CN104087273B - A kind of high salinity Solid Free micro-foam drilling fluid or completion fluid - Google Patents
A kind of high salinity Solid Free micro-foam drilling fluid or completion fluid Download PDFInfo
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- CN104087273B CN104087273B CN201410240158.6A CN201410240158A CN104087273B CN 104087273 B CN104087273 B CN 104087273B CN 201410240158 A CN201410240158 A CN 201410240158A CN 104087273 B CN104087273 B CN 104087273B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/38—Gaseous or foamed well-drilling compositions
Abstract
The invention discloses a kind of high salinity Solid Free micro-foam drilling fluid or completion fluid, the raw material which has following parts by weight is made：(1) tackifier, 0.3 ~ 0.6 part；(2) foam stabilizer, 0.3 ~ 0.5 part；(3) foaming agent, 0.7 ~ 1.1 part；(4) fluid loss additive, 2 ~ 3 parts；(5) flow pattern regulator, 0.3 ~ 0.5 part；(6) soda ash, 0.2 ~ 0.3 part；(7) base fluid, 100 parts.Its preparation method is：Said components (1)-(6) by its content, in sequentially adding component in a usual manner under conditions of normal temperature and pressure, mechanical agitation (7), stirred 26 hours after all adding in.High salinity Solid Free micro-foam drilling fluid or completion fluid system according to the present invention have excellent rheological property, preferable filtrate loss controllability and preferable stability, can be applied to high saliferous（Saline bed）, low pressure, the drilling well on leakiness stratum or completion construction in.
Description
Technical field
The present invention relates to a kind of Drilling and completion fluids, more particularly to a kind of high salinity Solid Free micro-foam drilling fluid or
Completion fluid.
Background technology
At present, many old fileds in China come into development late stage, and there are failure reservoirs.Failure reservoir is with hygroscopicity
Based on sandstone, big crack is frequently present of, belongs to Thief zone or Fractured leakiness stratum, is often occurred in drilling process serious
Leakage and differential sticking, are difficult smoothly to drill exhausted stratum, and be easy to damage reservoir using conventional drilling liquid.It is micro-
Foam drilling fluid is mainly used for solving the drilling and protection problem of low porosity and low permeability, the relatively low reservoir of reservoir pressure coefficient, field application
Extensively.With the continuous extension of micro-foam drilling fluid application field, the performance to micro-foam drilling fluid is it is also proposed that higher and higher
It is required that：When boring chance brine or saline bed, it is desirable that micro-foam drilling fluid has stronger salt tolerance, to reduce or avoid salt
In the presence of the influence to property of drilling fluid.
《Drilling and completion fluids》Magazine in May, 2007 the 3rd periodical of volume 24 stepped on one it is entitled《High-performance underbalance is steeped
The research of foam drilling fluid system》Data, compound to obtain high-performance foam drilling fluid using AGS-8, AGS-10 and Tea Saponin
Foaming agent constructs the micro-foam drilling fluid system of stronger salt tolerance.Its formula is：0.5% AGSS (AGS-8:AGS-10:Tea
Saponin=4:6:5)+0.3% FA367- Ι Ι of+2.0% clay.
《Changjiang University's journal (from section's version) science and engineering volume》Magazine in June, 2007 the 2nd periodical of volume 4 stepped on one it is entitled
《The research application of saturated brine Foam》Data, by the use of saturated brine as base fluid construct a kind of rheological characteristic and
The preferable Foam of reservoir protection, formula are：6% swelling+0.05%Na2CO3+0.6%HTV-II+0.8%LV-
CMC+1%SPNH+2%SMP+1.5%XCS-II+36%
NaCl+0.2%XC-ZQP+0.2%XC-FQP.Site test results show, the stabilizing mud properties, Neng Gouman
Sufficient safety drilling requirement.
《Drilling and completion fluids》Magazine in March, 2008 the 2nd periodical of volume 25 stepped on one it is entitled《High salinity microfoam
The research and application of drilling liquid technology》Data, saturated salt-water drilling fluid system is transformed into the microfoam drilling well of high salinity
Liquid, formula are：4% sodium bentonite+1%CMS+1%HPNH+2%SMP-2+1%HV-CMC+0.1%NaOH+30%NaCl+0.2%PAC
+(0.1%~0.2%)QP-1+0.2%H-XC+(0.1%~0.2%)QP-2.The formula shows in application process good at the scene
Stability and stronger leakproof, leak stopping capability have the exploitation of saline bed lower part low pressure reservoir and promote and apply valency well
Value.
The deficiency of above-mentioned technology is：1st, need prehydration with slurry containing larger amount of bentonite in system, complex process,
It is waiting for a long time；2nd, hydration swelling easily occurs for the sub-micron solid phase particles such as clay contained in system, blocks vapour gas-bearing formation duct, meeting
Reservoir is damaged, it is difficult to protect and find oil-gas Layer to the maximum extent.
Chinese patent CN101643641B and Chinese patent CN101649192A disclose respectively a kind of low solid content and
The micro-foam drilling fluid formula of Solid Free content eliminates the process of bentonite prehydration, and containing few in drilling fluid system
Clay particle is measured or is not contained, protection oil-gas Layer effect is good.But it is bored in the two patents without reference to high salinity microfoam
The structure of well liquid limits its use in high salty formations such as saline beds.
《Drilling and completion fluids》Magazine in May, 2012 the 3rd periodical of volume 29 stepped on one it is entitled《Solid Free microfoam is bored
The research and application of well liquid》Data, describe a kind of Solid Free micro-foam drilling fluid drilling fluid system.The drilling fluid system is not
Containing bentonite, and with preferable inhibition, put down 1 well in Shao 4- and carried out field application, work well.But in text not
The anti-salt property of the drilling fluid system is introduced, limits its use in high salty formations such as saline beds.
Invention content
The purpose of the present invention provides a kind of high salinity Solid Free microvesicle aiming at drawbacks described above of the existing technology
Foam drilling fluid or completion fluid.
Its technical solution is made of the component of following parts by weight：
(1) 0.3 ~ 0.6 part of tackifier SL-KDT
(2) 0.3 ~ 0.5 part of foam stabilizer SL-KWJ
(3) 0.7 ~ 1.1 part of foaming agent SL-KDF
(4) 2 ~ 3 parts of fluid loss additive SL-KJL
(5) 0.3 ~ 0.5 part of flow pattern regulator SL-KDPR
(6) 0.2 ~ 0.3 part of soda ash
(7) 100 parts of base fluid
Wherein, tackifier SL-KDT is xanthans XC：Viscous sodium carboxymethylcellulose HV-CMC=2 ~ 4 of height：1 ~ 3 ratio group
It closes, foam stabilizer SL-KWJ is polyanion cellulose PAC：Polyacrylamide PAM=3 ~ 6：1 ~ 2 ratio combination；Foaming agent SL-
KDF is modified Tea Saponin ZY-WP for salt resistance：α-sodium olefin sulfonate AOS：Dodecyldimethylamine oxide OB-2=5 ~ 9：2~3:1~2
Ratio combination；Fluid loss additive SL-KJL is modified starch DFD-140：Walchowite SPNH：Sulfonated-pheno-formoldehyde resin SMP-II=
3~5：4~6：1 ~ 3 ratio combination, flow pattern regulator SL-KDPR is organosilicon potassium humate, and soda ash is sodium carbonate, and base fluid is chlorine
Change the saturated solution of sodium,
By the component of the drilling fluid or completion fluid (1)-(6) by above-mentioned content, under conditions of normal temperature and pressure, mechanical agitation
In sequentially adding component in a usual manner (7), stirred 2-6 hours after all adding in.
Above-mentioned tackifier SL-KDT is xanthans XC：Viscous sodium carboxymethylcellulose HV-CMC=1 of height：1 ratio composition
Above-mentioned foam stabilizer SL-KWJ is polyanion cellulose PAC：Polyacrylamide PAM=6：1 ratio combination.
Above-mentioned foaming agent SL-KDF is modified Tea Saponin ZY-WP for salt resistance：α-sodium olefin sulfonate AOS：Dimethyl
Base amine oxide OB-2=9：2：2 ratio combination.
Above-mentioned fluid loss additive SL-KJL is modified starch DFD-140：Walchowite SPNH：Sulfonated-pheno-formoldehyde resin SMP-
II=3：5：3 ratio combination.
Wherein, the xanthans（XC）, high viscous sodium carboxymethylcellulose（HV-CMC）And polyanion cellulose（PAC）
It is the product of Zibo Hailan Chemical Co., Ltd.；Polyacrylamide（PAM）, walchowite（SPNH）And sulfonated-pheno-formoldehyde resin
（SMP-II）It is the product of Shengli Oil Field blogger's Mud Technology Co., Ltd；Salt resistance is modified Tea Saponin（ZY-WP）It is Hangzhou
The product of Zhong Ye natural plants Science and Technology Ltd.；α-sodium olefin sulfonate（AOS）It is the product of Zibo Hai Lai Trade Co., Ltd.s；
Dodecyldimethylamine oxide（OB-2）It is the product of Shandong long-chain Chemical Co., Ltd.；Modified starch（DFD-140）It is new
The product of Jiang Zhundong petroleum technologies limited company；Organosilicon potassium humate is the production of Shandong Yanggu north of the Changjiang River Chemical Co., Ltd.
Product；Sodium carbonate and sodium chloride are the products of Shanghai Sinopharm Chemical Reagent Co., Ltd..
Compared with prior art, the present invention it has the following effects that：
（1）, the present invention micro-foam drilling fluid or completion fluid saline-alkaline tolerance it is strong, using the saturated solution of sodium chloride as base fluid
Still there is good stability, be suitable for the probing of saline bed；
（2）, the present invention micro-foam drilling fluid or completion fluid do not contain bentonite, it is small to reservoir damage, to oil-gas Layer protect
It is good to protect effect；
（3）, the present invention micro-foam drilling fluid or completion fluid rheological property it is excellent, have stronger large rock-carrying ability；
（4）, the present invention micro-foam drilling fluid or completion fluid filter loss it is low, have to hole microcrack leakproof, leak stopping effect,
It is suitable for the probing on Thief zone or Fractured leakiness stratum；
（5）, the present invention micro-foam drilling fluid or completion fluid do not contain bentonite, it is with slurry not need to prehydration, preparation side
Just it is quick, simplify site construction technology；
（6）, the present invention micro-foam drilling fluid or density of completion fluids adjustable extent it is wide.
Specific embodiment
With reference to specific embodiment, the invention will be further described：
The high salinity Solid Free micro-foam drilling fluid or completion fluid that the present invention mentions, preparation method：
It is prepared as follows for the high salinity Solid Free micro-foam drilling fluid or completion fluid of following nonlimiting examples, into
Point and ratio, according to weight of additive part：
(1) 0.3 ~ 0.6 part of tackifier SL-KDT
(2) 0.3 ~ 0.5 part of foam stabilizer SL-KWJ
(3) 0.7 ~ 1.1 part of foaming agent SL-KDF
(4) 2 ~ 3 parts of fluid loss additive SL-KJL
(5) 0.3 ~ 0.5 part of flow pattern regulator SL-KDPR
(6) 0.2 ~ 0.3 part of soda ash
(7) 100 parts of base fluid
Wherein, tackifier SL-KDT is xanthans XC：Viscous sodium carboxymethylcellulose HV-CMC=2 ~ 4 of height：1 ~ 3 ratio group
It closes, foam stabilizer SL-KWJ is polyanion cellulose PAC：Polyacrylamide PAM=3 ~ 6：1 ~ 2 ratio combination；Foaming agent SL-
KDF is modified Tea Saponin ZY-WP for salt resistance：α-sodium olefin sulfonate AOS：Dodecyldimethylamine oxide OB-2=5 ~ 9：2~3:1~2
Ratio combination；Fluid loss additive SL-KJL is modified starch DFD-140：Walchowite SPNH：Sulfonated-pheno-formoldehyde resin SMP-II=
3~5：4~6：1 ~ 3 ratio combination, flow pattern regulator SL-KDPR is organosilicon potassium humate, and soda ash is sodium carbonate, and base fluid is chlorine
Change the saturated solution of sodium,
Preparation method：Said components (1)-(6) by its content, at normal temperatures and pressures, under conditions of mechanical agitation（600~
1000 turns/min）In sequentially adding component in a usual manner (7), 2-6 hours, preferably 4 hours are stirred after all adding in.
The high salinity Solid Free micro-foam drilling fluid or the detection method of completion fluid performance that the present invention mentions：
The detection of high salinity Solid Free micro-foam drilling fluid or completion fluid is using Fann35A types viscosimeter in 25 DEG C of conditions
Lower progress measures 600r/min, 300 r/min, 200 r/min, 100 r/min, 6 r/min, the reading point of 3 r/min successively
It is not denoted as：The reading of Φ 600, Φ 300, Φ 200, Φ 100, Φ 6, Φ 3 is cut according to following equation computational plasticity viscosity with dynamic
Power：
Apparent viscosity（AV）= 1/2(Φ600)；
Plastic viscosity（PV）=Φ600–Φ300；
Yield value（YP）=1/2(Φ300–PV).
The high salinity Solid Free micro-foam drilling fluid or the detection method of completion fluid filtration property that the present invention mentions：
The aperture of pressure filter connector is blocked with finger, micro-foam drilling fluid is poured into pressure filter, makes liquid level higher than in cup
Graduation mark and away from distance from top be l centimetres, put O-ring seal well, pave filter paper, tighten cup lid, then by pressure filter and threeway
Fittings, and measuring graduates is placed below press filtration instrument outflux.Rapid pressurization and timing, pressing force are 0.7 MPa.Pressure
Power source is nitrogen.When filtering out the time by 30 minutes, the residual drop on filtration device outflux is collected into graduated cylinder, amount removed
Cylinder reads and records the volume (unit mL) of acquired filtrate.
The high salinity Solid Free micro-foam drilling fluid or the detection method of completion fluid stability that the present invention mentions：
100 parts of base fluids are taken, required inorganic agent is added in and prepares high salinity Solid Free microfoam brill according to the present invention
Well liquid or completion fluid, are poured into graduated cylinder rapidly later, start timing, and observe and 50 parts of liquid required times are precipitated,
As half-life period t1/2。
Embodiment 1
(1) tackifier SL-KDT, 0.4 part, by xanthans（XC）：The viscous sodium carboxymethylcellulose of height（HV-CMC）=1：1 ratio
Example composition；(2) foam stabilizer SL-KWJ, 0.4 part, by polyanion cellulose（PAC）：Polyacrylamide（PAM）=4：1.5 ratio
Example combination；(3) 0.7 part, Tea Saponin is modified by salt resistance by foaming agent SL-KDF（ZY-WP）：α-sodium olefin sulfonate（AOS）：Dodecane
Base dimethyl amine（OB-2）=6：2：1 ratio combination；(4) fluid loss additive SL-KJL, 2.5 parts, by modified starch（DFD-
140）：Walchowite（SPNH）：Sulfonated-pheno-formoldehyde resin（SMP-II）=4：4：1 ratio combination；(5) flow pattern regulator SL-
KDPR, 0.3 part, be organosilicon potassium humate；(6) soda ash, 0.2 part, be sodium carbonate；(7) base fluid, 100 parts, be the full of sodium chloride
And solution.
Preparation method：Said components (1)-(6) by its content, at normal temperatures and pressures, under conditions of mechanical agitation（600~
1000 turns/min）In sequentially adding component in a usual manner (7), stirred 4 hours after all adding in, test its rheological property, leak-off
Performance and half-life period.
Embodiment 2
(1) tackifier SL-KDT, 0.5 part, by xanthans（XC）：The viscous sodium carboxymethylcellulose of height（HV-CMC）=4：1 ratio
Example composition；(2) foam stabilizer SL-KWJ, 0.3 part, by polyanion cellulose（PAC）：Polyacrylamide（PAM）=6：1 ratio
Combination；(3) 0.8 part, Tea Saponin is modified by salt resistance by foaming agent SL-KDF（ZY-WP）：α-sodium olefin sulfonate（AOS）：Dodecyl
Dimethyl amine（OB-2）=7：3：2 ratio combination；(4) fluid loss additive SL-KJL, 2 parts, by modified starch（DFD-140）：
Walchowite（SPNH）：Sulfonated-pheno-formoldehyde resin（SMP-II）=5：6：1 ratio combination；(5) flow pattern regulator SL-KDPR,
0.4 part, be organosilicon potassium humate；(6) soda ash, 0.3 part, be sodium carbonate；(7) base fluid, 100 parts, be that the saturation of sodium chloride is molten
Liquid.
Preparation method：Said components (1)-(6) by its content, at normal temperatures and pressures, under conditions of mechanical agitation（600~
1000 turns/min）In sequentially adding component in a usual manner (7), stirred 4 hours after all adding in, test its rheological property, leak-off
Performance and half-life period.
Embodiment 3
(1) tackifier SL-KDT, 0.6 part, by xanthans（XC）：The viscous sodium carboxymethylcellulose of height（HV-CMC）=2：3 ratio
Example composition；(2) foam stabilizer SL-KWJ, 0.5 part, by polyanion cellulose（PAC）：Polyacrylamide（PAM）=3：2 ratio
Combination；(3) 0.9 part, Tea Saponin is modified by salt resistance by foaming agent SL-KDF（ZY-WP）：α-sodium olefin sulfonate（AOS）：Dodecyl
Dimethyl amine（OB-2）=9：2：2 ratio combination；(4) fluid loss additive SL-KJL, 3 parts, by modified starch（DFD-140）：
Walchowite（SPNH）：Sulfonated-pheno-formoldehyde resin（SMP-II）=3：5：3 ratio combination；(5) flow pattern regulator SL-KDPR,
0.5 part, be organosilicon potassium humate；(6) soda ash, 0.2 part, be sodium carbonate；(7) base fluid, 100 parts, be that the saturation of sodium chloride is molten
Liquid.
Preparation method：Said components (1)-(6) by its content, at normal temperatures and pressures, under conditions of mechanical agitation（600~
1000 turns/min）In sequentially adding component in a usual manner (7), stirred 4 hours after all adding in, test its rheological property, leak-off
Performance and half-life period.
Embodiment 4
(1) tackifier SL-KDT, 0.6 part, by xanthans（XC）：The viscous sodium carboxymethylcellulose of height（HV-CMC）=4：3 ratio
Example composition；(2) foam stabilizer SL-KWJ, 0.5 part, by polyanion cellulose（PAC）：Polyacrylamide（PAM）=6：1 ratio
Combination；(3) 1.1 parts, Tea Saponin is modified by salt resistance by foaming agent SL-KDF（ZY-WP）：α-sodium olefin sulfonate（AOS）：Dodecyl
Dimethyl amine（OB-2）=9：3：2 ratio combination；(4) fluid loss additive SL-KJL, 3 parts, by modified starch（DFD-140）：
Walchowite（SPNH）：Sulfonated-pheno-formoldehyde resin（SMP-II）=5：6：3 ratio combination；(5) flow pattern regulator SL-KDPR,
0.5 part, be organosilicon potassium humate；(6) soda ash, 0.3 part, be sodium carbonate；(7) base fluid, 100 parts, be that the saturation of sodium chloride is molten
Liquid.
Preparation method：Said components (1)-(6) by its content, at normal temperatures and pressures, under conditions of mechanical agitation（600~
1000 turns/min）In sequentially adding component in a usual manner (7), stirred 4 hours after all adding in, test its rheological property, leak-off
Performance and half-life period.
Embodiment 5
(1) tackifier SL-KDT, 0.3 part, by xanthans（XC）：The viscous sodium carboxymethylcellulose of height（HV-CMC）=2：1 ratio
Example composition；(2) foam stabilizer SL-KWJ, 0.3 part, by polyanion cellulose（PAC）：Polyacrylamide（PAM）=3：1 ratio
Combination；(3) 0.7 part, Tea Saponin is modified by salt resistance by foaming agent SL-KDF（ZY-WP）：α-sodium olefin sulfonate（AOS）：Dodecyl
Dimethyl amine（OB-2）=5：2：1 ratio combination；(4) fluid loss additive SL-KJL, 2 parts, by modified starch（DFD-140）：
Walchowite（SPNH）：Sulfonated-pheno-formoldehyde resin（SMP-II）=3：4：1 ratio combination；(5) flow pattern regulator SL-KDPR,
0.3 part, be organosilicon potassium humate；(6) soda ash, 0.2 part, be sodium carbonate；(7) base fluid, 100 parts, be that the saturation of sodium chloride is molten
Liquid.
Preparation method：Said components (1)-(6) by its content, at normal temperatures and pressures, under conditions of mechanical agitation（600~
1000 turns/min）In sequentially adding component in a usual manner (7), stirred 4 hours after all adding in, test its rheological property, leak-off
Performance and half-life period.
The performance characterization of high salinity Solid Free micro-foam drilling fluid or completion fluid involved by embodiment 1 ~ 5, such as 1 institute of table
Show.
The performance characterization of 1 high salinity Solid Free micro-foam drilling fluid of table or completion fluid
By the data of table 1 it is found that the density range of high salinity micro-foam drilling fluid according to the present invention or completion fluid
Greatly, in 0.70 ~ 1.05 g/cm3Between it is adjustable, illustrate develop foaming agent in saturated brine have good foam performance,
The density of saturated salt-water drilling fluid system can effectively be reduced；Rheological property is excellent, and viscosity and shear force are maintained at preferable level
On, have and preferably take salt ability, disclosure satisfy that the needs of drilling well；Filter loss is less than 7.5 mL, illustrates of the present invention micro-
Foam drilling fluid has excellent leak-proof leak-stopping ability, has leakproof, leakage leak stopping effect to hole microcrack, is suitable for hypertonic
Saturating or Fractured leakiness stratum probing；Half-life period all illustrates micro-foam drilling fluid stability of the present invention in more than 8h
Very well, the needs of field application be disclosure satisfy that.
Claims (1)
1. a kind of high temperature resistance Solid Free micro-foam drilling fluid or completion fluid, it is characterized in that：It is made of the ingredient of following parts by weight：⑴
Tackifier SL-KDT, 0.4 part, by xanthans XC：Viscous sodium carboxymethylcellulose HV-CMC=1 of height：1 ratio composition；(2) foam stabilizing
Agent SL-KWJ, 0.4 part, by polyanion cellulose PAC：Polyacrylamide PAM=4：1.5 ratio combination；(3) foaming agent SL-
0.7 part, Tea Saponin ZY-WP is modified by salt resistance by KDF：α-sodium olefin sulfonate AOS：Dodecyldimethylamine oxide OB-2=6：2：
1 ratio combination；(4) fluid loss additive SL-KJL, 2.5 parts, by modified starch DFD-140：Walchowite SPNH：Sulphur methyl phenolic aldehyde
Resin SMP-II=4：4：1 ratio combination；(5) flow pattern regulator SL-KDPR, 0.3 part, be organosilicon potassium humate；(6) it is pure
Alkali, 0.2 part, be sodium carbonate；(7) base fluid, 100 parts, the saturated solution for sodium chloride.
Preparation method：Said components (1)-(6) by its content, at normal temperatures and pressures, 600 ~ 1000 turns under conditions of mechanical agitation/
Min, in sequentially adding component in a usual manner (7), all add in after stir 4 hours, test its rheological property, filtration property with
And half-life period.
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| CN109236219B (en) * | 2018-11-16 | 2020-11-17 | 中联煤层气有限责任公司 | Density adjusting method and density adjusting equipment for foam drilling fluid |
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