CN110002798A - Antileakage Cement Slurry is used in a kind of well cementation - Google Patents
Antileakage Cement Slurry is used in a kind of well cementation Download PDFInfo
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- CN110002798A CN110002798A CN201810012282.5A CN201810012282A CN110002798A CN 110002798 A CN110002798 A CN 110002798A CN 201810012282 A CN201810012282 A CN 201810012282A CN 110002798 A CN110002798 A CN 110002798A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- C09K2208/18—Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts
Abstract
The invention discloses a kind of well cementation Antileakage Cement Slurrys, belong to oil gas well cementing operation technical field.The Antileakage Cement Slurry includes following components: water, oil-well cement, bridge particle, quartz sand, SILICA FUME and cement additive；The median particle size of the oil-well cement is 10 μm~30 μm；The partial size of the bridge particle is that the formation at target locations hole that is averaged shouts the 1/2~2/3 of diameter or average crack width；The partial size of the quartz sand is 180 μm~425 μm；The partial size of the silicon powder is 0.1 μm~0.3 μm.The rational gradation composition between granular materials that the Antileakage Cement Slurry passes through different-grain diameter, bridge blinding is formed, to effectively block the pore formation easily missed, and caused inductivity fracture formation is acted on by pressure difference, and bearing capacity is high, can effectively prevent the leakage in well cementing process.And the Behavior of Hardened Cement Paste compression strength formed after Antileakage Cement Slurry thickening is high, interface cementing strength is high, can be realized effective packing of oil-water-layer.
Description
Technical field
The present invention relates to oil gas well cementing operation technical field, in particular to Antileakage Cement Slurry is used in a kind of well cementation.
Background technique
Well cementation is to inject cement slurry by the way that casing to be lowered into well, and into the annular space between stratum and casing,
It is one of the important link of oil gas well drilling engineering by the process of the oil-water-layer packing in wellbore after cement slurry sets.Well cementation
In the process since the high pump pressure bring annular space of the annular space and cementing operation on highdensity cement slurry sleeve pipe and stratum is high
Frictional resistance makes the pressure difference of annular space slurry column pressure and strata pressure be greater than pit shaft drilling well liquid columnpressure and strata pressure in drilling process
Pressure difference be therefore also easy to produce the inductivity crack as caused by High Pressure Difference in the low-pressure stratum of interval isolation, so that leakage occur, lead
Cause cement slurry to enter reservoir, polluted reservoir, it is serious will cause cement it is low return, the engineering accidents such as wellbore is scrapped.It is generated from leakage
The reason of from the point of view of, a kind of well cementation Antileakage Cement Slurry is provided, is very necessary to prevent in well cementing process that cement slurry leaks into stratum
's.
Currently used Antileakage Cement Slurry mainly includes three types: one is low density type cement slurry, the type cement
It is added with lightening material in slurry, so that well cementation annular space slurry column pressure be effectively reduced, realizes the purpose of leakproof；Another kind is to be added with
The cement slurry of the fiber of certain length, the type cement slurry form reticular structure using fiber, increase leakage resistance, realize leakproof
Purpose；Another is the combination of above two type cement slurry, i.e., the fiber of certain length is added in low-density cement mortar.
In the implementation of the present invention, the inventors discovered that in the prior art the prior art has at least the following problems:
The Behavior of Hardened Cement Paste compression strength formed after the thickening of low density type cement slurry is low, interface cementing strength is low, and adds fiber
Cement slurry bad dispersibility, the conglomeration of Yi Yinqi cement, blocking pipeline the problems such as.Therefore, existing Antileakage Cement Slurry is for hole
Property stratum and pressure difference act on caused by inductivity fracture formation it is not applicable.
Summary of the invention
In order to solve the above technical problems, the embodiment of the present invention provides one kind and makees suitable for pore formation and pressure difference
With the well cementation Antileakage Cement Slurry of caused inductivity fracture formation.
Specifically, including technical solution below:
The embodiment of the invention provides a kind of well cementation Antileakage Cement Slurry, the Antileakage Cement Slurry includes following parts by weight
Component:
Water, 36 parts~70 parts；
Oil-well cement, 60 parts~90 parts；
Bridge particle, 1 part~2 parts；
Quartz sand, 5 parts~10 parts；
SILICA FUME, 2 parts~5 parts；
Cement additive, 7 parts~15 parts；
The median particle size of the oil-well cement is 10 μm~30 μm；
The partial size of the bridge particle is that the formation at target locations hole that is averaged shouts the 1/2~2/3 of diameter or average crack width；
The partial size of the quartz sand is 180 μm~425 μm；
The partial size of the silicon powder is 0.1 μm~0.3 μm.
Optionally, the Antileakage Cement Slurry further include: hollow glass micropearl；The partial size of the hollow glass micropearl is 30 μm
~60 μm.
Optionally, the parts by weight of the hollow glass micropearl are 10 parts or less.
Optionally, the cement additive includes: fluid loss agent, dispersing agent, adjustable solidification agent, suspending agent and defoaming agent.
Optionally, the parts by weight of the fluid loss agent are 2 parts~3 parts, the parts by weight of the dispersing agent are 0.2 part~
0.6 part, the parts by weight of the adjustable solidification agent are 3 parts~5 parts, and the parts by weight of the suspending agent are 0.3 part~0.5 part, described
The parts by weight of defoaming agent are 2 parts~5 parts.
Optionally, the Antileakage Cement Slurry includes the component of following parts by weight:
Water, 360 parts；
Oil-well cement, 600 parts；
The bridge particle that partial size is 500 μm~660 μm, 10 parts；
Quartz sand, 50 parts；
SILICA FUME, 20 parts；
Fluid loss agent, 20 parts；
Dispersing agent, 2 parts；
Coagulant, 30 parts；
Suspending agent, 3 parts；
Defoaming agent, 20 parts.
Optionally, the Antileakage Cement Slurry includes the component of following parts by weight:
Water, 530g parts；
Oil-well cement, 750 parts；
The bridge particle that partial size is 1000 μm~1300 μm, 15 parts；
Quartz sand, 75 parts,
Hollow glass micropearl, 50 parts；
SILICA FUME, 35g parts；
Fluid loss agent, 25 parts；
Dispersing agent, 3.7 parts；
Coagulant, 40 parts；
Suspending agent, 4 parts；
Defoaming agent, 35 parts.
Optionally, the Antileakage Cement Slurry includes the component of following parts by weight:
Water, 700 parts；
Oil-well cement, 900 parts；
The bridge particle that partial size is 1500 μm~2000 μm, 20 parts；
Quartz sand, 100 parts；
Hollow glass micropearl, 100 parts；
SILICA FUME, 50 parts；
Fluid loss agent, 30 parts；
Dispersing agent, 6 parts；
Coagulant, 50 parts；
Suspending agent, 5 parts；
Defoaming agent, 50 parts.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
It is added to the granular materials of different-grain diameter in Antileakage Cement Slurry provided in an embodiment of the present invention, passes through different-grain diameter
Rational gradation composition between granular materials forms bridge blinding, can effectively block the pore formation easily missed, and made by pressure difference
With caused inductivity fracture formation, while bearing capacity is high, can effectively prevent the leakage in well cementing process.Also, this hair
It is capable of forming tightly packed body after the Antileakage Cement Slurry thickening that bright embodiment provides, the Behavior of Hardened Cement Paste compression strength height after thickening, boundary
Face cementing strength is high, can be realized effective packing of oil-water-layer.In addition, Antileakage Cement Slurry provided in an embodiment of the present invention is easy to mix
Mix uniformly, stability it is good, thickening time, rheological property are controllable, it can be ensured that construction safety.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, embodiment of the present invention is made below further detailed
Description.Unless otherwise defined, all technical terms used in the embodiment of the present invention all have usually manages with those skilled in the art
The identical meaning of solution.
The embodiment of the invention provides a kind of well cementation Antileakage Cement Slurry, which includes following parts by weight
Component:
Water, 36 parts~70 parts；
Oil-well cement, 60 parts~90 parts；
Bridge particle, 1 part~2 parts；
Quartz sand, 5 parts~10 parts；
SILICA FUME, 2 parts~5 parts；
Cement additive, 7 parts~15 parts；
Wherein, oil-well cement is the main component of Antileakage Cement Slurry, is played the cementing sealing in the rock stratum of casing and surrounding
Effect selects in the embodiment of the present invention median particle size for 10 μm~30 μm of oil-well cement；
Bridge particle is high intensity, aquation, resistance to compression, indeformable hard rigid particle, and the partial size of bridge particle is mesh
The mark stratum hole that is averaged shouts the 1/2~2/3 of diameter or average crack width, by the bridge formation of bridge particle, supporting role in hole
Blocking of building bridge is formed at gap or crack；
Quartz sand is a kind of amorphous material, and main component is silica, plays a part of to fill gap or crack, and energy
The compression strength and impermeability of the Behavior of Hardened Cement Paste formed after cement slurry thickening are enough improved, selects partial size for 40 in the embodiment of the present invention
The quartz sand of mesh~80 mesh (425 μm~180 μm)；
SILICA FUME be a kind of ash shape substance, main component be silica, rise it is tightly packed, increase cement strength with
And the effect of cement slurry slurry stability is improved, select in the embodiment of the present invention partial size for 0.1 μm~0.3 μm of SILICA FUME；
Cement additive then is used to guarantee the performances such as rheological characteristic, suspension, the pumpability of cement slurry.
Based on the above, oil-well cement contained in Antileakage Cement Slurry provided in an embodiment of the present invention, bridge particle,
Quartz sand, silicon powder are granular materials, temporarily block up principle using shielding, pass through the reasonable grade between the granular materials of different-grain diameter
Match, form bridge blinding, to effectively block the pore formation easily missed, and with acting on caused inductivity crack by pressure difference
Layer, while bearing capacity is high, can effectively prevent the leakage in well cementing process.
Also, theory of close packing is utilized, by the rational gradation composition between the granular materials of different-grain diameter, the present invention is implemented
It is capable of forming tightly packed body after the Antileakage Cement Slurry thickening that example provides, Behavior of Hardened Cement Paste compression strength height, interface agglutination after thickening
Intensity is high, can be realized effective packing of oil-water-layer.
In addition, Antileakage Cement Slurry provided in an embodiment of the present invention be easy to puddle uniformly, stability it is good, thickening time, rheology
Performance is controllable, it can be ensured that construction safety.
In Antileakage Cement Slurry provided in an embodiment of the present invention, the parts by weight of water be specifically as follows 36 parts, 40 parts, 45 parts,
50 parts, 55 parts, 60 parts, 65 parts, 70 parts etc.；The parts by weight of oil-well cement are specifically as follows 60 parts, 65 parts, 70 parts, 75 parts, 80
Part, 85 parts, 90 parts etc.；The parts by weight of bridge particle can be 1 part, 1.2 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.8 parts, 2.0
Part etc.；The parts by weight of quartz sand can for 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts,
10 parts etc.；The parts by weight of SILICA FUME can be 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts etc..
In the embodiment of the present invention, there is no considered critical for the specific ingredient of bridge particle, as long as partial size is met the requirements i.e.
It can, for example, bridge particle can be calcium carbonate granule, resinae compound particle etc..
Further, Antileakage Cement Slurry provided in an embodiment of the present invention can also include: hollow glass micropearl.Hollow glass
Microballon is a kind of hollow powdered ultralight inorganic non-metallic material of ball, and apparent density (apparent density) is usually in 0.7g/cm3
Hereinafter, playing the role of reducing cement slurry density, selection partial size is at 30 μm~60 μm in the embodiment of the present invention as palliative
Hollow glass micro-ball.
In the embodiment of the present invention, the parts by weight of hollow glass micropearl can need to select according to the actual density of cement slurry
It selects, it can be for 10 parts hereinafter, such as 0.5 part, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts.
In the embodiment of the present invention, the concrete composition of cement additive can be selected according to actual needs, including but not
It is limited to fluid loss agent, dispersing agent, adjustable solidification agent, suspending agent and defoaming agent etc..
Wherein, fluid loss agent is for controlling cement slurry water loss；For dispersing agent for keeping each component fully dispersed, cement slurry is equal
It is even；Suspending agent makes cement slurry have preferable suspension stability for the biggish particle of partial size that suspends；Adjustable solidification agent is for adjusting water
The livering time；Defoaming agent is used to eliminate the bubble generated when preparing cement slurry.
Adjustable solidification agent includes coagulant, accelerator, retarder etc. again.
In Antileakage Cement Slurry provided in an embodiment of the present invention, the parts by weight of fluid loss agent can be 2 parts~3 parts, example
Such as 2.2 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.8 parts, 3.0 parts.
The parts by weight of dispersing agent can be 0.2 part~0.6 part, such as 0.2 part, 0.25 part, 0.3 part, 0.35 part, 0.4
Part, 0.45 part, 0.5 part, 0.55 part, 0.6 part etc..
The parts by weight of adjustable solidification agent can be 3 parts~5 parts, such as 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts etc..
The parts by weight of suspending agent can be 0.3 part~0.5 part, such as 0.3 part, 0.35 part, 0.4 part, 0.45 part, 0.5
Part etc..
The parts by weight of defoaming agent can be 2 parts~5 parts, such as 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts
Deng.
It is additional for cement such as fluid loss agent, dispersing agent, adjustable solidification agent, suspending agent and defoaming agents in the embodiment of the present invention
The specific type of agent does not have particular/special requirement, type, the model of cement additive commonly used in the art.
In Antileakage Cement Slurry provided in an embodiment of the present invention, the content of each component can arbitrarily take in the range of above-mentioned restriction
Value, can be by the dosage of regulating pondage, ash quantity and hollow glass micropearl come the density of control system.Preferably, can make most
The water-solid ratio of the Antileakage Cement Slurry obtained eventually is 0.51~0.60, density 1.55g/cm3~1.90g/cm3, the thickening time
60min~240min, compression strength is greater than 21MPa for 24 hours, and sedimentation stability is not more than 0.020g/cm3, API dehydration is less than
100mL。
Antileakage Cement Slurry provided in an embodiment of the present invention can be according to method system as defined in the 5th chapter in GB/T 19139
It is standby.
In summary, Antileakage Cement Slurry includes following weight in a kind of optional embodiment of the embodiment of the present invention
The component of number:
Water, 360 parts；
Oil-well cement, 600 parts；
The bridge particle that partial size is 500 μm~660 μm, 10 parts；
Quartz sand, 50 parts；
SILICA FUME, 20 parts；
Fluid loss agent, 20 parts；
Dispersing agent, 2 parts；
Coagulant, 30 parts；
Suspending agent, 3 parts；
Defoaming agent, 20 parts.
Shout the stratum that diameter or average crack width are 1 millimeter in the Antileakage Cement Slurry hole that can be used for being averaged.
In another optional embodiment of the embodiment of the present invention, Antileakage Cement Slurry includes the component of following parts by weight:
Water, 530g parts；
Oil-well cement, 750 parts；
The bridge particle that partial size is 1000 μm~1300 μm, 15 parts；
Quartz sand, 75 parts,
Hollow glass micropearl, 50 parts；
SILICA FUME, 35g parts；
Fluid loss agent, 25 parts；
Dispersing agent, 3.7 parts；
Coagulant, 40 parts；
Suspending agent, 4 parts；
Defoaming agent, 35 parts.
Shout the stratum that diameter or average crack width are 2 millimeters in the Antileakage Cement Slurry hole that can be used for being averaged.
In another optional embodiment of the embodiment of the present invention, Antileakage Cement Slurry includes the component of following parts by weight:
Water, 700 parts；
Oil-well cement, 900 parts；
The bridge particle that partial size is 1500 μm~2000 μm, 20 parts；
Quartz sand, 100 parts；
Hollow glass micropearl, 100 parts；
SILICA FUME, 50 parts；
Fluid loss agent, 30 parts；
Dispersing agent, 6 parts；
Coagulant, 50 parts；
Suspending agent, 5 parts；
Defoaming agent, 50 parts.
Shout the stratum that diameter or average crack width are 3 millimeters in the Antileakage Cement Slurry hole that can be used for being averaged.
Antileakage Cement Slurry provided in an embodiment of the present invention is described further below by specific experiment data.
The producer of material used in following example 1~embodiment 3 and model are as follows:
Oil-well cement, victory tie up G grades, and the partial size of 90% particle 20 μm of median particle size, is purchased from less than 53 μm in the oil-well cement
Linchu, shantung Sheng Wei special cement Co., Ltd.
Bridge particle, resinae compound particle, 1.3~1.55g/cm of density3, it is purchased from the limited public affairs of Ge Ruidisi petroleum technology
Department.
Quartz sand, partial size are 425 μm~180 μm (40 mesh~80 mesh), process limited public affairs purchased from Tianjin Yuyang super finely ground slag
Department,
Hollow glass micropearl, apparent density 0.7g/cm3, partial size is 60 μm~30 μm, and median particle size is 40 μm, purchased from beauty
3M company, state (Minnesota ,USA mineral and manufacturing company).
SILICA FUME, particle of the partial size less than 1 μm accounts for 80% or more in the SILICA FUME, average grain diameter at 0.1 μm~0.3 μm,
Purchased from Wuhan Niu Ruiqi new material Co., Ltd.
Fluid loss agent, model G33S are purchased from Weihui City Chemical Co., Ltd..
Dispersing agent, model USZ are purchased from Weihui City Chemical Co., Ltd..
Coagulant, model G202 are purchased from Weihui City Chemical Co., Ltd..
Suspending agent, model DRK-3S are purchased from drilling engineering research institute, China Petroleum group.
Defoaming agent, model G603 are purchased from Tianjin Cnpc Boxing Engineering Technology Co., Ltd..
Embodiment 1
The present embodiment provides a kind of well cementation Antileakage Cement Slurrys suitable for XX-01 well.
XX-01 well is fractured reservoir leakage, and loss horizon average crack slit width is 1.0mm, when annular pressure is
It is missed when 35.6Mpa, maximum annular pressure is 37.2Mpa when cementing is constructed.For effective pre- lost circulation prevention, select
The bridge particle that partial size is 500 μm~660 μm forms cement-slurry method 1, avoids the leakage during cementing operation.
Formula 1: water 360g, oil-well cement 600g, the bridge particle 10g that 500 μm~660 μm of partial size, quartz sand 50g are micro-
Silicon powder 20g, fluid loss agent 20g, dispersing agent 2g, coagulant 30g, suspending agent 3g, defoaming agent 20g.
Antileakage Cement Slurry provided in this embodiment is prepared in strict accordance with method as defined in the 5th chapter in GB/T 19139.
Carry out evaluation according to performance of the method as defined in GB/T 19139 to Antileakage Cement Slurry provided in this embodiment, as a result
Density for cement slurry is 1.89g/cm3, thickening time 168min, API dehydration is 48mL, fluidity 21cm, for 24 hours resistance to compression
Intensity is 32MPa, the difference of densities 0.015g/cm of the Behavior of Hardened Cement Paste formed after thickening3。
Using cement slurry blocking anglogue test device disclosed in Chinese patent ZL 200520119105.5 to the present embodiment
The sealing characteristics of the Antileakage Cement Slurry of offer is tested, and Antileakage Cement Slurry provided in this embodiment can block up 1mm seam as the result is shown
Gap, bearing capacity 3.5MPa.
Embodiment 2
The present embodiment provides a kind of well cementation Antileakage Cement Slurrys suitable for XX-02 well.
XX-02 well is fractured reservoir leakage, and loss horizon average crack slit width is 2.0mm, when annular pressure is
It is missed when 31.5Mpa, maximum annular pressure is 32.8Mpa when cementing is constructed, and for effective pre- lost circulation prevention, is selected
Partial size is 1000 μm~1300 μm of bridge particle, while hollow glass micropearl reduction cement slurry density is added, and forms cement slurry
Formula 2, avoids the leakage during cementing operation.
Formula 2: water 530g, oil-well cement 750g, partial size be 1000 μm~1300 μm bridge particle 15g, quartz sand 75g,
Hollow glass micropearl 50g, SILICA FUME 35g, fluid loss agent 25g, dispersing agent 3.7g, coagulant 40g, suspending agent 4g, defoaming agent
35g。
Antileakage Cement Slurry provided in this embodiment is prepared in strict accordance with method as defined in the 5th chapter in GB/T 19139.
Carry out evaluation according to performance of the method as defined in GB/T 19139 to Antileakage Cement Slurry provided in this embodiment, as a result
Density for cement slurry is 1.65g/cm3, thickening time 186min, API dehydration is 54mL, fluidity 23cm, for 24 hours resistance to compression
Intensity 28MPa, the difference of densities 0.017g/cm of Behavior of Hardened Cement Paste3。
Using cement slurry blocking anglogue test device disclosed in Chinese patent ZL 200520119105.5 to the present embodiment
The sealing characteristics of the Antileakage Cement Slurry of offer is tested, and Antileakage Cement Slurry provided in this embodiment can block up 2mm seam as the result is shown
Gap, bearing capacity 2.8MPa.
Embodiment 3
The present embodiment provides a kind of well cementation Antileakage Cement Slurrys suitable for XX-03 well.
XX-03 well is pore formation leakage, and loss horizon is averaged pore throat diameter for 3.0mm, when annular pressure is
It is missed when 26.5Mpa, maximum annular pressure is 28.8Mpa when cementing is constructed, and for effective pre- lost circulation prevention, is selected
1500 μm~2000 μm bridge particles, while hollow glass micropearl reduction cement slurry density is added, cement-slurry method 3 is formed, is kept away
The leakage during cementing operation is exempted from.
Formula 3: water 700g, oil-well cement 900g, the bridge particle 20g that partial size is 1500 μm~2000 μm, quartz sand
100g, hollow glass micropearl 100g, SILICA FUME 50g, fluid loss agent 30g, dispersing agent 6g, coagulant 50g, suspending agent 5g, defoaming
Agent 50g.
Antileakage Cement Slurry provided in this embodiment is prepared in strict accordance with method as defined in the 5th chapter in GB/T 19139.
Carry out evaluation according to performance of the method as defined in GB/T 19139 to Antileakage Cement Slurry provided in this embodiment, as a result
Density for cement slurry is 1.55g/cm3, thickening time 206min, API dehydration is 63mL, fluidity 24cm, for 24 hours resistance to compression
Intensity is 24Mpa, the difference of densities 0.020g/cm of Behavior of Hardened Cement Paste3。
Using cement slurry blocking anglogue test device disclosed in Chinese patent ZL 200520119105.5 to the present embodiment
The sealing characteristics of the Antileakage Cement Slurry of offer is tested, and Antileakage Cement Slurry provided in this embodiment can block up the hole 3mm as the result is shown
Gap, bearing capacity 2.5MPa.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (8)
1. a kind of well cementation Antileakage Cement Slurry, which is characterized in that the Antileakage Cement Slurry includes the component of following parts by weight:
Water, 36 parts~70 parts；
Oil-well cement, 60 parts~90 parts；
Bridge particle, 1 part~2 parts；
Quartz sand, 5 parts~10 parts；
SILICA FUME, 2 parts~5 parts；
Cement additive, 7 parts~15 parts；
The median particle size of the oil-well cement is 10 μm~30 μm；
The partial size of the bridge particle is that the formation at target locations hole that is averaged shouts the 1/2~2/3 of diameter or average crack width；
The partial size of the quartz sand is 180 μm~425 μm；
The partial size of the silicon powder is 0.1 μm~0.3 μm.
2. Antileakage Cement Slurry according to claim 1, which is characterized in that the Antileakage Cement Slurry further include: hollow glass
Microballon；The partial size of the hollow glass micropearl is 30 μm~60 μm.
3. Antileakage Cement Slurry according to claim 2, which is characterized in that the parts by weight of the hollow glass micropearl are 10
Part or less.
4. Antileakage Cement Slurry according to claim 3, which is characterized in that the cement additive includes: fluid loss agent, divides
Powder, adjustable solidification agent, suspending agent and defoaming agent.
5. Antileakage Cement Slurry according to claim 4, which is characterized in that in the Antileakage Cement Slurry, the fluid loss agent
Parts by weight be 2 parts~3 parts, the parts by weight of the dispersing agent are 0.2 part~0.6 part, the parts by weight of the adjustable solidification agent
It is 3 parts~5 parts, the parts by weight of the suspending agent are 0.3 part~0.5 part, and the parts by weight of the defoaming agent are 2 parts~5 parts.
6. Antileakage Cement Slurry according to claim 5, which is characterized in that the Antileakage Cement Slurry includes following parts by weight
Component:
Water, 360 parts；
Oil-well cement, 600 parts；
The bridge particle that partial size is 500 μm~660 μm, 10 parts；
Quartz sand, 50 parts；
SILICA FUME, 20 parts；
Fluid loss agent, 20 parts；
Dispersing agent, 2 parts；
Coagulant, 30 parts；
Suspending agent, 3 parts；
Defoaming agent, 20 parts.
7. Antileakage Cement Slurry according to claim 5, which is characterized in that the Antileakage Cement Slurry includes following parts by weight
Component:
Water, 530g parts；
Oil-well cement, 750 parts；
The bridge particle that partial size is 1000 μm~1300 μm, 15 parts；
Quartz sand, 75 parts,
Hollow glass micropearl, 50 parts；
SILICA FUME, 35g parts；
Fluid loss agent, 25 parts；
Dispersing agent, 3.7 parts；
Coagulant, 40 parts；
Suspending agent, 4 parts；
Defoaming agent, 35 parts.
8. Antileakage Cement Slurry according to claim 5, which is characterized in that the Antileakage Cement Slurry includes following parts by weight
Component:
Water, 700 parts；
Oil-well cement, 900 parts；
The bridge particle that partial size is 1500 μm~2000 μm, 20 parts；
Quartz sand, 100 parts；
Hollow glass micropearl, 100 parts；
SILICA FUME, 50 parts；
Fluid loss agent, 30 parts；
Dispersing agent, 6 parts；
Coagulant, 50 parts；
Suspending agent, 5 parts；
Defoaming agent, 50 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810012282.5A CN110002798A (en) | 2018-01-05 | 2018-01-05 | Antileakage Cement Slurry is used in a kind of well cementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810012282.5A CN110002798A (en) | 2018-01-05 | 2018-01-05 | Antileakage Cement Slurry is used in a kind of well cementation |
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| CN110002798A true CN110002798A (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810012282.5A Pending CN110002798A (en) | 2018-01-05 | 2018-01-05 | Antileakage Cement Slurry is used in a kind of well cementation |
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| Country | Link |
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| CN (1) | CN110002798A (en) |
Cited By (2)
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| CN111560240A (en) * | 2020-07-16 | 2020-08-21 | 海塔石油科技有限公司 | Ultramicro-grade channeling and plugging agent as well as preparation method and application thereof |
| CN111663900A (en) * | 2020-07-29 | 2020-09-15 | 西南石油大学 | Drilling process for improving well wall stability of compact low-permeability oil and gas reservoir horizontal well |
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| CN111560240A (en) * | 2020-07-16 | 2020-08-21 | 海塔石油科技有限公司 | Ultramicro-grade channeling and plugging agent as well as preparation method and application thereof |
| CN111560240B (en) * | 2020-07-16 | 2020-10-13 | 海塔石油科技有限公司 | Ultramicro-grade channeling and plugging agent as well as preparation method and application thereof |
| CN111663900A (en) * | 2020-07-29 | 2020-09-15 | 西南石油大学 | Drilling process for improving well wall stability of compact low-permeability oil and gas reservoir horizontal well |
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Application publication date: 20190712 |