-collapse blocking agent. The environment-friendly degradable well drilling fluid anti-collapse blocking agent and the method have the advantages that the environment-friendly degradable well drilling fluid anti-collapse blocking agent is low in fluorescence and good in blocking performance and is non-toxic, environmentally friendly and biodegradable as compared with the traditional petroleum pitch anti-collapse blocking agents; the raw materials for the environment-friendly degradable well drilling fluid anti-collapse blocking agent can come from extensive sources, and the method is simple and convenient and is free of byproducts or environmental pollution.

Description

technical field [0001] The invention relates to the technical field of oil drilling fluid plugging agent, and relates to an environment-friendly and degradable drilling fluid anti-collapse sealing agent and a preparation method thereof. Background technique [0002] In the process of oil drilling, hard and brittle mud shale formations and fractured formations are often encountered. Such formations are prone to block and collapse, resulting in complex accidents such as difficulty in drilling and tripping, and pipe sticking. The most important solution is drilling fluid Add anti-slump plugging agent. At present, the most important anti-slump and plugging agents for drilling fluids are asphalt products, including emulsified asphalt, oxidized asphalt, natural asphalt, sulfonated asphalt, etc. These products have good anti-slump and plugging effects, but have high fluorescence levels and are difficult to degrade. Exploratory wells and environmental protection applications are li...

Claims

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Application Information

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IPC IPC(8): C09K8/46C09K8/035
CPCC09K8/035C09K8/46
Inventor 宋杰刘锋李泽斌聂天宇侯艳英马建勋
Owner 新疆贝肯化学有限公司
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