CN101501159A - Improved high performance water-based drilling fluid - Google Patents
Improved high performance water-based drilling fluid Download PDFInfo
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- CN101501159A CN101501159A CNA200780030271XA CN200780030271A CN101501159A CN 101501159 A CN101501159 A CN 101501159A CN A200780030271X A CNA200780030271X A CN A200780030271XA CN 200780030271 A CN200780030271 A CN 200780030271A CN 101501159 A CN101501159 A CN 101501159A
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Abstract
A water-baseddrilling fluid which includes an aqueous fluid, at least one of a weighting agent and a gelling agent, and a lubricant, which includes at least one ester derivative of at least one fatty acid derived from castor oil is disclosed.
Description
The cross reference of related application
According to 35U.S.C. § 119, the application requires in the right of priority of the U.S. Patent Application Serial Number 60/806,747 of submission on July 7th, 2006, and the full content of described U.S. Patent application is combined in this by reference.
Technical field
Embodiment disclosed herein relates generally to the component of wellbore fluid (mud).Particularly, embodiment relates to water-based mud and component thereof.
Background technology
When drilling well in the stratum or completion, because a variety of causes uses various fluids usually in well.The general use of well liquid comprises: lubricated and cooling bit cutting surface when opening (that is, bore and open the target oil-bearing formation) in common drilling well or brill; " landwaste " (the ground synusia that removes owing to the shear action of the tooth on the drill bit) is transported on the face of land; The control formation fluid pressure is to prevent ejection; Keep well stability; With solid suspension in well; Leak-off in the drilling stratum is minimized, and the stratum passed through of stable drilling well; With near the stratafrac the well; With the fluid in the one other fluid replacement well; Well is cleaned; Well is tested; Water horse power is delivered on the drill bit; Fluid is used to settle pkr, abandoned well or preparation abandoned well, and be used in addition well or stratum are handled.
In most of rotary drilling methods, the form of drilling fluid is " mud ", promptly wherein is suspended with solid liquid.Solid plays a part to give required rheological to drilling fluid, and plays a part to increase its density and provide suitable fluid pressure with the bottom at well.
Drilling fluid has the characteristic of thixotropic fluid system usually.That is, when being sheared, for example work as circulation time, they show low viscosity (pumping or with mobile drill bit contact process in occur).Yet when stopping shearing action, fluid should suspend its contained solid to prevent gravity separation.In addition, when drilling fluid is under the shearing condition and during near pourable liquid, it must keep sufficiently high viscosity, all unnecessary particulate matters of artesian well eyeground portion take on the face of land with future.The drilling fluid ingredients also should allow landwaste and other unnecessary granulated material are removed, and perhaps settles from liquid portion in addition.
More and more need to have the drilling fluid that can make the easier rheological curve of drilling well.Drilling fluid with rheological of customization is guaranteed from well efficient as far as possible and remove landwaste effectively, and to avoid forming cutting bed in well, this may cause drill string to be stuck, and other problem.For drilling fluid hydraulics (equivalent circulating density) viewpoint, also need to reduce the required pressure of circulating fluid, thereby reducing that the stratum is exposed to may the pressure break stratum, cause fluid loss and may cause under the excess pressure of well loss.In addition, the curve that improves must prevent the sedimentation or the decline of the weighting agent in the fluid, if this situation takes place, may cause the nonhomogeneous density curve in the circulating fluid system, thereby may cause well control (gas/fluid injection) and hole stability problem (caving in/crackle).
Require required fluid characteristics in order to obtain to satisfy these, therefore easily pumping of fluid needs the pressure of minimum quantity, passes restricted part (restriction) in the circulating fluid system, for example bit nozzle or well-logging probe to force it.In other words, under shear conditions, fluid must have the minimum viscosity of possibility.On the contrary, fluid flow area is big and fluid velocity is slow therein, or exists in the wellblock of low shearing condition, and fluid viscosity must be high as far as possible, to suspend and to carry the landwaste that gets out.This also is applicable to fluid keeps static state in well when, wherein needs landwaste and weighting material are kept suspending to prevent sedimentation.Yet should also be noted that fluidic viscosity is not taken in continues to increase to unacceptable level under the static conditions.In addition when needs once more during circulating fluid, this may cause can the pressure break stratum excess pressure, if the pressure of the abundant circulating fluid system that perhaps claims back surpasses the limit of pump, this may cause lost hours.
Drilling fluid is typically classified according to their body material.Drilling mud can be to have the water-based mud that is suspended in solids wherein, or has in oil emulsification with water or salt solution that forms discontinuous phase and the oil-base mud that is suspended in the solids in the oily external phase.
On coastal waters and landlocked drilling barge and rig, drilling cuttings is transported on the well by drilling fluid.Water-base drilling fluid can be suitable for the drilling well in the stratum of some type; Yet,, need to use oil base drilling fluid for the suitable drilling well in other stratum.For oil base drilling fluid, landwaste except that containing moisture usually, also is coated with the adhesive film or the layer of the oiliness drilling fluid of the inside that may be penetrated into each landwaste.Although use various vibratory screening apparatuss, mechanical separation device and various chemistry and washing technology, this situation also exists.Because to the pollution of environment, no matter on the water still on land, landwaste all can not suitably be abandoned, till removing pollutent.
Thereby in the past, the gentle exploration of most of oil uses water-based mud to carry out.The major cause of this preferential selection is price and Environmental compatibility.Can be easily carry out site disposal in most land place with employed mud with from landwaste with the well of water base mud drilling, and from platform discharging, as long as they satisfy current discharge restriction policy, emission standard and other tolerable limit in many U.S. offshore waters.As mentioned above, make, than the remarkable more expensive traditional oil-base mud of water-base drilling fluid environment is had harm simultaneously by diesel oil or mineral oil.
As a result, to be limited to them are those essential situations in the use of oil-base mud.The selection of oil base wellbore fluid relates to these fluids get well and differ from two specific characters in concrete application the trickle balance.The particularly advantageous performance of oil-base mud is the lubrication qualities of their excellences.When typically in the coastal waters or deep water carry out drilling operation, perhaps when the needs horizontal well, these lubricities allow to get out the well with significant vertical deviation.In the well of these high deflection, moment of torsion on the drill string and resistance (drag) they are significant problems, and reason is the downside that drilling pipe is positioned at well, and when using water-based mud, the risk height that pipe clamp is lived.On the contrary, oil-base mud provides the thin and sliding filter cake that helps to prevent that pipe clamp from living.
Compare with water-based mud, the oil-base mud typical case has excellent oilness, and this makes the reduction of blocking owing to friction resistance of drilling pipe reduce.The lubricating property of drilling mud (oilness) provides unique known means of reducing to rub of being used to.In addition, the use of oil-base mud also is general in hot hole, because compare with water-based mud, the greasy filth slurry shows required rheological usually in wideer temperature range.
Thereby, need give the component or the additive of lubrication to water-based mud.The previous lubricant that uses comprises for example mineral oil, animal and plant oil and ester.Yet the regulation to the increasingly stringent of the biological degradability of the composition of drilling fluid and they has limited the use of other particularly suitable mineral oil gradually.Thereby to having the replacer of better biological degradability, particularly for example the interest of ester is increasing.For example, EP 0 770 661 has described the ester of monocarboxylic acid and monohydroxy-alcohol as the lubricant that is applicable to the water-based drilling liquid system.Yet, only mention that oleic acid 2-ethylhexyl is as the lubricant that is applicable to the aqueous fluids that contains silicate.Yet the use of many known carboxylicesterss in aqueous based systems often causes sizable difficulty.For example, the ester of ester additive decomposes the formation of the component usually cause having blistered remarkable tendency, thereby unfavorable side effect is incorporated in the fluid systems.Similarly, also be used as the sulphonate of the vegetables oil of lubricant in water base and oil based system, particularly, the soya-bean oil sulphonate shows significant foaming, and especially in water-based fluid, this has limited their availability.
Therefore,, comprise the water-based fluid of oilness, exist lasting demand for performance with improvement.
Summary of the invention
In one aspect, embodiment disclosed herein relates to a kind of water-base drilling fluid, described water-base drilling fluid comprises at least a in aqueous fluids, weighting agent and the jelling agent, and lubricant, described lubricant comprises at least a ester derivative of at least a lipid acid that derives from Viscotrol C.
In one aspect of the method, embodiment disclosed herein relates to a kind of method of handling well, described method comprises: at least a with in aqueous fluids, weighting agent and the jelling agent, and mix lubricant, to form water-based wellbore fluid, described lubricant comprises at least a ester derivative of at least a lipid acid that derives from Viscotrol C; With this water-based wellbore fluid of use in drilling operation course.
In a further aspect, embodiment disclosed herein relates to a kind of wellbore fluid, and described wellbore fluid comprises aqueous fluids; At least a in weighting agent and the jelling agent; And lubricant, described lubricant comprises at least a at least a ester derivative in ricinolic acid and sorbitan and the tetramethylolmethane.
From following description and appended claim book, other aspects and advantages of the present invention will be tangible.
Embodiment
Embodiment disclosed herein relates to and is used for the lubricant that uses in water-based wellbore fluid formulations.Particularly, the embodiment of describing herein relates to the lubricant of the ester derivative that is included in the lipid acid of finding in the Viscotrol C.In the following description, many details have been set forth, to provide to understanding of the present disclosure.Yet it will be understood by those skilled in the art that is not having can to implement the disclosure under the situation of these details yet, and can allow from the many variations or the change of described embodiment.
In one embodiment, water-base drilling fluid comprises at least a in aqueous fluids, lubricant and weighting agent and the jelling agent.Lubricant can comprise at least a ester derivative of at least a lipid acid that derives from Viscotrol C.In another embodiment, wellbore fluid can comprise at least a in aqueous fluids, lubricant and weighting agent and the jelling agent, and wherein said lubricant can comprise at least a ricinolic acid ester derivative.One of ordinary skill in the art would recognize that drilling well or wellbore fluid can also comprise various other additives.
Castor oil-based lubricant
In one embodiment, lubricant can form by following method: will derive from least a lipid acid and at least a monobasic, binary, ternary or the polyol reaction of Viscotrol C, to form ester derivative.The natural lipid acid that is present in the Viscotrol C like this can comprise at least a in ricinolic acid, oleic acid, stearic acid, palmitinic acid, dihydroxystearic acid, linolic acid, linolenic acid and the arachic acid.
The main ingredient of Viscotrol C is to have about 89.5% the ricinolic acid than constant abundance.Viscotrol C is the unsaturated hydroxylation lipid acid of 18 carbon lists, i.e. unique natural origin of ricinolic acid.The hydroxyl of ricinolic acid and alkene can allow the improvement of further chemical functionalization and physicals.In addition, it can be nontoxic being present in the ricinolic acid in the Viscotrol C and the ester derivative of other lipid acid, and can be biodegradable easily.Longer chain fatty acid can also provide the derivative with suitable viscosity/rheological profiles.For example, the viscosity index (VI) that has of four esters of tetramethylolmethane and ricinolic acid is 155.
In one embodiment,, thereby natural mixture and at least a monobasic, binary, ternary or the polyvalent alcohol that is present in the lipid acid in the Viscotrol C directly carried out esterification, to form the mixture of aliphatic ester derivatives with Viscotrol C.In another embodiment, can will comprise that any combination of lipid acid of ricinolic acid, oleic acid, stearic acid, palmitinic acid, dihydroxystearic acid, linolic acid, linolenic acid or arachic acid is with at least a monohydroxy-alcohol, dibasic alcohol, trivalent alcohol or polyvalent alcohol esterification.In another embodiment, can be with ricinolic acid and at least a monohydroxy-alcohol, dibasic alcohol, trivalent alcohol or polyol reaction.
In one embodiment, can at least a fatty acid ester and at least a monobasic, binary, ternary or the polyol reaction of Viscotrol C will be derived from.In a specific embodiments, polyvalent alcohol can comprise sorbitan, tetramethylolmethane, polyoxyethylene glycol, glycerine, neopentyl glycol, TriMethylolPropane(TMP) (trimethanolpropane), two-and/or tripentaerythritol etc. at least a.In another embodiment, by with sorbitan or tetramethylolmethane at least a reaction, can form ester derivative.The reaction of at least a lipid acid and at least a monobasic, binary, ternary or polyvalent alcohol can be carried out in the manner known to persons skilled in the art.Such reaction can include but not limited to, for example Fischer (acid catalysis) esterification and acid-catalyzed transesterification.
In one embodiment, the mol ratio of lipid acid and alkoxide component can be at about 1:1 to the scope of about 5:1.In another embodiment, this ratio can be that about 2:1 is to about 4:1.More specifically, this mol ratio relates to the molar equivalent of the carboxylic acid functional of the reaction molar equivalent of available hydroxyl and lipid acid.In one embodiment, mol ratio from the carboxylic acid of at least a lipid acid of Viscotrol C and at least a hydroxyl in sorbitan or the tetramethylolmethane can be at about 1:1 to the scope of about 5:1, and in another embodiment, in from about 2:1 to the scope of about 4:1.
Drilling well/wellbore fluid formulation
In one embodiment, water-base drilling fluid comprises aqueous fluids, derives from the lubricant of Viscotrol C or its component as mentioned above, and at least a in weighting agent and the jelling agent.
The aqueous fluids of wellbore fluid can comprise the mixture of fresh water, seawater, salt solution, water and water-soluble organic compounds, and at least a in their mixture.For example, can prepare aqueous fluids with the mixture of required salt in fresh water.Such salt can include but not limited to, for example alkali metal chloride, oxyhydroxide or carboxylate salt.In the various embodiments of disclosed drilling fluid, described salt solution can comprise seawater, wherein salt concn is lower than the aqueous solution of the salt concn of seawater in this article, or wherein salt concn is higher than the aqueous solution of the salt concn of seawater.The salt that can find in seawater includes but not limited to, the sodium of muriate, bromide, carbonate, iodide, oxymuriate, bromate, formate, nitrate, oxide compound, phosphoric acid salt, vitriol, silicate and fluorochemical, calcium, aluminium, magnesium, potassium, strontium and lithium salts.The salt that can be blended in the given salt solution comprises, be present in the natural sea-water these salt or any other the organic or inorganic dissolved salt any one or multiple.In addition, the salt solution that can be used for drilling fluid disclosed herein can be natural or synthetic, and wherein synthetic salt solution is tending towards much simple on forming.In one embodiment, the density of drilling fluid can be controlled by the salt concn (saturated at the most) that increases in the salt solution.In a specific embodiments, salt solution can comprise the metal for example monovalence of caesium, potassium, calcium, zinc and/or sodium or the halogenide or the carboxylate salt of divalent cation.
In one embodiment, water-base drilling fluid can comprise weighting agent.Be applicable to that weighting agent disclosed herein or density material comprise lead glance, rhombohedral iron ore, magnetite, ferric oxide, ilmenite, barite, spathic iron ore, lazurite, rhombspar, calcite etc.If any, the amount of this material of adding can depend on the desired density of final composition.Typically, add weighting agent, to cause about at the most 24 pounds/gallon drilling fluid density.In one embodiment, many 21 pounds/gallon weighting agent can be added to, and in another embodiment, many 19.5 pounds/gallon weighting agent can be added to.
In another embodiment, water-base drilling fluid can comprise jelling agent.Be applicable to that fluidic jelling agent disclosed herein can comprise, for example, high-molecular weight polymer is the polyacrylamide of partial hydrolysis (PHPA), biological polymer, wilkinite, attapulgite and sepiolite for example.The example of biological polymer comprises guar gum, starch, xanthan gum etc.Such material is through being often used as fluid loss materials, and is used to keep hole stability.
Other additive that can be contained in the wellbore fluid disclosed herein for example comprises, wetting agent, close organic property clay, tackifier, filtration control agent, tensio-active agent, shale control agent, fluid loss agent (filtration reducer), dispersion agent, interfacial tension reducing agent, pH buffer reagent, mutual solvent, thinner (for example xylogen and tannin), thinner and sanitising agent.For those skilled in the art of preparation drilling fluid and mud, the adding of such reagent should be known.
Can also use tackifier, for example water-soluble polymers and polyamide resin.The amount of the tackifier that use in the composition can change according to the end-use of composition.Yet the scope of about 0.1 to 6 weight % is enough for most application usually.Other tackifier comprise by M-I L.L.C. production and selling
With
In some embodiments, the viscosity of displacing liquid is fully high, make described displacing liquid can be in well as the replacement pill of itself.
Multiple filtration control agent can be joined in the drilling fluid disclosed herein, described filtration control agent is selected from the group of being made up of synthetic organic polymer, biological polymer and their mixture usually.Can also be with filtration control agent, for example modification brown coal, polymkeric substance, treated starch and modified-cellulose join in the water-based drilling liquid system of the present invention.In one embodiment, these additives should be selected as having low toxicity, and it is compatible with the common anion drilling fluid additive, described negatively charged ion drilling fluid additive for example is, the polyacrylamide (PHPA) of polyanion carboxymethyl cellulose (PAC or CMC), polyacrylic ester, partial hydrolysis, sulfonated lignin, xanthan gum, these mixture etc.Filtration control agent can comprise for example available from M-I L.L.C.'s (Houston, Texas)
UL Polyanionic Cellulose (PAC), the water-soluble polymers that promptly a kind of minimum of the viscosity that causes water-based mud increases.
In the disclosed in this article various embodiments, thinner can be joined in the drilling fluid, produce to reduce resistance to flow and gel.Typically, the sulfonated lignin, poly-phosphate and the tannin that add sulfonated lignin, brown coal, modification.In other embodiment, can also add low molecular weight polyacrylate as thinner.Other function by the thinner performance comprises: reduces leak-off and filter cake thickness, offsets the effect of salt, water is minimized the effect of drilling stratum, and with the oily emulsification in the water, and in the high-temperature stable mud property.
(produced by M-I L.L.C., and buy from it) liquid polymers is the low-molecular-weight, anionic thinner, and it can be used to make many water-base drilling fluid deflocculates.
Shale suppresses by preventing the clay suction and by providing good cuttings integrity to realize.The shale control agent additive suppresses shale or foundry loam rock clay hydration effectively, and makes the minimizing possibility of bit balling.Shale control agent can comprise ULTRAHIB
TM(produced and sold by M-I L.L.C.), it is the liquid polyamine.Other important additives can comprise ULTRACAP
TM, promptly a kind of for the landwaste coating and suppress clay dispersion and the acrylamide copolymer of overstating and wanting.Shale control agent directly can be joined in the mud system, and to viscosity or not influence of filtration property.Many shale control agents play dual parts as fluid loss agent.Example can include but not limited to all the ACTIGUARD that produced and sold by M-IL.L.C.
TMASPHASOL and CAL-CAP
TMOther fluid loss agent can comprise the polysaccharide-Ji UNITROL that is produced and sold by L.L.C.
TM
In one embodiment, the method of handling well comprises at least a aqueous fluids and the mix lubricant that will comprise in weighting agent and the jelling agent, described lubricant comprises at least a ester derivative of at least a lipid acid that derives from Viscotrol C, to form water-based wellbore fluid.Described water-based wellbore fluid can be used in drilling operation then.Described fluid can be pumped into the bottom of well by drilling pipe downwards, and said fluid comes out by the port in the drill bit for example.In one embodiment, fluid can use with drilling operation arbitrarily, and described drilling operation can comprise for example perpendicular drilling, extended reach drilling and inclination drilling.It should be recognized by those skilled in the art that and to use multiple formulations to prepare water-based drilling mud.Concrete prescription can depend at the state of concrete time drilling well, for example, depends on the degree of depth and/or the formation on stratum.Above-mentioned drilling mud composition can be adapted at the condition of high temperature and high pressure, under those conditions that for example run in deep-well, provides the water-based drilling mud of improvement.
The sample prescription
The following example is used to test the validity of the ester derivative of Castor Oil Fatty Acid disclosed herein as lubricant.In the following example, various additives comprise:
Be a kind of xanthan gum, and
Be a kind of Sclerotium gum tackifier, be used as tackifier; UNITROL
TMIt is a kind of modified polysaccharide that is used for leak-off;
UL Polyanionic Cellulose (PAC), promptly a kind of water-soluble polymers that is designed to control filter loss; ULTRACAP
TM, promptly a kind of low-molecular-weight dry acrylamide copolymer that is designed to provide landwaste coating and clay dispersion inhibition; ULTRAFREE
TM, promptly a kind of anti-accumulation additive that can be used to eliminate bit balling and improve rate of penetration (ROP); ULTRAHIB
TM, promptly a kind of shale control agent, EMI-936, promptly a kind of filtration control agent; EMI-1001, a kind of shale control agent; And EMI-915, i.e. a kind of shale control agent of coating, whole described additives all can be purchased from M-I LLC (Houston, Texas).EMI-919 is used for a kind of with new Castor Oil Fatty Acid ester, it is ester A lubricant relatively, described ester A is the ester by the prepared in reaction between Viscotrol C and the sorbyl alcohol, and can be with trade(brand)name GS-25-62 from U.S. Champion Technologies, 3130 FM 521, Fresno, the Special Products company of Subsidiary Company of TX77245 is purchased.With reference to following table 1, shown the prescription of the water-based fluid that is used for sample 1-2.
Table 1. drilling fluid composition
As shown in following table 2, in 275 ℉ ageings after 16 hours, at the indoor temperature measurement fluid rheology.Various mud prescriptions are to use available from Fann Model 35 viscometer determinings of Fann InstrumentCompany at the rheological property of 120 ℉.Also measure filter loss and oilness.
Table 2. adds 16 hours later rheologicals of thermal aging at 275 ℉
| Sample # | 1 | 2 |
| 600/300 | 100/62 | 107/66 |
| 200/100 | 48/33 | 52/35 |
| 6/3 | 8/6 | 10/8 |
| 10”/10’ | 6/8 | 7/8 |
| PV/YP | 38/24 | 41/25 |
| pH | 7.9 | 8.0 |
| Filter loss | 18.0cc | 10.8cc |
| Oilness 5 '/10 ' | 6.2/6.0 | 7.7/7.5 |
The prescription that is used for the water-based fluid of sample 3-5 is shown in following table 3.
Table 3. drilling fluid composition
As shown in following table 4, after 275 ℉ ageings, measure fluid rheology.Various mud prescriptions are to use available from the Fann Model35 viscometer determining of Fann Instrument Company at the rheological property of 120 ℉.Also measure filter loss and oilness.
Table 4. adds 16 hours later rheologicals of thermal aging at 275 ℉
| Sample # | 3 | 4 | 5 |
| 600/300 | 96/63 | 100/78 | 115/74 |
| 200/100 | 47/31 | 54/37 | 57/37 |
| 6/3 | 7/5 | 8/5 | 10/7 |
| 10”/10’ | 8/11 | 8/10 | 7/8 |
| PV/YP | 33/30 | 22/56 | 41/33 |
| pH | 8/3 | 7.8 | 8.3 |
| Filter loss | 32cc | 22cc | 19cc |
Form the gel mud of lubricant EMI-919 (sample 6) and the 22.5ppb of ester A (sample 7) in base fluid (sample 8), and as shown in table 5, before 150 ℉ ageings 16 hours and afterwards, measure their fluid rheology.Various mud are to use available from Fann Model 35 viscometer determinings of FannInstrument Company at the rheological property of 120 ℉.Also measure filter loss and oilness.
Table 5. adds before the thermal aging and rheological afterwards
| Sample # | Before the 6- | Before the 7- | Before the 8- | After the 6- | After the 7- | After the 8- |
| 600/300 | 69/46 | 59/38 | 52/34 | 83/60 | 64/42 | 60/39 |
| 200/100 | 36/25 | 30/20 | 26/18 | 48/34 | 33/22 | 30/20 |
| 6/3 | 9/8 | 7/6 | 7/6 | 13/12 | 8/7 | 7/6 |
| 10”/10’ | 9/27 | 7/23 | 7/22 | 12/31 | 6/23 | 7/23 |
| PV/YP | 23/23 | 23/21 | 18/16 | 23/37 | 22/20 | 21/18 |
| pH | 7.85 | 7.81 | 8.36 | 8.23 | 7.57 | 8.4 |
| Filter loss (cc) | 12.2 | 11.8 | 12.6 | 12.8 | 12.2 | 12.8 |
| Oilness 1% 5 '/10 ' | 14.8/10.8 | 9.0/7.4 | 32.2/30.1 | -- | -- | -- |
| Oilness 3% 5 '/10 ' | 8.2/4.8 | 6.9/5.3 | 32.2/30.1 | 9.6/7.4 | 8.1/7.2 | 35.8/31.5 |
Compare with known lubricant EMI-919 (sample 1,4,6), the castor oil lubricating agent of modification (sample 2,5,7) shows roughly the same or better usually, and compares with control sample (sample 8), shows the oilness of improvement usually.The mud property of improving comprises fluid rheology, oilness and leak-off.
With reference to following table 6, shown the prescription of the water-based fluid that is used for sample 9-16.Described fluid comprises the various castor-oil plant greases of embodiment disclosed herein, and it is formed by the following various ratios of alcohol with Viscotrol C: and ester B (tetramethylolmethane: Viscotrol C-3:4); C (tetramethylolmethane: Viscotrol C-3:12); D (tetramethylolmethane: Viscotrol C-3:8); E (sorbyl alcohol: Viscotrol C-6:6); And F (sorbyl alcohol: Viscotrol C-3:12).Ester and aforesaid EMI-919, unmodified thick Viscotrol C and unmodified refined caster oil are compared.
Table 6. drilling fluid composition
As shown in following table 6, after 16 hours, measure fluid rheology at 120 ℉ in 275 ℉ ageings.Various mud prescriptions are to use available from Fann Model 35 viscometer determinings of Fann InstrumentCompany at the rheological property of 120 ℉.Also measure filter loss and oilness.
Table 6. is in 275 ℉ ageings after 16 hours, in the rheology of 120 ℉
| Sample # | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 600/300 | 100/62 | 114/76 | 98/62 | 101/63 | 107/66 | 102/62 | 95/60 | 98/62 |
| 200/100 | 48/33 | 64/42 | 49/33 | 49/31 | 52/35 | 47/32 | 47/32 | 49/34 |
| 6/3 | 8/6 | 8/5 | 8/6 | 6/4 | 10/8 | 7/5 | 8/5 | 8/5 |
| 10”/10’ | 6/8 | 5/5 | 6/6 | 4/3 | 7/8 | 5/6 | 5/4 | 5/4 |
| PV/YP | 38/24 | 38/38 | 36/26 | 38/25 | 41/25 | 40/22 | 35/25 | 36/26 |
| pH | 7.9 | 7.9 | 8.0 | 7.9 | 8.0 | 8.0 | 7.5 | 7.7 |
| At the HTHP of 275 ℉ (cc) | 18 | 9 | 12.8 | 25 | 10.8 | 19.6 | 43 | 15 |
| Oilness 5 '/10 ' | 6.2/6.0 | 9.7/10 | 8.5/5.7 | 12.8/12.2 | 7.7/7.5 | 10.0/10.0 | 9.7/10.4 | 8.6/8.6 |
Once more, compare with unmodified Viscotrol C (sample 15-16) with EMI-919 (sample 9), castor oil modified ester derivative (sample 10-13) has shown the performance of improving, for example rheological, filter loss and oilness.In addition, these prescriptions are also stable up to 275 ℉.
The advantage of embodiment disclosed herein can comprise the mixing rheological property of the fluidic raising of described castor oil derivative herein.In addition, the mixing of the ester of castor oil component fatty acids can provide favourable softening and lubricity.Lipid acid is the characteristic that can give favourable water-soluble to the ester derivative of Castor Oil Fatty Acid of the polarity alcohol functional group in the ricinolic acid for example.The increase of this oilness can help to reduce the wearing and tearing of drilling equipment.The ester of Viscotrol C can also show low foaming and the high-temperature stability in water, and this can provide the improvement of extended reach drilling operation.Because normally nontoxic, biodegradable of Viscotrol C and reproducible resource, so its derivative can provide the drilling well lubricant of environmentally compatible.When using in water-based fluid, lubricant disclosed herein can significantly reduce to bubble, this then can help adjusting to viscosity and density.
Although the embodiment to limited quantity of the present invention is described, benefits from of the present disclosure it will be appreciated by those skilled in the art that and to design other embodiment and do not depart from as disclosed scope of the present invention among the application.Therefore, scope of the present invention should only be limited by appended claim.
Claims (20)
1. water-base drilling fluid, it comprises:
Aqueous fluids;
At least a in weighting agent and the jelling agent; With
Lubricant, it comprises at least a ester derivative of at least a lipid acid that derives from Viscotrol C.
2. the described drilling fluid of claim 1, wherein said at least a lipid acid comprise at least a in ricinolic acid, linolic acid, oleic acid, stearic acid, palmitinic acid, dihydroxystearic acid, linolenic acid and the arachic acid.
3. the described drilling fluid of claim 1, wherein said at least a lipid acid comprises ricinolic acid.
4. the described drilling fluid of claim 1, the described ester derivative of wherein said at least a lipid acid is by at least a formation the in monohydroxy-alcohol, dibasic alcohol, trivalent alcohol and the polyvalent alcohol.
5. the described drilling fluid of claim 4, wherein the described ester derivative of at least a lipid acid comprises polynary alcohol radical ester, and wherein said polyvalent alcohol comprises at least a in sorbitan, tetramethylolmethane, Polyglycerine and the polyoxyethylene glycol.
6. the described drilling fluid of claim 5, the described ester derivative of wherein said at least a lipid acid comprise at least a in sorbitan base ester and the tetramethylolmethane base ester.
7. the described drilling fluid of claim 1, wherein said ester derivative are that at least 1: 1 described at least a lipid acid and at least a alcohol form by ratio.
8. the described drilling fluid of claim 6, wherein said ester is at least 2: 1 described at least a lipid acid and at least a formation the in sorbitan and the tetramethylolmethane by ratio.
9. the described drilling fluid of claim 1, described drilling fluid also comprises:
At least a in tackifier, fluid loss agent, shale control agent, filtration control agent and the thinner.
10. method of handling well, described method comprises:
With at least a and mix lubricant in aqueous fluids, weighting agent and the jelling agent, to form water-based wellbore fluid, described lubricant comprises at least a ester derivative of at least a lipid acid that derives from Viscotrol C; With
In drilling operation course, use described water-based wellbore fluid.
11. the described method of claim 10, wherein said at least a lipid acid comprise at least a in ricinolic acid, linolic acid, oleic acid, stearic acid, palmitinic acid, dihydroxystearic acid, linolenic acid and the arachic acid.
12. the described method of claim 11, wherein said at least a lipid acid comprises ricinolic acid.
13. the described method of claim 10, the described ester derivative of wherein said at least a lipid acid is by at least a formation the in monohydroxy-alcohol, dibasic alcohol, trivalent alcohol and the polyvalent alcohol.
14. the described method of claim 13, wherein the described ester derivative of at least a lipid acid comprises polynary alcohol radical ester, and wherein said polyvalent alcohol comprises at least a in sorbitan, tetramethylolmethane, Polyglycerine and the polyoxyethylene glycol.
15. the described method of claim 14, the described ester derivative of wherein said at least a lipid acid comprise at least a in sorbitan base ester and the tetramethylolmethane base ester.
16. the described method of claim 10, wherein said ester derivative are that at least 1: 1 described at least a lipid acid and at least a alcohol form by ratio.
17. the described method of claim 15, wherein said ester is at least 2: 1 described at least a lipid acid and at least a formation the in sorbitan and the tetramethylolmethane by ratio.
18. the described method of claim 10, wherein said wellbore fluid also comprises:
At least a in tackifier, fluid loss agent, shale control agent, filtration control agent and the thinner.
19. a wellbore fluid, it comprises:
Aqueous fluids;
At least a in weighting agent and the jelling agent; With
Lubricant, it comprises at least a at least a ester derivative in ricinolic acid and sorbitan and the tetramethylolmethane.
20. the described drilling fluid of claim 19, described drilling fluid also comprises:
At least a in tackifier, fluid loss agent, shale control agent, filtration control agent and the thinner.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80674706P | 2006-07-07 | 2006-07-07 | |
| US60/806,747 | 2006-07-07 | ||
| US11/772,618 | 2007-07-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101501159A true CN101501159A (en) | 2009-08-05 |
Family
ID=40947343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200780030271XA Pending CN101501159A (en) | 2006-07-07 | 2007-07-06 | Improved high performance water-based drilling fluid |
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| Country | Link |
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| CN (1) | CN101501159A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948684A (en) * | 2010-09-29 | 2011-01-19 | 中联煤层气有限责任公司 | Novel active water fracturing fluid for fracturing of coal bed gas well |
| CN105524604A (en) * | 2014-10-17 | 2016-04-27 | Sk新技术株式会社 | Method for producing drilling fluid from biomass-derived oils |
| CN106190066A (en) * | 2016-07-07 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司 | A kind of water-base drilling fluid being applicable to low well temperature high formation pressure coefficient |
| CN107722952A (en) * | 2017-11-08 | 2018-02-23 | 中国石油大学(北京) | Water-base drilling fluid synthesis ester lubricant and water-base drilling fluid |
| CN109085659A (en) * | 2018-06-29 | 2018-12-25 | 中海石油(中国)有限公司湛江分公司 | A kind of integrated heat insulation test liquid for deep water single layer marine riser |
| CN113429948A (en) * | 2021-08-09 | 2021-09-24 | 长江大学 | Low-friction water-based drilling fluid and preparation method thereof |
| CN113845889A (en) * | 2021-11-25 | 2021-12-28 | 北京培康佳业技术发展有限公司 | Solid lubricant, preparation method and application thereof |
-
2007
- 2007-07-06 CN CNA200780030271XA patent/CN101501159A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948684A (en) * | 2010-09-29 | 2011-01-19 | 中联煤层气有限责任公司 | Novel active water fracturing fluid for fracturing of coal bed gas well |
| CN105524604A (en) * | 2014-10-17 | 2016-04-27 | Sk新技术株式会社 | Method for producing drilling fluid from biomass-derived oils |
| CN106190066A (en) * | 2016-07-07 | 2016-12-07 | 中国石油集团川庆钻探工程有限公司 | A kind of water-base drilling fluid being applicable to low well temperature high formation pressure coefficient |
| CN107722952A (en) * | 2017-11-08 | 2018-02-23 | 中国石油大学(北京) | Water-base drilling fluid synthesis ester lubricant and water-base drilling fluid |
| CN109085659A (en) * | 2018-06-29 | 2018-12-25 | 中海石油(中国)有限公司湛江分公司 | A kind of integrated heat insulation test liquid for deep water single layer marine riser |
| CN113429948A (en) * | 2021-08-09 | 2021-09-24 | 长江大学 | Low-friction water-based drilling fluid and preparation method thereof |
| CN113845889A (en) * | 2021-11-25 | 2021-12-28 | 北京培康佳业技术发展有限公司 | Solid lubricant, preparation method and application thereof |
| CN113845889B (en) * | 2021-11-25 | 2022-02-15 | 北京培康佳业技术发展有限公司 | Solid lubricant, preparation method and application thereof |
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Application publication date: 20090805 |