CN107556990B - It is a kind of to strengthen the organic salt drilling fluid inhibited with sealing characteristics - Google Patents
It is a kind of to strengthen the organic salt drilling fluid inhibited with sealing characteristics Download PDFInfo
- Publication number
- CN107556990B CN107556990B CN201710853838.9A CN201710853838A CN107556990B CN 107556990 B CN107556990 B CN 107556990B CN 201710853838 A CN201710853838 A CN 201710853838A CN 107556990 B CN107556990 B CN 107556990B
- Authority
- CN
- China
- Prior art keywords
- drilling fluid
- organic salt
- strengthen
- sealing characteristics
- inhibited
- 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.)
- Active
Links
Landscapes
- Sealing Material Composition (AREA)
Abstract
The present invention provides a kind of organic salt drilling fluids strengthened and inhibited with sealing characteristics, inhibit sealing agent, 1-4% nanometers of sealing agents, the fluorocarbon alcohol of 0.2-0.5%, 0.5-2.5% polymeric alcohol, 0.5-1% inhibitor polyetheramine, 1-2% crystalline flake graphite, the superfine light calcium carbonate of 3-5%, 190-260% barite including 2-4% antisaline soil, the soda ash of 0.3-0.5%, 30-60% organic salt, 0.2-0.5% extracting and cutting agent, 0.5-2% fluid loss additive, 1-4%；The above percentage composition is in terms of the mass content of water.It is weaker to the shut-off capacity of mud shale microcrack that the drilling fluid solves conventional organic salt drilling fluid, the undesirable problem of surface hydration rejection, there is good inhibition and seal-off effect under the conditions of boring and meeting shale, mudstone stratum, can satisfy requirement of the unconventional oil and gas well construction to water-base drilling fluid.
Description
Technical field
The invention belongs to oil drilling drilling liquid technology fields, and in particular to a kind of organic salt drilling fluid.
Background technique
On long terms, energy relative shortage will be a great difficult problem that China faces.It is supplied in conventional energy resource increasingly tight
In the case where, rational exploitation and utilization unconventional energy resource resource is extremely urgent, and in unconventional energy resource, shale gas resource reserve is rich
Richness has biggish potentiality to be exploited, however, China is still at an early stage to the development and utilization of shale gas, experience is deficient, technology
Immature, policy is left to be desired.Generally there is the mud shale stratum in China high shale content, stratification development, microcrack to develop
Feature, exploration and development process be easy to cause borehole well instability, " blood " of the drilling fluid as drilling engineering, and the performance of drilling fluid is right
The exploitation success or failure of the unconventional energy resource such as shale gas are most important.
Shale gas drilling well can use oil base drilling fluid and synthetic base drilling fluid, can also use strong rejection capability water-based drilling
Liquid, key are to ensure that wellbore stability, lubrication, the cleaning of anti-sticking and wellbore.Country's shale gas drilling well mainly uses oil base to bore at present
Well liquid for environmental protection pressure and reduces cost of exploration & development, also has part shale gas well using high performance water-based drilling fluid.But
During exploiting the unconventional energy resource such as shale gas, often there is microcrack in mud shale stratum, drilling fluid filtrate is easy pressing
Enter stratum along microcrack under difference effect, the pressure of drilling fluid is transmitted in the earth formation, leads to borehole well instability, this is water-based drilling
Liquid facing challenges.
Organic salt drilling fluid system has good inhibition, is the drilling fluid system quickly grown in recent years, organic salt
Drilling fluid system, filtrate viscosity is high, water activity is low, advantageously reduces capillary pressure, and water is inhibited to penetrate into shale pore throat and microcrack,
Be conducive to wellbore stability.But many shale gas stratum are rich in organic matter, and stratum is caused to have not only hydrophilic but also oleophylic characteristic, table
The performance of face aquation outstanding problem, conventional organic salt drilling fluid system, seal-off effect and inhibition surface hydration can't be complete
Meet the exploitation demand of the unconventional energy resource such as shale gas, application range is restricted.
Summary of the invention
The purpose of the present invention is to provide a kind of organic salt drilling fluid systems strengthened and inhibited with sealing characteristics, widen organic
Salt drilling fluid application range, is suitble to the exploitation of the unconventional energy resource such as shale gas, the drilling fluid system have high inhibition, it is strong block,
The features such as resistant to high temperatures, high density, system environmental protection, moderate cost.
The invention is realized by the following technical scheme:
A kind of strengthen inhibits and the organic salt drilling fluid system of sealing characteristics, including 2-4% antisaline soil, 0.3-0.5%
Soda ash, 30-60% organic salt, 0.2-0.5% extracting and cutting agent, 0.5-2% fluid loss additive, 1-4% inhibit sealing agent, 1-4% nanometers
Sealing agent, the fluorocarbon alcohol of 0.2-0.5%, 0.5-2.5% polymeric alcohol, 0.5-1% polyetheramine, 1-2% crystalline flake graphite, 3-5%
Superfine light calcium carbonate, 190-260% barite；The above percentage composition is in terms of the mass content of water.
The antisaline soil is modified meerschaum or attapulgite；
The organic salt is potassium formate and/or sodium formate；
The extracting and cutting agent is xanthan gum, welan gum or chitosan；
The fluid loss additive is carboxymethyl cellulose or polyanion cellulose；
The inhibition sealing agent is albino bitumen, sulfonated gilsonite；
The nanometer sealing agent is that vinyl acetate-ethylene copolymerization closes object lotion, butylbenzene nanoemulsions, polycarbonate nano cream
One or more of liquid and surface modified nano silicon.
It is that vinyl acetate-ethylene copolymerization of the partial size in 100-200nm closes object that the vinyl acetate-ethylene copolymerization, which closes object lotion,
Lotion；Butylbenzene nanoemulsions are styrene-butadiene emulsion of the partial size in 50-100nm；Polycarbonate nano lotion is partial size in 50-100nm
Polycarbonate emulsion；Surface modified nano silicon is silica of the modified partial size in surface in 50-80nm.
The fluorocarbon alcohol is tetrafluoro butanediol, five fluorine propyl alcohol or hexafluoroisopropanol.
The superfine light calcium carbonate is the superfine light calcium carbonate of 600 mesh, 1250 mesh and 2500 mesh according to 1:1-2:1-2
Ratio compounds.
Beneficial effects of the present invention: it is provided by the invention to strengthen the organic salt drilling fluid inhibited with sealing characteristics, due to benefit
With fluorocarbon alcohol class surfactant, mud shale surface characteristic can be changed, make angle of wetting close to 90 DEG C, reduce organic salt drilling fluid
The interfacial tension between mud shale enhances mud shale surface hydrophobicity oleophobic property, the potent inhibitors such as cooperation polyetheramine, effectively inhibition mud
Shale permeates aquation and surface hydration effect, keeps mud shale green strength, maintains wellbore stability.Using micro-nano solid phase material
Deng closure, consolidating stratum micropore and microcrack, slow pressure transmitting and filtrate intrusion, the firm borehole wall are hindered, cooperation is used in compounding difference
The calcium carbonate superfine powder of partial size further improves its seal-off effect.The drilling fluid system that the present invention is formed has high inhibition, strong closure
The characteristics of, the system is more environmentally friendly, at low cost compared to oil base drilling fluid, therefore can be attempted in shale gas horizontal well.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail, but example is not as to limit of the invention
It is fixed.
Embodiment 1
It is a kind of strengthen inhibit and sealing characteristics organic salt drilling fluid system, including 2% modified meerschaum, 0.3% it is pure
Alkali, 60% potassium formate, 0.2% xanthan gum, 2% carboxymethyl cellulose, 1.5% albino bitumen, 1% vinyl acetate-ethylene copolymerization close
Object lotion (D50 value be 81nm), 1% nano silica (partial size is in 54nm), 0.2% tetrafluoro butanediol, 0.5% polymeric alcohol,
0.5% polyetheramine, 1% crystalline flake graphite, 3% superfine light calcium carbonate, 190% barite；The above percentage composition is with water
Mass content meter.The superfine light calcium carbonate is that 600 mesh, 1250 mesh and 2500 mesh are compounded according to mass ratio 1:1:1.?
Drilling fluid is prepared according to mode of the present invention under high-speed stirred.
Embodiment 2
It is a kind of strengthen inhibit and sealing characteristics organic salt drilling fluid system, including 4% attapulgite, 0.4% soda ash,
30% sodium formate, 0.5% welan gum, 0.5-2% polyanion cellulose, 2% sulfonated gilsonite, 2% vinyl acetate-ethylene copolymerization
Close object lotion (D50 value is 81nm), 1% styrene-butadiene emulsion (D50 value is 90nm), 0.4% 5 fluorine propyl alcohol, 1.5% polymeric alcohol, 1%
Polyetheramine, 2% crystalline flake graphite, 5% superfine light calcium carbonate, 220% barite；The above percentage composition is with the mass content of water
Meter.The superfine light calcium carbonate is that 600 mesh, 1250 mesh and 2500 mesh are compounded according to mass ratio 1:1:2.In high-speed stirred
Under according to mode of the present invention prepare drilling fluid.
Embodiment 3
It is a kind of strengthen inhibit and sealing characteristics organic salt drilling fluid system, including 3% modified meerschaum, 0.5% it is pure
Alkali, 30% potassium formate, 30% sodium formate, 0.4% chitosan, 0.5% carboxymethyl cellulose, 1% polyanion cellulose, 4%
Albino bitumen, 1% vinyl acetate-ethylene copolymerization close object lotion (D50 value is 81nm), 1% styrene-butadiene emulsion (D50 value is 90nm), 1%
Polycarbonate emulsion (D50 value is 65nm), 1% nano silica (partial size 54nm), 0.4% tetrafluoro butanediol, 2.5% gather
Close alcohol, 1% polyetheramine, 2% crystalline flake graphite, 4% superfine light calcium carbonate, 260% barite；The above percentage composition is with water
Mass content meter.The superfine light calcium carbonate is that 600 mesh, 1250 mesh and 2500 mesh are compounded according to mass ratio 1:1:1.
Drilling fluid is prepared according to mode of the present invention under high velocity agitation.
Embodiment 4
It is a kind of strengthen inhibit and sealing characteristics organic salt drilling fluid system, including 2% attapulgite, 0.3% soda ash,
50% potassium formate, 0.3% xanthan gum, 1% carboxymethyl cellulose, 1% polyanion cellulose, 1% sulfonated gilsonite, 1% poly- carbon
Acid esters lotion (D50 value is 65nm), 2% nano silica (partial size 54nm), 0.3% hexafluoroisopropanol, 2.5% polymerization
Alcohol, 0.5% polyetheramine, 1% crystalline flake graphite, 4% superfine light calcium carbonate, 260% barite；The above percentage composition is with water
Mass content meter.The superfine light calcium carbonate is that 600 mesh, 1250 mesh and 2500 mesh are compounded according to mass ratio 1:2:2.?
Drilling fluid is prepared according to mode of the present invention under high-speed stirred.
Embodiment 5
It is a kind of strengthen inhibit and sealing characteristics organic salt drilling fluid system, including 4% modified meerschaum, 0.4% it is pure
Alkali, 40% sodium formate, 0.4% welan gum, 2% carboxymethyl cellulose, 4% albino bitumen, 1% styrene-butadiene emulsion (D50 value be 90nm),
1% nano silica (partial size 54nm), 0.2% tetrafluoro butanediol, 2% polymeric alcohol, 1% polyetheramine, 1% crystalline flake graphite,
5% superfine light calcium carbonate, 260% barite；The above percentage composition is in terms of the mass content of water.The superthin light carbonic acid
Calcium is that 600 mesh, 1250 mesh and 2500 mesh are compounded according to mass ratio 1:2:2.Under high velocity agitation according to of the present invention
Mode prepares drilling fluid.
Comparative example 1
A kind of organic salt drilling fluid system, including 2% modified meerschaum, 0.3% soda ash, 60% potassium formate, 0.2% Huang
Virgin rubber, 2% carboxymethyl cellulose, 1.5% albino bitumen, 0.5% polymeric alcohol, 1% crystalline flake graphite, 190% barite；The above percentage
Content is in terms of the mass content of water.It is identical as 1 dosage of each component of embodiment, only it is not added with polyetheramine, fluorocarbon alcohol and nanometer envelope
Blocking agent.Drilling fluid is prepared according to mode of the present invention under high velocity agitation.
The inhibition of the organic salt drilling fluid system of this patent provides for ease of description strong rejection capability and strong seal-off effect
With the effect of seal-off effect, the inhibition to each embodiment and seal-off effect have carried out measuring respectively.
Inhibition experiment
To the drilling fluid system of embodiment 1-5 according to " the industrial gas oil drilling fluid laboratory GB/T 29170-2012
Test " in shale specified in 23 chapters " shale roll recycling test " roll dispersion rate of recovery experimental method, have rated drilling fluid
The inhibition of system.The core that experiment uses is derived from Sichuan Changning Weiyuan block Longma small stream group stratum, and experiment hot rolls temperature 130
DEG C, rolling rate of recovery data are as shown in table 2.
To the drilling fluid system of embodiment 1-5, using OFITE 150-80-1 high temperature dynamic linear shale expansion instrument, evaluation
Its inhibition.Experiment suppresses artificial core using drilling fluid expansion test bentonite (meeting SY/T 5490-2015), in
25 DEG C of measurement expansion rates.Expansion rate data are as shown in table 2.
Each embodiment shale rolling rate of recovery of table 1
| Embodiment | Comparative example | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Primary recovery | 94.2% | 99.0% | 98.7% | 99.1% | 98.8% | 99.0% |
| Secondary returning yield | 88.2% | 98.7% | 98.7% | 99.0% | 98.8% | 98.7% |
| The rate of recovery three times | 79.2% | 98.5% | 98.5% | 98.8% | 98.5% | 98.6% |
Each embodiment expansion rate data of table 2
| Embodiment | Comparative example | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Expansion rate | 26.1% | 20.1% | 15.0% | 10.3% | 11.2% | 11.9% |
The inhibition that can be seen that embodiment 1-5 from Tables 1 and 2 data is significantly stronger than comparative example, it was demonstrated that this patent
The organic salt drilling fluid system of the strong rejection capability of offer and strong seal-off effect has excellent inhibition.
Seal-off effect evaluation
To the drilling fluid system of embodiment 1-5 according to " the industrial gas oil drilling fluid scene GB/T16783.1-2014
Test part 1: water-base drilling fluid " determine its high temperature and high pressure filter loss, 130 DEG C of experimental temperature.30min filter loss FL
(HTHP) as shown in table 3.
Each embodiment high temperature and high pressure filter loss of table 3
According to " GB/T 29170-2012 industrial gas oil drilling fluid laboratory test ", instrument is blocked using permeability
Measure the seal-off effect of the drilling fluid system of embodiment 1-5.The potsherd that filtration media used is 400 millidarcy of permeability is tested,
Pressure difference 6.9MPa (1000Psi), records 30min filter loss (V by 130 DEG C of experimental temperaturePPT)。
Each embodiment seal-off effect data of table 4
| Embodiment | Comparative example | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| VPPT/mL | 9.0 | 5.4 | 4.8 | 4.2 | 4.8 | 5.0 |
Pressure transportation experiment.Mud shale permeability is extremely low, and micropore is often filled by water flooding, only a small amount of filtrate intrusion,
It can lead to Sidewall Surrounding Rock inner pore pressure to significantly improve, then be superimposed with " pressure transmitting " effect, cause country rock pore pressure to improve, drop
Low effective stress supporting role aggravates borehole wall mechanics destabilization problems.Using high temperature and pressure borehole wall stability imitative experimental appliance, into
Row pressure transportation experiment, test core is put into core holding unit, is pumped on test fluid body and rock core through upstream test solution entrance
End face contact, maintains rock core top pressure 2.0MPa, (drilling fluid), and bottom end initial pressure 1.0MPa (normal saline solution) passes through prison
Measuring pressure delivery rate, to evaluate its sealing characteristics.
5 pressure of table transmits data
Consolidated statement 3-5 data, which can be seen that embodiment 1-5, can strengthen the seal-off effect of organic salt drilling fluid, and the present invention mentions
The organic salt drilling fluid system of the strong rejection capability of confession and strong seal-off effect has outstanding seal-off effect.In conclusion the present invention provides
Strong rejection capability and strong seal-off effect organic salt drilling fluid system inhibition sealing characteristics it is excellent, can further widen organic salt
The application range of drilling fluid system can satisfy requirement of the unconventional oil and gas well construction to water-base drilling fluid.
Above embodiments are only the several preferred embodiments of the present invention chosen, and are not done in any form to the present invention
Limitation, according to the technical essence of the invention, any equivalent modifications to the above embodiments each fall within guarantor of the invention
Within the scope of shield.
Claims (9)
1. a kind of strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that including 2-4% antisaline soil, 0.3-
0.5% soda ash, 30-60% organic salt, 0.2-0.5% extracting and cutting agent, 0.5-2% fluid loss additive, 1-4% inhibit sealing agent, 1-
4% nanometer of sealing agent, the fluorocarbon alcohol of 0.2-0.5%, 0.5-2.5% polymeric alcohol, 0.5-1% polyetheramine, 1-2% crystalline flake graphite,
Superfine light calcium carbonate, the 190-260% barite of 3-5%；The above percentage composition is in terms of the mass content of water；
The fluorocarbon alcohol is tetrafluoro butanediol, five fluorine propyl alcohol or hexafluoroisopropanol.
2. as described in claim 1 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that the antisaline soil
For modified meerschaum or attapulgite；
3. as described in claim 1 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that the organic salt
For potassium formate and/or sodium formate；
4. as described in claim 1 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that the extracting and cutting agent
For xanthan gum, welan gum or chitosan；
5. as described in claim 1 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that the filtrate reducing
Agent is carboxymethyl cellulose or polyanion cellulose；
6. as described in claim 1 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that the inhibition envelope
Blocking agent is albino bitumen, sulfonated gilsonite；
7. as described in claim 1 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that the nanometer envelope
Blocking agent is that vinyl acetate-ethylene copolymerization closes object lotion, butylbenzene nanoemulsions, polycarbonate nano lotion and surface-modified nano two
One or more of silica.
8. as claimed in claim 7 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that the acetic acid second
Alkene-ethylene copolymer lotion is that vinyl acetate-ethylene copolymerization of the partial size in 100-200nm closes object lotion；Butylbenzene nanoemulsions
It is styrene-butadiene emulsion of the partial size in 50-100nm；Polycarbonate nano lotion is polycarbonate emulsion of the partial size in 50-100nm；Table
Face modified manometer silicon dioxide is silica of the modified partial size in surface in 50-80nm.
9. as described in claim 1 strengthen the organic salt drilling fluid inhibited with sealing characteristics, which is characterized in that described ultra-fine light
Matter calcium carbonate is that the superfine light calcium carbonate of 600 mesh, 1250 mesh and 2500 mesh is compounded according to 1:1-2:1-2 ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710853838.9A CN107556990B (en) | 2017-09-20 | 2017-09-20 | It is a kind of to strengthen the organic salt drilling fluid inhibited with sealing characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710853838.9A CN107556990B (en) | 2017-09-20 | 2017-09-20 | It is a kind of to strengthen the organic salt drilling fluid inhibited with sealing characteristics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107556990A CN107556990A (en) | 2018-01-09 |
| CN107556990B true CN107556990B (en) | 2019-07-23 |
Family
ID=60981936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710853838.9A Active CN107556990B (en) | 2017-09-20 | 2017-09-20 | It is a kind of to strengthen the organic salt drilling fluid inhibited with sealing characteristics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107556990B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108251086A (en) * | 2018-02-08 | 2018-07-06 | 西南石油大学 | A kind of water-base drilling fluid suitable for Changning Weiyuan area |
| CN108300433B (en) * | 2018-03-01 | 2020-11-06 | 陕西延长石油(集团)有限责任公司研究院 | Nano composite plugging agent for drilling shale horizontal well and preparation method thereof |
| CN108756809B (en) * | 2018-07-23 | 2020-10-20 | 中南大学 | Hole sealing method for shield tunnel geological exploration drilling |
| US11078395B2 (en) | 2018-12-12 | 2021-08-03 | Chevron Phillips Chemical Company Lp | Wellbore drilling compositions |
| CN110205104B (en) | 2019-05-20 | 2021-10-01 | 西南石油大学 | Strong plugging drilling fluid composition, and preparation method and application thereof |
| CN110819314B (en) * | 2019-09-19 | 2021-09-10 | 中曼石油天然气集团股份有限公司 | Drilling fluid nano plugging agent, preparation method thereof and water-based drilling fluid containing plugging agent |
| CN110951468A (en) * | 2019-10-24 | 2020-04-03 | 上海江南长兴造船有限责任公司 | Ocean high-temperature high-pressure water-based drilling fluid |
| CN111154468B (en) * | 2020-01-06 | 2022-08-26 | 西南石油大学 | Selective water shutoff agent for oilfield water shutoff |
| CN111621271A (en) * | 2020-05-11 | 2020-09-04 | 中国石油大学(北京) | Saturated saline drilling fluid of salt response type intelligent polymer and preparation method thereof |
| CN113136182B (en) * | 2021-04-21 | 2022-07-08 | 西南石油大学 | High-temperature-resistant Pickering emulsion type drilling fluid and preparation method thereof |
| CN113583638B (en) * | 2021-09-13 | 2023-06-23 | 洲际海峡能源科技有限公司 | Calcium-based brine polymer strong-inhibition environment-friendly drilling fluid base fluid, drilling fluid, and preparation and application thereof |
| CN113897187B (en) * | 2021-11-27 | 2022-04-22 | 石家庄华莱鼎盛科技有限公司 | Polymer clean drilling fluid system |
| CN115322759B (en) | 2022-09-14 | 2023-05-09 | 中国石油大学(华东) | Modified nano graphite gel dispersion system, gel dispersion and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226075A (en) * | 2011-04-21 | 2011-10-26 | 中国石油集团渤海钻探工程有限公司 | Formula and preparation method of solid-phase-free strongly-inhibitive drilling fluid |
| CN102250594A (en) * | 2011-04-21 | 2011-11-23 | 中国石油集团渤海钻探工程有限公司 | Formula and preparation method of drilling fluid with strong solid-phase inhibition property |
| CN103923622A (en) * | 2014-04-17 | 2014-07-16 | 中国石油大学(华东) | Multielement compound saltwater drilling fluid |
| CN104232037A (en) * | 2014-08-27 | 2014-12-24 | 克拉玛依市金鑫科技有限公司 | Crack plugging agent for oil-base drilling fluids |
| CN104232035A (en) * | 2013-06-20 | 2014-12-24 | 中国石油化工股份有限公司 | Drilling fluid suitable for low-permeability oil/gas reservoir and preparation method of drilling fluid |
| CN105694830A (en) * | 2016-03-14 | 2016-06-22 | 中国石油集团渤海钻探工程有限公司 | Organic salt drilling fluid |
| CN105754563A (en) * | 2016-03-14 | 2016-07-13 | 中国石油集团渤海钻探工程有限公司 | Organic salt drilling fluid applicable to extended-reach wells |
-
2017
- 2017-09-20 CN CN201710853838.9A patent/CN107556990B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226075A (en) * | 2011-04-21 | 2011-10-26 | 中国石油集团渤海钻探工程有限公司 | Formula and preparation method of solid-phase-free strongly-inhibitive drilling fluid |
| CN102250594A (en) * | 2011-04-21 | 2011-11-23 | 中国石油集团渤海钻探工程有限公司 | Formula and preparation method of drilling fluid with strong solid-phase inhibition property |
| CN104232035A (en) * | 2013-06-20 | 2014-12-24 | 中国石油化工股份有限公司 | Drilling fluid suitable for low-permeability oil/gas reservoir and preparation method of drilling fluid |
| CN103923622A (en) * | 2014-04-17 | 2014-07-16 | 中国石油大学(华东) | Multielement compound saltwater drilling fluid |
| CN104232037A (en) * | 2014-08-27 | 2014-12-24 | 克拉玛依市金鑫科技有限公司 | Crack plugging agent for oil-base drilling fluids |
| CN105694830A (en) * | 2016-03-14 | 2016-06-22 | 中国石油集团渤海钻探工程有限公司 | Organic salt drilling fluid |
| CN105754563A (en) * | 2016-03-14 | 2016-07-13 | 中国石油集团渤海钻探工程有限公司 | Organic salt drilling fluid applicable to extended-reach wells |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107556990A (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107556990B (en) | It is a kind of to strengthen the organic salt drilling fluid inhibited with sealing characteristics | |
| US6715568B1 (en) | Latex additive for water-based drilling fluids | |
| CN108165241B (en) | Super-amphiphobic type composite material and the application in water-base drilling fluid as inhibitor, lubricant and Protective agent for hydrocarbon reservoir | |
| CN101717624B (en) | High-efficient water-based well drilling fluid with fast absorption, strong inhibition and low damage | |
| CN104927805A (en) | High-density water-based drilling fluid applicable to continental deposit sensitive shale formation | |
| CA2743637C (en) | Recyclable low solid content micro-bubble drilling fluid or completion fluid | |
| CN106753287B (en) | A kind of deep-sea and permafrost region probing ultralow temperature drilling fluid | |
| CN104592960B (en) | A kind of both sexes potassium base polymeric alcohol water-base drilling fluid for creeping into shale | |
| CN105038745A (en) | Novel liquid silicon anti-channeling cement slurry used in well cementation | |
| US10308857B1 (en) | Super-amphiphobic composite material and use of the same as inhibitor, lubricant, reservoir protectant, and accelerator in water-based drilling fluids | |
| CN104559969B (en) | A kind of deepwater drilling liquid | |
| CN104357031A (en) | Silicate-cation alkyl glucoside drilling fluid and preparation method thereof | |
| CN103589407A (en) | Low-surface-tension solid-free reservoir protection drilling fluid | |
| CN103194191A (en) | Foam drilling fluid based on nano silicon dioxide material | |
| CN104559976A (en) | Water-based drilling fluid and preparation method thereof | |
| CN107057662A (en) | A kind of water-base drilling fluid sealing agent and its preparation method and application | |
| CN105969323B (en) | A kind of shale gas horizontal well high-density water-based drilling fluid | |
| CN103937469A (en) | Solid-free recyclable micro-foamed drilling fluid and preparation method thereof | |
| CN105018053B (en) | A kind of recyclable micro-foam drilling fluid and preparation method thereof | |
| CN104419389B (en) | Clay shale formation stabilization micro-nano drilling fluid and application thereof | |
| CN105400501A (en) | Drilling fluid with strong wall protecting property for narrow-density windows | |
| CN104449627B (en) | A kind of oil layer protection accelerator and preparation method thereof | |
| CN106398667A (en) | Water-base drilling fluid for hard brittle mud shale, and preparation method thereof | |
| CN101649192A (en) | Recycled solidfree micro-foam drilling fluid or completion fluid | |
| EP1814961B1 (en) | Environmentally friendly water based mud deflocculant/thinner |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210302 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Second Avenue 83, China Petroleum Tianjin building Bohai Drilling Engineering Co., Ltd. Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |