CN107541194B

CN107541194B - Plant white clay oil drilling fluid lubricant and preparation method thereof

Info

Publication number: CN107541194B
Application number: CN201610476556.7A
Authority: CN
Inventors: 逯贵广; 袁俊秀; 封心领; 徐冬梅
Original assignee: China Petroleum and Chemical Corp; China Petrochemical Corp
Current assignee: China Petroleum and Chemical Corp; Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
Priority date: 2016-06-27
Filing date: 2016-06-27
Publication date: 2020-04-14
Anticipated expiration: 2036-06-27
Also published as: CN107541194A

Abstract

The invention discloses a vegetable white clay oil drilling fluid lubricant and a preparation method thereof, relating to the technical field of oil-gas well engineering and being characterized in that the lubricant comprises vegetable white clay oil, fatty acid ester and surfactant; wherein the mass percentages of the components are as follows: 60% -80% of plant carclazyte oil, 10% -30% of fatty acid ester and 5% -10% of surfactant. The lubricant has the advantages of low fluorescence level, good lubricating property, cheap and easily-obtained raw materials and the like.

Description

Plant white clay oil drilling fluid lubricant and preparation method thereof

Technical Field

The invention belongs to the technical field of oil-gas well engineering, and particularly relates to a plant carclazyte oil drilling fluid lubricant and a preparation method thereof.

Background

With the increasing of horizontal wells, directional wells and highly deviated wells, a large amount of drilling fluid lubricant is often needed in the oil drilling process to reduce the friction between the well wall and the drilling tool and between the drilling tool and the casing, reduce the complex conditions in the well and improve the drilling speed. The existing general lubricant has fluorescence, so that the general lubricant has great influence on geological logging in the using process of exploratory wells and some key wells, and seriously influences logging workers to find a new oil-gas layer in logging. Therefore, the development of the lubricant for the low-fluorescence drilling fluid has important practical significance.

The argil oil is recovered from waste argil for decoloring edible oil. Based on the difference of the oil raw material and the decoloring process, the content of the oil in the waste argil is 20-30%. For many years, most oil plants adopt a burying mode to treat the oil-containing waste argil, so that the oil-containing waste argil is not developed and utilized fully and reasonably, and resource waste and environmental pollution are caused. The waste argil is further treated to obtain the plant argil oil, and the argil oil is used as a lubricant of the drilling fluid, so that waste materials can be changed into valuable things, and the problems of resource waste and environmental pollution are solved.

Disclosure of Invention

The invention aims to provide a vegetable white clay oil drilling fluid lubricant and a preparation method thereof.

The invention achieves the above object by the following technical scheme.

The invention provides a vegetable white clay oil drilling fluid lubricant, which comprises the following components: vegetable white clay oil, surfactant, fatty acid ester; wherein the weight percentages of the components are as follows:

plant white clay oil: 60-80%;

fatty acid ester: 10-30%;

surfactant (b): 5 to 10 percent.

The plant white clay oil in the solution of the invention is one or more of corn white clay oil, soybean white clay oil, rice bran white clay oil and palm white clay oil.

The fatty acid ester in the solution of the invention is one or a mixture of more than one of glycerin fatty acid ester, propylene glycol monooleate, propylene glycol monolaurate, isooctanol fatty acid ester, stearic acid, triethanolamine oleate and methyl oleate.

The surfactant in the solution of the invention is one or a mixture of more than one of SP-20, SP-80, TW-20, TW-80, OP-10 or NP-10.

The preparation method of the lubricant comprises the following implementation steps:

the raw materials are added into a reaction kettle according to the proportion, heated to 50-80 ℃, and stirred at a high speed for 0.5-1 h to obtain the vegetable carclazyte oil drilling fluid lubricant.

The invention has the advantages and characteristics that:

(1) the raw materials adopted by the invention are cheap and easy to obtain, and the problem of environmental pollution caused by waste argil can be effectively solved;

(2) the lubricant disclosed by the invention is low in fluorescence level and does not influence geological logging.

Detailed Description

In order to better understand the present invention, the following examples are further provided to illustrate the content of the present invention, but the content of the present invention is not limited to the following examples.

Example 1

Sequentially adding 30 parts of corn white clay oil, 40 parts of soybean white clay oil, 20 parts of glycerin fatty acid ester and 10 parts of SP-80 into a reaction kettle, heating to 60 ℃, stirring at a high speed for 0.5h, and cooling to obtain the plant white clay oil drilling fluid lubricant 1^#。

Example 2

Adding 70 parts of soybean argil oil, 20 parts of triethanolamine oleate and 10 parts of TW-80 into a reaction kettle in sequence, heating to 60 ℃, stirring at a high speed for 0.5h, and cooling to obtain the vegetable argil oil drilling fluid lubricant 2^#。

Example 3

Adding 40 parts of corn white clay oil, 40 parts of palm white clay oil, 10 parts of stearic acid and 10 parts of SP-20 into a reaction kettle in sequence, heating to 60 ℃, stirring at a high speed for 0.5h, and cooling to obtain the plant white clay oil drilling fluid lubricant 3^#。

Example 4

Sequentially adding 20 parts of corn white clay oil, 30 parts of soybean white clay oil, 20 parts of palm white clay oil, 10 parts of glycerin fatty acid ester, 10 parts of methyl oleate and 10 parts of SP-80 into a reaction kettle, heating to 60 ℃, stirring at a high speed for 0.5h, and cooling to obtain the vegetable white clay oil drilling fluid lubricant 4^#。

Example 5

Sequentially adding 40 parts of corn white clay oil, 40 parts of soybean white clay oil, 10 parts of glycerin fatty acid ester and 10 parts of SP-80 into a reaction kettle, heating to 60 ℃, stirring at a high speed for 0.5h, and cooling to obtain the plant white clay oil drilling fluid lubricant 5^#。

Example 6

Sequentially adding 30 parts of rice bran argil oil, 40 parts of soybean argil oil, 10 parts of glycerin fatty acid ester, 10 parts of propylene glycol monooleate and 10 parts of TW-20 into a reaction kettle, heating to 60 ℃, stirring at a high speed for 0.5h, and cooling to obtain the vegetable argil oil drilling fluid lubricant 6^#。

Example 7

Sequentially adding 30 parts of corn white clay oil, 30 parts of soybean white clay oil, 10 parts of glycerin fatty acid ester, 10 parts of methyl oleate, 10 parts of isooctanol fatty acid ester and 10 parts of SP-80 into a reaction kettle, heating to 60 ℃, stirring at high speed for 0.5h, and cooling to obtain the plant white clay oil drilling fluid lubricant 7^#。

Example 8

Sequentially adding 30 parts of corn white clay oil, 30 parts of soybean white clay oil, 10 parts of glycerin fatty acid ester, 10 parts of methyl oleate, 10 parts of isooctanol fatty acid ester, 8 parts of SP-80 and 2 parts of OP-10 into a reaction kettle, and heatingStirring at high speed for 0.5h at the temperature of 60 ℃, and cooling to obtain the vegetable white clay oil drilling fluid lubricant 8^#。

Example 9

The lubrication of the plant white clay oil drilling fluid 1 is determined according to the technical requirement of the liquid lubricant for Q-SY 1088-^#The fluorescence level of (2) is grade 1, and no influence is caused on geological logging.

2.5g Na was added to 1L deionized water₂CO₃Slowly adding 50g of the sodium soil for the drilling fluid under stirring, stirring at a high speed for 20min, and maintaining in a closed container for 24h to obtain the 5% fresh water base slurry. Taking 300mL of prepared 5% fresh water base slurry, adding 1% of lubricant, and stirring for 5min to obtain test slurry.

5 percent of base slurry and added lubricant 1 are tested by adopting Fann21200 extreme pressure lubrication instrument^#The lubrication coefficient of the sample was calculated, and the reduction rate of the lubrication coefficient was calculated, 1^#The reduction rate of the lubrication coefficient of the lubricant was 86.3%.

Example 10

The lubrication of the plant white clay oil drilling fluid is determined according to the technical requirement of Q-SY 1088 and 2007 liquid lubricant for drilling fluid^#The fluorescence level of (2) is 1.5 level, and has no influence on geological logging.

5 percent of base slurry and added lubricant 3 are tested by adopting Fann21200 extreme pressure lubrication instrument^#The lubrication coefficient of the sample, and the reduction rate of the lubrication coefficient, 3^#The reduction rate of the lubrication coefficient of the lubricant was 92.3%.

Example 11

The lubrication of the plant white clay oil drilling fluid 5 is determined according to the technical requirement of Q-SY 1088 and 2007 liquid lubricant for drilling fluid^#The fluorescence level of (2) is grade 1, and no influence is caused on geological logging.

2.5g of Na were added to 1L of deionized water₂CO₃Slowly adding while stirring50g of sodium soil for drilling fluid is added, stirred at a high speed for 20min and maintained in a closed container for 24h, and then 5 percent fresh water base slurry is obtained. Taking 300mL of prepared 5% fresh water base slurry, adding 1% of lubricant, and stirring for 5min to obtain test slurry.

5 percent of base slurry and added lubricant 5 are tested by adopting Fann21200 extreme pressure lubrication instrument^#The lubrication coefficient of the sample was calculated, and the reduction rate of the lubrication coefficient was calculated, 5^#The reduction rate of the lubrication coefficient of the lubricant was 91.5%.

Claims

1. A plant white clay oil drilling fluid lubricant is characterized by comprising the following components: vegetable white clay oil, fatty acid ester, and surfactant; wherein the mass percentages of the components are as follows: 60% -80% of plant carclazyte oil, 10% -30% of fatty acid ester and 5% -10% of surfactant.

2. The plant clay oil drilling fluid lubricant according to claim 1, wherein the plant clay oil is one or more of corn clay oil, soybean clay oil, rice bran clay oil and palm clay oil.

3. The vegetable clay oil drilling fluid lubricant as set forth in claim 1, wherein the fatty acid ester is one or more of glycerin fatty acid ester, propylene glycol monooleate, propylene glycol monolaurate, isooctanol fatty acid ester, triethanolamine oleate, and methyl oleate.

4. The vegetable clay oil drilling fluid lubricant of claim 1, wherein the surfactant is one or more of SP-20, SP-80, TW-20, TW-80, OP-10, or NP-10.

5. The preparation method of the plant carclazyte oil drilling fluid lubricant according to any one of claims 1 to 4, characterized in that the raw materials are respectively added into a reaction kettle according to the mixture ratio, heated to 50-80 ℃, and stirred at high speed for 0.5-1 h to obtain the plant carclazyte oil drilling fluid lubricant.