CN106190070A - Drilling fluid acid-soluble pressurization sealing agent and preparation method - Google Patents
Drilling fluid acid-soluble pressurization sealing agent and preparation method Download PDFInfo
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- CN106190070A CN106190070A CN201610559685.2A CN201610559685A CN106190070A CN 106190070 A CN106190070 A CN 106190070A CN 201610559685 A CN201610559685 A CN 201610559685A CN 106190070 A CN106190070 A CN 106190070A
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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
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
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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
- C09K2208/10—Nanoparticle-containing well treatment fluids
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Abstract
A kind of drilling fluid acid-soluble pressurization sealing agent and preparation method, including friction resistance material, bridging materials, packing material, iron tailings sand, volcano ashes, wood activated charcoal powder, nanometer zinc phosphate calcium, paraffin, polyol fatty acid ester, titanium dioxide, admaic earth, alginic acid, dimethyl diallyl ammonium chloride, polyvinyl acetate, glyceryl monostearate, travertine gelled material, copper oxide, benzyl disulfide, α alpha-cyanoacrylate n-octyl, Sodium Caseinate, slag, white carbon, dolomite dust, manganese dioxide, kieselguhr, dibutyl phthalate, polyvinyl alcohol, tert-butylhydroquinone, phthalic anhydride and H2O, avoid that execute-in-place method of the prior art is loaded down with trivial details, service requirement strict in conjunction with its preparation method, the invasion and attack of periphery particulate solid to such an extent as to usually occur that the stress effect of the rotary course that leak stopping performance is the best, leak stopping framework suffers damage, axle makes motor shaft or rotating shaft the defect bent and stretched occur owing to connecting the most firm meeting.
Description
Technical field
The invention belongs to sealing agent technical field, be specifically related to a kind of drilling fluid acid-soluble pressurization sealing agent and preparation side
Method.
Background technology
In order to improve leak stopping success rate and the bearing capacity of smooth crack leakage, reduce leakage complexity and lost efficacy, improve exploration and open
Send out drilling benefit, prior art proposes a kind of by friction resistance material, bridging materials, the drilling fluid pressure-bearing of packing material composition
Sealing agent, its preparation technology is easy, and material source is wide, it is easy to promote the use of.
But this drilling fluid pressurization sealing agent specifically used during, often occur that execute-in-place method is numerous
Trivial, service requirement is strict, the invasion and attack of periphery particulate solid to such an extent as to the state that leak stopping performance is the best usually occurs.
Additionally this drilling fluid pressurization sealing agent specifically used during, its list structure usually can be by extraneous spine
Shape object is pierced allows leak stopping framework be damaged so that leak stopping performance impairment.
Also having is exactly in the preparation process of this drilling fluid pressurization sealing agent, often by mandrel connector motor
The rotating shaft of motor shaft and agitator is tied, and allows agitator be stirred with this, but current mandrel connector usually can
Occur that the stress effect of the rotary course due to axle makes motor shaft or rotating shaft the problem bent and stretched occur owing to connecting the most firm meeting.
Summary of the invention
It is an object of the invention to provide a kind of drilling fluid acid-soluble pressurization sealing agent and preparation method, it is to avoid prior art
In execute-in-place method is loaded down with trivial details, service requirement strict, the invasion and attack of periphery particulate solid to such an extent as to leak stopping performance usually occurs not
Good, leak stopping framework suffers that the stress effect of the rotary course of damage, axle makes motor shaft or rotating shaft go out owing to connecting the most firm meeting
The defect now bent and stretched.
In order to overcome deficiency of the prior art, the invention provides a kind of drilling fluid acid-soluble pressurization sealing agent and system
The solution of Preparation Method, specific as follows:
A kind of drilling fluid acid-soluble pressurization sealing agent, the raw material including following parts by weight are prepared from: 10-20 weight
The friction resistance material of number, the bridging materials of 45-50 parts by weight, the packing material of 35-40 parts by weight, 50-55 parts by weight
Iron tailings sand, the volcano ashes of 16-21 parts by weight, the wood activated charcoal powder of 15-18 parts by weight, 6-12 parts by weight
Nanometer zinc phosphate calcium, the paraffin of 8-12 parts by weight, the polyol fatty acid ester of 8-13 parts by weight, 80-100 parts by weight
Titanium dioxide, the admaic earth of 40-50 parts by weight, the alginic acid of 2-4 parts by weight, dimethyl two allyl of 1-2 parts by weight
Ammonium chloride, the polyvinyl acetate of 1-2 parts by weight, the glyceryl monostearate of 1-2 parts by weight, 60-70 parts by weight
Travertine gelled material, the copper oxide of 58-62 parts by weight, the benzyl disulfide of 50-55 parts by weight, 30-32 parts by weight
α-n-octylcyanoacrylate, the Sodium Caseinate of 30-40 parts by weight, the slag of 30-60 parts by weight, 90-95 weight portion
The white carbon of number, the dolomite dust of 30-60 parts by weight, the manganese dioxide of 30-50 parts by weight, the silicon of 20-30 parts by weight
Diatomaceous earth, the dibutyl phthalate of 50-55 parts by weight, the polyvinyl alcohol of 30-40 parts by weight, 50-55 parts by weight
Tert-butylhydroquinone, the phthalic anhydride of 80-85 parts by weight, the H of 80-120 parts by weight2O。
Described raw material also includes the acid-soluble chemical substance material of 15-45 parts by weight, the organoclay of 5-25 parts by weight
Powder, the inorganic mineral of 5-30 parts by weight, the water-absorbing resin of 5-25 parts by weight, the cement of 0-40 parts by weight, 0-20 weight
The fibrous material of amount number.
The granularity of described iron tailings sand is 200um-1500um.
The granularity of described slag is 200um-1500um.
The described drilling fluid preparation method of acid-soluble pressurization sealing agent, step is as follows:
1) weighing the bridging materials of 45-50 parts by weight, the packing material of 35-40 parts by weight mixes all at normal temperatures
Even；
2) friction resistance material weighing 10-20 parts by weight is added thereto, and under room temperature, mix homogeneously is stand-by as initial ingredients；
3) the iron tailings sand of 50-55 parts by weight is weighed, the volcano ashes of 16-21 parts by weight and 15-18 parts by weight
Wood activated charcoal powder, mix homogeneously is stand-by as the second dispensing；
4) weighing the nanometer zinc phosphate calcium of 6-12 parts by weight, paraffin and the 8-13 parts by weight of 8-12 parts by weight are many
Unit's alcohol fatty acid ester mix homogeneously, is then warmed up to 90-105 DEG C and lasting 4-6h, as the 3rd dispensing, subsequently the second dispensing
Also mix homogeneously with the 3rd dispensing, be warmed up to 90-92 DEG C and lasting 6-7h, then carry out wind cooling temperature lowering to after obtaining wind cooling temperature lowering
Material, whether the granularity of material after inspection wind cooling temperature lowering is in the scope of 30um-9000um, if being not located at 30um-
In the scope of 9000um, filter is used to filter so that the granularity of the material after filtering is in the scope of 30um-9000um,
Material after filtering, whether not less than 99.9%, if less than 99.9%, is just held by the mass dryness fraction of the material after inspection is filtered subsequently
Sector-style is done dehumidifying and is made the mass dryness fraction of the material after filtering not less than 99.9%, then the material after filtration is treated as the 4th dispensing
With；
5) titanium dioxide of 80-100 parts by weight, the admaic earth of 40-50 parts by weight, the Sargassum of 2-4 parts by weight are weighed
Acid, the dimethyl diallyl ammonium chloride of 1-2 parts by weight, the polyvinyl acetate of 1-2 parts by weight and 1-2 parts by weight
Glyceryl monostearate, stand-by as the 5th dispensing after mix homogeneously；
6) travertine gelled material of 60-70 parts by weight, the copper oxide of 58-62 parts by weight, 50-55 parts by weight are weighed
Benzyl disulfide, the α-n-octylcyanoacrylate of 30-32 parts by weight, the Sodium Caseinate of 30-40 parts by weight, 30-60
The slag of parts by weight, the white carbon of 90-95 parts by weight, the dolomite dust of 30-60 parts by weight, 30-50 parts by weight
Manganese dioxide, the kieselguhr of 20-30 parts by weight and the H of 80-120 parts by weight2O, mix homogeneously, it is warmed up to 193-201
DEG C and lasting 30-60 second, then weigh the dibutyl phthalate of 50-55 parts by weight, the polyethylene of 30-40 parts by weight
Alcohol, the tert-butylhydroquinone of 50-55 parts by weight and the phthalic anhydride of 80-85 parts by weight add, and mixing is all
After even stand-by as the 6th dispensing；
7) finally described initial ingredients, the 4th dispensing, the 5th dispensing are mixed homogeneously with the 6th dispensing just obtained described
Drilling fluid is with acid-soluble pressurization sealing agent.
Described 3), 4), 5), 6) and 7) described in mix homogeneously operation be and first pass through the motor shaft of motor and stirring
The rotating shaft mixing device is tied, and starts motor to drive agitator to mix with this, finally reaches the purpose of mix homogeneously；
The connecting structure of the motor shaft of described motor and the rotating shaft of agitator is: the right head of the motor shaft A1 of described motor
For the first flaring mouth A10 in flaring shape from left to right, the left head of the rotating shaft A2 of described agitator be right-to-left be flaring
Second flaring mouth A20 of shape, the inner surface at described first flaring mouth A10 arranges card T-Ring A3, described second flaring mouth A20
Inner surface have the buckling groove A4 with described card T-Ring A3 phase clamping；First sleeve A7 is around being connected to described first flaring mouth
On the outer surface of A10, the floor projection of described first sleeve A10 is the annular profile that two concentric circulars are constituted, and these two with one heart
Circle is constituted for the first internally positioned inner circle and the first externally-located cylindrical, and the second inner circle is positioned at the first flaring mouth A10's
In the region that the outline of floor projection is enclosed；Second sleeve A8 cincture is connected on the outer surface of described second flaring mouth A20,
The floor projection of described second sleeve A8 is the annular profile that two concentric circulars are constituted, and these two concentric circulars are internally positioned the
Two inner circles and externally-located second cylindrical are constituted, and the second inner circle is positioned at the outline of floor projection of the second flaring mouth A20
In the region enclosed；Rivet through rivet A9 phase between described first sleeve A7 and the second sleeve A8, around described first flaring
Also fit on mouthful A10 outer surface the first copper alloy ring A5, also fits second on described second flaring mouth A20 outer surface
Copper alloy ring A6, described card T-Ring A3 are the card T-Ring with ellipticity rubber ring A11, and described buckling groove A4 is with ellipse
The buckling groove of shape rubber ring.
Additionally 7) in obtain described drilling fluid with after acid-soluble pressurization sealing agent, then weigh the acid of 15-45 parts by weight
Soluble chemical substance material, the organoclay powder of 5-25 parts by weight, the inorganic mineral of 5-30 parts by weight, 5-25 parts by weight
Water-absorbing resin, the cement of 0-40 parts by weight, the fibrous material of 0-20 parts by weight, 7) in the described drilling fluid that obtains use
Acid-soluble pressurization sealing agent is with the acid-soluble chemical substance material of 15-45 parts by weight, the organoclay powder of 5-25 parts by weight, 5-
The inorganic mineral of 30 parts by weight, the water-absorbing resin of 5-25 parts by weight, the cement of 0-40 parts by weight and 0-20 weight portion
After the fibrous material phase mix homogeneously of number, then it is mixed for for the water of weight 2-7 times of the mixture of gained after mixing homogeneously
Leak stopping, it is also possible to be used for leak stopping with for the drilling fluid mixed of weight 3-10 times of the mixture of gained after mixing homogeneously.
Via being filled into iron tailings sand, volcano ashes and wood activated charcoal powder, it is possible to further ensure that described drilling fluid is used
The loose feature of acid-soluble pressurization sealing agent and the feature preventing high temperature attack, be more able to ensure that described drilling fluid holds with acid-soluble
The leak stopping feature of pressure sealing agent, volcano ashes can improve the drilling fluid feature with the sealed blockage of acid-soluble pressurization sealing agent,
Improving plugging effect, wood activated charcoal powder is with the excellent feature stopping high temperature attack, it is possible to improve drilling fluid acid molten
Property pressurization sealing agent stop high temperature attack feature, iron tailings sand improve the acid-soluble pressurization sealing agent of drilling fluid loosen
It is molten that feature, additionally nanometer zinc phosphate calcium, paraffin and polyol fatty acid ester the most further improve the acid of described drilling fluid
Property pressurization sealing agent loose feature with prevent the feature of high temperature attack, understand from embodiment, nanometer zinc phosphate calcium, paraffin and
Polyol fatty acid ester ensure that this drilling fluid characteristic with acid-soluble pressurization sealing agent.Through the checking of embodiment, described brill
Well liquid is with the heat reflectivity of acid-soluble pressurization sealing agent all more than 98%, and sealing ratiod is all more than 99% so that prevent high temperature
Invasion and attack and the excellent performance of sealed blockage, the most described drilling fluid is the best by the loose performance of acid-soluble pressurization sealing agent, Bu Huining
Form and stick together, so make operational approach be not difficult, service requirement is loose, the effect of resisting the invasion and attack of periphery particulate solid is good, will not
Occur wrinkling bursting apart, leak stopping performance the best, with practical advantage, titanium dioxide, admaic earth, alginic acid, dimethyl diene
The addition of propyl ammonium chloride, polyvinyl acetate and glyceryl monostearate, at drilling fluid with acid-soluble pressurization sealing agent quilt
When extraneous spininess object is pierced, it becomes possible to the relaxing the bowels with lubricant drugs of invading at liquid can become greatly by volume, is sealed so that pierce position
Close, the advantage with automatic reduction.Additionally adding travertine gelled material, copper oxide, benzyl disulfide, alpha-cyano propylene
Acid n-octyl, Sodium Caseinate, slag, white carbon, dolomite dust, manganese dioxide, kieselguhr, dibutyl phthalate, poly-second
Enol, tert-butylhydroquinone, phthalic anhydride and H2After O, it is significantly reduced the size of accumulative wastage, hence it is evident that improve
Leak stopping performance.
Accompanying drawing explanation
Fig. 1 is the connecting structure of the rotating shaft of the motor shaft of the motor of the present invention and agitator plane under separation condition
Figure.
Fig. 2 is the connecting structure of the rotating shaft of the motor shaft of the motor of the present invention and agitator plane under join condition
Figure.
Detailed description of the invention
With embodiment, summary of the invention is described further below in conjunction with the accompanying drawings:
Embodiment 1
With reference to shown in Fig. 1-Fig. 2, drilling fluid with acid-soluble pressurization sealing agent, including following parts by weight raw material preparation and
Become: parts by weight are the friction resistance material of 10 parts, and parts by weight are the bridging materials of 45 parts, and parts by weight are the filling material of 35 parts
Material, parts by weight are the iron tailings sand of 50 parts, and parts by weight are the volcano ashes of 16 parts, and parts by weight are the wooden activity of 15 parts
Carbon powder, parts by weight are the nanometer zinc phosphate calcium of 6 parts, and parts by weight are the paraffin of 8 parts, and parts by weight are the polyhydric alcohol of 8 parts
Fatty acid ester, parts by weight are the titanium dioxide of 80 parts, and parts by weight are the admaic earth of 40 parts, and parts by weight are the alginic acid of 2 parts,
Parts by weight are the dimethyl diallyl ammonium chloride of 1 part, and parts by weight are the polyvinyl acetate of 1 part, and parts by weight are 1
The glyceryl monostearate of part, parts by weight are the travertine gelled material of 60 parts, and parts by weight are the copper oxide of 58 parts, weight portion
Number is the benzyl disulfide of 50 parts, and parts by weight are the α-n-octylcyanoacrylate of 30 parts, and parts by weight are the casein of 30 parts
Acid sodium, parts by weight are the slag of 30 parts, and parts by weight are the white carbon of 90 parts, and parts by weight are the dolomite dust of 30 parts, weight
Amount number is the manganese dioxide of 30 parts, and parts by weight are the kieselguhr of 20 parts, and parts by weight are phthalic acid two fourth of 50 parts
Ester, parts by weight are the polyvinyl alcohol of 30 parts, and parts by weight are the tert-butylhydroquinone of 50 parts, and parts by weight are the neighbour of 80 parts
Phthalate anhydride, parts by weight are the H of 80 parts2O；The granularity of described iron tailings sand is 200um.The granularity of described slag is
200um。
The described drilling fluid preparation method of acid-soluble pressurization sealing agent, step is as follows:
1) weighing the bridging materials that parts by weight are 45 parts, parts by weight are that the packing material of 35 parts mixes all at normal temperatures
Even；
2) weighing the friction resistance material that parts by weight are 10 parts to be added thereto, under room temperature, mix homogeneously is treated as initial ingredients
With；
3) weighing the iron tailings sand that parts by weight are 50 parts, parts by weight are the volcano ashes of 16 parts and parts by weight are 15
The wood activated charcoal powder of part, mix homogeneously is stand-by as the second dispensing；
4) weighing the nanometer zinc phosphate calcium that parts by weight are 6 parts, parts by weight are the paraffin of 8 parts and parts by weight are 8 parts
Polyol fatty acid ester mix homogeneously, be then warmed up to 90 DEG C and lasting 4h, as the 3rd dispensing, subsequently the second dispensing with
3rd dispensing also mix homogeneously, is warmed up to 90 DEG C and lasting 6h, then carries out wind cooling temperature lowering to obtain the material after wind cooling temperature lowering,
Whether the granularity of the material after inspection wind cooling temperature lowering is in the scope of 30um-9000um, if being not located at 30um-9000um's
In scope, use filter to filter so that the granularity of the material after filtering is in the scope of 30um-9000um, check subsequently
Whether the mass dryness fraction of the material after filtration is not less than 99.9%, if less than 99.9%, just performs to air-dry to the material after filtering and removes
The mass dryness fraction of the wet material made after filtering is not less than 99.9%, then using stand-by as the 4th dispensing for the material after filtration；
5) weighing the titanium dioxide that parts by weight are 80 parts, parts by weight are the admaic earth of 40 parts, and parts by weight are the sea of 2 parts
Alginic acid, parts by weight are the dimethyl diallyl ammonium chloride of 1 part, and parts by weight are polyvinyl acetate and the weight of 1 part
Number is the glyceryl monostearate of 1 part, stand-by as the 5th dispensing after mix homogeneously；
6) weighing the travertine gelled material that parts by weight are 60 parts, parts by weight are the copper oxide of 58 parts, and parts by weight are
The benzyl disulfide of 50 parts, parts by weight are the α-n-octylcyanoacrylate of 30 parts, and parts by weight are the Sodium Caseinate of 30 parts,
Parts by weight are the slag of 30 parts, and parts by weight are the white carbon of 90 parts, and parts by weight are the dolomite dust of 30 parts, parts by weight
Being the manganese dioxide of 30 parts, parts by weight are the kieselguhr of 20 parts and H that parts by weight are 80 parts2O, mix homogeneously, heats up
To 193 DEG C and persistently 30 seconds, then weighing the dibutyl phthalate that parts by weight are 50 parts, parts by weight are the poly-second of 30 parts
Enol, parts by weight are the tert-butylhydroquinone of 50 parts and phthalic anhydride that parts by weight are 80 parts adds, mixed
After closing uniformly stand-by as the 6th dispensing；
7) finally described initial ingredients, the 4th dispensing, the 5th dispensing are mixed homogeneously with the 6th dispensing just obtained described
Drilling fluid is with acid-soluble pressurization sealing agent.
Described 3), 4), 5), 6) and 7) described in mix homogeneously operation be and first pass through the motor shaft of motor and stirring
The rotating shaft mixing device is tied, and starts motor to drive agitator to mix with this, finally reaches the purpose of mix homogeneously；
The connecting structure of the motor shaft of described motor and the rotating shaft of agitator is: the right head of the motor shaft A1 of described motor
For the first flaring mouth A10 in flaring shape from left to right, the left head of the rotating shaft A2 of described agitator be right-to-left be flaring
Second flaring mouth A20 of shape, the inner surface at described first flaring mouth A10 arranges card T-Ring A3, described second flaring mouth A20
Inner surface have the buckling groove A4 with described card T-Ring A3 phase clamping；First sleeve A7 is around being connected to described first flaring mouth
On the outer surface of A10, the floor projection of described first sleeve A10 is the annular profile that two concentric circulars are constituted, and these two with one heart
Circle is constituted for the first internally positioned inner circle and the first externally-located cylindrical, and the second inner circle is positioned at the first flaring mouth A10's
In the region that the outline of floor projection is enclosed；Second sleeve A8 cincture is connected on the outer surface of described second flaring mouth A20,
The floor projection of described second sleeve A8 is the annular profile that two concentric circulars are constituted, and these two concentric circulars are internally positioned the
Two inner circles and externally-located second cylindrical are constituted, and the second inner circle is positioned at the outline of floor projection of the second flaring mouth A20
In the region enclosed；Rivet through rivet A9 phase between described first sleeve A7 and the second sleeve A8, around described first flaring
Also fit on mouthful A10 outer surface the first copper alloy ring A5, also fits second on described second flaring mouth A20 outer surface
Copper alloy ring A6, described card T-Ring A3 are the card T-Ring with ellipticity rubber ring A11, and described buckling groove A4 is with ellipticity
The buckling groove of rubber ring；By the motor shaft of described motor and the connecting structure of the rotating shaft of agitator, the motor shaft of motor and stirring
The connection of the rotating shaft mixing device can be broken away from the complicated accessory of existing mandrel connector and realize connection, in conjunction with the first copper alloy ring A5
With the second copper alloy ring A6, even if illusive problem also will not be connect under the stress effect of the rotary course of axle, also
Motor shaft or rotating shaft would not be allowed the problem bent and stretched occur, and the card T-Ring of additionally mutually clamping and buckling groove, also plus described card
T-Ring A3 is the card T-Ring with ellipticity rubber ring A11, and described buckling groove A4 is the buckling groove with ellipticity rubber ring, this
Sample just can improve the tightness degree of combination, the problem not havinging damage further.
Then the heat reflectivity of acid-soluble pressurization sealing agent of the drilling fluid obtained by the present embodiment is tested, obtain
The test result of table 1:
Table 1
| Embodiment sequence number | Heat reflectivity |
| 1 | 98.4% |
The most also to the drilling fluid obtained by the present embodiment bearing capacity of acid-soluble pressurization sealing agent and accumulative leakage
Amount is tested, and concrete test mode is as follows:
Experimental apparatus: number of patent application is lost circulation simulator in 201020100879.4；
Experiment condition: simulation drop ply module is 2mm crack, experimental temperature 80 DEG C.
After testing, obtain the test result of table 2:
Table 2
| Embodiment sequence number | Bear pressure/MPa | Accumulative wastage/ml |
| 1 | 40.2 | 312.3 |
Finally the closure efficiency of acid-soluble pressurization sealing agent of the drilling fluid obtained by the present embodiment is tested, tool
Body test mode is as follows:
With the gluing quartz sand of epoxy resin, prepare artificial core, artificial core diameter 2.5cm, length 8cm, test artificial
The clear water permeability of rock core, is drilled to hollow structure by the inside center of artificial core, makes artificial core become internal diameter 1.8cm, outer
Footpath 2.5cm, the hollow circular ring of length 8cm, the drilling fluid of the present embodiment is injected separately in rock core with acid-soluble pressurization sealing agent,
Maintenance 10h at a set temperature, the permeability of clear water after test maintenance, experimental result is shown in Table 3:
Table 3
Via being filled into iron tailings sand, volcano ashes and wood activated charcoal powder, it is possible to further ensure that described drilling fluid is used
The loose feature of acid-soluble pressurization sealing agent and the feature preventing high temperature attack, be more able to ensure that described drilling fluid holds with acid-soluble
The leak stopping feature of pressure sealing agent, volcano ashes can improve the drilling fluid feature with the sealed blockage of acid-soluble pressurization sealing agent,
Improving plugging effect, wood activated charcoal powder is with the excellent feature stopping high temperature attack, it is possible to improve drilling fluid acid molten
Property pressurization sealing agent stop high temperature attack feature, iron tailings sand improve the acid-soluble pressurization sealing agent of drilling fluid loosen
It is molten that feature, additionally nanometer zinc phosphate calcium, paraffin and polyol fatty acid ester the most further improve the acid of described drilling fluid
Property pressurization sealing agent loose feature with prevent the feature of high temperature attack, understand from embodiment, nanometer zinc phosphate calcium, paraffin and
Polyol fatty acid ester ensure that this drilling fluid characteristic with acid-soluble pressurization sealing agent.Through the checking of embodiment, described brill
Well liquid is with the heat reflectivity of acid-soluble pressurization sealing agent all more than 98%, and sealing ratiod is all more than 99% so that prevent high temperature
Invasion and attack and the excellent performance of sealed blockage, the most described drilling fluid is the best by the loose performance of acid-soluble pressurization sealing agent, Bu Huining
Form and stick together, so make operational approach be not difficult, service requirement is loose, the effect of resisting the invasion and attack of periphery particulate solid is good, will not
Occur wrinkling bursting apart, leak stopping performance the best, with practical advantage, titanium dioxide, admaic earth, alginic acid, dimethyl diene
The addition of propyl ammonium chloride, polyvinyl acetate and glyceryl monostearate, at drilling fluid with acid-soluble pressurization sealing agent quilt
When extraneous spininess object is pierced, it becomes possible to the relaxing the bowels with lubricant drugs of invading at liquid can become greatly by volume, is sealed so that pierce position
Close, the advantage with automatic reduction.Additionally adding travertine gelled material, copper oxide, benzyl disulfide, alpha-cyano propylene
Acid n-octyl, Sodium Caseinate, slag, white carbon, dolomite dust, manganese dioxide, kieselguhr, dibutyl phthalate, poly-second
Enol, tert-butylhydroquinone, phthalic anhydride and H2After O, it is significantly reduced the size of accumulative wastage, hence it is evident that improve
Leak stopping performance.
Additionally in the 7 of embodiment 1) in obtain described drilling fluid with after acid-soluble pressurization sealing agent, then weigh parts by weight
Be 15 acid-soluble chemical substance material, parts by weight be 5 organoclay powder, parts by weight be 5 inorganic mineral, weight portion
Number is the water-absorbing resin of 5,7) in the acid-soluble pressurization sealing agent of described drilling fluid that obtains be 15 with weighing parts by weight
Inorganic mineral, parts by weight that organoclay powder that acid-soluble chemical substance material, parts by weight are 5, parts by weight are 5 are 5
Water-absorbing resin phase mix homogeneously after, then be mixed for leak stopping with for the water of the weight of the mixture of gained 2 times after mixing homogeneously,
Can also block up for leak stopping, thus obtained this with for the drilling fluid mixed of the weight of the mixture of gained 3 times after mixing homogeneously
The comprcssive strength of agent maintenance 24h is 8.5MPa, and the room temperature acid-soluble ratio of solidifying body is 92%；On-the-spot easily preparation, easy construction, use
Prove, drop ply bearing capacity 0.49g/cm can be improved3Equivalent drilling fluid density.In a word the comprcssive strength of its this blocking agent obtained >=
8MPa, room temperature acid-soluble ratio >=90% of solidifying body；On-the-spot easily preparation, easy construction, use and prove, drop ply bearing capacity can be improved
0.4g/cm3Above equivalent drilling fluid density.This blocking agent is the most applicable it can also be used to workover treatment to payzone and non-payzone leakage
In leakage.
Embodiment 2
With reference to shown in Fig. 1-Fig. 2, drilling fluid with acid-soluble pressurization sealing agent, including following parts by weight raw material preparation and
Become: parts by weight are the friction resistance material of 15 parts, and parts by weight are the bridging materials of 48 parts, and parts by weight are the filling material of 38 parts
Material, parts by weight are the iron tailings sand of 53 parts, and parts by weight are the volcano ashes of 19 parts, and parts by weight are the wooden activity of 17 parts
Carbon powder, parts by weight are the nanometer zinc phosphate calcium of 9 parts, and parts by weight are the paraffin of 10 parts, and parts by weight are 11 parts polynary
Alcohol fatty acid ester, parts by weight are the titanium dioxide of 90 parts, and parts by weight are the admaic earth of 45 parts, and parts by weight are the Sargassum of 3 parts
Acid, parts by weight are the dimethyl diallyl ammonium chloride of 2 parts, and parts by weight are the polyvinyl acetate of 2 parts, and parts by weight are
The glyceryl monostearate of 2 parts, parts by weight are the travertine gelled material of 65 parts, and parts by weight are the copper oxide of 60 parts, weight
Number is the benzyl disulfide of 53 parts, and parts by weight are the α-n-octylcyanoacrylate of 31 parts, and parts by weight are the cheese of 35 parts
Protein acid sodium, parts by weight are the slag of 45 parts, and parts by weight are the white carbon of 93 parts, and parts by weight are the dolomite dust of 45 parts,
Parts by weight are the manganese dioxide of 40 parts, and parts by weight are the kieselguhr of 25 parts, and parts by weight are the phthalic acid two of 53 parts
Butyl ester, parts by weight are the polyvinyl alcohol of 35 parts, and parts by weight are the tert-butylhydroquinone of 53 parts, and parts by weight are 83 parts
Phthalic anhydride, parts by weight are the H of 100 parts2O。
The granularity of described iron tailings sand is 850um.
The granularity of described slag is 850um.
The described drilling fluid preparation method of acid-soluble pressurization sealing agent, step is as follows:
1) weighing the bridging materials that parts by weight are 48 parts, parts by weight are that the packing material of 38 parts mixes all at normal temperatures
Even；
2) weighing the friction resistance material that parts by weight are 15 parts to be added thereto, under room temperature, mix homogeneously is treated as initial ingredients
With；
3) weighing the iron tailings sand that parts by weight are 53 parts, parts by weight are the volcano ashes of 19 parts and parts by weight are 17
The wood activated charcoal powder of part, mix homogeneously is stand-by as the second dispensing；
4) weighing the nanometer zinc phosphate calcium that parts by weight are 9 parts, parts by weight are the paraffin of 10 parts and parts by weight are 11
Part polyol fatty acid ester mix homogeneously, be then warmed up to 98 DEG C and lasting 5h, as the 3rd dispensing, subsequently the second dispensing
Also mix homogeneously with the 3rd dispensing, be warmed up to 91 DEG C and lasting 6.5h, then carry out wind cooling temperature lowering to after obtaining wind cooling temperature lowering
Material, whether the granularity of the material after inspection wind cooling temperature lowering is in the scope of 30um-9000um, if being not located at 30um-
In the scope of 9000um, filter is used to filter so that the granularity of the material after filtering is in the scope of 30um-9000um,
Material after filtering, whether not less than 99.9%, if less than 99.9%, is just held by the mass dryness fraction of the material after inspection is filtered subsequently
Sector-style is done dehumidifying and is made the mass dryness fraction of the material after filtering be not less than 99.9%, then using the material after filtration as the 4th dispensing
Stand-by；
5) weighing the titanium dioxide that parts by weight are 90 parts, parts by weight are the admaic earth of 45 parts, and parts by weight are the sea of 3 parts
Alginic acid, parts by weight are the dimethyl diallyl ammonium chloride of 2 parts, and parts by weight are polyvinyl acetate and the weight of 2 parts
Number is the glyceryl monostearate of 2 parts, stand-by as the 5th dispensing after mix homogeneously；
6) weighing the travertine gelled material that parts by weight are 65 parts, parts by weight are the copper oxide of 60 parts, and parts by weight are
The benzyl disulfide of 53 parts, parts by weight are the α-n-octylcyanoacrylate of 31 parts, and parts by weight are the Sodium Caseinate of 35 parts,
Parts by weight are the slag of 45 parts, and parts by weight are the white carbon of 93 parts, and parts by weight are the dolomite dust of 45 parts, parts by weight
Being the manganese dioxide of 40 parts, parts by weight are the kieselguhr of 25 parts and H that parts by weight are 100 parts2O, mix homogeneously, heats up
To 197 DEG C and persistently 45 seconds, then weighing the dibutyl phthalate that parts by weight are 53 parts, parts by weight are the poly-second of 35 parts
Enol, parts by weight are the tert-butylhydroquinone of 53 parts and phthalic anhydride that parts by weight are 83 parts adds, mixed
After closing uniformly stand-by as the 6th dispensing；
7) finally described initial ingredients, the 4th dispensing, the 5th dispensing are mixed homogeneously with the 6th dispensing just obtained described
Drilling fluid is with acid-soluble pressurization sealing agent.
Described 3), 4), 5), 6) and 7) described in mix homogeneously operation be and first pass through the motor shaft of motor and stirring
The rotating shaft mixing device is tied, and starts motor to drive agitator to mix with this, finally reaches the purpose of mix homogeneously；
The connecting structure of the motor shaft of described motor and the rotating shaft of agitator is: the right head of the motor shaft A1 of described motor
For the first flaring mouth A10 in flaring shape from left to right, the left head of the rotating shaft A2 of described agitator be right-to-left be flaring
Second flaring mouth A20 of shape, the inner surface at described first flaring mouth A10 arranges card T-Ring A3, described second flaring mouth A20
Inner surface have the buckling groove A4 with described card T-Ring A3 phase clamping；First sleeve A7 is around being connected to described first flaring
On the outer surface of mouth A10, the floor projection of described first sleeve A10 is the annular profile that two concentric circulars are constituted, and these two same
Heart circle is the first internally positioned inner circle and the first externally-located cylindrical composition, and the second inner circle is positioned at the first flaring mouth A10
The region enclosed of the outline of floor projection in；Second sleeve A8 is around the outer surface being connected to described second flaring mouth A20
On, the floor projection of described second sleeve A8 is the annular profile that two concentric circulars are constituted, and these two concentric circulars are internally positioned
The second inner circle and externally-located second cylindrical constitute, and the second inner circle is positioned at outside the floor projection of the second flaring mouth A20
In the region that profile is enclosed；Rivet through rivet A9 phase between described first sleeve A7 and the second sleeve A8, around described first
Also fit on flaring mouth A10 outer surface the first copper alloy ring A5, also fits on described second flaring mouth A20 outer surface
Second copper alloy ring A6, described card T-Ring A3 are the card T-Ring with ellipticity rubber ring A11, and described buckling groove A4 is with ellipse
The buckling groove of round shape rubber ring；By the motor shaft of described motor and the connecting structure of the rotating shaft of agitator, the motor shaft of motor
The connection of the rotating shaft with agitator can be broken away from the complicated accessory of existing mandrel connector and realize connection, in conjunction with the first copper alloy
Ring A5 and the second copper alloy ring A6, even if also will not connect illusive asking under the stress effect of the rotary course of axle
Topic, also would not allow motor shaft or rotating shaft the problem bent and stretched occur, and the card T-Ring of additionally mutually clamping and buckling groove, also plus institute
Stating card T-Ring A3 is the card T-Ring with ellipticity rubber ring A11, and described buckling groove A4 is the clamping with ellipticity rubber ring
Groove, thus can improve the tightness degree of combination, the problem not havinging damage further.
Then the heat reflectivity of acid-soluble pressurization sealing agent of the drilling fluid obtained by the present embodiment is tested, obtain
The test result of table 4:
Table 4
| Embodiment sequence number | Heat reflectivity |
| 2 | 98.7% |
The most also to the drilling fluid obtained by the present embodiment bearing capacity of acid-soluble pressurization sealing agent and accumulative leakage
Amount is tested, and concrete test mode is as follows:
Experimental apparatus: number of patent application is lost circulation simulator in 201020100879.4；
Experiment condition: simulation drop ply module is 2mm crack, experimental temperature 80 DEG C.
After testing, obtain the test result of table 5:
Table 5
| Embodiment sequence number | Bear pressure/MPa | Accumulative wastage/ml |
| 2 | 42.4 | 302.1 |
Finally the closure efficiency of acid-soluble pressurization sealing agent of the drilling fluid obtained by the present embodiment is tested, tool
Body test mode is as follows:
With the gluing quartz sand of epoxy resin, prepare artificial core, artificial core diameter 2.5cm, length 8cm, test artificial
The clear water permeability of rock core, is drilled to hollow structure by the inside center of artificial core, makes artificial core become internal diameter 1.8cm, outer
Footpath 2.5cm, the hollow circular ring of length 8cm, the drilling fluid of the present embodiment is injected separately in rock core with acid-soluble pressurization sealing agent,
Maintenance 10h at a set temperature, the permeability of clear water after test maintenance, experimental result is shown in Table 6:
Table 6
Via being filled into iron tailings sand, volcano ashes and wood activated charcoal powder, it is possible to further ensure that described drilling fluid is used
The loose feature of acid-soluble pressurization sealing agent and the feature preventing high temperature attack, be more able to ensure that described drilling fluid holds with acid-soluble
The leak stopping feature of pressure sealing agent, volcano ashes can improve the drilling fluid feature with the sealed blockage of acid-soluble pressurization sealing agent,
Improving plugging effect, wood activated charcoal powder is with the excellent feature stopping high temperature attack, it is possible to improve drilling fluid acid molten
Property pressurization sealing agent stop high temperature attack feature, iron tailings sand improve the acid-soluble pressurization sealing agent of drilling fluid loosen
It is molten that feature, additionally nanometer zinc phosphate calcium, paraffin and polyol fatty acid ester the most further improve the acid of described drilling fluid
Property pressurization sealing agent loose feature with prevent the feature of high temperature attack, understand from embodiment, nanometer zinc phosphate calcium, paraffin and
Polyol fatty acid ester ensure that this drilling fluid characteristic with acid-soluble pressurization sealing agent.Through the checking of embodiment, described brill
Well liquid is with the heat reflectivity of acid-soluble pressurization sealing agent all more than 98%, and sealing ratiod is all more than 99% so that prevent high temperature
Invasion and attack and the excellent performance of sealed blockage, the most described drilling fluid is the best by the loose performance of acid-soluble pressurization sealing agent, Bu Huining
Form and stick together, so make operational approach be not difficult, service requirement is loose, the effect of resisting the invasion and attack of periphery particulate solid is good, will not
Occur wrinkling bursting apart, leak stopping performance the best, with practical advantage, titanium dioxide, admaic earth, alginic acid, dimethyl diene
The addition of propyl ammonium chloride, polyvinyl acetate and glyceryl monostearate, at drilling fluid with acid-soluble pressurization sealing agent quilt
When extraneous spininess object is pierced, it becomes possible to the relaxing the bowels with lubricant drugs of invading at liquid can become greatly by volume, is sealed so that pierce position
Close, the advantage with automatic reduction.Additionally adding travertine gelled material, copper oxide, benzyl disulfide, alpha-cyano propylene
Acid n-octyl, Sodium Caseinate, slag, white carbon, dolomite dust, manganese dioxide, kieselguhr, dibutyl phthalate, poly-second
Enol, tert-butylhydroquinone, phthalic anhydride and H2After O, it is significantly reduced the size of accumulative wastage, hence it is evident that improve
Leak stopping performance.
In embodiment 2 7) in obtain described drilling fluid with after acid-soluble pressurization sealing agent, then to weigh parts by weight be 30
Part acid-soluble chemical substance material, parts by weight be 15 parts organoclay powder, parts by weight be 18 parts inorganic mineral, weight
Amount number be 15 parts water-absorbing resin, parts by weight be 20 parts cement, parts by weight be 10 parts fibrous material, 7) in must
To described drilling fluid with acid-soluble pressurization sealing agent with the acid-soluble chemical substance material that parts by weight are 30 parts, parts by weight
Be 15 parts organoclay powder, parts by weight be 18 parts inorganic mineral, parts by weight be 15 parts water-absorbing resin, weight portion
Number is the cement of 20 parts, after parts by weight are the fibrous material phase mix homogeneously of 10 parts, then with for gained mixed after mixing homogeneously
The water of the weight of compound 5 times is mixed for leak stopping, it is also possible to for the drilling well of the weight of the mixture of gained 7 times after mixing homogeneously
Liquid is mixed for leak stopping.The comprcssive strength of thus obtained this blocking agent maintenance 24h is 8.9MPa, and the room temperature acid-soluble ratio of solidifying body is
95%；On-the-spot easily preparation, easy construction, use and prove, drop ply bearing capacity can be improved and reach 0.55g/cm3Equivalent drilling well is liquid-tight
Degree.Comprcssive strength >=the 8MPa of its this blocking agent obtained in a word, room temperature acid-soluble ratio >=90% of solidifying body；On-the-spot easily preparation, executes
Work is convenient, uses and proves, can improve drop ply bearing capacity 0.4g/cm3Above equivalent drilling fluid density.This blocking agent is to payzone and non-
Payzone leakage is the most applicable it can also be used to leakage in workover treatment.
Embodiment 3
With reference to shown in Fig. 1-Fig. 2, drilling fluid with acid-soluble pressurization sealing agent, including following parts by weight raw material preparation and
Become: parts by weight are the friction resistance material of 20 parts, and parts by weight are the bridging materials of 50 parts, and parts by weight are the filling material of 40 parts
Material, parts by weight are the iron tailings sand of 55 parts, and parts by weight are the volcano ashes of 21 parts, and parts by weight are the wooden activity of 18 parts
Carbon powder, parts by weight are the nanometer zinc phosphate calcium of 12 parts, and parts by weight are the paraffin of 12 parts, and parts by weight are 13 parts polynary
Alcohol fatty acid ester, parts by weight are the titanium dioxide of 100 parts, and parts by weight are the admaic earth of 50 parts, and parts by weight are the Sargassum of 4 parts
Acid, parts by weight are the dimethyl diallyl ammonium chloride of 2 parts, and parts by weight are the polyvinyl acetate of 2 parts, and parts by weight are
The glyceryl monostearate of 2 parts, parts by weight are the travertine gelled material of 70 parts, and parts by weight are the copper oxide of 62 parts, weight
Number is the benzyl disulfide of 55 parts, and parts by weight are the α-n-octylcyanoacrylate of 32 parts, and parts by weight are the cheese of 40 parts
Protein acid sodium, parts by weight are the slag of 60 parts, and parts by weight are the white carbon of 95 parts, and parts by weight are the dolomite dust of 60 parts,
Parts by weight are the manganese dioxide of 50 parts, and parts by weight are the kieselguhr of 30 parts, and parts by weight are the phthalic acid two of 55 parts
Butyl ester, parts by weight are the polyvinyl alcohol of 40 parts, and parts by weight are the tert-butylhydroquinone of 55 parts, and parts by weight are 85 parts
Phthalic anhydride, parts by weight are the H of 120 parts2O。
The granularity of described iron tailings sand is 1500um.
The granularity of described slag is 1500um.
The described drilling fluid preparation method of acid-soluble pressurization sealing agent, step is as follows:
1) weighing the bridging materials that parts by weight are 50 parts, parts by weight are that the packing material of 40 parts mixes all at normal temperatures
Even；
2) weighing the friction resistance material that parts by weight are 20 parts to be added thereto, under room temperature, mix homogeneously is treated as initial ingredients
With；
3) weighing the iron tailings sand that parts by weight are 55 parts, parts by weight are the volcano ashes of 21 parts and parts by weight are 18
The wood activated charcoal powder of part, mix homogeneously is stand-by as the second dispensing；
4) weighing the nanometer zinc phosphate calcium that parts by weight are 12 parts, parts by weight are the paraffin of 12 parts and parts by weight are 13
Part polyol fatty acid ester mix homogeneously, be then warmed up to 105 DEG C and lasting 6h, as the 3rd dispensing, join second subsequently
Material is also mixed homogeneously with the 3rd dispensing, is warmed up to 92 DEG C and lasting 7h, then carries out wind cooling temperature lowering to after obtaining wind cooling temperature lowering
Material, whether the granularity of the material after inspection wind cooling temperature lowering is in the scope of 30um-9000um, if being not located at 30um-
In the scope of 9000um, filter is used to filter so that the granularity of the material after filtering is in the scope of 30um-9000um,
Material after filtering, whether not less than 99.9%, if less than 99.9%, is just held by the mass dryness fraction of the material after inspection is filtered subsequently
Sector-style is done dehumidifying and is made the mass dryness fraction of the material after filtering not less than 99.9%, then the material after filtration is treated as the 4th dispensing
With；
5) weighing the titanium dioxide that parts by weight are 100 parts, parts by weight are the admaic earth of 50 parts, and parts by weight are 4 parts
Alginic acid, parts by weight are the dimethyl diallyl ammonium chloride of 2 parts, and parts by weight are polyvinyl acetate and the weight of 2 parts
Amount number is the glyceryl monostearate of 2 parts, stand-by as the 5th dispensing after mix homogeneously；
6) weighing the travertine gelled material that parts by weight are 70 parts, parts by weight are the copper oxide of 62 parts, and parts by weight are
The benzyl disulfide of 55 parts, parts by weight are the α-n-octylcyanoacrylate of 32 parts, and parts by weight are the Sodium Caseinate of 40 parts,
Parts by weight are the slag of 60 parts, and parts by weight are the white carbon of 95 parts, and parts by weight are the dolomite dust of 60 parts, parts by weight
Being the manganese dioxide of 50 parts, parts by weight are the kieselguhr of 30 parts and H that parts by weight are 120 parts2O, mix homogeneously, heats up
To 201 DEG C and persistently 60 seconds, then weighing the dibutyl phthalate that parts by weight are 55 parts, parts by weight are the poly-second of 40 parts
Enol, parts by weight are the tert-butylhydroquinone of 55 parts and phthalic anhydride that parts by weight are 85 parts adds, mixed
After closing uniformly stand-by as the 6th dispensing；
7) finally described initial ingredients, the 4th dispensing, the 5th dispensing are mixed homogeneously with the 6th dispensing just obtained described
Drilling fluid is with acid-soluble pressurization sealing agent.
Described 3), 4), 5), 6) and 7) described in mix homogeneously operation be and first pass through the motor shaft of motor and stirring
The rotating shaft mixing device is tied, and starts motor to drive agitator to mix with this, finally reaches the purpose of mix homogeneously；
The connecting structure of the motor shaft of described motor and the rotating shaft of agitator is: the right head of the motor shaft A1 of described motor
For the first flaring mouth A10 in flaring shape from left to right, the left head of the rotating shaft A2 of described agitator be right-to-left be flaring
Second flaring mouth A20 of shape, the inner surface at described first flaring mouth A10 arranges card T-Ring A3, described second flaring mouth A20
Inner surface have the buckling groove A4 with described card T-Ring A3 phase clamping；First sleeve A7 is around being connected to described first flaring mouth
On the outer surface of A10, the floor projection of described first sleeve A10 is the annular profile that two concentric circulars are constituted, and these two with one heart
Circle is constituted for the first internally positioned inner circle and the first externally-located cylindrical, and the second inner circle is positioned at the first flaring mouth A10's
In the region that the outline of floor projection is enclosed；Second sleeve A8 cincture is connected on the outer surface of described second flaring mouth A20,
The floor projection of described second sleeve A8 is the annular profile that two concentric circulars are constituted, and these two concentric circulars are internally positioned the
Two inner circles and externally-located second cylindrical are constituted, and the second inner circle is positioned at the outline of floor projection of the second flaring mouth A20
In the region enclosed；Rivet through rivet A9 phase between described first sleeve A7 and the second sleeve A8, around described first flaring
Also fit on mouthful A10 outer surface the first copper alloy ring A5, also fits second on described second flaring mouth A20 outer surface
Copper alloy ring A6, described card T-Ring A3 are the card T-Ring with ellipticity rubber ring A11, and described buckling groove A4 is with ellipticity
The buckling groove of rubber ring；By the motor shaft of described motor and the connecting structure of the rotating shaft of agitator, the motor shaft of motor and stirring
The connection of the rotating shaft mixing device can be broken away from the complicated accessory of existing mandrel connector and realize connection, in conjunction with the first copper alloy ring A5
With the second copper alloy ring A6, even if illusive problem also will not be connect under the stress effect of the rotary course of axle, also
Motor shaft or rotating shaft would not be allowed the problem bent and stretched occur, and the card T-Ring of additionally mutually clamping and buckling groove, also plus described card
T-Ring A3 is the card T-Ring with ellipticity rubber ring A11, and described buckling groove A4 is the buckling groove with ellipticity rubber ring, this
Sample just can improve the tightness degree of combination, the problem not havinging damage further.
Then the heat reflectivity of acid-soluble pressurization sealing agent of the drilling fluid obtained by the present embodiment is tested, obtain
The test result of table 7:
Table 7
| Embodiment sequence number | Heat reflectivity |
| 3 | 99.1% |
The most also to the drilling fluid obtained by the present embodiment bearing capacity of acid-soluble pressurization sealing agent and accumulative leakage
Amount is tested, and concrete test mode is as follows:
Experimental apparatus: number of patent application is lost circulation simulator in 201020100879.4；
Experiment condition: simulation drop ply module is 2mm crack, experimental temperature 80 DEG C.
After testing, obtain the test result of table 8:
Table 8
| Embodiment sequence number | Bear pressure/MPa | Accumulative wastage/ml |
| 3 | 42.4 | 302.1 |
Finally the closure efficiency of acid-soluble pressurization sealing agent of the drilling fluid obtained by the present embodiment is tested, tool
Body test mode is as follows:
With the gluing quartz sand of epoxy resin, prepare artificial core, artificial core diameter 2.5cm, length 8cm, test artificial
The clear water permeability of rock core, is drilled to hollow structure by the inside center of artificial core, makes artificial core become internal diameter 1.8cm, outer
Footpath 2.5cm, the hollow circular ring of length 8cm, the drilling fluid of the present embodiment is injected separately in rock core with acid-soluble pressurization sealing agent,
Maintenance 10h at a set temperature, the permeability of clear water after test maintenance, experimental result is shown in Table 9:
Table 9
Via being filled into iron tailings sand, volcano ashes and wood activated charcoal powder, it is possible to further ensure that described drilling fluid is used
The loose feature of acid-soluble pressurization sealing agent and the feature preventing high temperature attack, be more able to ensure that described drilling fluid holds with acid-soluble
The leak stopping feature of pressure sealing agent, volcano ashes can improve the drilling fluid feature with the sealed blockage of acid-soluble pressurization sealing agent,
Improving plugging effect, wood activated charcoal powder is with the excellent feature stopping high temperature attack, it is possible to improve drilling fluid acid molten
Property pressurization sealing agent stop high temperature attack feature, iron tailings sand improve the acid-soluble pressurization sealing agent of drilling fluid loosen
It is molten that feature, additionally nanometer zinc phosphate calcium, paraffin and polyol fatty acid ester the most further improve the acid of described drilling fluid
Property pressurization sealing agent loose feature with prevent the feature of high temperature attack, understand from embodiment, nanometer zinc phosphate calcium, paraffin and
Polyol fatty acid ester ensure that this drilling fluid characteristic with acid-soluble pressurization sealing agent.Through the checking of embodiment, described brill
Well liquid is with the heat reflectivity of acid-soluble pressurization sealing agent all more than 98%, and sealing ratiod is all more than 99% so that prevent high temperature
Invasion and attack and the excellent performance of sealed blockage, the most described drilling fluid is the best by the loose performance of acid-soluble pressurization sealing agent, Bu Huining
Form and stick together, so make operational approach be not difficult, service requirement is loose, the effect of resisting the invasion and attack of periphery particulate solid is good, will not
Occur wrinkling bursting apart, leak stopping performance the best, with practical advantage, titanium dioxide, admaic earth, alginic acid, dimethyl diene
The addition of propyl ammonium chloride, polyvinyl acetate and glyceryl monostearate, at drilling fluid with acid-soluble pressurization sealing agent quilt
When extraneous spininess object is pierced, it becomes possible to the relaxing the bowels with lubricant drugs of invading at liquid can become greatly by volume, is sealed so that pierce position
Close, the advantage with automatic reduction.Additionally adding travertine gelled material, copper oxide, benzyl disulfide, alpha-cyano propylene
Acid n-octyl, Sodium Caseinate, slag, white carbon, dolomite dust, manganese dioxide, kieselguhr, dibutyl phthalate, poly-second
Enol, tert-butylhydroquinone, phthalic anhydride and H2After O, it is significantly reduced the size of accumulative wastage, hence it is evident that improve
Leak stopping performance.
In embodiment 3 7) in obtain described drilling fluid with after acid-soluble pressurization sealing agent, then to weigh parts by weight be 45
Part acid-soluble chemical substance material, parts by weight be 25 parts organoclay powder, parts by weight be 30 parts inorganic mineral, weight
Amount number be 25 parts water-absorbing resin, parts by weight be 40 parts cement, parts by weight be 20 parts fibrous material, 7) in must
To described drilling fluid with acid-soluble pressurization sealing agent with the acid-soluble chemical substance material that parts by weight are 45 parts, parts by weight
Be 25 parts organoclay powder, parts by weight be 30 parts inorganic mineral, parts by weight be 25 parts water-absorbing resin, parts by weight
Be the cement of 40 parts, after parts by weight are the fibrous material phase mix homogeneously of 20 parts, then with for the mixing of gained after mixing homogeneously
The water of the weight of thing 7 times is mixed for leak stopping, it is also possible to for the drilling well of the weight of the mixture of gained 10 times after mixing homogeneously
Liquid is mixed for leak stopping.The comprcssive strength of thus obtained this blocking agent maintenance 24h is 8.5MPa, and the room temperature acid-soluble ratio of solidifying body is
92%；On-the-spot easily preparation, easy construction, use and prove, drop ply bearing capacity 0.49g/cm can be improved3Equivalent drilling fluid density.
Comprcssive strength >=the 8MPa of its this blocking agent obtained in a word, room temperature acid-soluble ratio >=90% of solidifying body；On-the-spot easily preparation, construction party
Just, use and prove, drop ply bearing capacity 0.4g/cm can be improved3Above equivalent drilling fluid density.This blocking agent is to payzone and non-payzone
Leakage is the most applicable it can also be used to leakage in workover treatment.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any technology people being familiar with this specialty
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit of the present invention,
Within the spirit and principles in the present invention, any simple amendment, equivalent and the improvement etc. that above example is made, the most still
Within belonging to the protection domain of technical solution of the present invention.
Claims (7)
1. a drilling fluid is with acid-soluble pressurization sealing agent, it is characterised in that include that the raw material of following parts by weight is prepared from:
The friction resistance material of 10-20 parts by weight, the bridging materials of 45-50 parts by weight, the packing material of 35-40 parts by weight, 50-55
The iron tailings sand of parts by weight, the volcano ashes of 16-21 parts by weight, the wood activated charcoal powder of 15-18 parts by weight, 6-12
The nanometer zinc phosphate calcium of parts by weight, the paraffin of 8-12 parts by weight, the polyol fatty acid ester of 8-13 parts by weight, 80-100
The titanium dioxide of parts by weight, the admaic earth of 40-50 parts by weight, the alginic acid of 2-4 parts by weight, the diformazan of 1-2 parts by weight
Base diallyl ammonium chloride, the polyvinyl acetate of 1-2 parts by weight, the glyceryl monostearate of 1-2 parts by weight, 60-70
The travertine gelled material of parts by weight, the copper oxide of 58-62 parts by weight, the benzyl disulfide of 50-55 parts by weight, 30-32
The α-n-octylcyanoacrylate of parts by weight, the Sodium Caseinate of 30-40 parts by weight, the slag of 30-60 parts by weight, 90-
The white carbon of 95 parts by weight, the dolomite dust of 30-60 parts by weight, the manganese dioxide of 30-50 parts by weight, 20-30 weight
The kieselguhr of number, the dibutyl phthalate of 50-55 parts by weight, the polyvinyl alcohol of 30-40 parts by weight, 50-55 weight
The tert-butylhydroquinone of amount number, the phthalic anhydride of 80-85 parts by weight, the H of 80-120 parts by weight2O。
Drilling fluid the most according to claim 1 is with acid-soluble pressurization sealing agent, it is characterised in that raw material also includes 15-45 weight
The amount acid-soluble chemical substance material of number, the organoclay powder of 5-25 parts by weight, the inorganic mineral of 5-30 parts by weight, 5-
The water-absorbing resin of 25 parts by weight, the cement of 0-40 parts by weight, the fibrous material of 0-20 parts by weight.
Drilling fluid the most according to claim 1 is with acid-soluble pressurization sealing agent, it is characterised in that the grain of described iron tailings sand
Degree is 200um-1500um.
Drilling fluid the most according to claim 1 is with acid-soluble pressurization sealing agent, it is characterised in that the granularity of described slag is
200um-1500um。
The drilling fluid the most according to claim 1 preparation method of acid-soluble pressurization sealing agent, it is characterised in that step is such as
Under:
1) bridging materials of 45-50 parts by weight, the packing material of 35-40 parts by weight mix homogeneously at normal temperatures are weighed；
2) friction resistance material weighing 10-20 parts by weight is added thereto, and under room temperature, mix homogeneously is stand-by as initial ingredients；
3) the iron tailings sand of 50-55 parts by weight is weighed, the volcano ashes of 16-21 parts by weight and the wood of 15-18 parts by weight
Activated carbon powder, mix homogeneously is stand-by as the second dispensing；
4) the nanometer zinc phosphate calcium of 6-12 parts by weight is weighed, the paraffin of 8-12 parts by weight and the polyhydric alcohol of 8-13 parts by weight
Fatty acid ester mix homogeneously, is then warmed up to 90-105 DEG C and lasting 4-6h, as the 3rd dispensing, subsequently the second dispensing and the
Three dispensings also mix homogeneously, is warmed up to 90-92 DEG C and lasting 6-7h, then carries out wind cooling temperature lowering to obtain the thing after wind cooling temperature lowering
Material, whether the granularity of the material after inspection wind cooling temperature lowering is in the scope of 30um-9000um, if being not located at 30um-
In the scope of 9000um, filter is used to filter so that the granularity of the material after filtering is in the scope of 30um-9000um,
Material after filtering, whether not less than 99.9%, if less than 99.9%, is just held by the mass dryness fraction of the material after inspection is filtered subsequently
Sector-style is done dehumidifying and is made the mass dryness fraction of the material after filtering not less than 99.9%, then the material after filtration is treated as the 4th dispensing
With；
5) titanium dioxide of 80-100 parts by weight, the admaic earth of 40-50 parts by weight, the alginic acid of 2-4 parts by weight, 1-are weighed
The dimethyl diallyl ammonium chloride of 2 parts by weight, the polyvinyl acetate of 1-2 parts by weight and the list of 1-2 parts by weight
Tristerin, stand-by as the 5th dispensing after mix homogeneously；
6) travertine gelled material of 60-70 parts by weight, the copper oxide of 58-62 parts by weight, the two of 50-55 parts by weight are weighed
Benzyl two sulfur, the α-n-octylcyanoacrylate of 30-32 parts by weight, the Sodium Caseinate of 30-40 parts by weight, 30-60 weight
The slag of number, the white carbon of 90-95 parts by weight, the dolomite dust of 30-60 parts by weight, the dioxy of 30-50 parts by weight
Change manganese, the kieselguhr of 20-30 parts by weight and the H of 80-120 parts by weight2O, mix homogeneously, it is warmed up to 193-201 DEG C also
Continue the 30-60 second, then weigh the dibutyl phthalate of 50-55 parts by weight, the polyvinyl alcohol of 30-40 parts by weight, 50-
The tert-butylhydroquinone of 55 parts by weight and the phthalic anhydride of 80-85 parts by weight add, and make after mix homogeneously
It is that the 6th dispensing is stand-by；
7) finally described initial ingredients, the 4th dispensing, the 5th dispensing are mixed homogeneously with the 6th dispensing and just obtained described drilling well
Liquid is with acid-soluble pressurization sealing agent.
The drilling fluid the most according to claim 5 preparation method of acid-soluble pressurization sealing agent, it is characterised in that described
3), 4), 5), 6) and 7) described in mix homogeneously operation be and first pass through the rotating shaft connection of the motor shaft of motor and agitator
Get up, start motor to drive agitator to mix with this, finally reach the purpose of mix homogeneously；
The connecting structure of the motor shaft of described motor and the rotating shaft of agitator is: the right head of the motor shaft of described motor is for from left
The first flaring mouth in flaring shape to the right, the left head of the rotating shaft of described agitator be right-to-left be the second flaring of flaring shape
Mouthful, the inner surface at described first flaring mouth arranges card T-Ring, and the inner surface of described second flaring mouth has with described clamping
The buckling groove of ring phase clamping；First sleeve cincture is connected on the outer surface of described first flaring mouth, the water of described first sleeve
Flat being projected as the annular profile that two concentric circulars are constituted, these two concentric circulars are the first internally positioned inner circle and externally-located
First cylindrical is constituted, and the region that the outline of the floor projection that the second inner circle is positioned at the first flaring mouth is enclosed；Second sleeve
Around being connected on the outer surface of described second flaring mouth, the floor projection of described second sleeve is the ring that two concentric circulars are constituted
Shape profile, these two concentric circulars are the second internally positioned inner circle and the second externally-located cylindrical composition, and the second inner circle position
In the region that the outline of the floor projection of the second flaring mouth is enclosed；Through rivet phase between described first sleeve the second sleeve
Riveting, the first copper alloy ring of also fitting on described first flaring mouth outer surface, around described second flaring mouth outer surface
On also fit the second copper alloy ring, described card T-Ring is the card T-Ring with ellipticity rubber ring, described buckling groove be with
The buckling groove of ellipticity rubber ring.
The drilling fluid the most according to claim 5 preparation method of acid-soluble pressurization sealing agent, it is characterised in that 7) in
Obtain described drilling fluid with after acid-soluble pressurization sealing agent, then weigh the acid-soluble chemical substance material of 15-45 parts by weight, 5-
The organoclay powder of 25 parts by weight, the inorganic mineral of 5-30 parts by weight, the water-absorbing resin of 5-25 parts by weight, 0-40 weight
The cement of number, the fibrous material of 0-20 parts by weight, 7) in the acid-soluble pressurization sealing agent of described drilling fluid that obtains with
The acid-soluble chemical substance material of 15-45 parts by weight, the organoclay powder of 5-25 parts by weight, the inorganic ore deposit of 5-30 parts by weight
Material, the water-absorbing resin of 5-25 parts by weight, the cement of 0-40 parts by weight mix mutually with the fibrous material of 0-20 parts by weight
After Jun Yun, then be mixed for leak stopping with for the water of weight 2-7 times of the mixture of gained after mixing homogeneously, it is also possible to for mixing
After uniformly, the drilling fluid mixed of weight 3-10 times of the mixture of gained is for leak stopping.
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| CN201610559685.2A CN106190070A (en) | 2016-07-15 | 2016-07-15 | Drilling fluid acid-soluble pressurization sealing agent and preparation method |
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| CN201610559685.2A CN106190070A (en) | 2016-07-15 | 2016-07-15 | Drilling fluid acid-soluble pressurization sealing agent and preparation method |
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| CN107939383A (en) * | 2017-11-14 | 2018-04-20 | 西南石油大学 | A kind of method for expanding narrow ' Safe Density Windows |
| CN109735311A (en) * | 2019-01-22 | 2019-05-10 | 北京宏勤石油助剂有限公司 | A kind of drilling fluid environment-friendly type sealing agent and preparation method thereof |
| CN110105934A (en) * | 2019-04-19 | 2019-08-09 | 河南省遨太化工有限公司 | A kind of drilling fluid acid-soluble pressurization sealing agent and preparation method |
| CN112745815A (en) * | 2019-10-30 | 2021-05-04 | 中国石油天然气股份有限公司 | Leak-proof leak-stopping material and preparation method thereof |
| CN117070202A (en) * | 2023-10-17 | 2023-11-17 | 西南石油大学 | Acid-soluble high-strength consolidation plugging agent and preparation method thereof |
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