CN111676004A - High-temperature-resistant ultrahigh-density oil-based drilling fluid and preparation method thereof - Google Patents
High-temperature-resistant ultrahigh-density oil-based drilling fluid and preparation method thereof Download PDFInfo
- Publication number
- CN111676004A CN111676004A CN202010541781.0A CN202010541781A CN111676004A CN 111676004 A CN111676004 A CN 111676004A CN 202010541781 A CN202010541781 A CN 202010541781A CN 111676004 A CN111676004 A CN 111676004A
- Authority
- CN
- China
- Prior art keywords
- oil
- drilling fluid
- based drilling
- density
- temperature
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
- C09K8/36—Water-in-oil emulsions
Abstract
The application provides a high temperature resistant ultra-high density oil-based drilling fluid, including following composition: the water-in-oil emulsion comprises a water-in-oil base fluid, a main emulsifier, an auxiliary emulsifier, a filtrate reducer, an alkalinity regulator, organic soil, a wetting agent and a weighting agent, wherein the weighting agent comprises barite and micro manganese powder Micromax. In addition, the application also provides a preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid. The high-temperature-resistant ultrahigh-density oil-based drilling fluid and the preparation method thereof can provide the highest density of 3.0g/cm3The high-temperature and high-pressure filtration loss is less than or equal to 6mL, the plastic viscosity PV is less than or equal to 71mPa & s, the dynamic shear force YP is less than or equal to 32Pa, and the dynamic sedimentation density difference △ rho is less than or equal to 0.05g/cm3The high-temperature-resistant ultrahigh-density oil-based drilling fluid has a viscosity-shear value within a reasonable range and good rheological property, and can meet the drilling requirements of three-high wells.
Description
Technical Field
The invention relates to the technical field of petroleum drilling engineering, in particular to drilling fluid and a preparation method thereof.
Background
With the further development of exploration and development technologies, the drilling of ultra-deep, ultra-high temperature and ultra-high pressure 'three-super well' is increasing. Due to the large formation pressure and the high downhole temperature (180-200 ℃), the drilling process faces the technical problems of high pressure (higher than 70MPa), high water sensitivity, easy collapse of shale, easy creep of a gypsum layer and the like. Aiming at the stratum, the oil-based drilling fluid is a main technical solution, and compared with the water-based drilling fluid, the oil-based drilling fluid has the advantages of high temperature resistance, salt resistance, calcium erosion resistance, contribution to well wall stability, good lubricity, small damage degree to an oil gas layer and the like.
When dealing with ultrahigh pressure stratum, stratum with strong water sensitivity and easy creep, the high temperature resistance (180-200 ℃) ultrahigh density (rho is more than or equal to 2.4g/cm3) An oil-based drilling fluid. However, the existing oil-based drilling fluid has low base liquid density, and the density of the oil-based drilling fluid is improved by adding more materials, so that the solid content is extremely high, and the contradiction relationship between rheological property and sedimentation stability is difficult to balance. As a result, there has been still less research on ultra-high density oil-based drilling fluid technology.
The Chinese patent application with the publication number of CN105623628A describes an ultra-high density oil-based drilling fluid and a preparation method thereof, and the density of the ultra-high density oil-based drilling fluid can reach 2.80g/cm at most3The test showed a maximum temperature resistance of 150 ℃.
At present, the temperature resistance is more than 150 ℃ and the density is higher than 2.80g/cm3And no description is given of oil-based drilling fluids having well-balanced rheological properties and sedimentation stability.
Disclosure of Invention
In view of the problems in the background art, the invention provides a high-temperature-resistant ultrahigh-density oil-based drilling fluid, which comprises the following components:
the water-in-oil emulsion comprises a water-in-oil base fluid, a main emulsifier, an auxiliary emulsifier, a filtrate reducer, an alkalinity regulator, organic soil, a wetting agent and a weighting agent, wherein the weighting agent comprises barite and micro manganese powder Micromax.
In some embodiments of the invention, the water-in-oil base fluid comprises a base oil and a brine in a volume ratio of 80:20 to 95: 5; the weighting agent comprises barite and micro manganese powder Micromax in a mass ratio of 80: 20-20: 80; the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid: 0.5-4 g of main emulsifier, 1-4 g of auxiliary emulsifier, 0.5-3 g of wetting agent, 4-8 g of filtrate reducer, 1-4 g of alkalinity regulator, 0-3 g of organic soil, 120-360 g of barite and 64-480 g of micro manganese powder.
In some embodiments of the invention, the base oil is a mineral oil or a diesel oil.
In some embodiments of the present invention, the brine is a calcium chloride aqueous solution with a mass concentration of 20-30%.
In some embodiments of the invention, the primary emulsifier is PF-MOMUL; the auxiliary emulsifier is PF-MOCOAT; the wetting agent is PF-MOWET-260.
In some embodiments of the invention, the alkalinity modulator is calcium oxide.
In some embodiments of the invention, the organic clay is an organobentonite or an organomonomontmorillonite.
In some embodiments of the present invention, the fluid loss additive is one or more selected from sulfonated asphalt, modified asphalt, natural asphalt, humic acid amide, organic lignite, and emulsified asphalt.
In some embodiments of the invention, the oil-based drilling fluid has a density of up to 2.4g/cm3～3.0g/cm3And after rolling aging for 16h at 200 ℃, the HTHP FL (180 ℃) is less than or equal to 6 mL.
In addition, the invention provides a preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid, which comprises the following steps:
A. measuring base oil, respectively adding a main emulsifier, an auxiliary emulsifier and a wetting agent, and stirring;
B. adding saline water, and stirring;
C. respectively adding an alkalinity regulator, organic soil and a filtrate reducer, and continuously stirring;
D. adding weighting agent and stirring;
the weighting agent comprises barite and micro manganese powder Micromax.
In some embodiments of the invention, the water-in-oil base fluid comprises a base oil and a brine in a volume ratio of 80:20 to 95: 5; the weighting agent comprises barite and micro manganese powder Micromax in a mass ratio of 80: 20-20: 80; the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid: 0.5-4 g of main emulsifier, 1-4 g of auxiliary emulsifier, 0.5-3 g of wetting agent, 4-8 g of filtrate reducer, 1-4 g of alkalinity regulator, 0-3 g of organic soil, 120-360 g of barite and 64-480 g of micro manganese powder.
In some embodiments of the invention, the stirring time in the step A is 4-6 min; the stirring time in the step B is 15-20 min; the stirring time in the step C is 10-20 min; the stirring time in the step D is 30-40 min; and the stirring speed in the steps A to D is 12000 r/min.
The ultrahigh-density oil-based drilling fluid disclosed by the invention has the following properties: the density is 3.0g/cm at most3The high-temperature high-pressure filtration loss is less than or equal to 6mL, the plastic viscosity PV is less than or equal to 71mPa & s, the dynamic shear force YP is less than or equal to 32Pa, and the dynamic settling density difference △ rho is less than or equal to 0.05g/cm3。
Compared with the prior art, the invention has the following beneficial effects:
1. the highest density of the high-temperature-resistant ultrahigh-density oil-based drilling fluid provided by the invention can reach 3.0g/cm3Temperature resistance up to 200 ℃;
2. the high-temperature-resistant ultrahigh-density oil-based drilling fluid provided by the invention has good emulsification stability, rheological property and sedimentation stability;
3. the treating agent of the high-temperature-resistant ultrahigh-density oil-based drilling fluid provided by the invention is small in dosage and low in preparation cost;
4. the high-temperature-resistant ultrahigh-density oil-based drilling fluid provided by the invention is small in filtration loss, and the weighting material can be acidified and is easy to flowback, so that the reservoir is slightly damaged.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail with reference to specific embodiments. It should be understood, however, that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art.
Before describing in detail specific embodiments of the present invention, the following description will proceed with reference being made to specific components used in the following examples:
the main emulsifier is a high-temperature resistant oil-based drilling fluid main emulsifier, and mainly adopts diterpene oxygenated surfactant (code PF-MOMUL) produced by Zhonghai oil-well oilfield chemical company.
The auxiliary emulsifier is called high temperature resistant oil-based drilling fluid auxiliary emulsifier, and is mainly alkyl polybasic amide surfactant (PF-MOCOAT) produced by Zhonghai oil field chemical company.
The wetting agent is a mixture (code PF-MOWET-260) of a polybasic amido amine surfactant and an imidazoline derivative produced by Zhonghai oil field chemical company.
The filtrate reducer is mainly prepared by compounding one or more of commercial sulfonated asphalt, modified asphalt, natural asphalt, humic acid amide, organic lignite and emulsified asphalt
The alkalinity regulator mainly adopts the commercially available calcium oxide.
The organic soil is mainly organic bentonite or organic montmorillonite which is commercially available.
The weighting agent mainly adopts commercially available barite (meeting API standard or having granularity of 2000-5000 meshes) to be compounded with micro manganese powder Micromax sold by Gulaite science and technology corporation.
Examples 1-6 provide high temperature resistant ultra high density oil-based drilling fluids having the following additive content (in g):
the preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid provided by the invention comprises the following steps:
A. measuring base oil, respectively adding a main emulsifier, an auxiliary emulsifier and a wetting agent, and stirring;
B. adding saline water, and stirring;
C. respectively adding an alkalinity regulator, organic soil and a filtrate reducer, and continuously stirring;
D. adding weighting agent and stirring;
the volume ratio of the base oil to the brine is 80: 20-95: 5; the weighting agent is formed by compounding barite and micro-manganese powder Micromax.
And the stirring speed in the steps A to D is 12000 r/min.
Example 1
This example provides a density of 2.4g/cm3The high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following components:
the water-in-oil base fluid consists of No. 0 diesel oil with the volume ratio of 85:15 and 25 percent calcium chloride aqueous solution;
the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid:
PF-MOMUL 0.8g, PF-MOCOAT 1g, PF-MOWET-2601 g, modified asphalt 5g, calcium oxide 3g, organic bentonite 1.5g, barite 192g and micro manganese powder Micromax 128 g.
The preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following steps:
A. measuring 255mL of No. 0 diesel oil by using a measuring cylinder, pouring into a high-speed stirring cup, respectively adding 2.4g of PF-MOMUL, 3g of PF-MOCOAT and 2603 g of PF-MOWET, and stirring for 4 min;
B. adding 45mL of 25% calcium chloride aqueous solution, and stirring for 15 min;
C. respectively adding 9g of calcium oxide, 4.5g of organic bentonite and 15g of modified asphalt, and stirring for 10 min;
D. 575g of barite and 385g of micro manganese powder are added and stirred for 30 min.
And the stirring speed in the steps A to D is 12000 r/min.
Example 2
This exampleProvides a density of 2.6g/cm3The high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following components:
the water-in-oil base fluid comprises No. 0 diesel oil with the volume ratio of 90:10 and a calcium chloride aqueous solution with the concentration of 25 percent;
the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid:
PF-MOMUL 0.8g, PF-MOCOAT 1g, PF-MOWET-2602 g, humic acid amide 5g, calcium oxide 2g, organic bentonite 1g, barite 234g and micro manganese powder Micromax 156 g.
The preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following steps:
A. measuring 270mL No. 0 diesel oil by using a measuring cylinder, pouring into a high-speed stirring cup, respectively adding 2.4g of PF-MOMUL, 3g of PF-MOCOAT and 2606 g of PF-MOWET, and stirring for 5 min;
B. adding 30mL of 25% calcium chloride aqueous solution, and stirring for 18 min;
C. respectively adding 6g of calcium oxide, 3g of organic bentonite and 15g of humic acid amide, and stirring for 15 min;
D. adding 702g of barite and 468g of Micromax powder, and stirring for 35 min.
And the stirring speed in the steps A to D is 12000 r/min.
Example 3
This example provides a density of 2.8g/cm3The high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following components:
the water-in-oil base fluid comprises No. 0 diesel oil with the volume ratio of 90:10 and a calcium chloride aqueous solution with the concentration of 25 percent;
the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid:
PF-MOMUL 1g, PF-MOCOAT 1g, PF-MOWET-2602 g, modified asphalt 6g, calcium oxide 3g, organic bentonite 0.3g, barite 291g and micro manganese powder Micromax 194 g.
The preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following steps:
A. measuring 270mL No. 0 diesel oil by using a measuring cylinder, pouring into a high-speed stirring cup, respectively adding 3g of PF-MOMUL, 3g of PF-MOCOAT and 2606 g of PF-MOWET, and stirring for 6 min;
B. adding 30mL of 25% calcium chloride aqueous solution, and stirring for 20 min;
C. respectively adding 9g of calcium oxide, 0.9g of organic bentonite and 18g of modified asphalt, and stirring for 20 min;
D. 873g of barite and 582g of Micromax of micro manganese powder are added and stirred for 40 min.
And the stirring speed in the steps A to D is 12000 r/min.
Example 4
This example provides a density of 3.0g/cm3The high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following components:
the water-in-oil base fluid comprises No. 0 diesel oil with the volume ratio of 95:5 and 25 percent calcium chloride aqueous solution;
the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid:
PF-MOMUL 1g, PF-MOCOAT 1g, PF-MOWET-2602 g, modified asphalt 6g, calcium oxide 3g, barite 360g and micro manganese powder 240 g.
The preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following steps:
A. measuring 270mL No. 0 diesel oil by using a measuring cylinder, pouring into a high-speed stirring cup, respectively adding 3g of PF-MOMUL, 3g of PF-MOCOAT and 2606 g of PF-MOWET, and stirring for 5 min;
B. adding 15mL of 25% calcium chloride aqueous solution, and stirring for 15 min;
C. respectively adding 9g of calcium oxide and 18g of modified asphalt, and stirring for 20 min;
D. 1080g of barite and 720g of Micromax of micro manganese powder are added and stirred for 40 min.
And the stirring speed in the steps A to D is 12000 r/min.
Example 5
This example provides a density of 2.4g/cm3The high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following components:
the water-in-oil base fluid comprises mineral oil and 20% calcium chloride aqueous solution in a volume ratio of 80: 20;
the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid:
PF-MOMUL 0.5g, PF-MOCOAT 3g, PF-MOWET-2600.5 g, natural asphalt 2g, organic lignite 2g, calcium oxide 1g, organic montmorillonite 3g, barite 256g and micro manganese powder Micromax 64 g.
The preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following steps:
A. measuring 240mL No. 0 diesel oil by using a measuring cylinder, pouring into a high-speed stirring cup, respectively adding 1.5g of PF-MOMUL, 9g of PF-MOCOAT and 78 g of PF-MOWET-2601.5 g, and stirring for 5 min;
B. adding 60mL of 20% calcium chloride aqueous solution, and stirring for 15 min;
C. respectively adding 3g of calcium oxide, 9g of organic montmorillonite, 6g of natural asphalt and 6g of organic lignite, and stirring for 20 min;
D. 768g of barite and 192g of micro-manganese powder are added and stirred for 40 min.
And the stirring speed in the steps A to D is 12000 r/min.
Example 6
This example provides a density of 3.0g/cm3The high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following components:
the water-in-oil base fluid comprises No. 0 diesel oil with the volume ratio of 95:5 and calcium chloride aqueous solution with the concentration of 30 percent;
the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid:
F-MOMUL 4g, PF-MOCOAT 4g, PF-MOWET-2603 g, modified asphalt 3g, sulfonated asphalt 3g, emulsified asphalt 2g, calcium oxide 4g, barite 120g and micro manganese powder Micromax 480 g.
The preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following steps:
A. measuring 270mL No. 0 diesel oil by using a measuring cylinder, pouring into a high-speed stirring cup, respectively adding 12g of F-MOMUL, 12g of PF-MOCOAT and 2609 g of PF-MOWET, and stirring for 5 min;
B. adding 15mL of 30% calcium chloride aqueous solution, and stirring for 15 min;
C. respectively adding 12g of calcium oxide, 3g of modified asphalt, 3g of sulfonated asphalt and 2g of emulsified asphalt, and stirring for 20 min;
D. adding 360g of barite and 1440g of Micromax powder, and stirring for 40 min.
And the stirring speed in the steps A to D is 12000 r/min.
Comparative example 1
The composition and content of the oil-based drilling fluid provided by the comparative example are basically the same as those of example 1, except that the compounding ratio of the barite to the micro-manganese powder is 90: 10.
Comparative example 2
The composition and content of the oil-based drilling fluid provided by the comparative example are substantially the same as those of example 3, except that 100% barite weighting is used, i.e., no micro-manganese powder weighting is used.
Comparative example 3
The oil-based drilling fluid provided by this comparative example had essentially the same composition and content as example 4, except that the wetting agent was added in an amount of 0 g.
Comparative example 4
The composition and content of the oil-based drilling fluid provided by this comparative example was substantially the same as example 4, except that the oil-to-water ratio was 70: 30.
Testing the performance of the high-temperature resistant ultra-high density oil-based drilling fluid:
the test method comprises the following steps: the ultra-high density drilling fluids prepared in examples 1 to 6 and comparative examples 1 to 4 were placed in an aging tank and hot rolled at a high temperature of 200 ℃ for 16 hours, and the rheological properties and the dynamic settling stability of the drilling fluids were measured according to the oil-based drilling fluid test procedure (GB/T16783.2-2012), with the test results shown in Table 1.
TABLE 1 rheological Property evaluation results of ultra-high density oil-based drilling fluids (200 ℃ C. hot roll 16h)
As can be seen from the performance test results of table 1: after the high-temperature-resistant ultrahigh-density oil-based drilling fluid provided by the embodiment of the invention is aged for 16 hours at the high temperature of 200 ℃, the density of the drilling fluid is 2.4g/cm3～3.0g/cm3Viscosity (AV, PV) and shear force (YP, G) thereof10s、G10min) The viscosity-cut value is in a reasonable range and the rheological property is good. The dynamic settling density difference of the comparative example 1 is obviously increased, the viscosity of the oil-based drilling fluid of the comparative example 2-4 is very high, and the oil-based drilling fluid cannot be tested and cannot meet the field application requirements.
Through the comparison, the ultrahigh-density oil-based drilling fluid provided by the invention is proved to have the density of up to 3.0g/cm3The high-temperature-resistant drilling fluid still has good performance after being aged at the temperature of 200 ℃, and can meet the drilling requirements of three-high wells.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and are not limitative. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following components:
the water-in-oil emulsion comprises a water-in-oil base fluid, a main emulsifier, an auxiliary emulsifier, a filtrate reducer, an alkalinity regulator, organic soil, a wetting agent and a weighting agent, wherein the weighting agent comprises barite and micro manganese powder Micromax.
2. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1, wherein:
the water-in-oil base fluid comprises base oil and brine in a volume ratio of 80: 20-95: 5;
the weighting agent comprises barite and micro manganese powder Micromax in a mass ratio of 80: 20-20: 80;
the addition amount of the other components is as follows based on every 100mL of water-in-oil base liquid:
0.5-4 g of main emulsifier, 1-4 g of auxiliary emulsifier, 0.5-3 g of wetting agent, 4-8 g of filtrate reducer, 1-4 g of alkalinity regulator, 0-3 g of organic soil, 120-360 g of barite and 64-480 g of micro manganese powder.
3. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1 or 2, wherein: the base oil is mineral oil or diesel oil.
4. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1 or 2, wherein: the saline water is a calcium chloride water solution with the mass concentration of 20-30%.
5. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1 or 2, wherein:
the main emulsifier is PF-MOMUL; the auxiliary emulsifier is PF-MOCOAT; the wetting agent is PF-MOWET-260.
6. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1 or 2, wherein: the alkalinity regulator is calcium oxide.
7. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1 or 2, wherein: the organic soil is organic bentonite or organic montmorillonite.
8. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1 or 2, wherein: the fluid loss additive is one or more of sulfonated asphalt, modified asphalt, natural asphalt, humic acid amide, organic lignite and emulsified asphalt.
9. The high temperature resistant ultra-high density oil-based drilling fluid of claim 1 or 2, wherein: the density of the oil-based drilling fluid reaches 2.4g/cm3～3.0g/cm3And after rolling aging for 16h at 200 ℃, the HTHP FL (180 ℃) is less than or equal to 6 mL.
10. The preparation method of the high-temperature-resistant ultrahigh-density oil-based drilling fluid comprises the following steps:
A. measuring base oil, respectively adding a main emulsifier, an auxiliary emulsifier and a wetting agent, and stirring;
B. adding saline water, and stirring;
C. respectively adding an alkalinity regulator, organic soil and a filtrate reducer, and continuously stirring;
D. adding weighting agent and stirring;
the weighting agent comprises barite and micro manganese powder Micromax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010541781.0A CN111676004A (en) | 2020-06-15 | 2020-06-15 | High-temperature-resistant ultrahigh-density oil-based drilling fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010541781.0A CN111676004A (en) | 2020-06-15 | 2020-06-15 | High-temperature-resistant ultrahigh-density oil-based drilling fluid and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111676004A true CN111676004A (en) | 2020-09-18 |
Family
ID=72435870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010541781.0A Pending CN111676004A (en) | 2020-06-15 | 2020-06-15 | High-temperature-resistant ultrahigh-density oil-based drilling fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111676004A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428155A (en) * | 2009-03-23 | 2012-04-25 | 哈利伯顿能源服务公司 | High performance drilling fluids with submicron-size particles as the weighting agent |
| CN104610946A (en) * | 2014-12-11 | 2015-05-13 | 中国石油大学(北京) | Superfine oil-base drilling fluid used for high temperature high temperatur high pressure superdeep well and preparation method thereof |
| CN109337659A (en) * | 2018-11-07 | 2019-02-15 | 北京石大胡杨石油科技发展有限公司 | A kind of oil resistant base drilling fluid and preparation method thereof |
| CN111269701A (en) * | 2020-02-05 | 2020-06-12 | 古莱特科技股份有限公司 | High-density ultra-low-viscosity oil-based drilling fluid and preparation method and application thereof |
-
2020
- 2020-06-15 CN CN202010541781.0A patent/CN111676004A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428155A (en) * | 2009-03-23 | 2012-04-25 | 哈利伯顿能源服务公司 | High performance drilling fluids with submicron-size particles as the weighting agent |
| CN104610946A (en) * | 2014-12-11 | 2015-05-13 | 中国石油大学(北京) | Superfine oil-base drilling fluid used for high temperature high temperatur high pressure superdeep well and preparation method thereof |
| CN109337659A (en) * | 2018-11-07 | 2019-02-15 | 北京石大胡杨石油科技发展有限公司 | A kind of oil resistant base drilling fluid and preparation method thereof |
| CN111269701A (en) * | 2020-02-05 | 2020-06-12 | 古莱特科技股份有限公司 | High-density ultra-low-viscosity oil-based drilling fluid and preparation method and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| 叶艳: ""超微丰体加重高密度油基钻井液的性能"", 《油田化学》 * |
| 赵睿智: ""加重剂复配对反相乳化钻井液性能影响实验研究"", 《钻采工艺》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2002246768B2 (en) | Invert emulsion drilling fluids and muds having negative alkalinity and elastomer compatibility | |
| CA2792017C (en) | Invert emulsion drilling fluids and methods of drilling boreholes | |
| CN105623628B (en) | Ultrahigh-density oil-based drilling fluid | |
| AU2002246768A1 (en) | Invert emulsion drilling fluids and muds having negative alkalinity and elastomer compatibility | |
| WO2020237818A1 (en) | In-situ emulsification viscosity-increasing system with high phase change point, and application thereof in water-flooding oil reservoirs | |
| WO2003014253A1 (en) | Biodegradable surfactant for invert emulsion drilling fluid | |
| CN112266775A (en) | Preparation of in-situ nano emulsifier and oil reservoir application method | |
| CN103320104A (en) | Water-in-oil-type biodiesel-based drilling fluid and preparation method thereof | |
| CA2271286C (en) | Invert emulsion well drilling and servicing fluids | |
| CN111269701B (en) | High-density ultra-low-viscosity oil-based drilling fluid and preparation method and application thereof | |
| CN112592701B (en) | Oil-based drilling fluid based on chlorinated fatty acid ester and preparation method and application thereof | |
| CN113416272B (en) | Synthesis of nano emulsion plugging agent and oil-based drilling fluid | |
| EP2994516B1 (en) | Additives for oil-based drilling fluids | |
| CN111057527A (en) | High-density oil-based drilling fluid and preparation method thereof | |
| CN107325797B (en) | Low oil-water ratio oil-based drilling fluid and preparation method thereof | |
| US10738230B2 (en) | Invert emulsion drilling fluids | |
| CN111748328B (en) | Ultrahigh-temperature long-acting stable oil-based well completion fluid and preparation method thereof | |
| CN109266319B (en) | Full-oil-based drilling fluid and preparation method and application thereof | |
| CN111676004A (en) | High-temperature-resistant ultrahigh-density oil-based drilling fluid and preparation method thereof | |
| CN114426815A (en) | Oil-based drilling fluid suitable for strong water-sensitive and easily-collapsed stratum and preparation method and application thereof | |
| CN110564387B (en) | Ultrahigh-density environment-friendly gas-to-oil synthetic base drilling fluid and preparation method thereof | |
| WO2009127589A1 (en) | Drilling and well treatment fluids | |
| CN110225956A (en) | Oil based fluids composition for hydrocarbon exploitation application | |
| CN113136181B (en) | Biosynthesis-based drilling fluid and preparation method thereof | |
| CN114032078B (en) | Water-in-oil drilling fluid emulsion and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200918 |
|
| RJ01 | Rejection of invention patent application after publication |