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Organic soil and preparation method thereof

An organic and bentonite technology, applied in the field of oil-based drilling fluid, can solve the problems of low gelling rate, achieve good high temperature stability, increase viscosity and shear force, and be easy to produce

Active Publication Date: 2013-05-15
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the deficiency that the existing organic soil has a low gelation rate in white oil and gas-to-oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Pour 300ml of water into a stainless steel cup, then add 30g of bentonite and 2.1g of sodium carbonate and stir for 30min, let stand for 20h, then add 12g of alkyltrimethylammonium bromide and 16g of methyltrialkylchloride under stirring conditions Stir the ammonium chloride N-263 for 2 hours, then pour all the stirred liquid into the aging tank of the roller furnace, and tighten the upper cover and the valve stem. After the aging tank was rolled in a roller furnace at 90°C for 6 hours, it was taken out and cooled to room temperature, the upper cover was opened and the liquid in it was poured into a porcelain plate, dried and pulverized to obtain an organic soil sample. After testing, add 3% of the sample to the white oil and leave it for 1 hour after high-speed stirring (11000 rpm), and the colloidal rate is 99.5%.

Embodiment 2

[0013] Pour 300ml of water into a stainless steel cup, then add 30g of bentonite and 2.1g of sodium carbonate and stir for 30min, let stand for 20h, then add 6g of alkyltrimethylammonium bromide and 8g of methyltrialkylchloride under stirring conditions Stir ammonium chloride 7402 for 2 hours, then pour all the stirred liquid into the aging tank of the roller furnace, and tighten the upper cover and valve stem. After the aging tank was rolled in a roller furnace at 110°C for 6 hours, it was taken out and cooled to room temperature, the upper cover was opened and the liquid in it was poured into a porcelain plate, dried and pulverized to obtain an organic soil sample. After testing, add 3% of the sample to the white oil and leave it for 1 hour after high-speed stirring (11000 rpm), and the colloidal rate is 99.8%.

Embodiment 3

[0015] Pour 300ml of water into a stainless steel cup, then add 30g of bentonite and 2.1g of sodium carbonate and stir for 30min, let stand for 20h, then add 6g of alkyltrimethylammonium bromide and 8g of methyltrialkylchloride under stirring conditions Stir the ammonium chloride N-263 for 2 hours, then pour all the stirred liquid into the aging tank of the roller furnace, and tighten the upper cover and the valve stem. After the aging tank was rolled in a roller furnace at 180°C for 6 hours, it was taken out and cooled to room temperature, the upper cover was opened and the liquid in it was poured into a porcelain plate, dried and pulverized to obtain an organic soil sample. After testing, add 3% of the sample to the white oil and leave it for 1 hour after high-speed stirring (11000 rpm), and the colloidal rate is 99.5%.

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PUM

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Abstract

The invention relates to oil-based drilling fluids used in oil field well drilling, particularly relates to organic soil and a preparation method thereof. The organic soil comprises the following components: water, bentonite, sodium carbonate, alkyl trimethyl ammonium bromide and methyl-trialkylammonium chloride N-263 at a mass ratio of 100g:10g:0.7g:(0.2-8)g:(0.1-9)g. The preparation method comprises the following steps: collecting the components of the organic soil according to the above mass ratio; hydrating and dispersing bentonite and sodium carbonate in water to form clay colloid, adding alkyl trimethyl ammonium bromide, adding methyl-trialkylammonium chloride N-263 or methyl-trialkylammonium chloride 7402, reacting at 10-200 DEG C for 2-7 hours; drying, and pulverizing to obtain organic soil. The organic soil provided by the invention has high viscosity in white oil, gas oil and diesel oil, and the colloid fraction is up to over 99%.

Description

Technical field: [0001] The invention relates to an oil-based drilling fluid used in oil field drilling, in particular to an organic soil and a preparation method thereof. Background technique: [0002] Oil-based drilling fluid has the characteristics of strong inhibition, high temperature resistance, strong anti-fouling, good lubricity and good corrosion resistance, which protects the oil layer extremely well, and has the characteristics of recyclability and repeated use. At present, foreign oil-based drilling fluids have become an important means used in high-temperature deep wells, high-inclination directional wells, horizontal wells and various complex well operations. [0003] As the most basic lipophilic colloid in oil-based drilling fluid, organic soil can increase the viscosity and shear force of drilling fluid in oil-based drilling fluid, and can reduce the filtration loss of oil-based drilling fluid. It is an oil-based drilling fluid. The most important tackifier....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/035
Inventor 张振华尹志亮李燕
Owner BC P INC CHINA NAT PETROLEUM CORP
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