CN101787266A - Method for preparing non-fluorescence lubricant for water-base drilling fluid - Google Patents
Method for preparing non-fluorescence lubricant for water-base drilling fluid Download PDFInfo
- Publication number
- CN101787266A CN101787266A CN 201010122439 CN201010122439A CN101787266A CN 101787266 A CN101787266 A CN 101787266A CN 201010122439 CN201010122439 CN 201010122439 CN 201010122439 A CN201010122439 A CN 201010122439A CN 101787266 A CN101787266 A CN 101787266A
- Authority
- CN
- China
- Prior art keywords
- water
- lubricant
- drilling fluid
- industrial
- base drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Lubricants (AREA)
Abstract
The invention discloses a method for preparing non-fluorescence lubricant for water-base drilling fluid, which relates to the technical field of lubricants for water-base drilling fluid. The method comprises the following steps: preparing the following raw materials in percentage by weight: 30 to 50 percent of industrial castor oil, rapeseed oil residue and industrial soybean oil, 0.6 to 1.0 percent of sodium pyrosulfite, 2 to 3 percent of nonyl phenol polyoxyethylene ether OP-10, 0.02 to 0.04 percent of antioxidant 501, 1.0 to 1.2 percent of caustic soda NaOH, and the balance of water; and adopting a special method to process the raw materials into the non-fluorescence lubricant. The lubricant prepared by the method has the advantages that the lubricant is free from fluorescence, good in stability, free from demixing phenomenon, capable of meeting the demand of drilling engineering, in capable of having no adverse effects on geological logging, causing no real cuttings to be got in the logging process or affecting the discovery of new hydrocarbon reservoirs.
Description
Technical field
The present invention relates to water-base drilling fluid production method technical field with lubricator, especially a kind of preparation method of water-base drilling fluid non-fluorescence lubricant.
Background technology
Although lubricant for drilling fluids has been carried out big quantity research both at home and abroad, developed various solids, liquid, and nano lubricating agent, also in different oil-gas field probings, obtained a large amount of application achievements.But, every kind of lubricant is because the difference of Working environment, be applied in the different geology blocks in different oil fields, in different drilling fluid systems, use, all showing the lubricated frictional resistance that falls falls the moment of torsion effect and differs greatly, influence factor is many and complicated, therefore every kind of lubricant has its limitation and use range again, we are necessary according to this oil field geologic situation and formation characteristics, drilling fluid and completion fluid series characteristics in conjunction with this oil field self-organizing system, work out the lubricant that has independent intellectual property right with the supporting self-character of drilling fluid and completion fluid, satisfy the regional drilling well needs of long celebrating.
And in the long celebrating in basin, Erdos field exploratory well, deep-well, horizontal well drilling process, the lubricant that uses is various in style at present, cost an arm and a leg (generally more than 20,000 yuan/ton), and quality is extremely unstable; Particularly along with the regional horizontal well development scale of long celebrating constantly enlarges, the consumption of lubricant for drilling fluid also constantly increases, and lubricant can not effectively solve long lateral segment drilling fluid lubricating drag reduction problem at present, the lubricant poor stability that has, demixing phenomenon occurs, can not satisfy the demand of drilling engineering well lubricant for drilling fluid; Moreover the part lubricant that uses has negative impact owing to there is fluorescence problem to geological logging, causes and drags on the well logging less than true landwaste, and the unfavorable result of new hydrocarbon zone is found in influence.
Thereby a kind of new drilling well industry method with lubricator for preparing of exigence, the lubricant of this method preparation requires no fluorescence, stability will be got well, demixing phenomenon does not appear, can satisfy the demand of drilling engineering well, can not have negative impact, can not cause yet and drag on the well logging, can not influence and find new hydrocarbon zone less than true landwaste to geological logging.
Summary of the invention
For solving the problems of the technologies described above, the present invention proposes a kind of preparation method and the required equipment condition is simple, the preparation method of non-fluorescence lubricant for water-base drilling fluid easy to implement, adopt the lubricant of present method preparation not have fluorescence, demixing phenomenon does not appear in good stability, can satisfy the demand of drilling engineering well, can not have negative impact, can not cause yet and drag on the well logging, can not influence and find new hydrocarbon zone less than true landwaste to geological logging.
The technical scheme that present method adopted is as follows:
A kind of preparation method of non-fluorescence lubricant for water-base drilling fluid is characterized in that step is as follows:
At first get the raw materials ready: the starting material by following weight percent are got the raw materials ready: industrial Viscotrol C, vegetable seeds oil foot and industrial soybean oil: 30%～50%; Sodium Pyrosulfite: 0.6%～1.0%; Nonylphenol Soxylat A 25-7 OP-10:2%～3%; Oxidation inhibitor 501:0.02～0.04%; Caustic soda NaOH:1.0%～1.2%; All the other are water;
Secondly, in closed reactor, add whole industrial Viscotrol C at first in strict accordance with reinforced order, vegetable seeds oil foot and industrial soybean oil, begin to stir, when temperature of reaction kettle reaches 70 ℃～90 ℃, stir and the slowly even Sodium Pyrosulfite that adds, Sodium Pyrosulfite added about 10 minutes, continued stirring reaction then 90～120 minutes, in the process of reaction caustic soda being mixed with mass concentration is 30% the aqueous solution, stop to heat, add whole nonylphenol Soxylat A 25-7 OP-10, stirring reaction is 10 minutes fast, add whole water, then under agitation slowly evenly add the caustic soda soln for preparing, the pH value is adjusted to 7-8, continued stirring reaction 15 minutes, add oxidation inhibitor 501 back restir 10 minutes, and promptly made non-fluorescence lubricant for water-base drilling fluid.
Volume ratio between described industrial Viscotrol C, vegetable seeds oil foot and the industrial soybean oil is 1: 1: 1.
Described industrial Viscotrol C, the trade name of Chu Shouing is industrial Viscotrol C on the market.
Rapeseed oil residue is that the natural subsidence thing and the rapeseed oil aquation dephosphorization of rapeseed oil got a foothold.
The Sodium Pyrosulfite of described adding is 2.0% of an industrial Viscotrol C weight.
Material preparation step forms lubricant by the raw material preparing of following weight percent: industrial Viscotrol C, vegetable seeds oil foot, industrial soybean oil: 30%, Sodium Pyrosulfite: 0.6%, nonylphenol Soxylat A 25-7 2%, oxidation inhibitor 501:0.02%, caustic soda NaOH:1.0%, all the other are water.
The beneficial effect that the present invention reached is as follows:
One, compared with prior art, the material cost that present method adopted is low, preparation method and required equipment condition are simple, easy to implement, can satisfy in the exceptional well wellbore construction process the lubricant for drilling fluid requirement, can reduce production costs significantly again, obtain good economic benefit and social benefit, be worthy of popularization very much.And adopt the lubricant of present method preparation, no fluorescence, good stability, demixing phenomenon do not occur, can satisfy the demand of drilling engineering well, can not have negative impact geological logging, can not cause yet and drag on the well logging, can not influence and find new hydrocarbon zone less than true landwaste.
Two, with the described prescription of present method, the lubricant that adopts preparation method commonly used in the petroleum drilling industry to make, with respect to prior art, quality stability is good, can not cause occurring demixing phenomenon, can satisfy the demand of drilling engineering well.
Three, the present invention can be applicable to the long celebrating in basin, Erdos field exploratory well, deep-well, horizontal well, plays good lubrication drag reduction effect.
Embodiment
The invention will be further described below in conjunction with specific embodiment:
Embodiment 1
Industrial Viscotrol C, vegetable seeds oil foot and industrial soybean oil (volume ratio 1: 1: 1): 40%, Sodium Pyrosulfite: 0.6%, nonylphenol Soxylat A 25-7 OP-10:2%, oxidation inhibitor 501:0.02%, caustic soda NaOH:1.0%, all the other are water.In closed reactor, add industrial Viscotrol C and vegetable seeds oil foot and industrial soybean oil at first in strict accordance with reinforced order, begin to stir, when temperature of reaction kettle reaches 70 ℃～90 ℃, stir and the slowly even Sodium Pyrosulfite (adding about 10 minutes) that adds, stirring reaction 90～120 minutes is mixed with caustic soda 30% the aqueous solution in reaction process, stop to heat, add nonylphenol Soxylat A 25-7 OP-10, stirring reaction is 10 minutes fast.Add entry, under agitation slowly evenly add the caustic soda soln for preparing, the pH value is adjusted to 7-8, stirring reaction 15 minutes adds oxidation inhibitor 501 and stirred 10 minutes, promptly makes non-fluorescence lubricant for water-base drilling fluid of the present invention.
One, embodiment 1 water-base drilling fluid testing experiment with lubricator
Under this test simulation northern Shensi storehouse or the aboveground ultimate temperature after (winter :-30 °, summer: 50 °, 25 ° of autumns in spring) long-time placement, observed the stability of the lubricant of embodiment 1, with 6% sodium bentonite slurry is the base slurry, has estimated the lubricant lubrication drag reduction performance of the embodiment of the invention 1.
Test 1: the stability of the samples of lubricant of embodiment 1 is measured
Respectively with production sample after 25 ° of-30 °, 50 °, normal temperature are placed January, observation sample outward appearance, breakdown of emulsion whether the results are shown in Table 1.
Table 2 outward appearance and breakdown of emulsion situation
| Numbering | Temperature | Time | Appearance change is described |
| ??1 | ??-30℃ | January | Become little yellow homogeneous solid after freezing, (or water-bath the heat thaw) back that thaws naturally is light yellow liquid, with freezing before the contrast no change, no layering demulsifying phenomenon |
| ??2 | ??25℃ | January | Become little yellow homogeneous solid after freezing, (or water-bath the heat thaw) back that thaws naturally is light yellow liquid, and contrasts no change before January, no layering demulsifying phenomenon |
| ??3 | ??50℃ | January | Become little yellow homogeneous solid after freezing, (or water-bath the heat thaw) back that thaws naturally is light yellow liquid, and contrasts no change before January, no layering demulsifying phenomenon |
Test 2: the lubricant lubrication drag reduction performance evaluation of embodiment 1
The 6% slope soil paste of aquation after 24 hours adds (dividing fresh water slurry or NaCl salt slurries) samples of lubricant of 1% embodiment 1, and height stirs after 10 minutes and is lubricated performance evaluation with the extreme boundary lubrication instrument, the results are shown in Table 2.
The lubrication drag reduction performance of table 2 lubricant
| Numbering | The sample storage condition | Base slurry type | The foaming situation is described | Meter reading | Lubricating coefficient | Lubricating coefficient reduced rate/% |
| ??1 | -30 ℃ * January | The fresh water slurry | Stir in the process non-foaming at height | ??5.0 | ??0.047753 | ??90.6 |
| ??2 | -30 ℃ * January | Salt slurries | Stir in the process non-foaming at height | ??12.2 | ??0.115866 | ??77.2 |
| ??3 | 25 ℃ * January | The fresh water slurry | Stir in the process non-foaming at height | ??4.5 | ??0.043099 | ??92.4 |
| ??4 | 25 ℃ * January | Salt slurries | Stir in the process non-foaming at height | ??14.5 | ??0.131818 | ??76.7 |
| Numbering | The sample storage condition | Base slurry type | The foaming situation is described | Meter reading | Lubricating coefficient | Lubricating coefficient reduced rate/% |
| ??5 | 50 ℃ * January | The fresh water slurry | Stir in the process non-foaming at height | ??7.2 | ??0.070548 | ??86.5 |
| ??6 | 50 ℃ * January | Salt slurries | Stir in the process non-foaming at height | ??11.0 | ??0.102466 | ??79.8 |
Annotate: No. 1 experiment clear water value is 35.6, and basic slurry value is 53.0; No. 2 experiment clear water value is 35.8, and basic slurry value is 53.6;
No. 3 experiment clear water value is 35.5, and basic slurry value is 59.0; No. 4 experiment clear water value is 37.4, and basic slurry value is 62.1;
No. 5 experiment clear water value is 34.7, and basic slurry value is 53.4; No. 6 experiment clear water value is 36.5, and basic slurry value is 54.5.
From table 1 and table 2 as can be seen, every performance index of the lubricant for drilling fluid of embodiment 1 all reach on-the-spot service requirements, can pay rig-site utilization.
Two, embodiment 1 water-base drilling fluid every performance with lubricator
| Project | Data that record and performance |
| The apparent viscosity lift-off value, mPa.s | 2 |
| The lubricating coefficient reduced rate, % | 86.8 |
| The low-temp low-pressure filter loss, mL | Reduce 2.4ml |
| Fluorescence grade | Do not have |
| Compatibility is capable | Other performance to drilling fluid does not have influence |
| Stability | Under simulation northern Shensi storehouse or the aboveground ultimate temperature (winter :-30 °, summer: 50 °, spring and autumn 25 ° of normal temperature) after long-time the placement, not stratified not breakdown of emulsion, stable performance. |
Embodiment 2
Industry Viscotrol C and vegetable seeds oil foot and industrial soybean oil (volume ratio 1: 1: 1): 30%, Sodium Pyrosulfite: 0.8%, nonylphenol Soxylat A 25-7 OP-10:3%, oxidation inhibitor 501:0.04%, caustic soda NaOH:1.2%, all the other are water.In closed reactor, add Viscotrol C or rape seed oil residual oil (garbage grease) or soybean oil at first in strict accordance with reinforced order, begin to stir, when temperature of reaction kettle reaches 70 ℃～90 ℃, stir and the slowly even Sodium Pyrosulfite (adding about 10 minutes) that adds, stirring reaction 90～120 minutes is mixed with caustic soda 30% the aqueous solution in reaction process, stop to heat, add nonylphenol Soxylat A 25-7 OP-10, stirring reaction is 10 minutes fast.Add entry, slowly evenly add the caustic soda soln for preparing under agitation condition, the pH value is adjusted to 7-8, stirring reaction 15 minutes adds oxidation inhibitor 501 and stirred 10 minutes, promptly makes non-fluorescence lubricant for water-base drilling fluid of the present invention.
Embodiment 3
Industry Viscotrol C and vegetable seeds oil foot and industrial soybean oil (volume ratio 1: 1: 1): 50%, Sodium Pyrosulfite: 1.0%, nonylphenol Soxylat A 25-7 OP-10:3%, oxidation inhibitor 501:0.04%, caustic soda NaOH:1.2%, all the other are water.In closed reactor, add industrial Viscotrol C and vegetable seeds oil foot and industrial soybean oil at first in strict accordance with reinforced order, begin to stir, when temperature of reaction kettle reaches 70 ℃～90 ℃, stir and the slowly even Sodium Pyrosulfite (adding about 10 minutes) that adds, stirring reaction 90～120 minutes is mixed with caustic soda 30% the aqueous solution in reaction process, stop to heat, add nonylphenol Soxylat A 25-7 OP-10, stirring reaction is 10 minutes fast.Add entry, slowly evenly add the caustic soda soln for preparing under agitation condition, the pH value is adjusted to 7-8, stirring reaction 15 minutes adds oxidation inhibitor 501 and stirred 10 minutes, promptly makes non-fluorescence lubricant for water-base drilling fluid of the present invention.
Embodiment 4
The invention discloses a kind of preparation method of non-fluorescence lubricant for water-base drilling fluid, it is characterized in that step is as follows:
At first get the raw materials ready: the starting material by following weight percent are got the raw materials ready: industrial Viscotrol C, vegetable seeds oil foot and industrial soybean oil: 30%～50%; Sodium Pyrosulfite: 0.6%～1.0%; Nonylphenol Soxylat A 25-7 OP-10:2%～3%; Oxidation inhibitor 501:0.02～0.04%; Caustic soda NaOH:1.0%～1.2%; All the other are water;
Secondly, in closed reactor, add whole industrial Viscotrol C at first in strict accordance with reinforced order, vegetable seeds oil foot and industrial soybean oil, begin to stir, when temperature of reaction kettle reaches 70 ℃～90 ℃, stir and the slowly even Sodium Pyrosulfite that adds, Sodium Pyrosulfite added about 10 minutes, continued stirring reaction then 90～120 minutes, in the process of reaction caustic soda being mixed with mass concentration is 30% the aqueous solution, stop to heat, add whole nonylphenol Soxylat A 25-7 OP-10, stirring reaction is 10 minutes fast, add whole water, then under agitation slowly evenly add the caustic soda soln for preparing, the pH value is adjusted to 7-8, continued stirring reaction 15 minutes, add oxidation inhibitor 501 back restir 10 minutes, and promptly made non-fluorescence lubricant for water-base drilling fluid.Volume ratio between described industrial Viscotrol C, vegetable seeds oil foot and the industrial soybean oil is 1: 1: 1.Described industrial Viscotrol C, the trade name of Chu Shouing is industrial Viscotrol C on the market.Rapeseed oil residue is that the natural subsidence thing and the rapeseed oil aquation dephosphorization of rapeseed oil got a foothold.The Sodium Pyrosulfite of described adding is 2.0% of an industrial Viscotrol C weight.
Embodiment 5
Material preparation step forms lubricant by the raw material preparing of following weight percent in present method: industrial Viscotrol C, vegetable seeds oil foot, industrial soybean oil: 30%, Sodium Pyrosulfite: 0.6%, nonylphenol Soxylat A 25-7 2%, oxidation inhibitor 501:0.02%, caustic soda NaOH:1.0%, all the other are water.Other steps such as embodiment 4.
Claims (6)
1. the preparation method of a non-fluorescence lubricant for water-base drilling fluid is characterized in that step is as follows:
At first get the raw materials ready: the starting material by following weight percent are got the raw materials ready: industrial Viscotrol C, vegetable seeds oil foot and industrial soybean oil: 30%～50%; Sodium Pyrosulfite: 0.6%～1.0%; Nonylphenol Soxylat A 25-7 OP-10:2%～3%; Oxidation inhibitor 501:0.02～0.04%; Caustic soda NaOH:1.0%～1.2%; All the other are water;
Secondly, in closed reactor, add whole industrial Viscotrol C at first in strict accordance with reinforced order, vegetable seeds oil foot and industrial soybean oil, begin to stir, when temperature of reaction kettle reaches 70 ℃～90 ℃, stir and the slowly even Sodium Pyrosulfite that adds, Sodium Pyrosulfite added about 10 minutes, continued stirring reaction then 90～120 minutes, in the process of reaction caustic soda being mixed with mass concentration is 30% the aqueous solution, stop to heat, add whole nonylphenol Soxylat A 25-7 OP-10, stirring reaction is 10 minutes fast, add whole water, then under agitation slowly evenly add the caustic soda soln for preparing, the pH value is adjusted to 7-8, continued stirring reaction 15 minutes, add oxidation inhibitor 501 back restir 10 minutes, and promptly made non-fluorescence lubricant for water-base drilling fluid.
2. the preparation method of non-fluorescence lubricant for water-base drilling fluid according to claim 1, it is characterized in that: the volume ratio between described industrial Viscotrol C, vegetable seeds oil foot and the industrial soybean oil is 1: 1: 1.
3. the preparation method of non-fluorescence lubricant for water-base drilling fluid according to claim 1 and 2, it is characterized in that: described industrial Viscotrol C, the trade name of Chu Shouing is industrial Viscotrol C on the market.
4. the preparation method of non-fluorescence lubricant for water-base drilling fluid according to claim 1 and 2 is characterized in that: rapeseed oil residue is that the natural subsidence thing and the rapeseed oil aquation dephosphorization of rapeseed oil got a foothold.
5. the preparation method of non-fluorescence lubricant for water-base drilling fluid according to claim 1 and 2, it is characterized in that: the Sodium Pyrosulfite of described adding is 2.0% of an industrial Viscotrol C weight.
6. the preparation method of non-fluorescence lubricant for water-base drilling fluid according to claim 1, it is characterized in that: material preparation step forms lubricant by the raw material preparing of following weight percent: industrial Viscotrol C, vegetable seeds oil foot, industrial soybean oil: 30%, Sodium Pyrosulfite: 0.6%, nonylphenol Soxylat A 25-7 2%, oxidation inhibitor 501:0.02%, caustic soda NaOH:1.0%, all the other are water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010122439 CN101787266B (en) | 2010-03-11 | 2010-03-11 | Method for preparing non-fluorescence lubricant for water-base drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010122439 CN101787266B (en) | 2010-03-11 | 2010-03-11 | Method for preparing non-fluorescence lubricant for water-base drilling fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101787266A true CN101787266A (en) | 2010-07-28 |
| CN101787266B CN101787266B (en) | 2012-12-19 |
Family
ID=42530648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010122439 Expired - Fee Related CN101787266B (en) | 2010-03-11 | 2010-03-11 | Method for preparing non-fluorescence lubricant for water-base drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101787266B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181272A (en) * | 2011-03-09 | 2011-09-14 | 张清玉 | Anti-collapse and filtration-reducing lubricating agent for drilling fluid, and preparation method and application method thereof |
| CN109666460A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工股份有限公司 | Water-base drilling fluid particle stabilized nanoemulsions lubricant and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743404A (en) * | 2004-09-02 | 2006-03-08 | 中国石油天然气集团公司 | Drilling fluid lubricating additive and its preparing method |
-
2010
- 2010-03-11 CN CN 201010122439 patent/CN101787266B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743404A (en) * | 2004-09-02 | 2006-03-08 | 中国石油天然气集团公司 | Drilling fluid lubricating additive and its preparing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181272A (en) * | 2011-03-09 | 2011-09-14 | 张清玉 | Anti-collapse and filtration-reducing lubricating agent for drilling fluid, and preparation method and application method thereof |
| CN102181272B (en) * | 2011-03-09 | 2012-08-08 | 张清玉 | Anti-collapse and filtration-reducing lubricating agent for drilling fluid, and preparation method and application method thereof |
| CN109666460A (en) * | 2017-10-13 | 2019-04-23 | 中国石油化工股份有限公司 | Water-base drilling fluid particle stabilized nanoemulsions lubricant and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101787266B (en) | 2012-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103320104B (en) | A kind of water-in-oil-type biofuel base drilling fluid and preparation method thereof | |
| CN107556988B (en) | High-temperature-resistant environment-friendly drilling fluid lubricant and preparation method thereof | |
| CN101429424B (en) | Di-kalium ion-polymer drilling fluid with strong rejection capability | |
| CN109439294B (en) | Temperature-resistant and salt-resistant extreme pressure lubricant for high-density drilling fluid and preparation method thereof | |
| CN104861944A (en) | Deepwater constant-rheology oil base drilling fluid | |
| CN106574174A (en) | Ecofriendly lubricating additives for water-based wellbore drilling fluids | |
| CN104962247B (en) | A kind of drilling fluid lubrication sealing agent and preparation method thereof | |
| CN102676129B (en) | Water-based lubricant for drilling fluid as well as preparation and application of water-base lubricant | |
| CN103045183B (en) | Illegal cooking oil lubricant and preparation method thereof | |
| CN102851006A (en) | Bio-oil lubricant for drilling wells and preparation method of bio-oil lubricant | |
| CN102391840B (en) | Non-toxic, non-fluorescent lubricant for drilling fluid | |
| CN101787265B (en) | Non-fluorescence lubricant for water-base drilling fluid | |
| CN102851009A (en) | Organic salt high-density drilling fluid | |
| CN105985758B (en) | A kind of sealing agent, drilling fluid containing the sealing agent and its preparation method and application | |
| CN105838494A (en) | Environment-friendly concentrated solution for hydraulic support and preparation method of environment-friendly concentrated solution | |
| CN102277140A (en) | Multifunctional solid lubricant for well drilling liquid | |
| CN103923623B (en) | A kind of oil base drilling fluid | |
| CN102965087A (en) | High-temperature-resistant drilling fluid | |
| CN104650833A (en) | Oil-in-water emulsion drilling fluid and preparation method thereof | |
| CN105189694A (en) | Additives for oil-based drilling fluids | |
| CN101787266B (en) | Method for preparing non-fluorescence lubricant for water-base drilling fluid | |
| CN1861736A (en) | Solid lubricant for well drilling liquid and preparation process thereof | |
| CN104357029B (en) | Cleaning and lubricating fast drilling agent and preparation method thereof | |
| CN105349123A (en) | Oil-in-water drilling fluid taking biodiesel as dispersion phase as well as preparation method and application thereof | |
| CN101717622A (en) | Lubricating inhibitor for drilling fluid and preparation method thereof and drilling fluid containing lubricating inhibitor for drilling fluid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20180311 |