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A kind of petroleum drilling aid and preparation method thereof

A technology of oil drilling and additives, which is applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of poor high temperature resistance and salt resistance, achieve good heat resistance, stable space position, and improve heat resistance The effect of salt properties

Active Publication Date: 2019-12-17
SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a petroleum drilling aid, which solves the problems of poor high temperature resistance and salt resistance of natural polymer fluid loss control agents in the prior art

Method used

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  • A kind of petroleum drilling aid and preparation method thereof
  • A kind of petroleum drilling aid and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A kind of petroleum drilling aid, is made up of the following components by mass parts: modified humic acid 90g, 4-hydroxyl-6-acetamido-2-naphthalenesulfonic acid 25g, maleic anhydride acylated chitosan 10g, 10 g of modified potassium hexatitanate whiskers with a diameter of 0.2 microns and a length of 8 microns, 1 g of nonylphenol polyoxyethylene ether, and 450 g of water;

[0037] The specific preparation method is as follows:

[0038] Step 1, prepare modified humic acid

[0039]Dissolve 1g of polyacrylic acid in 100g of ethanol to obtain solution A; add 2g of silane coupling agent KH550 to solution A, mix well to obtain solution B; add 20g of fulvic acid to solution B, and ultrasonicate at a power of 300W 30min, disperse evenly, then raise the temperature to 60°C, react at a stirring speed of 500r / min for 5h, filter after the reaction, and dry the filter residue at 60°C for 5h to obtain modified humic acid;

[0040] Step 2, preparing modified potassium hexatitanate...

Embodiment 2

[0045] A kind of petroleum drilling auxiliary agent, is made up of the following components by mass parts: modified humic acid 80g, 4-hydroxyl-6-acetamido-2-naphthalenesulfonic acid 20g, maleic anhydride acylated chitosan 12g, 5 g of modified potassium hexatitanate whiskers with a diameter of 1.0 micron and a length of 10 microns, 1.5 g of octylphenol polyoxyethylene ether, and 400 g of water;

[0046] The specific preparation method is as follows:

[0047] Step 1, prepare modified humic acid

[0048] Dissolve 1.5g of polyacrylic acid in 100g of ethanol to obtain solution A; add 2g of silane coupling agent KH550 to solution A, mix well to obtain solution B; add 20g of fulvic acid to solution B, and Ultrasound for 30 minutes to disperse evenly, then raise the temperature to 70°C, react at a stirring speed of 500r / min for 4.5h, filter after the reaction, and dry at 60°C for 5h to obtain modified humic acid;

[0049] Step 2, preparing modified potassium hexatitanate whiskers

...

Embodiment 3

[0054] A kind of petroleum drilling aid, is made up of the following components by mass parts: Modified humic acid 100g, 4-hydroxyl-6-acetamido-2-naphthalenesulfonic acid 30g, maleic anhydride acylated chitosan 15g, 8 g of modified potassium hexatitanate whiskers with a diameter of 0.6 microns and a length of 12 microns, 2 g of nonylphenol polyoxyethylene ether, and 500 g of water;

[0055] The specific preparation method is as follows:

[0056] Step 1, prepare modified humic acid

[0057] Dissolve 2g of polyacrylic acid in 100g of ethanol to obtain solution A; add 2g of silane coupling agent KH550 to solution A and mix well to obtain solution B; add 20g of fulvic acid to solution B, Ultrasound for 30 minutes to disperse evenly, then raise the temperature to 80°C, react for 4 hours under stirring conditions, filter after the reaction, and dry the filter residue at 60°C for 5 hours to obtain modified humic acid;

[0058] Step 2, preparing modified potassium hexatitanate whisk...

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Abstract

The invention discloses a petroleum drilling auxiliary, the petroleum drilling auxiliary comprises the following components by mass: 80-100 parts of modified humic acid, 20-30 parts of 4-hydroxyl-6-acetamido-2-naphthalene sulfonic acid, 10-15 parts of maleic anhydride acylated chitosan, 5-10 parts of modified potassium hexatitanate whisker, 1-2 parts of a surfactant, and 400-500 parts of water. The invention further provides a preparation method of the petroleum drilling auxiliary. The modified humic acid and the 4-hydroxyl-6-acetamido-2-naphthalene sulfonic acid in the formula are matched inuse and produce a synergistic interaction, the effects of high temperature resistance and salt resistance of a filtrate reducer are improved, and the particularly excellent high temperature resistanceof the modified potassium hexatitanate whisker reduces the use level of the filtrate reducer in a drilling fluid. The petroleum drilling auxiliary has the functions of resisting the high temperatureof 260 DEG C and resisting saturated salt water, further effectively reduces the filter loss of the drilling fluid, and has a broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling additives, and in particular relates to a petroleum drilling additive and a preparation method thereof. Background technique [0002] Filtrate reducer is one of the most important additives in petroleum drilling, it plays an important role in maintaining the stability of drilling fluid performance and safe and efficient drilling. The process of free water in the drilling fluid penetrating into the formation under the action of pressure difference is called fluid loss. Excessive fluid loss often brings many adverse consequences to the drilling work. For example, the mud cake produced by high fluid loss will adhere to the On the well wall, the hydraulic diameter of the annular space between the wellbore and the drilling tool is reduced, and pipe sticking accidents are prone to occur, and the high swabbing pressure used to solve the stuck pipe will induce blowout, lost circulation and well...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03
Inventor 郝琦李春霞薛迪
Owner SHAANXI YANCHANG PETROLEUM GRP
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