CN106543990A - A kind of drilling fluid for improving mud stone rate of penetration and its preparation method and application - Google Patents
A kind of drilling fluid for improving mud stone rate of penetration and its preparation method and application Download PDFInfo
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- CN106543990A CN106543990A CN201510613627.9A CN201510613627A CN106543990A CN 106543990 A CN106543990 A CN 106543990A CN 201510613627 A CN201510613627 A CN 201510613627A CN 106543990 A CN106543990 A CN 106543990A
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- 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
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
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Abstract
The present invention relates to a kind of drilling fluid for improving mud stone rate of penetration, is made up of the following component in terms of parts by weight：1000 parts of water, bentonite 10-30 parts, soda 0.5-1.5 parts, flow pattern regulator 2-20 parts, fast drilling agent 2-15 parts, polyetheramine 2-8 parts, polymer coating agent 1-6 parts, salt resistance temperature resistance fluid loss additive 2-15 parts, sulfonated phenol formaldehyde resin 20-35 parts and optionally sealing agent 15-35 parts.The speed-raising drilling fluid of the present invention has excellent anti-calcium and anti-salt dirt resistance ability, can effectively improve rate of penetration.The invention further relates to the preparation method of the drilling fluid, comprises the following steps：Bentonite and soda are added in water, maintenance is stood after mixing, polymer flow pattern regulator, polymer coating agent, fast drilling agent, polyetheramine, salt resistance temperature resistance fluid loss additive, sulfonated phenol formaldehyde resin and sealing agent, stand for standby use after mixing is added.The invention further relates to the application of the speed-raising drilling fluid.
Description
Technical field
The present invention relates to drilling technology field, more particularly to a kind of drilling fluid for improving mud stone rate of penetration.This
The bright preparation method and application for further relating to the speed-raising drilling fluid.
Background technology
During oil-gas exploration and development, as well depth is continuously increased, down-hole situation becomes increasingly complex, and Jing is often bored
Meet the extremely strong mudstone stratum of plasticity, its easily imbibition, undergauge, pulping, cause undergauge, bit balling and
Blocked portion Frequent Accidents, have a strong impact on downhole safety drilling and development progress.Bit speed is to affect exploration and development speed
The key factor of degree, improves bit speed, can reduce the occupancy of rig resource, improves drilling benefit, significantly
Drilling cost is reduced, is shortened borehole wall soak time, is prevented stratum generating period from caving in, the effectively solving borehole wall loses
It is steady to wait challenge, and the immersion oil-gas Layer time can be reduced, beneficial to finding and reservoir protec-tion, significantly
Improve recovery ratio.It is problem in the urgent need to address in deep ＆ ultra-deep well drilling process to improve bit speed, therefore
Also more and more higher is required to drilling fluid.
With the development of drilling liquid technology, the speed-raising drilling fluid of many multi-forms, different characteristics is had been developed for
System, drilling fluid can be divided into the compositing characteristic classification of fluid media (medium) and system：Water-base drilling fluid, polymeric alcohol
Drilling fluid, oil base drilling fluid and synthetic base drilling fluid, have received good effect at the scene in application process, but
It is all to there are some shortcomings.Such as, water-base drilling fluid and polyglycol drilling fluid can not prevent bit balling, clearly
Clean poor performance, rate of penetration cannot be significantly improved；Oil base drilling fluid easily pollutes environment, and configuration difficulty is big, into
This height；The cost of synthetic base drilling fluid is very high.
Therefore, the speed-raising drilling fluid of a kind of strong rejection capability and strong lubrication spatter property is developed, suppresses the aquation point of mud stone
It is complicated under bit balling and blocked portion, reduction processing well when scattered, reinforcement wellbore stability, the drilling well of shortening mud stone section
The time of situation, this has for reduction drilling well integrated cost, raising drilling efficiency, expediting exploration development rate
There are extremely important society and economic implications.
The content of the invention
It is an object of the invention to provide a kind of drilling fluid and preparation method thereof for improving mud stone rate of penetration and should
With the drilling fluid has excellent lubricity, inhibition, spatter property and high-temperature stability, and anti-calcium and anti-salt resists
Bad native ability is strong, can effectively improve rate of penetration, has great significance for drilling period is shortened.
According to the present invention, the speed-raising drilling fluid includes the component of following parts by weight meter：
In a preferred embodiment of the invention, the speed-raising drilling fluid includes the component of following parts by weight meter：
According to the present invention, bentonite is preferably sodium bentonite.In terms of 1000 parts by weight water, the bentonite contains
Amount more preferably 18-24 parts.
Soda is preferably natrium carbonicum calcinatum.In terms of 1000 parts by weight water, the soda content more preferably 0.7-0.9
Part.
According to the present invention, polymer flow pattern regulator preferably include low adhesive aggregation anionic cellulose, high adhesive aggregation it is cloudy from
Subbundle is plain, low viscous carboxymethyl cellulose and height glue at least one in carboxymethyl cellulose.With 1000 weight
Number water meter, the polymer flow pattern regulator content more preferably 8-12 parts.Viscosity criterion is with reference to petroleum gas
Industry standard SY5093-92, i.e. 2% solution viscosity are low viscous, 2% solution viscosity less than 200mPaS
It is high viscous, (testing conditions more than 1500mPaS：25 DEG C, Emila viscometers).
In embodiments of the present invention, fast drilling agent preferably includes at least one in polyol ester, more excellent
Choosing includes at least one in polyol esters of fatty acids, most preferably by C3-C6It is prepared by polyhydric alcohol and Oleum Helianthi
The inorganic agent RE for obtaining.In terms of 1000 parts by weight water, the fast drilling agent content more preferably 7-9 parts.
In the present invention, fast drilling agent can increase rock breaking efficiency, and can play raising lubrication and prevent bit balling
Effect.
The preparation method of the inorganic agent RE is：It is 1 by mass ratio:(1.2-5.6) C3-C6Polyhydric alcohol and certain herbaceous plants with big flowers
During flower seed oil is placed in thermometer, stirring paddle, the reactor of reflux condenser, 40 DEG C -60 DEG C are heated with stirring to,
It is 1 to be optionally added into Organic Alcohol mass ratio:(0.12-0.18):(0.02-0.04) penetrating agent and solid acid is urged
Agent, constant temperature stirring 30min-50min, then 120 DEG C -140 DEG C are warming up to, react 5h-8h.Period protects all the time
Nitrogen purging being held, pH value being adjusted with sodium hydroxide solution, holding pH value is between 7-8.
The penetrating agent preferably includes at least one in surfactant, more preferably in anion surfactant
At least one, most preferably including in PAMA, alkylbenzenesulfonate and fatty alcohol sulfate salt
At least one.
The solid acid catalyst preferably includes slaine, the more preferably at least one in phosphate and sulfate.
In certain embodiments of the present invention, polyetheramine preferably includes molecular structural formula and is
H2N-R-[OR’]x-NH2Amine based polymer at least one, wherein, R and R ' independently are C1-C5's
Alkyl, x=1-6.In terms of 1000 parts by weight water, the polyethers amine content more preferably 3.5-4.5 parts.
In some embodiments of the invention, polyetheramine is preferably included in SDPA, NH-1 and D230 at least
It is a kind of.
In the present invention, polymer coating agent preferably includes partially hydrolyzed polyacrylamide (PHPA) (PHPA), preferred institute
The degree of hydrolysis for stating partially hydrolyzed polyacrylamide (PHPA) is 30-70%, and molecular weight is between 300-600 ten thousand.With 1000
Parts by weight water meter, the polymer coating agent content more preferably 2.5-3.5 parts.
According to the present invention, salt resistance temperature resistance fluid loss additive preferably includes in co-polymer of sulfonate fluid loss additive at least one
Kind, the temperature-resistant anti-salt filtrate reducing for more preferably being prepared by the method for Chinese patent 201110300019.4
Agent.In terms of 1000 parts by weight water, the salt resistance temperature resistance fluid loss additive content more preferably 6-8.5 parts.At this
In bright, salt resistance temperature resistance fluid loss additive is mainly used in the saline-alkaline tolerance and high-temperature resistance for improving drilling fluid system, energy
Drilling fluid system is enough made to meet saturation monovalent salt and 200 DEG C of use environment, while system viscosity will not be increased.
In the present invention, sulfonated phenol formaldehyde resin is preferably SMP-1 and/or SMP-2 resins.With 1000 weight portions
Number water meter, the sulfonated phenol formaldehyde resin content more preferably 26.5-29 parts.
In the present invention, sealing agent is preferably Colophonium and/or shielding diverting agent FD-1.With 1000 parts by weight water
Meter, the closure agent content more preferably 23-27.5 parts.
The present invention relates to the preparation method of the speed-raising drilling fluid, comprises the following steps：Bentonite is added in water
And soda, maintenance is stood after mixing, polymer flow pattern regulator, polymer coating agent, fast drilling is added
Agent, polyetheramine, salt resistance temperature resistance fluid loss additive, sulfonated phenol formaldehyde resin and sealing agent, stand for standby use after mixing.
According to the present invention, after bentonite and soda is added, preferred stirring 3-6 hours make which fully mix, more excellent
Select 4-5 hours.The time for standing maintenance is preferably 24-96 hours, more preferably 36-48 hours.Through standing
Maintenance, improves the absorbability of bentonite slurry so as to preferably combined with follow-up raw material.
It is preferred that under conditions of stirring add polymer flow pattern regulator, polymer coating agent, fast drilling agent,
Polyetheramine, salt resistance temperature resistance fluid loss additive, sulfonated phenol formaldehyde resin and sealing agent, and after continuing stirring until mixing
Stand for standby use.
In the preparation method, first add polymer flow pattern regulator and polymer coating agent respectively, for quick
The sequencing of drilling agent, polyetheramine, salt resistance temperature resistance fluid loss additive, sulfonated phenol formaldehyde resin and sealing agent does not have
Especially limit.
In a preferred embodiment of the present invention, the preparation method is comprised the following steps：Add in 1000 parts of water
Enter 10-30 parts bentonite and 0.5-1.5 part soda, stirring stood maintenance 24 hours after 4 hours, and then side is stirred
Mix side and add 2-20 part polymer flow pattern regulators, 2-15 part fast drilling agent, 2-8 part polyetheramines, 1-6 parts
Polymer coating agent, 2-15 part salt resistance temperature resistance fluid loss additives, 20-35 parts sulfonated phenol formaldehyde resin and 15-35 parts
Sealing agent, stand for standby use after continuing to stir 20 minutes.
In further preferred embodiment of the present invention, the preparation method is comprised the following steps：In 1000 parts of water
15-25 parts bentonite and 0.6-1 part soda are added, maintenance 24 hours after stirring 4 hours, then while stirring
Add 5-15 part polymer flow pattern regulators, 2-4 part polymer coating agent 5-10 part fast drilling agent, 3-5 parts
Polyetheramine, 5-10 part salt resistance temperature resistance fluid loss additives, 25-30 parts sulfonated phenol formaldehyde resin and 20-30 parts closure
Agent, stand for standby use after continuing to stir 20 minutes.
According to the present invention, the preparation method is implemented below 150 DEG C, preferred room temperature.
The invention further relates to a kind of boring method, including entering the speed-raising drilling fluid as speed-raising drilling fluid system
Row drilling well.
Speed-raising drilling fluid lubricating, inhibition and the spatter property that the present invention is provided is strong, can improve in wellbore construction
Rate of penetration, it is to avoid the imbibition of mud stone and dispersion, reduces glue rock plasticity, reduces frictional resistance, improve drilling fluid
To clay and drilling cuttings inhibition, bit balling is prevented, with stronger anti-calcium and anti-salt ability and high-temperature stability,
Reservoir damage is reduced, is conducive to mud logging operation.
Description of the drawings
Fig. 1 shows that the speed-raising drilling fluid of the present invention carries out the result of shale expansion rate experiment.
Specific embodiment
The present invention will be described further by specific embodiment below, it should be appreciated that the scope of the present invention
It is not limited to this.
Embodiment 1
25 parts of bentonite and 1 part of soda, stirring 4 are added in 1000 parts of (being parts by weight below) water
Maintenance 24 hours are stood after hour, 5 parts low adhesive aggregation anionic celluloses, 2 parts of hydrolysis are then added while stirring
Spend and resist for PHPA that 30%, molecular weight is 3,000,000,5 parts of inorganic agent RE, 3 parts of SDPA, 5 parts of heatproofs
Salt fluid loss additive, 25 parts of SMP-1 resins and 20 parts of Colophoniumes, stand for standby use after continuing to stir 20 minutes.
Embodiment 2
In 1000 parts of water, add 25 parts of bentonite and 1 part of soda, stirring to stand maintenance 24 hours after 4 hours,
Then 15 parts high adhesive aggregation anionic celluloses, 4 parts of degree of hydrolysis are added to be that 40%, molecular weight is 500 while stirring
Ten thousand PHPA, 10 parts of inorganic agent RE, 4 parts of D230,10 parts of temperature-resistant anti-salt fluid loss additives, 30 parts of SMP-2
Resin and 20 parts of shielding diverting agent FD-1, stand for standby use after continuing to stir 20 minutes.
Embodiment 3
10 parts of bentonite and 0.5 part of soda are added in 1000 parts of water, it is little that stirring stood maintenance 24 after 4 hours
When, then add 2 parts low viscous carboxymethyl celluloses, 2 parts of degree of hydrolysis to be that 70%, molecular weight is 600 while stirring
Ten thousand PHPA, 5 parts of inorganic agent RE, 2 parts of NH-1,5 parts of temperature-resistant anti-salt fluid loss additives, 20 parts of SMP-1
Resin and 20 parts of Colophoniumes, stand for standby use after continuing to stir 20 minutes.
Embodiment 4
20 parts of bentonite and 1.5 parts of soda are added in 1000 parts of water, it is little that stirring stood maintenance 24 after 4 hours
When, then add 10 parts high viscous carboxymethyl celluloses, 5 parts of degree of hydrolysis to be that 40%, molecular weight is while stirring
5000000 PHPA, 8 parts of inorganic agent RE, 6 parts of SDPA, 10 parts of temperature-resistant anti-salt fluid loss additives, 30 parts of SMP-1
Resin and 30 parts of shielding diverting agent FD-1, stand for standby use after continuing to stir 20 minutes.
Embodiment 5
30 parts of bentonite and 1.5 parts of soda are added in 1000 parts of water, it is little that stirring stood maintenance 24 after 4 hours
When, then add 20 parts low adhesive aggregation anionic celluloses, 6 parts of degree of hydrolysis to be that 30%, molecular weight is while stirring
3000000 PHPA, 15 parts of inorganic agent RE, 8 parts of SDPA, 15 portions of temperature-resistant anti-salt fluid loss additives, 35 parts
SMP-2 resins and 35 parts of Colophoniumes, stand for standby use after continuing to stir 20 minutes.
In addition to the experiment condition that the present invention is listed, in embodiment 6-11 and comparative example 1-8, the condition of test experiments is equal
For condition commonly used in the art.The formation temperature simulated as needed designs aging temperature, and standard ageing time is
16h。
Embodiment 6
At depletion 1-2 well 2186.0m, mud stone rock core is obtained 1 cun of core sample to be measured, is soaked in embodiment 1 and carries
For speed-raising drilling fluid in 48 hours, compare the situation of change of rock core expansion rate, experimental result is shown in Fig. 1.
Comparative example 1
At depletion 1-2 well 2186.0m, mud stone rock core is obtained 1 cun of core sample to be measured, is soaked in 48 hours in water,
Compare the situation of change of rock core expansion rate, experimental result is shown in Fig. 1.
Comparative example 2
At depletion 1-2 well 2186.0m, mud stone rock core is obtained 1 cun of core sample to be measured, is soaked in sulphonated polymer mud
(Sulphonated polymer mud system before Jin1-2Jing conversion speed-raising drilling fluid systems is taken from, density is 1.22g/cm3)
In 48 hours, compare the situation of change of rock core expansion rate, experimental result is shown in Fig. 1.
As can be seen from Figure 1, during water acts on mud stone rock core 48 hours, the expansion rate of rock core has exceeded 139%；
During mud stone rock core 48 hours, the expansion rate of rock core has exceeded 55% to sulphonated polymer mud；And the present invention is carried
During fast drilling fluid acts on 48 hours of mud stone rock core, the expansion rate maximum of rock core is not less than 9.5%.
It follows that when the speed-raising drilling fluid of the present invention acts on mud stone rock core, the suction of mud stone can be prevented effectively from
Water expands and dispersion, reduces frictional resistance, prevents bit balling, and then improves the rate of penetration in wellbore construction.
Embodiment 7
The speed-raising drilling fluid that embodiment 1 is provided aging 16 hours in room temperature and 150 DEG C, tests its extreme boundary lubrication
Coefficient and rolling rate of recovery, experimental result are shown in Table 1.
Comparative example 3
By sulphonated polymer mud (taking from the Sulphonated polymer mud system before Jin1-2Jing conversion speed-raising drilling fluid systems)
Aging 16 hours in room temperature and 150 DEG C, its extreme boundary lubrication coefficient and rolling rate of recovery are tested, experimental result is shown in Table
1。
Table 1
As it can be seen from table 1 the speed-raising drilling fluid of the present invention, its extreme boundary lubrication coefficient is up to 0.086-0.093, rock
Bits rolling rate of recovery can reach 90.2%-92.3%, and heat-resisting property is up to 150 DEG C；And the extreme pressure of sulphonated polymer mud
Lubricating coefficient is 0.173-0.175, and landwaste rolling rate of recovery is only 71.5%-72.6%.
It follows that the speed-raising drilling fluid of the present invention has good heat stability and lubricity, brill can be improved
Enter speed, reduce the abrasion of drill bit, increase the service life, be also prevented from balled bit, reduce because drilling tool is disconnected
Split the accident caused with borehole well instability.The speed-raising drilling fluid also has good rejection ability, can suppress mud
Rock hydration swelling simultaneously keeps wellbore stability, improves drilling fluid and suspends and cutting carring ability.
Embodiment 8
By embodiment 1 provide speed-raising drilling fluid be separately added into mass fraction be 0,5%, 10% and 15% it is bad
Soil, stirs 20 minutes, tests its at normal temperatures with 150 DEG C plastic viscosities PV after aging 16 hours and dynamic
Shear force YP, experimental result are shown in Table 2.
Comparative example 4
By sulphonated polymer mud (taking from the Sulphonated polymer mud system before Jin1-2Jing conversion speed-raising drilling fluid systems)
The bad soil that mass fraction is 0,5%, 10% and 15% is separately added into, and is stirred 20 minutes, which is tested in room temperature
Lower and 150 DEG C of plastic viscosities PV and yield value YP after aging 16 hours, experimental result are shown in Table 2.
Table 2
From table 2 it can be seen that the speed-raising drilling fluid of the present invention, when bad native content reaches 15%, the modeling of system
Shape viscosity and yield value just have a larger change, so its dirt resistance ability reaches more than 10%, and it is conventional
When in sulphonated polymer mud, bad native content reaches 10%, the moulding viscosity of system and yield value had one it is larger
Increase, its dirt resistance ability is 5% or so.It follows that the speed-raising drilling fluid of the present invention has good resisting
Bad native ability.
Embodiment 9
The speed-raising drilling fluid that embodiment 2 is provided is separately added into mass fraction for 0,5%, 10%, 15%, 20%
With the NaCl of saturation, stir 20 minutes, test its at normal temperatures with the 150 DEG C tests after aging 16 hours its
Apparent viscosity AV, plastic viscosity PV, yield value YP and drilling fluid API filtration FLAPI, experimental result
It is shown in Table 3.
Comparative example 5
By sulphonated polymer mud (taking from the Sulphonated polymer mud system before Jin1-2Jing conversion speed-raising drilling fluid systems)
The NaCl that mass fraction is 0,5%, 10%, 15%, 20% and saturation is separately added into, is stirred 20 minutes, surveyed
Try its at normal temperatures with 150 DEG C test its apparent viscosity AV after aging 16 hours, plastic viscosity PV, dynamic
Shear force YP and drilling fluid API filtration FLAPI, experimental result is shown in Table 3.
Table 3
From table 3 it can be seen that the speed-raising drilling fluid of the present invention, up to saturation (the i.e. chlorination of its saline-alkaline tolerance
The mass fraction of sodium is for 26%), and the saline-alkaline tolerance of sulphonated polymer mud is 15% or so.It follows that this
Bright speed-raising drilling fluid has good saline-alkaline tolerance.
Embodiment 10
The speed-raising drilling fluid that embodiment 2 is provided is separately added into mass fraction for 0,0.5%, 1.0%, 1.5% and
2.0% CaCl2, stir 20 minutes, test after room temperature and 150 DEG C are aging 16 hours its apparent viscosity AV,
Plastic viscosity PV, yield value YP and drilling fluid API filtration FLAPI, experimental result is shown in Table 4.
Comparative example 6
By sulphonated polymer mud (taking from the Sulphonated polymer mud system before Jin1-2Jing conversion speed-raising drilling fluid systems)
It is separately added into the CaCl that mass fraction is 0,0.5%, 1.0%, 1.5% and 2.0%2, stir 20 minutes,
Room temperature and 150 DEG C test its apparent viscosity AV, plastic viscosity PV, yield value YP and brill after aging 16 hours
Well liquid API filtration FLAPI, experimental result is shown in Table 4.
Table 4
From table 4, it can be seen that the speed-raising drilling fluid of the present invention, its anticalcium ability is up to 2.0%, and conventional
When in sulphonated polymer mud, calcium chloride dosage reaches 1.5%, penalty is serious, and its anticalcium ability is only 1.0% or so.
It follows that the speed-raising drilling fluid of the present invention has good anticalcium ability.
Embodiment 11
The speed-raising drilling fluid that embodiment 1-5 is provided is used for the construction of gold 1-2 well 2186m to 3045m mud stone sections
In operation, drilling depth 859m, average rate of penetration is 1.63h/m, and construction period drilling parameter is without exception,
Greasy property is good, bit balling and blocked portion phenomenon does not occur, and downhole safety, down-hole occur without complex situations,
Substantially increase drilling efficiency.
Comparative example 7
In the mud stone section of golden 1-2 wells 1467m to 2186.0m, using Sulphonated polymer mud system work progress in,
Average rate of penetration is 2.27h/m.
Comparative example 8
The speed-raising drilling fluid that embodiment 1-5 is provided is applied to the mud stone of 6 well of pears, 602 well of 601 well of pears and pears
Section.6 well of pears is 1.51h/m using mud stone section average rate of penetration during conventional Sulphonated polymer mud system, using this
After the speed-raising drilling fluid of invention, the average rate of penetration of identical mud stone section is 1.46h/m).601 well of pears is using normal
During rule Sulphonated polymer mud system, mud stone section average rate of penetration is 1.83h/m, using the speed-raising drilling fluid of the present invention
The average rate of penetration of identical mud stone section is 1.42h/m afterwards.When 602 well of pears is using conventional Sulphonated polymer mud system
Mud stone section average rate of penetration be 1.70h/m, using the present invention speed-raising drilling fluid after identical mud stone section it is average
Rate of penetration is 1.23h/m.
From embodiment 11 and comparative example 7-8, in golden 1-2 wells, the speed-raising drilling fluid and polysulfonate of the present invention
Drilling fluid is compared, and rate of penetration improves 28.2%；6 well of pears, 601 well of pears and 602 well of pears are using the present invention
After speed-raising drilling fluid, the average rate of penetration of identical mud stone section has been respectively increased 3.3%, 22.4% and 27.6%.By
This understands, in the actual exploitation of oil gas, can significantly improve drilling rate using present invention speed-raising drilling fluid, greatly
Width improves drilling efficiency.
Above example and comparative example explanation, the present invention speed-raising drilling fluid have excellent lubricity, inhibition,
Spatter property and high-temperature stability, anti-calcium and anti-salt dirt resistance ability are strong, can effectively improve rate of penetration, prevent drill bit
Mud drum and blocked portion, reduce reservoir damage, and unstressed configuration is conducive to mud logging operation, and construction technology is simple, dosage
It is low, drilling fluid cost is effectively reduced, while drilling fluid is improved to clay and drilling cuttings inhibition, reduces glue rock plasticity,
Avoid the imbibition of mud stone and dispersion, reduce frictional resistance, it is ensured that downhole safety, be particularly suited for water sensitivity it is strong,
The drilling on easily dispersion easily expansion stratum is required.In actual well drilled construction operation, it is ensured that glue mudstone stratum
Wellbore construction safety, significantly shortens drilling period, improves drilling efficiency, accelerates oil-gas exploration and development progress, tool
Have broad application prospects.
Although the present invention is described in detail, it will be understood by those skilled in the art that in spirit of the invention and model
Modification in enclosing will be apparent.However, it should be understood that each side of present invention record, difference
The each several part of specific embodiment and the various features enumerated can be combined or all or part of exchange.Above-mentioned
Each specific embodiment in, those with reference to another embodiment embodiment can suitably with its
Its embodiment is combined, and this is will be to understand by those skilled in the art.Additionally, those skilled in the art
It will be understood that, description above is only the mode of example, it is no intended to limit the present invention.
Claims (10)
1. it is a kind of improve mud stone rate of penetration drilling fluid, including in terms of parts by weight：
2. drilling fluid according to claim 1, it is characterised in that include in terms of parts by weight：
3. drilling fluid according to claim 1 and 2, it is characterised in that the polymer flow pattern regulator
Including low adhesive aggregation anionic cellulose, high adhesive aggregation anionic cellulose, low viscous carboxymethyl cellulose and high viscous carboxylic first
At least one in base cellulose；And/or
The polyetheramine includes that molecular structural formula is H2N-R-[OR’]x-NH2Amine based polymer at least one
Kind, wherein, R and R ' independently are C1-C5Alkyl, x=1-6.
4. the drilling fluid according to any one in claim 1-3, it is characterised in that the fast drilling
Agent includes at least one in polyol ester, preferably includes at least one in polyol esters of fatty acids, more preferably
It is by C3-C6The inorganic agent RE that polyhydric alcohol and Oleum Helianthi are prepared；And/or
The salt resistance temperature resistance fluid loss additive includes at least one in co-polymer of sulfonate fluid loss additive.
5. the drilling fluid according to any one in claim 1-4, it is characterised in that the polymer bag
Included at least one in partially hydrolyzed polyacrylamide (PHPA) by agent, preferably the water of the partially hydrolyzed polyacrylamide (PHPA)
Xie Du is 30-70%, and molecular weight is between 300-600 ten thousand.
6. the drilling fluid according to any one in claim 1-5, it is characterised in that the sulfonated phenolic
Resin is SMP-1 and/or SMP-2 resins.
7. the drilling fluid according to any one in claim 1-6, it is characterised in that the sealing agent is
Colophonium and/or shielding diverting agent FD-1.
8. a kind of method for preparing the drilling fluid as described in any one in claim 1-7, comprises the following steps：
Bentonite and soda are added in water, maintenance is stood after mixing, polymer flow pattern regulator, polymer is added
Coating agent, fast drilling agent, polyetheramine, salt resistance temperature resistance fluid loss additive, sulfonated phenol formaldehyde resin and sealing agent,
Stand for standby use after mixing.
9. method according to claim 8, it is characterised in that methods described is implemented below 150 DEG C.
10. a kind of boring method, including by the drilling fluid described in any one in claim 1-7 or according to right
It is required that drilling fluid prepared by the method described in 8 or 9 carries out drilling well as speed-raising drilling fluid system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107267126A (en) * | 2017-07-03 | 2017-10-20 | 中石化石油工程技术服务有限公司 | A kind of slimhole drilling liquid of suitable coiled tubing drilling and preparation method thereof |
| CN108949127A (en) * | 2018-08-03 | 2018-12-07 | 中国石油集团渤海钻探工程有限公司 | Low solid phase superhigh temperature water base drilling fluid and preparation method thereof |
| CN112218932A (en) * | 2018-05-21 | 2021-01-12 | 米尼克斯Crc有限公司 | Drilling fluid and application thereof |
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| CN112218932B (en) * | 2018-05-21 | 2023-08-22 | 米尼克斯Crc有限公司 | Drilling fluid and application thereof |
| CN108949127A (en) * | 2018-08-03 | 2018-12-07 | 中国石油集团渤海钻探工程有限公司 | Low solid phase superhigh temperature water base drilling fluid and preparation method thereof |
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