CN104371676B - Slim hole accelerating drilling fluid and preparation method thereof - Google Patents
Slim hole accelerating drilling fluid and preparation method thereof Download PDFInfo
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- CN104371676B CN104371676B CN201410561802.XA CN201410561802A CN104371676B CN 104371676 B CN104371676 B CN 104371676B CN 201410561802 A CN201410561802 A CN 201410561802A CN 104371676 B CN104371676 B CN 104371676B
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- 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
- C09K8/04—Aqueous well-drilling compositions
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
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- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a slim hole accelerating drilling fluid and a preparation method thereof. The slim hole accelerating drilling fluid is prepared from the following components in parts by mass: 100 parts of continuous liquid phase, 0.1-0.2 part of inorganic base, 0.5-2 parts of accelerator, 0.2-2.0 parts of tackifier, 1-4 parts of filtrate reducer, 0.5-2 parts of lubricant, 2-10 parts of follow-drilling plugging agent and 5-150 parts of weighting agent. The slim hole accelerating drilling fluid has certain wettability reversal capability and is capable of increasing the mechanical drilling speed; besides, the drilling fluid is a soil phase-free low-solid phase drilling fluid, and harm to the stratums can be reduced and the reservoir stratums can be protected; meanwhile, the drilling fluid has excellent lubricity and inhibiting capability, and is capable of stabilizing the wall of a well and preventing the wall of the well from collapse; as a result, drilling accidents can be reduced and the drilling efficiency can be improved.
Description
Technical field
The invention belongs to drilling liquid technology field is and in particular to a kind of slim-hole speed-raising drilling fluid and preparation method thereof.
Background technology
With petroleum works field constantly to backwoodsman extension, production of hydrocarbons expense is continuously increased, in addition international oil
Valency is in for a long time hovers at a low price, and reduces cost has become the only way of petroleum industry；And the higher hyposmosis of development cost,
Extra-low permeability gas field has very important status in China's natural gas reserves with distribution, and hyposmosis, extra-low permeability gas field are opened
Send out the main battle ground having become the construction of natural gas fields.Cost of winning can be greatly reduced using slim-hole speed-raising drilling fluid system, carry
High oil-gas field development economic benefit.
Slimhole drilling can be by following approach reduces cost：Shorten drilling period；Reduce oil pipe, sleeve pipe column dimension, subtract
Few rolled steel dosage；Wellhead assembly is little, simple, reduces cost；Reduce well-repairing work liquid consumption etc..Slim-hole speed-raising drilling fluid system
Can be on the basis of conventional drilling liquid, by changing the wetability of bottom rock so as to mutual reunite and on drill bit, drilling tool
Adhesion weaken, be difficult on drill bit and BHA face adhesion and form bit balling；Meanwhile, also reduce between drilling cuttings mutually
Between absorption, the no longer agglomerating shaft bottom that is deposited on of agglomeration leading to drill bit Repeated Cutting, broken, thus improving rate of penetration, reducing
Drilling cost.
Content of the invention
It is an object of the invention to provide a kind of slim-hole speed-raising drilling fluid and preparation method thereof.Described slim-hole speed-raising drilling well
Liquid is mainly used in marginal oil-gas reservoir, the particularly exploitation of hyposmosis, ultralow permeability gas reservoir.
Slim-hole speed-raising drilling fluid provided by the present invention is grouped into by the group of following mass parts：
Described slim-hole speed-raising drilling fluid can be grouped into by the group of following mass parts further：
Specifically, described slim-hole speed-raising drilling fluid is grouped into by the group of following mass parts：
Or, described slim-hole speed-raising drilling fluid is grouped into by the group of following mass parts：
Making raise speed each component of drilling fluid of slim-hole of the present invention is as proportioning according to mass parts, can be according to when producing
Corresponding ratio increases or reduces.
Above-mentioned Continuous Liquid Phase is water, concretely seawater or fresh water.
Above-mentioned inorganic base is selected from following at least one：NaOH, potassium hydroxide, sodium carbonate, sodium acid carbonate etc., preferably
NaOH.
Above-mentioned speed-raising agent is by polyetheramine, OPEO, turkey red oil and defoamer according to quality parts ratio successively
For 40-60:30-35:2-10:2-5 mixes, and concretely 55:35:7:3.
Wherein, described polyetheramine concretely polyetheramine T-403.
Described OPEO concretely OPEO OP-10.
Described defoamer is selected from following at least one：Isoamyl alcohol, isooctanol etc..
Described tackifier are selected from following at least one：Acrylic acid/acrylamide copolymer, acrylamide/2- acrylamide
Base -2- methyl propane sulfonic acid bipolymer and acrylamide/2- acrylamide-2-methylpro panesulfonic acid/N, N- dimethyl allene
Acid amides terpolymer.
Described fluid loss additive is modified cellulose or modified starch, wherein, described modified cellulose concretely gather cloudy from
Subbundle element, carboxymethylcellulose calcium etc., described modified starch concretely DFD140, DFD-150 etc..
Described lubricant is selected from following at least one：Ethyl hexyl ester of epoxidized soybean oil, epoxy acetyl linolenic acid methyl esters and ring
Oxygen soybean oil, preferably ethyl hexyl ester of epoxidized soybean oil.
Described drill-feeding plugging agent is selected from following at least one：Silica flour, calcium carbonate etc..
Described heavy weight additive is formates, such as potassium formate and/or sodium formate.
The density of described slim-hole speed-raising drilling fluid system is 1.1～1.4g/cm3, concretely 1.1g/cm3Or 1.4g/
cm3.
Described slim-hole speed-raising drilling fluid system is prepared by the method comprising the following steps：Under agitation will
Described inorganic base is added in Continuous Liquid Phase, continues stirring 3～5min, then adds described tackifier under agitation, continue to stir
Mix 15～20min, then add described fluid loss additive under agitation, continue stirring 10～15min, then add institute under agitation
State speed-raising agent, continue stirring 8～10min, then add described lubricant under agitation, continue stirring 8～10min, then exist
Stirring is lower to add described drill-feeding plugging agent, continues stirring 5～10min, finally adds described heavy weight additive under agitation, continues stirring
20～25min, obtains final product described slim-hole speed-raising drilling fluid system.
In said method, the rotating speed of described stirring is all set to 8000～10000 revs/min.
In said method, each component is added in the order described above, it is advantageous that：1. first the pH value of Continuous Liquid Phase is adjusted
To alkalescence, to make drilling fluid materialses play its effect in alkaline environment；2. by these macromolecular complex such as tackifier, fluid loss additive
Matter is initially charged, fully to dissolve under relatively low viscosities；3. it is subsequently adding the lubricant of molecular weight and block up with boring
Leakage agent etc. is it is ensured that its fully dispersed and dissolving.
The present invention compared with prior art has the advantage that：
1st, good rheological characteristic and low plastic viscosity；Avoid slim-hole draw annular clearance little lead to circulate equal yield density inclined
High and press Lou stratum, it is provided simultaneously with suitable shear force, be conducive to the cleaning of well；
2nd, system possesses excellent lubricity, and extreme boundary lubrication coefficient is less than 0.1, and mud cake sticking coefficient is less than 0.1, simultaneously solid
Phase content is low, is conducive to improving rate of penetration, mentions the purpose of speed-raising；
3rd, temperature resistance is good, and temperature resistance ability reaches 150 DEG C；
4th, rejection ability is excellent, and shale recovery ratio is more than 85%, 16h shale linear expansion rate and is less than 20%；
5th, few to reservoir damage, reservoir can be protected, permeability resume figure is more than 90%.
This drilling fluid system possesses certain wettability reversal ability, can improve rate of penetration.There is certain wetting anti-
Turn is exactly that hydrophily strong for rock is changed over oleophylic or between hydrophilic and oleophilic.Because the Main Ingredients and Appearance of rock is silicic acid
Salt, its surface carries negative electrical charge, hydrophilic very capable, when the surfactant (as speed-raising agent) with hydrophilic positive charge is connect with it
When tactile, just absorption arranges in rock surface and regularly, makes rock be changed into oleophylic.Landwaste surface wettability is made to occur to turn
Become, make landwaste be changed into oleophylic by strong hydrophily so as to mutual reunion and the adhesion on drill bit, drilling tool weaken, just
It is difficult adhesion on drill bit and bottom hole assemblies face and form bit balling；Meanwhile, also reduce each other between drilling cuttings
Absorption, the no longer agglomerating shaft bottom that is deposited on of agglomeration leads to drill bit Repeated Cutting, broken, thus improving rate of penetration.
This drilling fluid is no native phase low solids fluid, and when system is increased using formates, solid concentration is low, can subtract
Few injury to stratum, protects reservoir；There is excellent lubricity and rejection ability, energy stabilizing borehole simultaneously, prevent hole collapse,
Reduce the generation of drilling failure, improve drilling efficiency.
Specific embodiment
Below by specific embodiment, the present invention will be described, but the invention is not limited in this.
Experimental technique used in following embodiments if no special instructions, is conventional method；Institute in following embodiments
Reagent, material etc., if no special instructions, all commercially obtain.
Example 1, the preparation of slim-hole speed-raising drilling fluid system
The seawater accurately measuring 400 mass parts is poured in mud cap, is positioned on high speed agitator, and setting rotating speed is
10000 revs/min, add the NaOH of 0.6 mass parts while stirring, continue stirring 5min, then add 4 matter while stirring
The acrylic acid/acrylamide copolymer of amount part, continues stirring 20min；Add the fluid loss additive of 8 mass parts (described while stirring
Fluid loss additive is modified starch DFD150 and carboxymethylcellulose calcium according to 3:1 compounding forms), continue stirring 20min；While stirring
Add the speed-raising agent of 4 mass parts, continue stirring 10min；Add the ethyl hexyl ester of epoxidized soybean oil of 4 mass parts while stirring, continue
Stirring 10min；The superfine silica powder of 20 mass parts while stirring, continues stirring 5min；Add the formic acid of 65 mass parts while stirring
Sodium, continues stirring 20min, obtains final product the slim-hole speed-raising drilling fluid system of density 1.1g/cm3.
Wherein, described speed-raising agent by polyetheramine T-403, OPEO OP-10, turkey red oil and isoamyl alcohol according to
Quality parts ratio is followed successively by 55:35:7:3 mix.
Example 2, the preparation of slim-hole speed-raising drilling fluid system
The seawater accurately measuring 400 mass parts is poured in mud cap, is positioned on high speed agitator, and setting rotating speed is 8000
Rev/min, add the NaOH of 0.6 mass parts while stirring, continue stirring 5min, then add 4 mass parts while stirring
Acrylamide/2- acrylamide-2-methylpro panesulfonic acid bipolymer, continue stirring 20min；Add 10 matter while stirring
(described fluid loss additive is modified starch DFD150 and polyanion cellulose according to 3 to the fluid loss additive of amount part:1 ratio compound and
Become), continue stirring 20min；Add the speed-raising agent of 4 mass parts while stirring, continue stirring 10min；Add 4 mass while stirring
The ethyl hexyl ester of epoxidized soybean oil of part, continues stirring 10min；Add the superfine silica powder of 20 mass parts while stirring, continue stirring
5min；Add the sodium formate of 180 mass parts and the potassium formate of 350 mass parts while stirring, continue stirring 20min, obtain final product density
For 1.4g/cm3Slim-hole speed-raising drilling fluid system.
Wherein, described speed-raising agent by polyetheramine T-403, OPEO OP-10, turkey red oil and isoamyl alcohol according to
Quality parts ratio is followed successively by 55:35:7:3 mix.
Example 3, slim-hole speed-raising drilling fluid system benchmark test
Using the sensible six fast rotation viscometers in Qingdao sea, its stream is tested to the drilling fluid system obtained by example 1 and example 2
Denaturation, the wellbore fluid being obtained is tied up to and is heated to 150 DEG C of heat rolling 16h in roller furnace, test its rheological characteristic after being cooled to normal temperature,
Press filtration vector in its API normal temperature is tested using the sensible ZNS-6 type mud wavter loss meter in Qingdao sea, the data obtaining is such as simultaneously
Table 1.
Wellbore fluid obtained by example 1 and example 2 is tied up to 150 DEG C of heat rolling 16h, after being cooled to room temperature, adopts Fan Shi EP
Its extreme boundary lubrication coefficient tested by extreme boundary lubrication instrument, tests its mud cake using the sensible GNF-1 type HTHP adherometer in Qingdao sea and glues
Attached coefficient, the data obtaining such as table 1.
Table 1 slim-hole speed-raising drilling fluid system rheological characteristic and lubricity evaluation
As shown in Table 1：The slim-hole speed-raising drilling fluid system being obtained by embodiment 1 and embodiment 2 possesses good rheology
Performance.Its plastic viscosity is low, can effectively prevent slim-hole to lead to because annular clearance is little circulate equal yield density height and press Lou stratum；
Possess certain yield value, be conducive to well to clean.API filtration is little simultaneously, greatly reduces filtrate and invades the wound to reservoir
Evil.Possess good lubricity, its extreme boundary lubrication coefficient and the equal very little of mud cake sticking coefficient, can improve its bit speed.
Drilling fluid system obtained by example 1 and example 2 is adopted the sensible NP-1 shale expansion instrument in Qingdao sea measure 16h page
Rock linear expansion rate, the data obtaining such as table 2.
Table 2 slim-hole speed-raising drilling fluid system is evaluated to shale linear expansion rejection ability
As shown in Table 2：The slim-hole speed-raising drilling fluid system being obtained by embodiment 1 and embodiment 2 is to shale linear expansion
The rejection ability all having had.
HARKE-SPCA video contact angle analyzer is adopted to measure body the drilling fluid system obtained by example 1 and example 2
It is the contact angle of filtrate, the data obtaining such as table 3.
Table 3 slim-hole speed-raising drilling fluid system speed-raising merit rating
| System | Contact angle, ° |
| Seawater | 22.8 |
| Example 1 | 47.5 |
| Example 2 | 47.7 |
Filtrate is bigger with the contact angle of rock, and the surface tension of rock is less, and capillary resistance is less, makes drilling fluid more
Plus easily infiltrate in the microcrack being formed during the rock stratum of drill bit impact shaft bottom, huge chip hold down effect can be reduced or eliminated, from
And be conducive to improving rate of penetration.
To the drilling fluid system obtained by example 1 and example 2, according to China National Petroleum professional standard SY/T6540-
2002《Damage of drilling fluid and completion fluid oil reservoir indoor evaluation method》, using the storage of JHDS high-pressure high-temperature dynamic fluid loss instrument appraisal drilling liquid
Layer protected effect, the data obtaining such as table 4.
Table 4 slim-hole speed-raising drilling fluid system reservoir protection merit rating
Can be seen that the slim-hole speed-raising drilling fluid system of present invention preparation from above experimental data, whether
Oil is surveyed or gas is surveyed, and the permeability resume figure of rock core is all higher than 90%, and explanation system has good reservoir protection ability.
Claims (8)
1. a kind of slim-hole speed-raising drilling fluid, is grouped into by the group of following mass parts：
Described Continuous Liquid Phase is water；
Described inorganic base is selected from following at least one：NaOH, potassium hydroxide, sodium carbonate and sodium acid carbonate；
Described speed-raising agent is followed successively by 40- by polyetheramine, OPEO, turkey red oil and defoamer according to quality parts ratio
60:30-35:2-10:2-5 mixes；
Described tackifier are selected from following at least one：Acrylic acid/acrylamide copolymer, acrylamide/2- acrylamido -2-
Methyl propane sulfonic acid bipolymer and acrylamide/2- acrylamide-2-methylpro panesulfonic acid/N, N- DMAA three
Membered copolymer；
Described fluid loss additive is selected from following at least one：Modified cellulose and modified starch；
Described lubricant is selected from following at least one：Ethyl hexyl ester of epoxidized soybean oil, epoxy acetyl linolenic acid methyl esters and epoxy are big
Soya-bean oil；
Described drill-feeding plugging agent is selected from following at least one：Silica flour and calcium carbonate；
Described heavy weight additive is formates.
2. slim-hole according to claim 1 speed-raising drilling fluid it is characterised in that：
Described polyetheramine is polyetheramine T403；
Described OPEO is OPEO OP-10；
Described defoamer is selected from following at least one：Isoamyl alcohol and isooctanol.
3. slim-hole according to claim 1 speed-raising drilling fluid it is characterised in that：Described formates be potassium formate and/or
Sodium formate.
4. slim-hole according to claim 1 speed-raising drilling fluid it is characterised in that：Described slim-hole speed-raising drilling fluid by under
The group stating mass parts is grouped into：
5. a kind of method of the well speed-raising drilling fluid prepared any one of claim 1-4, comprises the steps：
Under agitation described inorganic base is added in described Continuous Liquid Phase, continues stirring 3～5min, then add under agitation
Described tackifier, continue stirring 15～20min, then add described fluid loss additive under agitation, continue stirring 10～15min,
Then add described speed-raising agent under agitation, continue stirring 8～10min, then add described lubricant under agitation, continue to stir
Mix 8～10min, then add described drill-feeding plugging agent under agitation, continue stirring 5～10min, finally add institute under agitation
State heavy weight additive, continue stirring 20～25min, obtain described slim-hole speed-raising drilling fluid,
Described Continuous Liquid Phase is water；
Described inorganic base is selected from following at least one：NaOH, potassium hydroxide, sodium carbonate and sodium acid carbonate；
Described speed-raising agent is followed successively by 40- by polyetheramine, OPEO, turkey red oil and defoamer according to quality parts ratio
60:30-35:2-10:2-5 mixes；
Described tackifier are selected from following at least one：Acrylic acid/acrylamide copolymer, acrylamide/2- acrylamido -2-
Methyl propane sulfonic acid bipolymer and acrylamide/2- acrylamide-2-methylpro panesulfonic acid/N, N- DMAA three
Membered copolymer；
Described fluid loss additive is selected from following at least one：Modified cellulose and modified starch；
Described lubricant is selected from following at least one：Ethyl hexyl ester of epoxidized soybean oil, epoxy acetyl linolenic acid methyl esters and epoxy are big
Soya-bean oil；
Described drill-feeding plugging agent is selected from following at least one：Silica flour, calcium carbonate；
Described heavy weight additive is formates.
6. method according to claim 5 it is characterised in that：The rotating speed of described stirring is all set to 8000～10000 revs/min
Clock.
7. method according to claim 5 it is characterised in that：Described polyetheramine is polyetheramine T403
Described OPEO is OPEO OP-10；
Described defoamer is selected from following at least one：Isoamyl alcohol and isooctanol.
8. method according to claim 5 it is characterised in that：Described formates is potassium formate and/or sodium formate.
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| CN105199684A (en) * | 2015-09-06 | 2015-12-30 | 四川省贝特石油技术有限公司 | Novel high-efficiency organic slurry |
| CN107474805B (en) | 2017-09-20 | 2018-06-12 | 中国石油大学(北京) | Suitable for the speed-raising agent of drilling fluid and water-base drilling fluid and its application |
| CN116083061A (en) * | 2021-11-05 | 2023-05-09 | 中国石油化工股份有限公司 | High-temperature high-density low-solid-phase water-based drilling fluid system and preparation method thereof |
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| CN103897675A (en) * | 2014-01-27 | 2014-07-02 | 中国石油化工集团公司 | Drilling fluid completion fluid for increasing drilling speed and preparation method of drilling fluid completion fluid |
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| US8835363B2 (en) * | 2010-06-16 | 2014-09-16 | Saudi Arabian Oil Company | Drilling, drill-in and completion fluids containing nanoparticles for use in oil and gas field applications and methods related thereto |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Co-patentee after: Jingzhou HANC New-Tech Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation Co-patentee before: Jingzhou HANC New-Tech Research Institute |
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Effective date of registration: 20191211 Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC research institute limited liability company Patentee before: China Offshore Oil Group Co., Ltd. Co-patentee before: Jingzhou HANC New-Tech Research Institute |
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