CN103865498B - The mud cake adhesion lubricant of water-base drilling fluid - Google Patents
The mud cake adhesion lubricant of water-base drilling fluid Download PDFInfo
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- CN103865498B CN103865498B CN201410130863.0A CN201410130863A CN103865498B CN 103865498 B CN103865498 B CN 103865498B CN 201410130863 A CN201410130863 A CN 201410130863A CN 103865498 B CN103865498 B CN 103865498B
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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
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
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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
- C09K2208/28—Friction or drag reducing additives
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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
Abstract
Lubricant is adhered to the invention discloses a kind of mud cake of water-base drilling fluid, mud cake adhesion lubrication improver, 0~4wt% triethanolamine, 0.01~20wt% surfactant and surplus oil comprising 0.1~15wt%；Wherein, the chemical formula of the mud cake adhesion lubrication improver is：(RCO2)xM or (RCO2)x‑y(OH)yR is C in M formulas8~C20Saturated straight chain or branched alkyl, or for C8~C20Unsaturated straight or branched alkyl；M is the+metal ion of divalent ,+trivalent or+4 valencys；X=2~4, y=0~2, and x>y；The HLB of the surfactant>8；The oil is mineral oil, vegetable oil, used oil, the gutter oil through plant oil modified oil or recovery.The mud cake adhesion lubricant of the water-base drilling fluid has extraordinary mud cake adhesion lubricating ability, and mud cake adheres to lubricating coefficient reduced rate up to more than 70%.
Description
Technical field
The present invention relates to oil, Natural Gas Drilling Operation field, more particularly to a kind of mud cake of water-base drilling fluid glues
Attached lubricant.
Background technology
In drillng operation, the energy lost by friction accounts for 70% that various motor devices produce gross energy, so big
Energy loss be enough to govern the engineering success or failure of directional well, horizontal well and extended reach well, therefore, reduction frictional dissipation to drilling well
Engineering is significant.The reduction most common method of frictional dissipation is that lubricant is added into drilling fluid at present.
Lubricant can be divided into four classes according to the lubrication mechanism and lubricant housings in drilling process：The first kind is reduction drilling tool
The extreme-pressure lubricant rubbed between sleeve pipe, it is typically the material containing elements such as S, P, N, B, O, Cl, under the conditions of extreme pressure,
It can be chemically reacted in the metal surface of drilling tool and sleeve pipe, form one layer of fine and close, anti-extreme pressure and with reduction frictional resistance property
Chemical films, and then reduce the friction between drilling tool and sleeve pipe；Equations of The Second Kind is rubbed between reduction drilling tool and open hole wall, prevents pressure
The mud cake adhesion lubricant of poor bit freezing, it is the cunning property that mud cake is improved by improvement of mud cake, and then reduces drilling tool and well
Friction between wall；3rd class is the microballoon that exists between drilling tool and sleeve pipe or the graphite-like thing with interformational sliding property
Matter, the dry friction between drilling tool and sleeve pipe can be changed into rolling friction or sliding friction by it；4th class is fluid drag-reduction agent, it
Typically a kind of high molecular polymer, the radial energy that inhibited drilling fluid fluid is produced by turbulent flow is carried out by the viscoplasticity of itself
Dissipate, and then reduce the frictional resistance of drilling fluid, reduce drilling fluid droop loss, it is final to realize reduction drilling fluid pumping pressure
The purpose of power.Relative to other three kinds of lubricants, the strong point of mud cake adhesion lubricant is that it can preferably prevent and reduce pressure
Poor bit freezing, it is ensured that downhole safety, and also have very big contribution to reduction drilling tool moment of torsion, raising drilling speed.
At present, there is very big defect and deficiency in terms of mud cake adheres to the research of lubrication.Mud cake adhesion lubricant hair
At the initial stage of exhibition, lubricant for drilling fluid is directly mainly used as using crude oil.Till now, directly by the way of crude oil by
Eliminate, instead mainly pitch class and emulsified mineral oil or animals and plants oils.The need for environmental protection, pitch class lubrication
Agent consumption is fewer and fewer.Because emulsification oils can not form effective absorption in mud cake, mud cake is adhered to lubricating ability and be difficult to reach
It is required that.Extreme-pressure lubricant, is also mainly the oils product for adding emulsifying agent and EP agent, although in terms of extreme boundary lubrication
It is ultimate attainment through having accomplished, but it is the same with emulsification oils above-mentioned in mud cake adhesion lubricity, it is impossible to it is effective on mud cake
Absorption, makes mud cake adhere to lubricating ability and does not reach requirement.
The content of the invention
Lubricant is adhered to it is an object of the invention to provide a kind of mud cake of water-base drilling fluid, current drilling fluid lubricating is solved
The problem of agent mud cake adhesion lubricating ability is poor.
A kind of mud cake adhesion lubricant of water-base drilling fluid, is made by following component as mass fraction：
Mud cake adhesion lubrication improver 0.1~15%；
Triethanolamine 0~4%；
Surfactant 0.01~20%
Surplus is oil；
Wherein, the chemical formula of the mud cake adhesion lubrication improver is：
(RCO2)xM or (RCO2)x-y（OH)yM
R is C in formula8~C20Saturated straight chain or branched alkyl, or for C8~C20Unsaturated straight or branched alkyl；
M is the+metal ion of divalent ,+trivalent or+4 valencys；X=2~4, y=0~2, and x>y；
The hydrophilic lipophilic balance (HLB) of the surfactant>8；
Described oil is mineral oil, vegetable oil, used oil, the gutter oil through plant oil modified oil or recovery；The warp
Plant oil modified oil be vulcanized vegetable oil or vegetable oil with methanol, ethanol, propyl alcohol, isopropanol, n-butanol, triethanolamine or
Modified product obtained by ester exchange reaction occurs for polyethylene glycol, or vegetable oil occurs with polyethylene polyamine or diethanol amine
The amidated products of aminolysis reaction generation.
Described used oil is that machine oil has been mixed into moisture, dust, the gold of other miscellaneous oil and component wear generations in use
Category powder etc. impurity and it is discarded after through reclaiming the oil got.
Described gutter oil be by sewer, restaurant etc. reclaim waste cooking oils by filtering, heating, precipitation, point
From etc. the oil that obtains after treatment process.
The M is preferably Mg2+、Ca2+、Sr2+、Ba2+、Cu2+、Zn2+、Co2+、Mn2+、Ni2+、Pb2+、Cr3+、Al3+、Fe3+、
Zr4+Or Ti4+。
The mass fraction of the triethanolamine is preferably 0.01~1%.
The polyethylene polyamine is diethylenetriamine, triethylene tetramine or TEPA.
The surfactant be anion surfactant, cationic surfactant, nonionic surfactant or
Two or more any surfactant of person is with any product than mixing.
The structural formula of the anion surfactant is：
(R-X)(Y)n
R is C in formula8~C20Saturation or undersaturated straight or branched alkyl；
X is C6H4SO3 -、-O-SO3 -、SO3 -、CO2 -Or-O-PO3 2-；
Y is H+、NH4 +, protonation trialkylamine (HNR1R2R3 +, wherein R1、R2、R3For organic group), quaternary ammonium ion or
Alkali metal cation；
When X is C6H4SO3 -、-O-SO3 -、SO3 -Or CO2 -When, n=1；
When X is-O-PO3 2-When, n=2；
The cationic surfactant is C8~C20Saturation or undersaturated straight or branched alkyl substitution quaternary ammonium
Salt or ammonium surfactant；
The nonionic surfactant is C8~C20Saturation or unsaturated alkyl alcohol APEO, C8~C20It is full
And/or unsaturated alkyl phenol polyethenoxy ether, Span series non-ionic surfactants or Tween series non-ionic surface-actives
Agent.
The mud cake adhesion lubrication improver is aluminum stearate.
The mass fraction of the aluminum stearate is 1~10%.
The mineral oil is white oil, kerosene, diesel oil or crude oil；The vegetable oil is peanut oil, soybean oil, corn oil, dish
Seed oil, castor oil, palm oil, olive oil or cottonseed oil.
The preferred boiling point of white oil is higher than 120 DEG C of white oil.
When oil is white oil, lubricant bloom rank is low, heat-resisting property is good for the mud cake adhesion of the water-base drilling fluid.
The mud cake adhesion lubricant of the water-base drilling fluid has extraordinary mud cake adhesion lubricating ability, mud cake adhesion profit
Sliding coefficient reduced rate is up to more than 70%；When the oil in formula is white oil, the lubricant bloom rank is low, also embodies good
Good defoaming function.
Embodiment
(1) the reason for mud cake adhesion lubricating ability of current lubricant for drilling fluid does not reach requirement is analyzed：
Why mud cake adhesion lubricating ability does not reach requirement to emulsification oil lubricant, is because emulsifying oil lubricant not
Effectively it can adsorb on mud cake.Specifically, in the case where well cylinder pressure is higher than strata pressure, the drilling fluid in pit shaft
Generation leak-off, moisture enters stratum, can form one layer of mud cake on the borehole wall in the process.Because oil emulsion is dispersed in drilling fluid
In, its mobility very well, in the presence of positive differential pressure, can accompany drilling fluid and together enter stratum.Mud is flowed through in oil emulsion
During cake, because mud cake is that water is wet, oil is difficult to be adsorbed on mud cake, though emulsifying agent has the effect of the wet upset of water, but such as
Under this big differential pressure conditions, its effective adsorbance is also limited, and thus oil can not be locked on mud cake, causes mud cake to glue
Attached lubricating ability is difficult to improve.In order to improve lubricity, generally require to increase the dosage of oil emulsion, to increase oil on mud cake
Adsorbance, improves the adhesion lubricating ability of mud cake.This is a kind of waste for lubricant, is a kind of pollution for stratum,
Other performances of drilling fluid are influenced whether for drilling fluid.
(2) technology for improving mud cake adhesion lubricant lubricating ability is contemplated：
The mud cake adhesion lubricating ability key for wanting to improve emulsification oil lubricant is how to improve oil on mud cake
Adsorption capacity.A kind of idea is that a kind of material is added in oil emulsion, and this material is with micella in each small emulsified oil droplet
Form or be woven into the form of network and exist, while this material is oleophylic and with the ability that is combined with clay, then,
The oil emulsion of such material is added when flowing through mud cake, this material will be obstructed without entering by the mud cake of semi-transparent film character
Stratum, while this material can be combined with mud cake, participates in the formation of mud cake, this improves the oleophilic properties of mud cake, can have
Effect oil is locked on mud cake, enhances the adhesion lubricating ability of mud cake.
(3) determination of additive：
Through researching and analysing, C8~C20Saturated alkyl or unsaturated alkyl carboxylic acid high-valency metal salt meet property above-mentioned
Can, such as representative compound aluminum stearate therein.Aluminum stearate has oil-soluble, is to connect two on the aluminium of a positive trivalent
To three stearate radicals, hydrophobic side is towards outside, with similar star-like 3-D solid structure.Because aluminum stearate can be in oil
Micella is formed by the interaction of hydrophobic side, 3 D stereo network structure is constituted, and then by oil pinning, so generally stearic acid
Aluminium can be used as oily thickener.Due also to it has certain surface-active, its HLB value is low, so also excellent usually as one kind
Good defoamer.In addition, aluminum stearate contains high-valence cationic aluminium, and clay is generally negatively charged, and this causes aluminum stearate to have
There is the stronger ability combined with clay.Therefore analyzed more than, aluminum stearate meets adheres to adding for lubricant very much as mud cake
Plus agent strengthens adsorption capacity of the oil on mud cake.Similarly, have to aluminum stearate similar structure and performance saturated alkyl or
The carboxylic acid high-valency metal salt of unsaturated alkyl similarly has this ability.
Found in research process, the drilling well made from the additive of emulsification oil lubricant using aluminum stearate or magnesium stearate
Liquid lubricant has one, i.e., when the dosage of aluminum stearate or magnesium stearate reaches to a certain degree, lubricant becomes
It is sticky or even in gelatin.
In order to solve this problem, we have attempted two methods and have been improved, and one is reduction aluminum stearate or hard magnesium
Addition；Two be to add another material to improve the rheological characteristic of lubricant, it has been investigated that, a small amount of triethanolamine plus
The rheological characteristic of lubricant can not only be improved by entering, while also add the stability of lubricant, lubricity to lubricant and
Dispersiveness in slurries also improves.
So, finally with C8~C20Saturated alkyl or unsaturated alkyl carboxylic acid high-valency metal salt be used as emulsification oil lubrication
The additive of agent improves mud cake adhesion greasy property, and improves stability, the rheology of lubricant by auxiliary agent of triethanolamine
Property and the dispersiveness in slurries.Thus the formula that drilling fluid mud cake adheres to lubricant is just formd.
Embodiment 1
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
White oil 96.2%
Aluminum stearate 3.1%
Lauryl sodium sulfate 0.7%
Embodiment 2
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Embodiment 3
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Such as without triethanolamine in this embodiment, lubricant will be in frozen glue shape.
Embodiment 4
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Embodiment 5
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
White oil 94%
Aluminum stearate 3%
OP-10 3%
Embodiment 6
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Embodiment 7
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Embodiment 8
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Embodiment 9
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 80 DEG C, heating stirring 30min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Embodiment 10
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
White oil 94.3%
Magnesium stearate 5%
Lauryl sodium sulfate 0.7%
Embodiment 11
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
The addition of triethanolamine make it that the rheological characteristic of lubricant is improved in this embodiment.
Embodiment 12
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Embodiment 13
According to following formulas, by each material mixing (being calculated in mass percent calculation), and at 120 DEG C, heating stirring 15min is extremely
Solid is completely dissolved, and produces the mud cake adhesion lubricant of water-base drilling fluid.
Mud cake adhesion lubrication method of testing：
The mud that lubricating coefficient analyzer determines the water-base drilling fluid obtained in above-described embodiment is adhered to using fann mud cakes
Cake adheres to the greasy property of lubricant.Brief operation step is as follows：1. the leak-off 30min under 3.5MPa pressure differences, in tester
Drilling fluid cup bottom formed a filter cake；2. adhesion disk is sticked on mud cake under 3.5MPa pressure difference；3. 5 time points are chosen
With moment of torsion looping test moment of torsion, thus evaluate the frictional resistance size between adhesion disk and mud cake, time point of test be respectively 5min,
10min, 15min, 30min, 45min, and it is final using reading during 45min as final moment of torsion reading.
Frictional resistance reduced rate calculation formula is as follows：
Not frictional resistance reduced rate=(do not add the drilling fluid moment of torsion of lubricant-the drilling fluid moment of torsion of addition lubricant)/do not add
The drilling fluid moment of torsion * 100% of lubricant
Evaluation result of the mud cake adhesion lubricant in bentonite slurry in embodiment is shown in Table 1.
Table 1：The mud cake adhesion Evaluation of Lubrication of mud cake adhesion lubricant
Note：aBase is starched：The water of 5% Xia Zi streets swelling sodium soil+0.25% natrium carbonicum calcinatum+surplus, aquation 24h.
bLubricant is more sticky.
It can be seen from result above, the emulsification oil lubricant of aluminum stearate and magnesium stearate addition has extraordinary mud cake
Adhere to lubricity.The addition of triethanolamine has improvement to the rheological characteristic and stability of lubricant, and improves to a certain extent
The mud cake adhesion greasy property of lubricant.The lubricant of section Example also there is preferable mud cake to glue after 150 DEG C of heat rollings
Attached lubricity.After white oil is changed into peanut oil or diesel oil, the lubricity of lubricant is slightly decreased, but still preferably.Emulsifying agent can
To be anion surfactant, cationic surfactant, nonionic surfactant or two or more surfactants
Mixed form.
A live slurry formula is have chosen to evaluate the compatibility of the part mud cake adhesion lubricant in embodiment,
It the results are shown in Table 2.
Table 2：Lubricant starch at the scene in lubricant effect evaluation
Note：aLive base slurry：Base slurry+0.2%+1% ammonium salt compound of big potassium (KPAM)+1% sulfonated phenol formaldehyde resin (SMP-1)+
1% anti-collapse dilution fluid loss additive (SN resins), base slurry is identical with base slurry signified in table 1.
AV-- apparent viscosities；PV-- plastic viscosities；YP-- yield values；FLAPI-- filter pressing loss in standard.
As shown in Table 2, the mud cake adhesion lubricant in embodiment also shows preferable mud cake adhesion profit in starching at the scene
Slip energy, and the mud cake adhesion lubricant of the present invention influences smaller to the rheological property and filtration property of drilling fluid, is resistant to 150 DEG C
High temperature.
Claims (7)
1. the mud cake adhesion lubricant of a kind of water-base drilling fluid, it is characterised in that by following component system as mass fraction
：
Mud cake adhesion lubrication improver 0.1~15%；
Triethanolamine 0~4%；
Surfactant 0.01~20%
Surplus is oil；
Wherein, the chemical formula of the mud cake adhesion lubrication improver is：
(RCO2)xM or (RCO2)x-y(OH)yM
R is C in formula8~C20Saturated straight chain or branched alkyl, or for C8~C20Unsaturated straight or branched alkyl；M for+
The metal ion of divalent ,+trivalent or+4 valencys；X=2~4, y=0~2, and x>y；
The HLB of the surfactant>8；
Described oil is mineral oil, vegetable oil, used oil, the gutter oil through plant oil modified oil or recovery；
It is described through plant oil modified oil be vulcanized vegetable oil or vegetable oil with methanol, ethanol, propyl alcohol, isopropanol, n-butanol,
Modified product obtained by ester exchange reaction, or vegetable oil and polyethylene polyamine or two occur for triethanolamine or polyethylene glycol
The amidated products of aminolysis reaction generation occur for monoethanolamine；
The mass fraction of the triethanolamine is 0.01~1%；
The surfactant be anion surfactant, cationic surfactant, nonionic surfactant or its
In two or more any surfactant with any product than mixing.
The structural formula of the anion surfactant is：
(R-X)(Y)n
R is C in formula8~C20Saturation or undersaturated straight or branched alkyl；
X is C6H4SO3 -、-O-SO3 -、SO3 -、CO2 -Or-O-PO3 2-；
Y is H+、NH4 +, protonation trialkylamine, quaternary ammonium ion or alkali metal cation；
When X is C6H4SO3 -、-O-SO3 -、SO3 -Or CO2 -When, n=1；
When X is-O-PO3 2-When, n=2；
The cationic surfactant is C8~C20Saturation or undersaturated straight or branched alkyl substitution quaternary ammonium salt or
Ammonium surfactant；
The nonionic surfactant is C8~C20Saturation or unsaturated alkyl alcohol APEO, C8~C20Saturation or
Unsaturated alkyl phenol polyethenoxy ether, Span series non-ionic surfactants or Tween series non-ionic surfactants.
2. mud cake as claimed in claim 1 adheres to lubricant, it is characterised in that：The M is Mg2+、Ca2+、Sr2+、Ba2+、Cu2+、
Zn2+、Co2+、Mn2+、Ni2+、Pb2+、Cr3+、Al3+、Fe3+、Zr4+Or Ti4+。
3. mud cake as claimed in claim 1 adheres to lubricant, it is characterised in that：The polyethylene polyamine be diethylenetriamine,
Triethylene tetramine or TEPA.
4. mud cake as claimed in claim 1 adheres to lubricant, it is characterised in that：The mud cake adhesion lubrication improver is tristearin
Sour aluminium.
5. mud cake as claimed in claim 4 adheres to lubricant, it is characterised in that：The mass fraction of the aluminum stearate be 1~
10%.
6. mud cake as claimed in claim 1 adheres to lubricant, it is characterised in that：The mineral oil be white oil, kerosene, diesel oil or
Crude oil；The vegetable oil is peanut oil, soybean oil, corn oil, rapeseed oil, castor oil, palm oil, olive oil or cottonseed oil.
7. mud cake as claimed in claim 6 adheres to lubricant, it is characterised in that：The boiling point of the white oil is higher than 120 DEG C.
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| CN104194739A (en) * | 2014-08-01 | 2014-12-10 | 无棣华信石油技术服务有限公司 | Lubricant for drilling fluid and preparation method thereof |
| CN104194740B (en) * | 2014-08-01 | 2017-01-25 | 中国石油集团渤海钻探工程有限公司 | Oil-based drilling fluid lubricant and preparation method thereof |
| CN105086954B (en) * | 2015-07-28 | 2018-05-04 | 中国石油集团渤海钻探工程有限公司 | Lubricant for drilling fluids and preparation method thereof |
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| CN109761228B (en) * | 2019-03-29 | 2023-09-15 | 广州大学 | Method and device for efficiently stripping two-dimensional material under low Reynolds number |
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| 新型钻井液润滑剂HML-1的配方优选与性能评价;刘保双等;《特种油气藏》;20021031;第9卷(第5期);引言，第1节 * |
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