CN105586022A - Water-in-oil based drilling fluid with high temperature resistance and preparation method thereof - Google Patents
Water-in-oil based drilling fluid with high temperature resistance and preparation method thereof Download PDFInfo
- Publication number
- CN105586022A CN105586022A CN201410564102.6A CN201410564102A CN105586022A CN 105586022 A CN105586022 A CN 105586022A CN 201410564102 A CN201410564102 A CN 201410564102A CN 105586022 A CN105586022 A CN 105586022A
- Authority
- CN
- China
- Prior art keywords
- softening point
- oil
- drilling fluid
- high softening
- point bitumen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides water-in-oil drilling fluid and a preparation method thereof. The drilling fluid comprises an oil phase, a water phase and an additive; the additive comprises high-softening point asphalt composition particles, a promoter, and an emulsifier. Addition of the high-softening point asphalt composition particles is 1-5% of the total mass of the drilling fluid. Average particle size of the high-softening point asphalt composition particles is less than 60 mesh. The drilling fluid solves the problems of plugging and bad leak-off reduction effect, because good particle state and high temperature deformation capability cannot be kept due to extra high oil solubility, when the high-softening point asphalt is applied to oil base drilling fluid. At the same time, when the water content in the water-in-oil drilling fluid is high, the problems that heat stability and electrical stability become bad are solved by means of synergistic effects of the appropriate main emulsifier, the auxiliary emulsifier and the high-softening point asphalt composition particles; the drilling fluid can be widely applied to the deep oil gas drilling operation process.
Description
Technical field
The present invention relates to a kind of water-in-oil based water drilling fluid and preparation method thereof, particularly contain high softening point bitumen composition drilling fluid, belong to oil drilling production technique field.
Background technology
Along with oil-gas exploration is progressively to Deep Development, the chance of boring chance HTHP stratum increases gradually. These are all had higher requirement to drilling fluid system. Compared with water-base drilling fluid, it is strong that oil base drilling fluid has contamination resistance, and lubricity is good, and strong inhibition capability is conducive to keep wellbore stability, can protect to greatest extent oil-gas Layer, is easy to the features such as maintenance. The high-temperature stability that oil base drilling fluid is good and inhibition, make it boring Holes of Complicated Wells, particularly bores in high temperature deep well and water-sensitive strata, and advantage is more obvious. Can effectively protect water sensitivity oil-gas Layer, improve oil and gas production.
Oil base drilling fluid refers to the drilling fluid using oil as continuous phase, is divided into full oil base drilling fluid and invert oil-emulsion drilling fluid. In full oil base drilling fluid, water content is many below 5%. Invert oil-emulsion drilling fluid is made up of oil, water, emulsifying agent, fluid loss additive, equilibrium of activation agent etc., and in drilling fluid, water content is many between 5%-30%. But the water content in the invert mud of high temperature resistance more than 180 DEG C, generally at 5%-10%, seldom exceedes more than 15%. The increase of water content, can make the yield value of system increase, and rheological characteristic improves, and improves the ability of cutting carring. But can make its heat endurance and electrical stability decline. CN1661958 discloses a kind of synthetic base drilling fluid, although can keep good rheological characteristic and electrical stability after aging 16 hours at 150 DEG C, water content is up to 25%. And serviceability under higher temperature and water content has no report.
Although oil base drilling fluid advantage is a lot, while application in high temperature deep well, the high temperature resistance inorganic agent adapting to it has but become one of the factor of its development that restricts. Fluid loss additive in inorganic agent is mainly used in controlling filter loss and the stability of drilling fluid system. For the environment for use of this HTHP, develop one dissolubility in oil base drilling fluid abroad good, the oil-soluble polymers particle fluid loss additive that high-temperature resistance is strong. This polymer beads filters Cheng Zhongneng and forms thin and yielding mud cake in outside falling, interior polymeric composition granule can shutoff formation pore. Though can play, filtration effect falls preferably, expensive.
Asphalt product is compared with special copolymer, cheap and material source is extensive, is one of indispensable important dose of kind of domestic and international modern drilling engineering, have good anti-collapse, lubricated, reduce the comprehensive effectivenesses such as leak-off and high-temperature stable. But general softening point asphalt can cannot meet the high-temperature operation requirement under deep-well because overbating even trickling.
High softening point bitumen refers to that softening point is more than 100 DEG C, the especially pitch more than 120 DEG C. High softening point bitumen is applied because its outstanding high-temperature resistance has more widely. High softening point bitumen can, in the drillng operation in Deep Oil And Gas Exploration field, as the important component part of drilling fluid, can play shutoff, anti-collapse under hot conditions, and stabilizing borehole reduces the effect of filter loss.
But simple high softening point bitumen particle is in the middle of being applied to drilling fluid system time, because particle deformability is relatively limited, viscoplasticity is relatively poor, while existing oil-gas Layer duct irregular, can not embed well its medium problem. And softening point is higher, pitch crisp rigid more obvious, is difficult to play good shutoff and falls filtration effect. CN102304353A and CN103013460A disclose a kind of method that rubber powder, bitumen and calcium carbonate superfine powder are mixed by a certain percentage, pulverized and have prepared pitch particle composition, and what have has also added polymer fiber etc. This method is just mixed rubber powder (He or polymer fiber) and pitch simply, and the two does not form organic whole, is difficult to continue to play a role in wider viscoelastic region.
In addition, pitch used is bitumen, and softening point is wayward or between 80 to 120 DEG C, oily molten thing content, up to more than 98%, while use, is all dissolved in the middle of oil phase high temperature resistant property variation in oil base drilling fluid substantially. Soak swellingly and rubber powder is long-time in the continuous phase of white oil or diesel oil composition, may occur coalescently, destroy the stability of whole drilling fluid system.
Summary of the invention
Be applied in invert mud process and exist oily solubility too high at pitch particle for prior art, in drilling fluid system, lack pitch particle effective shutoff is carried out in duct, stratum and crack, its filter loss is increased, the problems such as suspending power and high-temperature resistance variation, the invention provides and a kind ofly join in oil base drilling fluid by the composition grain of high softening point bitumen and rubber powder being made to special construction, and add suitable emulsifying agent, both some can be dissolved into play in drilling fluid and carried sticky cutting and lubrication to make high softening point bitumen particle, can in drilling fluid, keep again certain graininess, play good shutoff, anti-collapse and fall filtration effect, improved the large rock-carrying ability of drilling fluid simultaneously. the problems referred to above that exist when the invention solves high softening point bitumen particle and applying in oil base drilling fluid.
One aspect of the invention is to provide a kind of high temperature water-in-oil drilling, wherein contains a kind of composition grain that high softening point bitumen is wrapped in to rubber grain outside, and the content of composition grain is 1% ~ 5% of drilling fluid gross mass. Wherein the softening point of high softening point bitumen is 120～220 DEG C. In composition grain, in mass fraction, containing 50～80 parts of high softening point bitumens, 20～50 parts of rubber grains.
The present invention is to provide a kind of high temperature water-in-oil drilling on the other hand, comprises profit base fluid and additive. Wherein profit base fluid is by volume: oil phase: water=90:10～60:40. Additive comprises high softening point bitumen composition grain, and wherein high softening point bitumen composition grain addition accounts for 1% ~ 5% of drilling fluid gross mass. The average grain diameter of bituminous composition particle is for being less than 60 orders.
Additive, in profit base fluid quality, comprises following component:
(1) primary emulsion: 0.5～5%
(2) auxiliary emulsifying agent: 0.1～3%
(3) organoclay: 1～3%
(4) properties modifier: 1～5%
Wherein properties modifier comprises modification high softening point bitumen composition grain, and wherein modification high softening point bitumen composition grain addition accounts for 1% ~ 5% of drilling fluid gross mass; Modification high softening point bitumen composition grain, by mass parts, comprises following component: 50～80 parts of (1) high softening point bitumens; (2) 20～50 parts of rubber powder particles.
In drill-in fluid, also can add heavy weight additive, as barite, lime stone or their mixture, make drilling fluid density reach 1.50～2.10g/cm3。
In described drilling fluid, oil phase can be diesel oil, biodiesel, white oil, plant wet goods, preferably white oil. Water is the calcium chloride water of 10～30% concentration. Primary emulsion is higher fatty acid amide series of surfactants, as one or more in lauroyl diethanolamine, oleamide, oleoyl diethanol amine, cocounut oil acyl diethanol amine. Auxiliary emulsifying agent can be the surfactant of Span series, as one or more in Span-60, Span-80, Span-85. Also can be polyoxyethylene carboxylate series, as one or more in rosin acid polyoxyethylene ester, polyoxyethylene oleic acid ester, polyoxyethylene stearic acid ester. Heavy weight additive can be barite, lime stone, or their mixture.
Wherein, described high softening point bitumen, its softening point is 120 ~ 220 DEG C. High softening point bitumen can be asphalt and/or coal tar pitch, is preferably the mixture of asphalt and coal tar pitch, and wherein asphalt accounts for 30%～70% of high softening point bitumen quality, and coal tar pitch accounts for 70%～30% of high softening point bitumen quality. Wherein asphalt is one or more mixing in oxidized asphalt, solution-off pitch or bitumen, and coal tar pitch is the product that coal tar obtains after middle temperature or high temperature distillation.
Described rubber powder particle is one or more in butyl rubber rubber powder, acrylonitrile-butadiene rubber rubber powder, neoprene rubber powder, butadiene-styrene rubber rubber powder or fluorine-containing rubber rubber powder.
In bituminous composition particle of the present invention, preferably add promoter, by mass parts, promoter addition is 1～10 part, wherein promoter is one or more in sulfate, quaternary ammonium salt or lignosulfonates, and wherein sulfate is one or more in modification bay alcohol radical sodium sulphate, secondary alcohol groups sodium sulphate and mixed fatty alcohol sodium sulphate etc.; Quaternary ammonium salt is one or more in DTAC, hexadecyltrimethylammonium chloride, OTAC etc.; Lignosulfonates are sodium lignin sulfonate or calcium lignosulfonate.
Drilling fluid preparation method of the present invention comprises following process:
(1) prepare high softening point bitumen composition grain;
(2) prepare drilling fluid:
In above-mentioned preparation process (1), the preparation process of high softening point bitumen composition grain is as follows:
High softening point bitumen is heated to molten state, is evenly sprayed onto on preheated rubber powder particle, leave standstill infiltration a period of time, vibrate pulverizing after freezing in vibratory sieve, wherein vibratory sieve sieve aperture is for being greater than 60 mesh standard sieves. Lower part of screen is divided and is the bituminous composition particle obtaining.
In the inventive method, described rubber powder particle can be commercially available waste-tyre rubber-powder product, the composition of the preferred asphalt of high softening point bitumen and coal tar pitch. The mass ratio of high softening point bitumen and rubber powder particle is 4:1～1:1.
In the inventive method, spray high softening point bitumen liquid and can adopt the equipment with spraying function, as watering can, spraying machine, sprayer etc., in sprinkling process, can material be stirred or be mixed and stirred, make the high softening point bitumen liquid of melting be dispersed in rubber powder particle surface.
In the inventive method, 50～120 DEG C of described rubber powder particle preheat temperatures, 0.5～2 hour preheating time; Described standing time of penetration is 0.5 ~ 5 hour, leaves standstill infiltration at 100～200 DEG C of temperature. Then cool to room temperature.
In the inventive method, freezing condition is: cryogenic temperature is-10～-50 DEG C, preferably-20 ~-40 DEG C, and cooling time 5～24 hours, preferably 10 ~ 18 hours. Vibration grinding time is 1～100s, preferably 10～50s.
In the inventive method, preferably in preparation process, add promoter, promoter need add before vibration is pulverized.
The step of preparing drilling fluid described in step (2), comprise: measure base oil and calcium chloride water with graduated cylinder, volume ratio preparation profit base fluid on request, adds primary emulsion, high-speed stirred 10～30 minutes at normal temperatures, add organoclay, stir 5～10 minutes, then add auxiliary emulsifying agent and high softening point bitumen composition grain, continue to stir 20～40 minutes, add heavy weight additive, drilling fluid density is adjusted to desired value, obtain stable invert mud.
The present invention compared with prior art, has the following advantages:
(1), in the time preparing high softening point bitumen composition, introduced rubber powder as modifier. In preparation process, adopt and first high softening point bitumen is evenly sprayed to rubber powder granule surface, and then carry out freezing and vibration pulverize method, can form taking rubber powder granule as nuclear phase, modified pitch particle taking high softening point bitumen as shell, pitch and rubber powder are organically combined as a whole, have not only improved the high temperature resistant property of particle, also increase its deformability simultaneously, it is more easily embedded in use and stitch, played the effect that reduces well high temperature and high pre ssure filtration. In preparation process, adopt the method for spraying simple, and easily evenly; Standing infiltration a period of time can make to be combined better between high softening point bitumen and rubber powder particle at a certain temperature.
(2) high softening point bitumen that the present invention adopts is the high softening point bitumen of softening point more than 120 DEG C, has improved its high-temperature resistance in down-hole application. Adopt asphalt and the composite method of coal tar pitch can regulate the molten thing content of oil of pitch particle, because the solubility of coal tar pitch in oil is about 60～80%, and asphalt solubility is more than 98%. In the time that this high softening point bitumen particle is used for oil base drilling fluid, both some can be dissolved in drilling fluid oil phase and play and carry sticky cutting and lubrication, can in drilling fluid, keep again certain graininess, simultaneously, the number of the molten thing content of coal tar can regulate the size of particle to a certain extent, play better shutoff, anti-collapse and fall filtration effect, improved the large rock-carrying ability of drilling fluid. The present invention is taking rubber powder granule as nuclear phase, and the modified pitch particle taking composite high softening point bitumen as shell, in the time being applied to oil base drilling fluid, without adding again the additive such as lubricant and Ti Qie agent, simplify the step of drilling fluid preparation, saved cost, played the multiplex effect of potion.
(3) adopt asphalt and coal tar pitch to carry out composite, reduced the difficulty while pulverizing, the promoter simultaneously adding, is with surface-active pressed powder, can prevent that pitch particle is bonded together; On the other hand, join in drilling fluid, these surfactants can make pitch particle be distributed to uniformly and stably in the middle of drilling fluid system, increase the serviceability of drilling fluid. By selecting suitable main and auxiliary emulsifying agent and high softening point bitumen particle synergy, the heat endurance of invert mud and electrical stability are all significantly improved.
(4) crack of oil-gas Layer or duct are not of uniform size, and the deformability of simple high softening point bitumen particle is limited after all, fine coupling with it, therefore easily cause and can not be embedded into arbitrarily the problems such as the duct of all size and shapes in well, be difficult to play desirable shutoff and fall filtration effect; The present invention adopts taking the rubber powder of suitable particle diameter as nuclear phase, the modification high softening point bitumen particle obtaining taking high softening point bitumen as shell, increase its viscoelastic scope of application, can in wider pore size distribution range, use, played good shutoff and the effect of stabilizing borehole.
Detailed description of the invention
To be further described the present invention by embodiment below, but not thereby limiting the invention, percentage composition is wherein quality percentage composition.
Embodiment 1
Get softening point and be the oxidized asphalt 60g of 139.6 DEG C, and softening point is the coal tar pitch 40g of 141.2 DEG C, is mixed and heated to molten condition. Get neoprene rubber powder 70g, preheating 30 minutes at 110 DEG C of temperature. The high softening point bitumen having melted is placed in to watering can, high softening point bitumen is evenly sprayed onto on the particle of preheating, sprinkling limit, limit is stirred. After sprinkling finishes, under 130 DEG C of conditions, leave standstill 25 minutes, cool to room temperature. Then be placed in household freezer freezing (cryogenic temperature-35 DEG C, cooling time is 14 hours). After taking-up, put into vibratory sieve, add 8.5g OTAC. 80 mesh standard sieves are selected at the sieve end, and 30s is pulverized in vibration, obtains modification high softening point bitumen composition grain under sieve.
Get 5# white oil and calcium chloride water (concentration 20%), press profit volume ratio (70:30) preparation base fluid, add 2.5% oleamide, high-speed stirred 15 minutes, adds 1% organoclay at normal temperatures, stirs 5 minutes, add 0.5% rosin acid polyoxyethylene ester and the high softening point bitumen composition grain that accounts for drilling fluid total amount 3.5% to continue to stir 20 minutes, add heavy weight additive barite, drilling fluid density is adjusted to desired value, obtain stable invert mud.
Embodiment 2
Get softening point and be the oxidized asphalt 35g of 154.0 DEG C, and softening point is the coal tar pitch 65g of 152.3 DEG C, is mixed and heated to molten condition. Get butyl rubber rubber powder 50g, preheating 40 minutes at 90 DEG C of temperature. The high softening point bitumen having melted is placed in to watering can, high softening point bitumen is evenly sprayed onto on the particle of preheating, sprinkling limit, limit is stirred. After sprinkling finishes, under 145 DEG C of conditions, leave standstill 35 minutes, cool to room temperature. Then be placed in household freezer freezing (cryogenic temperature-30 DEG C, cooling time is 10 hours). After taking-up, put into vibratory sieve, add 6.5g bay alcohol radical sodium sulphate. 100 mesh standard sieves are selected at the sieve end, and 35s is pulverized in vibration, obtains modification high softening point bitumen composition grain under sieve.
Get 4# white oil and calcium chloride water (concentration 20%), press profit volume ratio (75:25) preparation base fluid, add 1.2% lauroyl diethanolamine, high-speed stirred 20 minutes, adds 1.5% organoclay at normal temperatures, stirs 5 minutes, add 0.8% polyoxyethylene oleic acid ester and the high softening point bitumen composition grain that accounts for drilling fluid total amount 3% to continue to stir 30 minutes, add heavy weight additive lime stone, drilling fluid density is adjusted to desired value, obtain stable invert mud.
Embodiment 3
Get softening point and be the oxidized asphalt 50g of 168.9 DEG C, and softening point is the coal tar pitch 50g of 165.6 DEG C, is mixed and heated to molten condition. Get butyl rubber rubber powder 38g, preheating 30 minutes at 100 DEG C of temperature. The high softening point bitumen having melted is placed in to watering can, high softening point bitumen is evenly sprayed onto on the particle of preheating, sprinkling limit, limit is stirred. After sprinkling finishes, under 150 DEG C of conditions, leave standstill 45 minutes, cool to room temperature. Then be placed in household freezer freezing (cryogenic temperature-25 DEG C, cooling time is 16 hours). After taking-up, put into vibratory sieve, add 7.0g sodium lignin sulfonate. 120 mesh standard sieves are selected at the sieve end, and 25s is pulverized in vibration, obtains modification high softening point bitumen composition grain under sieve.
Get 5# white oil and calcium chloride water (concentration 20%), press profit volume ratio (65:35) preparation base fluid, add 2.0% oleoyl diethanol amine, high-speed stirred 25 minutes, adds 2% organoclay at normal temperatures, stirs 5 minutes, add 1.0%Span-80 and the high softening point bitumen composition grain that accounts for drilling fluid total amount 4.0% to continue to stir 40 minutes, add heavy weight additive lime stone, drilling fluid density is adjusted to desired value, obtain stable invert mud.
Embodiment 4
Get softening point and be the solution-off pitch 70g of 181.2 DEG C, and softening point is the coal tar pitch 30g of 180.5 DEG C, is mixed and heated to molten condition. Get acrylonitrile-butadiene rubber rubber powder 56g, preheating 25 minutes at 105 DEG C of temperature. The high softening point bitumen having melted is placed in to watering can, high softening point bitumen is evenly sprayed onto on the particle of preheating, sprinkling limit, limit is stirred. After sprinkling finishes, under 175 DEG C of conditions, leave standstill 35 minutes, cool to room temperature. Then be placed in household freezer freezing (cryogenic temperature-20 DEG C, cooling time is 12 hours). After taking-up, put into vibratory sieve, add 9.2g calcium lignosulfonate. 100 mesh standard sieves are selected at the sieve end, and 20s is pulverized in vibration, obtains modification high softening point bitumen composition grain under sieve.
Get 3# white oil and calcium chloride water (concentration 20%), press profit volume ratio (80:20) preparation base fluid, add 1.3% cocounut oil acyl diethanol amine, high-speed stirred 30 minutes, adds 1.5% organoclay at normal temperatures, stirs 5 minutes, add 0.9% polyoxyethylene stearic acid ester and the high softening point bitumen composition grain that accounts for drilling fluid total amount 3.2% to continue to stir 40 minutes, add heavy weight additive barite, drilling fluid density is adjusted to desired value, obtain stable invert mud.
Comparative example 1
Preparation water-in-oil based water drilling fluid basic components, get 3# white oil and calcium chloride water (concentration 20%), press profit volume ratio (80:20) preparation base fluid, add 1.3% cocounut oil acyl diethanol amine, at normal temperatures high-speed stirred 30 minutes, add 1.5% organoclay, stir 5 minutes, add 0.9% polyoxyethylene stearic acid ester to continue to stir 40 minutes, add heavy weight additive barite, drilling fluid density is adjusted to desired value, obtains stable invert mud.
Comparative example 2
Get softening point and be the oxidized asphalt 60g of 139.6 DEG C, and softening point is the coal tar pitch 40g of 141.2 DEG C, gets neoprene rubber powder 70g, be then placed in household freezer freezing (cryogenic temperature-35 DEG C, cooling time is 14 hours). After taking-up, add 8.2g OTAC, in Miniature universal pulverizer, pulverize 30s, select 80 mesh standard sieve screenings, under sieve, obtain high softening point bitumen rubber grain.
Get 3# white oil and calcium chloride water (concentration 20%), press profit volume ratio (80:20) preparation base fluid, add 1.3% cocounut oil acyl diethanol amine, high-speed stirred 30 minutes, adds 1.5% organoclay at normal temperatures, stirs 5 minutes, add 0.9% polyoxyethylene stearic acid ester and the high softening point bitumen rubber grain that accounts for drilling fluid total amount 3.5% to continue to stir 40 minutes, heavy weight additive barite, is adjusted to desired value drilling fluid density, obtains stable invert mud.
Measure respectively the character of drilling fluid in above-described embodiment and comparative example, in table 1.
Table 1 water-in-oil based water property of drilling fluid
Note: heat is rolled condition: the time is 16 hours, 180 DEG C of temperature;
Rheological characteristic probe temperature is 60 DEG C
High temperature and high pre ssure filtration condition determination: 180 DEG C, 3.5MPa
Wherein: AV: apparent viscosity
PV: plastic viscosity
YP: yield value
YP/PV: ratio of dynamic shear force/yield value to plastic viscosity
FLHTHP: high temperature and high pre ssure filtration
ES: emulsion-breaking voltage
In table, data are clear shows the water-in-oil based water drilling fluid that contains modification high softening point bitumen particle of the present invention, has lower plastic viscosity, higher yield value, ratio of dynamic shear force/yield value to plastic viscosity and emulsion-breaking voltage, has improved high-temperature resistance and the large rock-carrying ability of system. Particularly, in the higher invert mud system of water content, still maintain higher emulsion-breaking voltage, ensured the electrical stability of system.
Claims (15)
1. a high temperature water-in-oil drilling, is characterized in that: wherein contain a kind of composition grain that high softening point bitumen is wrapped in to rubber grain outside, the content of composition grain is 1% ~ 5% of drilling fluid gross mass.
2. according to high temperature water-in-oil drilling claimed in claim 1, it is characterized in that: the softening point of described high softening point bitumen is 120～220 DEG C, in composition grain, in mass fraction, containing 50～80 parts of high softening point bitumens, 20～50 parts of rubber grains.
3. a high temperature water-in-oil drilling, is characterized in that: drilling fluid comprises profit base fluid and additive, and wherein profit base fluid is by volume: oil phase: water=90:10～60:40; Additive comprises high softening point bitumen composition grain, and wherein high softening point bitumen composition grain addition accounts for 1% ~ 5% of drilling fluid gross mass.
4. according to high temperature water-in-oil drilling claimed in claim 3, it is characterized in that: the average grain diameter of bituminous composition particle is for being less than 60 orders.
5. according to high temperature water-in-oil drilling claimed in claim 3, it is characterized in that: additive, in profit base fluid quality, comprises following component:
(1) primary emulsion: 0.5～5%
(2) auxiliary emulsifying agent: 0.1～3%
(3) organoclay: 1～3%
(4) properties modifier: 1～5%
In properties modifier, comprise described modification high softening point bitumen composition grain.
6. according to high temperature water-in-oil drilling claimed in claim 3, it is characterized in that: in drilling fluid, also add heavy weight additive, as barite, lime stone or their mixture, make drilling fluid density reach 1.50～2.10g/cm3。
7. according to high temperature water-in-oil drilling claimed in claim 3, it is characterized in that: described oil phase is diesel oil, biodiesel, white oil, vegetable oil, preferably white oil; Described water is the calcium chloride water of 10～30% concentration.
8. according to high temperature water-in-oil drilling claimed in claim 5, it is characterized in that: primary emulsion is higher fatty acid amide series of surfactants, as one or more in lauroyl diethanolamine, oleamide, oleoyl diethanol amine, cocounut oil acyl diethanol amine; Auxiliary emulsifying agent is the surfactant of Span series, as one or more in Span-60, Span-80, Span-85, or polyoxyethylene carboxylate series, as one or more in rosin acid polyoxyethylene ester, polyoxyethylene oleic acid ester, polyoxyethylene stearic acid ester.
9. according to high temperature water-in-oil drilling claimed in claim 5, it is characterized in that: described modification high softening point bitumen composition grain is a kind of composition grain that high softening point bitumen is wrapped in to rubber grain outside.
10. according to high temperature water-in-oil drilling claimed in claim 9, it is characterized in that: described high softening point bitumen is asphalt and/or coal tar pitch, be preferably the mixture of asphalt and coal tar pitch, wherein asphalt accounts for 30%～70% of high softening point bitumen quality, 70%～30% of coal tar pitch high softening point bitumen quality, wherein asphalt is one or more mixing in oxidized asphalt, solution-off pitch or bitumen, and coal tar pitch is the product that coal tar obtains after middle temperature or high temperature distillation.
11. according to high temperature water-in-oil drilling claimed in claim 9, it is characterized in that: described rubber powder particle is one or more in butyl rubber rubber powder, acrylonitrile-butadiene rubber rubber powder, neoprene rubber powder, butadiene-styrene rubber rubber powder or fluorine-containing rubber rubber powder.
12. according to high temperature water-in-oil drilling claimed in claim 9, it is characterized in that: in described modification high softening point bitumen composition grain, add promoter, by mass parts, promoter addition is 1～10 part, wherein promoter is one or more in sulfate, quaternary ammonium salt or lignosulfonates, and wherein sulfate is one or more in modification bay alcohol radical sodium sulphate, secondary alcohol groups sodium sulphate and mixed fatty alcohol sodium sulphate etc.; Quaternary ammonium salt is one or more in DTAC, hexadecyltrimethylammonium chloride, OTAC etc.; Lignosulfonates are sodium lignin sulfonate or calcium lignosulfonate.
The preparation method of high temperature water-in-oil drilling described in 13. 1 kinds of claim 1-12, comprises following process:
(1) prepare high softening point bitumen composition grain;
(2) prepare drilling fluid;
In above-mentioned preparation process (1), the preparation process of high softening point bitumen composition grain is as follows:
High softening point bitumen is heated to molten state, evenly be sprayed onto on preheated rubber powder particle, carry out freezingly after leaving standstill infiltration, after freezing, in vibratory sieve, vibrate pulverizing, wherein vibratory sieve sieve aperture is for being greater than 60 mesh standard sieves, and lower part of screen is divided and is the bituminous composition particle obtaining.
14. according to the preparation method described in claim 13, it is characterized in that: described sprinkling high softening point bitumen liquid adopts the equipment with spraying function, as watering can, spraying machine, sprayer, in sprinkling process, can material be stirred or be mixed and stirred, make the high softening point bitumen liquid of melting be dispersed in rubber powder particle surface.
15. according to the preparation method described in claim 13, it is characterized in that: described step (2) is prepared the step of drilling fluid: first measure base oil and calcium chloride water with graduated cylinder, volume ratio preparation profit base fluid on request, add primary emulsion, high-speed stirred 10～30 minutes at normal temperatures, add organoclay, stir 5～10 minutes, add again auxiliary emulsifying agent and high softening point bitumen composition grain, continue to stir 20～40 minutes, add heavy weight additive, drilling fluid density is adjusted to desired value, obtain stable invert mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564102.6A CN105586022B (en) | 2014-10-22 | 2014-10-22 | A kind of high temperature resistance Water-In-Oil base drilling fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410564102.6A CN105586022B (en) | 2014-10-22 | 2014-10-22 | A kind of high temperature resistance Water-In-Oil base drilling fluid and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105586022A true CN105586022A (en) | 2016-05-18 |
| CN105586022B CN105586022B (en) | 2018-11-02 |
Family
ID=55925936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410564102.6A Active CN105586022B (en) | 2014-10-22 | 2014-10-22 | A kind of high temperature resistance Water-In-Oil base drilling fluid and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105586022B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108690574A (en) * | 2017-04-10 | 2018-10-23 | 中国石油化工股份有限公司 | A kind of modified epoxy pitch particle, Water-In-Oil base drilling fluid and preparation method thereof |
| CN108690580A (en) * | 2017-04-10 | 2018-10-23 | 中国石油化工股份有限公司 | A kind of Water-In-Oil base drilling fluid and preparation method thereof |
| CN108977179A (en) * | 2017-06-02 | 2018-12-11 | 中石化石油工程技术服务有限公司 | A kind of oil base drilling fluid compound emulsifying agent |
| CN110105931A (en) * | 2019-05-06 | 2019-08-09 | 滨州学院 | A kind of oil base drilling fluid and preparation method thereof based on modified castor oil |
| CN110922770A (en) * | 2018-09-20 | 2020-03-27 | 中国石油化工股份有限公司 | Modified epoxy asphalt particles and preparation and application thereof |
| CN108117863B (en) * | 2016-11-28 | 2020-08-11 | 中国石油化工股份有限公司 | Water-in-oil drilling fluid and preparation method thereof |
| CN112980404A (en) * | 2019-12-13 | 2021-06-18 | 中国石油化工股份有限公司 | Drilling fluid system for improving stratum conditions, preparation method and application thereof |
| CN117534467A (en) * | 2024-01-09 | 2024-02-09 | 湖南长宇科技发展有限公司 | Preparation method of high-homogeneity special graphite material for epitaxial growth substrate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132778A (en) * | 1994-12-07 | 1996-10-09 | 丸善石油化学株式会社 | Process for manufacturing fine particles of pitch with high softening point |
| CN102304353A (en) * | 2011-07-08 | 2012-01-04 | 克拉玛依市金鑫科技有限公司 | Environmental-friendly type oil-based drilling fluid and preparation method thereof |
| CN102382696A (en) * | 2011-09-21 | 2012-03-21 | 中国石油天然气股份有限公司 | Method for preparing aqueous asphalt slurry from high-softening-point petroleum asphalt grains |
| CN102775970A (en) * | 2012-07-12 | 2012-11-14 | 中国海洋石油总公司 | Weak-gel synthetic drilling fluid and preparation method thereof |
| CN103122151A (en) * | 2013-01-28 | 2013-05-29 | 江苏国正新材料科技有限公司 | Preparation method of pitch applied to high-strength and high-modulus pitch-based fiber |
| CN103804922A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Asphalt composition granule suitable for wider temperature drilling and preparation method thereof |
-
2014
- 2014-10-22 CN CN201410564102.6A patent/CN105586022B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132778A (en) * | 1994-12-07 | 1996-10-09 | 丸善石油化学株式会社 | Process for manufacturing fine particles of pitch with high softening point |
| CN102304353A (en) * | 2011-07-08 | 2012-01-04 | 克拉玛依市金鑫科技有限公司 | Environmental-friendly type oil-based drilling fluid and preparation method thereof |
| CN102382696A (en) * | 2011-09-21 | 2012-03-21 | 中国石油天然气股份有限公司 | Method for preparing aqueous asphalt slurry from high-softening-point petroleum asphalt grains |
| CN102775970A (en) * | 2012-07-12 | 2012-11-14 | 中国海洋石油总公司 | Weak-gel synthetic drilling fluid and preparation method thereof |
| CN103804922A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Asphalt composition granule suitable for wider temperature drilling and preparation method thereof |
| CN103122151A (en) * | 2013-01-28 | 2013-05-29 | 江苏国正新材料科技有限公司 | Preparation method of pitch applied to high-strength and high-modulus pitch-based fiber |
Non-Patent Citations (1)
| Title |
|---|
| 《沥青生产与应用技术手册》编委会: "《沥青生产与应用技术手册》", 30 May 2010, 北京:中国石化出版社 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108117863B (en) * | 2016-11-28 | 2020-08-11 | 中国石油化工股份有限公司 | Water-in-oil drilling fluid and preparation method thereof |
| CN108690574A (en) * | 2017-04-10 | 2018-10-23 | 中国石油化工股份有限公司 | A kind of modified epoxy pitch particle, Water-In-Oil base drilling fluid and preparation method thereof |
| CN108690580A (en) * | 2017-04-10 | 2018-10-23 | 中国石油化工股份有限公司 | A kind of Water-In-Oil base drilling fluid and preparation method thereof |
| CN108690580B (en) * | 2017-04-10 | 2020-11-06 | 中国石油化工股份有限公司 | Water-in-oil base drilling fluid and preparation method thereof |
| CN108690574B (en) * | 2017-04-10 | 2021-04-06 | 中国石油化工股份有限公司 | Modified epoxy asphalt particles, water-in-oil base drilling fluid and preparation method thereof |
| CN108977179A (en) * | 2017-06-02 | 2018-12-11 | 中石化石油工程技术服务有限公司 | A kind of oil base drilling fluid compound emulsifying agent |
| CN110922770A (en) * | 2018-09-20 | 2020-03-27 | 中国石油化工股份有限公司 | Modified epoxy asphalt particles and preparation and application thereof |
| CN110922770B (en) * | 2018-09-20 | 2021-11-09 | 中国石油化工股份有限公司 | Modified epoxy asphalt particles and preparation and application thereof |
| CN110105931A (en) * | 2019-05-06 | 2019-08-09 | 滨州学院 | A kind of oil base drilling fluid and preparation method thereof based on modified castor oil |
| CN112980404A (en) * | 2019-12-13 | 2021-06-18 | 中国石油化工股份有限公司 | Drilling fluid system for improving stratum conditions, preparation method and application thereof |
| CN112980404B (en) * | 2019-12-13 | 2023-01-10 | 中国石油化工股份有限公司 | Drilling fluid system for improving stratum conditions, preparation method and application thereof |
| CN117534467A (en) * | 2024-01-09 | 2024-02-09 | 湖南长宇科技发展有限公司 | Preparation method of high-homogeneity special graphite material for epitaxial growth substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105586022B (en) | 2018-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105586022A (en) | Water-in-oil based drilling fluid with high temperature resistance and preparation method thereof | |
| CN105586021A (en) | High-performance water-in-oil based drilling fluid and preparation method thereof | |
| US8607895B2 (en) | Drilling fluid additive for reducing lost circulation in a drilling operation | |
| CN105586020A (en) | Whole oil-based drilling fluid and preparation method thereof | |
| CN104087274A (en) | Multi-stage blocking pressure-bearing plugging agent | |
| CN102304353A (en) | Environmental-friendly type oil-based drilling fluid and preparation method thereof | |
| CN103045210A (en) | High-efficiency plugging oil-base drilling fluid and preparation method thereof | |
| CN104559968B (en) | A kind of high-temperature resistant water-based drilling fluid and preparation method thereof | |
| CN104610936B (en) | A kind of full oil base drilling fluid fluid loss additive and preparation method thereof | |
| CA2878464C (en) | Solubilized polymer concentrates, methods of preparation thereof, and well drilling and servicing fluids containing the same | |
| CN103102705B (en) | Asphalt composition particle and preparation method thereof | |
| CN104559233A (en) | Asphalt composition particle and preparation method thereof | |
| CN105524476B (en) | A kind of modified asphalt composite particle and preparation method | |
| CN108504339A (en) | A kind of water-base drilling fluid and its preparation method and application suitable for compact oil reservoir | |
| CN106147729A (en) | A kind of oil base drilling fluid and preparation method thereof | |
| CN108239528A (en) | A kind of oil base drilling fluid | |
| EP2791272A1 (en) | Compositions and methods for treatment of well bore tar | |
| CN105623280A (en) | Asphalt composition particles, and preparation method and application thereof | |
| CA2945989A1 (en) | Water-based drilling fluid for reducing bitumen accretion | |
| CN105585864B (en) | A kind of latex modified asphalt composition grain and preparation method thereof | |
| CN104531100A (en) | Organic salt weighting agent for drilling fluid | |
| CN105585861B (en) | A kind of modified pitch particle and preparation method thereof | |
| CN105585858A (en) | Modified asphalt composition particles and preparation method thereof | |
| CN105585862B (en) | A kind of modified asphalt composite particle and preparation method thereof | |
| CN108117863A (en) | Water-In-Oil base drilling fluid and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |