CN105482786B - A kind of drilling fluid extreme pressure antiwear agent - Google Patents

A kind of drilling fluid extreme pressure antiwear agent Download PDF

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Publication number
CN105482786B
CN105482786B CN201410474247.7A CN201410474247A CN105482786B CN 105482786 B CN105482786 B CN 105482786B CN 201410474247 A CN201410474247 A CN 201410474247A CN 105482786 B CN105482786 B CN 105482786B
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China
Prior art keywords
extreme pressure
pressure antiwear
drilling fluid
antiwear agent
well
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CN105482786A (en
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徐冬梅
袁俊秀
封心领
逯贵广
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China Petroleum and Chemical Corp
Research Institute of Sinopec Nanjing Chemical Industry Co Ltd
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China Petroleum and Chemical Corp
Research Institute of Nanjing Chemical Industry Group Co Ltd
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Abstract

The invention discloses a kind of drilling fluid extreme pressure antiwear agents.It is characterized in that the anti-friction agent is grouped as by two kinds of groups, base oil 55% -70%, surfactant 30% -45%, each component is by mass percentage.The extreme pressure antiwear agent that the present invention announces has good temperature resistance, wear resistence and lubricity, can be used for the drilling well of deep-well, extended reach well and horizontal well.

Description

A kind of drilling fluid extreme pressure antiwear agent
Technical field
The invention belongs to oil drilling field of engineering technology, are related to a kind of drilling fluid extreme pressure antiwear agent.
Background technology
As country's probing exploitation dynamics is continuously increased, extended reach well, high angle hole, horizontal well and dog-leg severity are larger Deep-well is more and more, and drilling well difficulty is also increasing, in drilling process, the problem of casing is seriously worn usually occurs.Thus After the problems such as casing abrasion perforation, casing crush resistance strength and the internal pressure strength of induction are substantially reduced seriously affects oil/gas well Continuous well completing test operation, reduces oil/gas well service life, oil/gas well part well section or whole mouth oil/gas well report is also resulted in when serious It is useless.Existing lubricant has vegetable oil, mineral oils;Paraffin, ethylene glycol polyethylene glycols etc..There are a weights for these lubricants The defect wanted:It can only work at low load, in top load condition(High temperature, high pressure, high density, high drilling speed)Under it is wear-resistant and profit Slip can it is undesirable, cannot meet deep-well, ultra-deep well drilling, extended reach well drilling well needs.As oil field at home exploitation is gradual It is expanded to deeper formation, marine bed and unconventional stratum field, the difficulty of drilling well is increasing, horizontal well, extended reach well And ultradeep well is more and more, adherency bit freezing phenomenon happens occasionally, to the lubricity of drilling fluid, it is anti-friction characteristics require higher and higher, compel Be essential to develop can abrasion resistance it is good while having the extreme-pressure lubricant of fine lubrication function again.
Invention content
The present invention provides a kind of drilling fluid extreme pressure antiwear agents.The extreme pressure for having both excellent anti-friction performance and greasy property subtracts Rub agent, solves to reduce the abrasion of drilling tool to drilling fluid lubricating and anti-friction characteristics requirement in Complex formation drilling, improve drilling fluid The lubricity of system improves bit speed, reduces drilling cost.
What the purpose of the present invention was achieved through the following technical solutions:A kind of drilling fluid extreme pressure antiwear agent is provided, by two Kind group is grouped as, base oil and surfactant.
The extreme pressure antiwear agent includes following two components, base oil 55%-70%, surfactant 30%-45%, by quality Percentages.
The base oil is the mixed of one or more of diesel oil, biodiesel, white oil, vegetable oil, animal oil, mineral oil Close object.
The surfactant be laurylamide boric acid diethanol amine ester, N- dodecyl boric acid diethanol amine ester, The mixture of one or more of fatty glyceride, fatty acid sorbitan, polysorbate.
Extreme pressure antiwear agent disclosed in this invention, preparation method is simple, and raw material is easy to get, and cost is relatively low, has good Temperature resistance, wear resistence, lubricity and can bearing.
Specific implementation mode
The technique for illustrating the present invention with reference to embodiment.
Embodiment 1
60g mineral oil, 20g laurylamide boric acid diethanol amine ester, 20g aliphatic acid sorb esters are weighed in three mouthfuls of burnings In bottle, keep liquid agitation uniform with 800rpm stirrings 40min on mechanical agitator, you can to obtain extreme pressure antiwear agent.
Embodiment 2
30g white oils, 35g biodiesel, 20g fatty glycerides, 15g polysorbates are weighed in three-necked flask, in machine Keep liquid agitation uniform with 800rpm stirrings 40min on tool blender, you can to obtain extreme pressure antiwear agent.
Embodiment 3
45g diesel oil, 25g vegetable oil, 30g laurylamide boric acid diethanol amine esters are weighed in three-necked flask, Keep liquid agitation uniform with 800rpm stirrings 40min on mechanical agitator, you can to obtain extreme pressure antiwear agent.
Embodiment 4
55g vegetable oil, 45g laurylamide boric acid diethanol amine esters are weighed in three-necked flask, in mechanical agitator On with 800rpm stirring 40min keep liquid agitation uniform, you can obtain extreme pressure antiwear agent.
Embodiment 5
35g diesel oil, 25g biodiesel, 10g white oils, 30g fatty glycerides are weighed in three-necked flask, in machinery Keep liquid agitation uniform with 800rpm stirrings 40min on blender, you can to obtain extreme pressure antiwear agent.
Embodiment 6
According to the anti-friction performance of product in method test above example specified in 1170 060-2014 of standard Q/SH. Anti-friction performance is characterized with vector reduced rate is rubbed.Concrete operation step is as follows:
1) base slurry is prepared
Base slurry formula:It is swollen that 1.4g natrium carbonicum calcinatums, 40.0g drilling fluid experiment sodium are sequentially added in 1000mL distilled water Profit is native, after high-speed stirred 20min, should stop in whipping process twice, the bentonite being adhered on stirring cup is scraped with glass bar, Room temperature curing in airtight condition is for 24 hours.
2) it is 1 to choose experiment two numbers of grinding column#With 2#It is spare, by two experiment grinding columns be put into fill boiling range be 60 DEG C~ In the vessel of 90 DEG C of petroleum ethers, experiment grinding column surface contaminants are removed with absorbent cotton, and continuous wash is twice.It is handled through absorbent cotton Grinding column is tested, with soaked in absolute ethyl alcohol about 5min, experiment grinding column is taken out, is dried with gauze, dried up with cold wind(Examination after processing The unavailable hand of grinding column is tested directly to touch, in order to avoid pollution)It wraps, is put into drier dry 30min, weighs and (be accurate to 0.0001g)Obtain M01And M02
3) 1 handled well#Experiment grinding column installs, and takes base slurry 200mL to pour into testing cassete with graduated cylinder, makes test fluid Submerge bull ring lower edge.Starting to add counterweight after No Load Start motor, every counterweight increases time interval 5s, and gently transfers, when Counterbalance mass starts timing after being added to 2kg, and testing machine is closed after 3min.By 1 after measurement#Grinding column is tested by the method in b step It handles and weighs and (be accurate to 0.0001g)Obtain M1
4) it takes base to starch 300mL, takes 200mL to pour into testing cassete after anti-friction composition sample 3.0g, high-speed stirred 5min is added, 2 handled well#Experiment grinding column installs, and is tested by the method in step C, by 2 after measurement#Grinding column is tested by b step Method, which is handled and weighed, (is accurate to 0.0001g)Obtain M2
Vector rub by formula(1)It calculates:
(1)
In formula:
--- rub vector reduced rate, %;
, --- grinding column quality, g before experiment;
--- grinding column quality after being tested in base slurry, g;
--- grinding column quality after anti-friction agent experiment, g is added in base slurry.
Test result is shown in Table 1:
Table 1 rubs vector reduced rate test result
Sample ID Grind vector reduced rate
Embodiment 1 92.97%
Embodiment 2 99.73%
Embodiment 3 96.87%
Embodiment 4 95.73%
Embodiment 5 96.69%
Polymeric alcohol 45%
The vector reduced rate that rubs of embodiment 1-5 is all higher than 90%, and the vector that rubs of the polymeric alcohol used currently on the market reduces Rate only has 45%, the results showed that the anti-friction function admirable of the drilling fluid extreme pressure antiwear agent.
Embodiment 7
According to product greasy property in method testing example 1-5 specified in 1170 060-2014 of standard Q/SH, profit Slip can be characterized with lubricating coefficient reduced rate.Concrete operation step is as follows:
Four parts of base slurries are prepared, every part of addition 300mL distilled water, 0.6g natrium carbonicum calcinatums, 15.0g drilling fluid experiment sodium are swollen Profit soil, 20min is stirred on high speed agitator, should be stopped twice in whipping process, be scraped and be adhered on stirring cup with glass bar Bentonite, room temperature curing in airtight condition is for 24 hours.It takes out wherein two parts of base slurries and anti-friction composition sample 3.0g is added, then stir four parts of height 5min.Measure the lubricating coefficient of base slurry and sample slurry respectively on E-P extreme boundary lubrication instrument, assay method is bored according to SY/T 6094 Well liquid with lubricator assessment process (torque arm applies 150psi pressure, keeps rotating speed 60r/min), and formula(2)Calculate lubrication Coefficient reduced rate.
(2)
In formula:
--- lubricating coefficient reduced rate, %;
--- the lubricating coefficient of base slurry;
--- the lubricating coefficient after anti-friction agent is added in base slurry.
Test result is shown in Table 2:
2 lubricating coefficient reduced rate test result of table
Sample ID Lubricating coefficient reduced rate
Embodiment 1 85.04%
Embodiment 2 89.18%
Embodiment 3 86.79%
Embodiment 4 82.95%
Embodiment 5 87.59%
Polymeric alcohol 17%
The lubricating coefficient reduced rate of polymeric alcohol currently on the market only has 17%, and the lubricating coefficient of embodiment 1-5 drops Low rate is all higher than 80%, finds out that the extreme pressure antiwear agent has good lubricity from test result.
Embodiment 8
Load-bearing capacity is a kind of detection method of product anti-friction performance.Product in testing example 1-5 according to the following steps Load-bearing capacity:
Weight tray is placed at rattling machine reinforcement multiple L(L is 28 or 30), extreme pressure anti-friction composition is added to In the oil box of rattling machine, motor is started, counterweight is added one by one at long arm of force end(First three block counterweight will slowly be put), until oil film Extreme pressure ruptures and its sends out harsh noise, calculates the total weight M of added counterweight.According to increase power multiple and counterweight total weight Calculate the load-bearing capacity P of extreme pressure antiwear agent, load-bearing capacity calculation formula:
P=M×L+20 (3)
In formula:
P --- load-bearing capacity, Kg;
The total weight of M --- counterweight, Kg;
L --- increase multiple;
20 --- initial pressure, Kg.
P values are bigger to illustrate that extreme pressure antiwear agent oil film is thicker, and anti-wear effect is better.
Test result is shown in Table 3:
3 load-bearing capacity test experiments of table
Sample ID Load-bearing capacity, Kg
Embodiment 1 320
Embodiment 2 260
Embodiment 3 290
Embodiment 4 320
Embodiment 5 320
Polymeric alcohol 60
Test result show embodiment 1-5 can bearing capacity be more than 200Kg, be better than the used polymeric alcohol in market.
Embodiment 9
The temperature tolerance of product in embodiment 1-5, tool are measured according to method specified in 1170 060-2014 of standard Q/SH Steps are as follows for body:
6 parts of base slurries are prepared, every part of addition 300mL distilled water, 0.6g natrium carbonicum calcinatums, 15.0g drilling fluid experiment sodium are swollen Profit soil, 20min is stirred on high speed agitator, should be stopped twice in whipping process, be scraped and be adhered on stirring cup with glass bar Bentonite, room temperature curing in airtight condition is for 24 hours.It takes out wherein five parts of base slurries and anti-friction composition sample 3.0g is added, then stir six parts of height 5min is added to the interior roller heating furnace of high temperature ageing kettle aging 16h at 150 DEG C.It is measured respectively on E-P extreme boundary lubrication instrument Base is starched and the lubricating coefficient of sample slurry, and according to 6094 lubricant for drilling fluids assessment processes of SY/T, (torque arm applies assay method 150psi pressure keeps rotating speed 60r/min), it is used in combination following formula to calculate lubricating coefficient reduced rate.
In formula:
--- lubricating coefficient reduced rate, %;
--- the lubricating coefficient of base slurry;
--- the lubricating coefficient after anti-friction agent is added in base slurry.
Test result is shown in Table 4:
Lubricating coefficient reduced rate after 4 150 DEG C of heat rolling aging 16h of table
Serial number Lubricating coefficient reduced rate
Embodiment 1 82.13%
Embodiment 2 85.06%
Embodiment 3 83.79%
Embodiment 4 80.95%
Embodiment 5 84.59%
Polymeric alcohol 9%
The result of test result and embodiment 7 is declined, but the amplitude very little declined, illustrates the resistance to of the extreme pressure antiwear agent Warm nature can be good.

Claims (2)

1. a kind of drilling fluid extreme pressure antiwear agent, it is characterised in that the extreme pressure antiwear agent is grouped as by two kinds of groups, base oil and table Face activating agent;The base oil is the mixture of one or more of biodiesel, vegetable oil, animal oil;It lives on the surface Property agent be laurylamide boric acid diethanol amine ester, N- dodecyl boric acid diethanol amine esters one or two kinds of mixing Object.
2. drilling fluid extreme pressure antiwear agent as described in claim 1, it is characterised in that base oil content:55% -70%, surface Active agent content:30% -45%, each composition is by mass percentage.
CN201410474247.7A 2014-09-17 2014-09-17 A kind of drilling fluid extreme pressure antiwear agent Active CN105482786B (en)

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CN110776882A (en) * 2018-07-31 2020-02-11 中国石油化工股份有限公司 Targeted friction-reducing resistance-reducing agent

Citations (4)

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Publication number Priority date Publication date Assignee Title
CN101423752A (en) * 2008-12-17 2009-05-06 山东大学 Lubricant for drilling fluids and preparation method thereof
CN101812374B (en) * 2010-04-09 2012-09-05 濮阳市诚信钻采助剂有限公司 Modified fatty acid ester, preparation method and application thereof
CN103045209A (en) * 2012-12-31 2013-04-17 中国地质大学(北京) Clean lubricant capable of preventing bit balling
WO2014066295A1 (en) * 2012-10-22 2014-05-01 M-I L.L.C. Electrically conductive wellbore fluids and methods of use

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Publication number Priority date Publication date Assignee Title
US20090291859A1 (en) * 2008-05-22 2009-11-26 Michael Valls Drilling fluid additive
CN101423852B (en) * 2008-12-11 2011-01-05 浙江大学 Method for extracting flavonoid from preserved gale core

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423752A (en) * 2008-12-17 2009-05-06 山东大学 Lubricant for drilling fluids and preparation method thereof
CN101812374B (en) * 2010-04-09 2012-09-05 濮阳市诚信钻采助剂有限公司 Modified fatty acid ester, preparation method and application thereof
WO2014066295A1 (en) * 2012-10-22 2014-05-01 M-I L.L.C. Electrically conductive wellbore fluids and methods of use
CN103045209A (en) * 2012-12-31 2013-04-17 中国地质大学(北京) Clean lubricant capable of preventing bit balling

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