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Protection anti-sloughing agent for well drilling

An anti-slump agent and drilling technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of not being able to seal cracks, prevent collapse and protect walls, not ideal comprehensive performance, and difficult to use on site. Achieve the effects of dissolving the retaining wall and sealing, good thermal storage stability, and good sealing of cracks

Inactive Publication Date: 2015-09-23
荆春芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to make the asphalt anti-slump agent have the above-mentioned comprehensive properties, some technologically developed countries in the world have developed many modified asphalt technologies, such as the most representative rubber-based SBR, thermoplastic SBS, and resin-based EVA and PE. The comprehensive performance of these materials is not ideal, and it cannot meet the comprehensive functions of treating agents in deep well drilling fluids such as good plugging of cracks, anti-collapse protection walls, and fluid loss reduction.
Domestic modified asphalt products for drilling are basically low in oil solubles, and they will agglomerate when the temperature is above 40 degrees, which makes it difficult to use on site

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1, a kind of protection and anti-slump agent for well drilling, described each material according to the following weight components: 60 parts of petroleum pitch, 3 parts of anhydrous aluminum trichloride, 8 parts of sodium hydroxide, 6 parts of potassium carbonate, 8 parts of ammonia water Parts, 6 parts of dimethyl diallyl ammonium chloride.

Embodiment 2

[0008] Embodiment 2, a kind of protection and anti-slump agent for drilling, described each material by weight composition as follows: 40 parts of petroleum pitch, 2 parts of anhydrous aluminum trichloride, 4 parts of sodium hydroxide, 4 parts of potassium carbonate, 4 parts of ammonia water Parts, 4 parts of dimethyl diallyl ammonium chloride.

Embodiment 3

[0009] Embodiment 3, a kind of protection and anti-slump agent for drilling, described each material by weight composition as follows: 50 parts of petroleum pitch, 2.5 parts of anhydrous aluminum trichloride, 6 parts of sodium hydroxide, 5 parts of potassium carbonate, 6 parts of ammonia water Parts, 5 parts of dimethyl diallyl ammonium chloride.

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PUM

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Abstract

The invention relates to the technical field of petroleum chemical engineering products, and concretely relates to a protection anti-sloughing agent for well drilling. The protection anti-sloughing agent for well drilling comprises, by weight, 40-60 parts of petroleum asphalt, 2-3 parts of anhydrous aluminum trichloride, 4-8 parts of sodium hydroxide, 4-6 parts of potassium carbonate, 4-8 parts of ammonia water and 4-6 parts of dimethyl diallyl ammonium chloride. The purpose of the invention is to provide the protection anti-sloughing agent for well drilling, with ideal performances.

Description

technical field [0001] The invention relates to the technical field of petrochemical products, in particular to a protection and anti-slump agent for well drilling. Background technique [0002] Due to the massive exploitation of oil and gas, there is less and less oil and gas in shallow layers, and oil and gas exploration is developing in depth. With the increase of oil and gas drilling depth, the well wall becomes more and more unstable, and the protection of oil and gas layers becomes more and more difficult, which seriously affects the drilling construction progress and oil and gas well production efficiency. As we all know, drilling fluid is a circulating fluid used in the drilling process, often called drilling blood. Its function is mainly to clean the bottom of the well, carry cuttings, protect the wall to plug leakage, cool and lubricate the drill bit, etc. With the increase of drilling depth, the increase of wellbore instability and the difficulty of oil and gas ...

Claims

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Application Information

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IPC IPC(8): C09K8/506C09K8/42
CPCC09K8/03C09K8/426C09K8/506
Inventor 荆春芳
Owner 荆春芳
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