CN105038740A - Solid-free water-base thermal insulation packer fluid suitable for deep water - Google Patents
Solid-free water-base thermal insulation packer fluid suitable for deep water Download PDFInfo
- Publication number
- CN105038740A CN105038740A CN201510439676.5A CN201510439676A CN105038740A CN 105038740 A CN105038740 A CN 105038740A CN 201510439676 A CN201510439676 A CN 201510439676A CN 105038740 A CN105038740 A CN 105038740A
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- water
- free water
- packer fluids
- solid free
- based insulation
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Classifications
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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
- C09K8/40—Spacer compositions, e.g. compositions used to separate well-drilling from cementing masses
-
- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
-
- 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
- C09K2208/22—Hydrates inhibition by using well treatment fluids containing inhibitors of hydrate formers
Abstract
The invention discloses solid-free water-base thermal insulation packer fluid suitable for deep water. The solid-free water-base thermal insulation packer fluid comprises, by weight, 0.5-1.5% of flowing deformation adjusting agent, 10-30% of polyhydric alcohol, 5-30% of soluble salt, 0.2-0.6% of bactericide and the balance water. The soluble salt is any one of or any compound of NaCl, KCl, NaBr, CaBr2, CaCl2, potassium formate and sodium formate. A solid-free water-base thermal insulation packer fluid system good in performance can be obtained through the soluble salt, and thus the problems of solid-phase sedimentation, environment pollution and the like of oil-base packer fluid are solved; due to the fact that the polyhydric alcohol is added in the system, the heat conduction coefficient of the system is decreased to be 62% that of water or even lower, and the thermal insulation effect similar to that of the oil-base thermal insulation packer fluid is achieved.
Description
Technical field
The present invention relates to the well finishing liquid that petroleum drilling engineering field is used, refer to a kind of Solid Free water-based insulation packer fluids being applicable to deep water particularly.
Background technology
Heat insulation packer fluids refer to the general name being filled in and meeting the heat insulation fluid of oil pipe between oil pipe and casing annulus with its several functions such as heat insulation.It mainly has the loss of minimizing oil pipe hot and balances annular space with pressure, and the effects such as protection Oil/gas Well integrity are the important component parts of Well Completion Engineering of Oil Reservoirs technology.Because oil pipe temperature is higher than near Sea Bottom seawater temperature a lot of in deep water hydrocarbon well, oil pipe heat is caused to scatter and disappear in a large number, temperature in oil pipe is caused to reduce, generate gas hydrate, separate out wax and bituminous matter, block oil pipe, cause the imperfection of Oil/gas Well, light then reduce output, heavy then cause Oil/gas Well accident.The heat insulation packer fluids being applied to Oil/gas Well at present are mainly divided into the heat insulation packer fluids of oil base and water-based insulation packer fluids two kinds with the difference of disperse phase.The heat insulation packer fluids of oil base because of its temperature tolerance good, stable performance, thermal conductivity is very little, substantially reduces the thermosteresis because thermal conduction causes, has good effect of heat insulation.But because oil can pollute ocean, therefore the heat insulation packer fluids of oil base are generally only used in land oil wells.And for the higher insulation oil gas well of pressure factor, require the oil base packer fluids of higher density, and oil base packer fluids increase the weight of, mainly through adding solid phase, often to cause solid precipitation, damage the problems such as pkr.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of Solid Free water-based insulation packer fluids being applicable to deep water, the water base packing packer fluids of this Solid Free pass through to add soluble salt regulation system density, in the empty solid precipitation problem solving oil-base mud with pressure of gimbal simultaneously.These type of water base packer fluids, by adding the alcohols material that can dissolve each other with water, reduce the thermal conductivity of system greatly; Add rheology control agent, make these packer fluids have low viscosity at high shear rates and meet pumping, at low shear rates there is high viscosity, effectively reduce the thermosteresis that annular space convection current causes, there is high-performance.
For achieving the above object, a kind of Solid Free water-based insulation packer fluids being applicable to deep water provided by the invention, its raw materials by weight meter comprise 0.5 ~ 1.5% rheology control agent, the polyvalent alcohol of 10 ~ 30%, the soluble salt of 5 ~ 30% and 0.2 ~ 0.6% sterilant; Surplus is water;
Described soluble salt is NaCl, KCl, NaBr, CaBr
2, CaCl
2, in potassium formiate and sodium formiate any one or composite;
Described rheology control agent is xanthan gum, guanidine glue, sesbania gum, hydroxypropyl guar gum, konjak gum, fenugreek gum, modified-cellulose, in polyacrylamide any one or composite.
Further, described polyvalent alcohol be in ethylene glycol, propylene glycol, glycerol, Diethylene Glycol, Macrogol 200 and poly(oxyethylene glycol) 400 any one or composite; Described aqueous phase is fresh water or seawater.
Again further, described sterilant is any one in dodecyl benzyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, myristyl benzyl dimethyl ammonium chloride, polyquaternium, Surchlor GR 60, Peracetic Acid, isothiazolinone, BIT and glutaraldehyde.
Again further, the raw materials by weight meter being applicable to the Solid Free water-based insulation packer fluids of deep water described in comprise the rheology control agent of 0.5 ~ 1.3%, 10 ~ 30% polyvalent alcohol, the soluble salt of 5 ~ 30%, sterilant, the surplus of 0.2 ~ 0.4% be water.
Again further, the raw materials by weight meter being applicable to the Solid Free water-based insulation packer fluids of deep water described in comprise 0.8 ~ 1.3% by xanthan gum, sky cyanines glue and modified-cellulose composite obtain rheology control agent, 10 ~ 30% by Diethylene Glycol and Macrogol 200 composite obtain polyvalent alcohol, 5 ~ 20% by NaCl and sodium formiate composite obtain soluble salt, 0.2 ~ 0.4% sterilant, surplus be water.
The density of described Solid Free water-based insulation packer fluids is 1.0 ~ 1.3g/cm
3.
Again further, the Solid Free water-based insulation packer fluids being applicable to deep water described in by 0.5% xanthan gum, 0.4% sky cyanines glue, 0.3% modified-cellulose, 20% Diethylene Glycol, 10% Macrogol 200,10% sodium-chlor, the sodium formiate of 10%, dodecyl benzyl dimethyl ammonium chloride, the surplus of 0.2% be water; Its density is 1.19g/cm
3.
The preparation method of Solid Free water-based insulation packer fluids, comprises the following steps:
1) each component raw material is taken by above-mentioned weight percent meter, for subsequent use;
2) polyvalent alcohol is joined in jar, when high-speed stirring, add the salt solution adding different concns after rheology control agent stirs as required successively, finally add sterilant, mix, obtain Solid Free water-based insulation packer fluids.
Beneficial effect of the present invention is:
1) the present invention adopts soluble salt just can obtain the Solid Free water-based insulation packer fluids system of excellent performance, solve oil base packer fluids solid precipitation, the problems such as contaminate environment, in system, adding of polyvalent alcohol makes the thermal conductivity of system be down to the 62% even lower of water, reaches the much the same effect of heat insulation of heat insulation packer fluids with oil base.
2) system of the present invention carrys out regulation system density by adding soluble salt.When not adding solid phase, just can prepare density is 1.0 ~ 1.3g/cm
3heat insulation packer fluids.In addition, the content adding free water in the system of reducing of soluble salt, can reduce the thermal conductivity of system.
3) this Solid Free of the present invention water base packing packer fluids Raw kind is few, and environment compatibleness is good, effectively can avoid the infringement that may cause environment.
Embodiment
In order to explain the present invention better, illustrate main contents of the present invention further below in conjunction with specific embodiment, but content of the present invention is not only confined to following examples.
Embodiment 1
Solid Free water-based insulation packer fluids 1 comprise the xanthan gum of 0.5%, 0.4% day cyanines glue, 0.3% modified-cellulose, 20% Diethylene Glycol, 10% Macrogol 200, the glutaraldehyde of 0.2%, NaCl, the sodium formiate of 10%, dodecyl benzyl dimethyl ammonium chloride, the surplus of 0.2% of 10% be fresh water; Its density: 1.19g/cm
3.
Embodiment 2
Solid Free water-based insulation packer fluids 2 comprise the xanthan gum of 0.6%, 0.5% day cyanines glue, the Diethylene Glycol of 30%, NaCl, the potassium formiate of 10%, dodecyl benzyl dimethyl ammonium chloride, the surplus of 0.2% of 15% are fresh water; Its density: 1.20g/cm
3.
Embodiment 3
Solid Free water-based insulation packer fluids 3 comprise 0.5% xanthan gum, 0.8% melon glue, 20% Diethylene Glycol, 10% poly(oxyethylene glycol) 400,0.2% dodecyl dimethyl benzyl ammonium bromide, the NaCl of 15%, NaBr, the surplus of 15% be fresh water; Its density: 1.23g/cm
3.
Embodiment 4
Solid Free water-based insulation packer fluids 4 comprise the xanthan gum of 0.9%, sesbania gum, the ethylene glycol of 18%, NaCl, the KCl of 15%, polyquaternium, the surplus of 0.6% of 15% of 0.5% is seawater; Its density: 1.20g/cm
3.
Embodiment 5
Solid Free water-based insulation packer fluids 5 comprise the xanthan gum of 0.2%, sesbania gum, the polyacrylamide of 0.5%, glycerol, the KCl of 30%, myristyl benzyl dimethyl ammonium chloride, the surplus of 0.2% of 35% of 0.5% is seawater; Its density: 1.20g/cm
3.
Embodiment 6
Solid Free water-based insulation packer fluids 6 comprise konjak gum, the Macrogol 200 of 25%, the CaCl of 10% of 1.2%
2, 10% potassium formiate, the sodium formiate of 10%, isothiazolinone, the surplus of 0.4% be seawater; Its density: 1.25g/cm
3.
Embodiment 7
Solid Free water-based insulation packer fluids 7 comprise the fenugreek gum of 1.5%, propylene glycol, the NaCl of 30%, dodecyl dimethyl benzyl ammonium bromide, the surplus of 0.6% of 30% is fresh water; Its density: 1.21g/cm
3.
Embodiment 8
Solid Free water-based insulation packer fluids 8 comprise the xanthan gum of 0.5%, glycerol, the KCl of 5%, Peracetic Acid, the surplus of 0.2% of 10% is fresh water; Its density: 1.09g/cm
3.
The preparation method of above-described embodiment 1 ~ 8 Solid Free water-based insulation packer fluids, comprises the following steps:
1) each component raw material is taken by above-mentioned weight percent meter, for subsequent use;
2) polyvalent alcohol is joined in jar, when high-speed stirring, add the salt solution adding different concns after rheology control agent stirs as required successively, finally add sterilant, mix, obtain Solid Free water-based insulation packer fluids.
Comparative example 1:
The heat insulation packer fluids of a kind of oil base prepared by following component
Emulsifying agent: 3.0%; Calcium oxide: 2.5%; Carry and cut agent: 0.5%; Reserve alkali: 1.5%; Organophilic clay: 3.0%; Fluid loss agent: 2.0.0%; Weighting agent: 30%; Aqueous phase: 20%; Oil phase: surplus
Comparative example 2:
The heat insulation packer fluids of the one prepared by following component
Fresh water: 100%
Comparative example 3:
The heat insulation packer fluids of the one prepared by following component
3# white oil: 100%
Embodiment 1 ~ 8 being prepared Solid Free water-based insulation packer fluids 1 ~ 8 and comparative example 1 ~ 3, to carry out performance comparison as shown in table 1:
The heat insulation packer fluids performance of table 1
| Heat insulation packer fluids | AV | PV | YP | Φ6/Φ3 | LSRV | K | ΔT |
| Embodiment 1 | 67 | 35 | 32 | 33/30 | 205000 | 0.3673 | 6.0 |
| Embodiment 2 | 65 | 28 | 37 | 32/28 | 185000 | 0.3765 | 5.4 |
| Embodiment 3 | 99 | 57 | 42 | 39/34 | 291000 | 0.3624 | 5.2 |
| Embodiment 4 | 95 | 51 | 44 | 43/39 | 277000 | 0.4667 | 5.0 |
| Embodiment 5 | 86 | 49 | 37 | 36/31 | 218000 | 0.3546 | 5.6 |
| Embodiment 6 | 92 | 53 | 39 | 41/36 | 235000 | 0.4153 | 5.1 |
| Embodiment 7 | 95 | 52 | 43 | 42/37 | 254000 | 0.3755 | 4.9 |
| Embodiment 8 | 30 | 20 | 10 | 12/10 | 24895 | 0.4989 | 4.0 |
| Comparative example 1 | 19 | 16 | 3 | 5/4 | 47992 | 0.1998 | 6.1 |
| Comparative example 2 | — | — | — | — | — | 0.5878 | 0.45 |
| Comparative example 3 | — | — | — | — | — | 0.1795 | 0.48 |
Note:
AV: drilling fluid apparent viscosity, mPas
PV: drilling fluid plastic viscosity, mPas
YP: drilling fluid yield value, Pa
LSRV: brookfield viscosity, mPas
K: thermal conductivity, w/mk
Δ T: heat insulation packer fluids temperature is down to 28 DEG C of required times from 50 DEG C, h
As can be seen from Table 1, the embodiment of the water base packer fluids of Solid Free of the present invention can be found out, its effect of heat insulation is than fresh water good heat-insulation effect more than 13 times, than 12.5 times of white oil, about the same good with the effect of heat insulation of the oil base packer fluids of comparative example 1, but efficiently solve oil base packer fluids solid precipitation, easily cause environmental pollution and expensive problem.
Other unspecified part is prior art.Although above-described embodiment is to invention has been detailed description; but it is only the present invention's part embodiment; instead of whole embodiment, people can also obtain other embodiments according to the present embodiment under without creative prerequisite, and these embodiments all belong to scope.
Claims (7)
1. be applicable to Solid Free water-based insulation packer fluids for deep water, it is characterized in that: its raw materials by weight meter comprise 0.5 ~ 1.5% rheology control agent, the polyvalent alcohol of 10 ~ 30%, the soluble salt of 5 ~ 30% and 0.2 ~ 0.6% sterilant; Surplus is water;
Described soluble salt is NaCl, KCl, NaBr, CaBr
2, CaCl
2, in potassium formiate and sodium formiate any one or composite;
Described rheology control agent is xanthan gum, guanidine glue, sesbania gum, hydroxypropyl guar gum, konjak gum, fenugreek gum, modified-cellulose, in polyacrylamide any one or composite.
2. be applicable to the Solid Free water-based insulation packer fluids of deep water according to claim 1, it is characterized in that: described polyvalent alcohol be in ethylene glycol, propylene glycol, glycerol, Diethylene Glycol, Macrogol 200 and poly(oxyethylene glycol) 400 any one or composite; Described aqueous phase is fresh water or seawater.
3. be applicable to the Solid Free water-based insulation packer fluids of deep water according to claim 2, it is characterized in that: described sterilant is any one in dodecyl benzyl dimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, myristyl benzyl dimethyl ammonium chloride, polyquaternium, Surchlor GR 60, Peracetic Acid, isothiazolinone, BIT and glutaraldehyde.
4. according to claim 1 or 2 or 3, be applicable to the Solid Free water-based insulation packer fluids of deep water, it is characterized in that: the raw materials by weight meter of described Solid Free water-based insulation packer fluids comprises the rheology control agent of 0.5 ~ 1.3%, polyvalent alcohol, the soluble salt of 5 ~ 30%, sterilant, the surplus of 0.2 ~ 0.4% of 10 ~ 30% is water.
5. be applicable to the Solid Free water-based insulation packer fluids of deep water according to claim 4, it is characterized in that: the raw materials by weight meter of described Solid Free water-based insulation packer fluids comprise 0.8 ~ 1.3% by xanthan gum, sky cyanines glue and modified-cellulose composite obtain rheology control agent, 10 ~ 30% by Diethylene Glycol and Macrogol 200 composite obtain polyvalent alcohol, 5 ~ 20% by NaCl and sodium formiate composite obtain soluble salt, 0.2 ~ 0.4% sterilant, surplus be water.
6. be applicable to the Solid Free water-based insulation packer fluids of deep water according to claim 5, it is characterized in that: the density of described Solid Free water-based insulation packer fluids is 1.0 ~ 1.3g/cm
3.
7. be applicable to the Solid Free water-based insulation packer fluids of deep water according to claim 6, it is characterized in that: described Solid Free water-based insulation packer fluids by 0.5% xanthan gum, 0.4% sky cyanines glue, 0.3% modified-cellulose, 20% Diethylene Glycol, 10% Macrogol 200,10% sodium-chlor, the sodium formiate of 10%, dodecyl benzyl dimethyl ammonium chloride, the surplus of 0.2% be water; Its density is 1.19g/cm
3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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|---|---|---|---|
| CN201510439676.5A CN105038740A (en) | 2015-07-23 | 2015-07-23 | Solid-free water-base thermal insulation packer fluid suitable for deep water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639971A (en) * | 2016-12-06 | 2017-05-10 | 长江大学 | High pressure-bearing blocking method for perforation shot hole |
| CN106677739A (en) * | 2016-12-06 | 2017-05-17 | 长江大学 | Perforation blasthole blocking method |
| CN106703744A (en) * | 2016-12-06 | 2017-05-24 | 长江大学 | High-pressure-bearing plugging method for fracturing wellhole |
| CN106967396A (en) * | 2017-02-20 | 2017-07-21 | 中国海洋石油总公司 | A kind of low thermal conductivity heat-insulating test fluid and its production and use |
| CN108658516A (en) * | 2018-05-28 | 2018-10-16 | 中国石油大学(华东) | A kind of high temperature resistance thixotroping mortar architecture and preparation method thereof |
| CN116478672A (en) * | 2023-06-25 | 2023-07-25 | 中国石油大学(华东) | Corrosion-resistant low-thermal-conductivity annular protection liquid suitable for deep-sea oil and gas exploitation and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639971A (en) * | 2016-12-06 | 2017-05-10 | 长江大学 | High pressure-bearing blocking method for perforation shot hole |
| CN106677739A (en) * | 2016-12-06 | 2017-05-17 | 长江大学 | Perforation blasthole blocking method |
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| CN116478672A (en) * | 2023-06-25 | 2023-07-25 | 中国石油大学(华东) | Corrosion-resistant low-thermal-conductivity annular protection liquid suitable for deep-sea oil and gas exploitation and preparation method thereof |
| CN116478672B (en) * | 2023-06-25 | 2023-08-18 | 中国石油大学(华东) | Corrosion-resistant low-thermal-conductivity annular protection liquid suitable for deep-sea oil and gas exploitation and preparation method thereof |
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Application publication date: 20151111 |