CN102827595A - High temperature profile control agent injected with steam - Google Patents
High temperature profile control agent injected with steam Download PDFInfo
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Abstract
The invention relates to a high temperature profile control agent injected with steam. The profile control agent comprises the following components expressed in weight percentage: 20 to 30 wt% of melamine and 0.15 to 0.2 wt% of polyacrylamide, with the balance being water. The invention also relates to a preparation method for the high temperature profile control agent injected with steam. The method comprises the following steps: successively adding polyacrylamide and melamine into water at normal temperature and normal pressure under the stirring condition of a rotating speed of 60 to 120 rpm and then carrying out continuous stirring for 30 to 60 min at the rotating speed of 60 to 120 rpm so as to obtain the high temperature profile control agent. The invention further relates to a steam flooding high temperature profile control method which mixes steam with the high temperature profile control agent and injects an obtained mixture into a stratum. The high temperature profile control agent injected with steam in the invention has the characteristics of high temperature resistance and strong plugging performance and causes no cold damage to a tubular column in a well bore and an oil reservoir.
Description
Technical field
The present invention relates to a kind of with vapour inject high temp profile control agent and preparation method thereof with and method of use, belong to technical field of petroleum extraction.
Background technology
The Liaohe Oil Field adopts the block of steam driving exploitation to mainly contain neat 40,45 in brocade, Du 229 and hollow 38 etc. at present; Along with improving constantly of steam drive development degree, because interlayer, in-layer heterogeneity and steam overlap, oil reservoir occurs and vertically inhale vapour inequality, steam vapour and phenomenon such as scurry; Cause injecting steam to lose in a large number; Volumetric conformance efficiency reduces, and the moisture rising of recovery well has reduced notes vapour exploitation effect.Therefore, high permeability formation, vapour are scurried passage carries out profile control, to scurry be to improve vapour to drive one of important measures of development effectiveness to envelope.
High temp profile control agent commonly used at present mainly comprises inorganic particle type high temp amendment, gel-like high temp profile control agent and foam type high temp amendment.But there are some shortcomings in the three when using, though inorganic particle type high temp amendment is high temperature resistant, can only carry out shutoff in the immediate vicinity of wellbore; There is temperature tolerance problem poor, that broken through by steam easily in the gel-type amendment; Foam type high temp amendment one is that the whipping agent temperature tolerance of using at present can't satisfy the requirement that vapour drives, and its prescription awaits to improve; The 2nd, the validity period of shutoff is short, the macropore plugging effect is poor.This shows that at the high temp profile control agent of usefulness, plugging effect is relatively poor at present, can't satisfy the steam flood profile control, seal and scurry needs.
In addition, the conventional high-temperature profile control operational procedure that present vapour driving oil recovery is used is: at first stop to annotate vapour, inject high temp profile control agent then, recover to annotate vapour again.The shortcoming of this operation is that operational procedure is loaded down with trivial details, owing to inject cold liquid, there is cold damage in shaft column and oil reservoir, and recovers FT and need consume a large amount of steam, influences the ordinary production and the steam flooding efficient of well pattern.The method of following steam to inject high temp profile control agent can improve the sweep efficiency and the efficiency of displacement of injecting steam, but the high temp profile control agent that this technical requirements is adopted has high heatproof characteristic.
200810094207.4 it is main body with the SEPIGEL 305 that number patented claim has disclosed a kind of; Trimeric cyanamide and formaldehyde are the polymeric system of linking agent; It belongs to the gel-like high temp profile control agent, has the characteristics of good stability heat-resistant salt-resistant, is applicable to the shutoff on 30 ℃ of-110 ℃ of stratum.But in the steam drive oil production process, the temperature of water vapor reaches 350 ℃, so it can't satisfy the requirement of steam drive oil production.The high temp profile control agent that steam drive reservoir is used needs high temperature resistant, and sealing characteristics is strong, can realize the earth formation deep fluid diversion, can not cause cold damage to shaft column and oil reservoir.
Therefore, develop a kind of have high temperature tolerance and a shutoff property inject high temp profile control agent with steam, be still one of this area problem demanding prompt solution.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide and a kind ofly inject high temp profile control agent with vapour, it has high temperature resistant, the characteristics that sealing characteristics is strong, and can not cause cold damage to shaft column and oil reservoir.
The present invention also aims to provide above-mentioned and inject the preparation method of high temp profile control agent and a kind of high-temperature profile control method of steam flood with vapour.
For reaching above-mentioned purpose, the present invention provides a kind of and injects high temp profile control agent with vapour, and by weight percentage, it comprises: trimeric cyanamide 20wt%-30wt%, and SEPIGEL 305 0.15wt%-0.2wt%, surplus is a water.
According to specific embodiments of the present invention, preferably, in above-mentioned high temp profile control agent, said SEPIGEL 305 is a partially hydrolyzed polyacrylamide, and its molecular weight is 1.2 * 10
7, degree of hydrolysis is 23%.
The present invention adopts trimeric cyanamide as the host of injecting high temp profile control agent with vapour, and the trimeric cyanamide chemical property is stable, can be dissolved in hot water, but insoluble or be slightly soluble in cold water; Obvious change takes place with variation of temperature in solvability, in crude oil, does not dissolve.Trimeric cyanamide is under normal pressure, and fusing point is 354 ℃, and rapid heating can distil, and sublimation temperature is 280-300 ℃, and fast cooling meeting crystallization is reduced to 180-220 ℃ like the mixed solution quenching about 320 ℃, has mass crystallization and separates out.The present invention as the host of injecting high temp profile control agent with vapour, adopts the higher dosage of 20wt%-30wt% with trimeric cyanamide, and what make that it makes injects high temp profile control agent with vapour and be applicable to steam drive reservoir.In addition, as the assistant agent that injects high temp profile control agent with vapour, it has been rolling action with SEPIGEL 305 in the present invention.Polyacrylamide solution has certain viscosity, and melamine particles can be suspended in wherein in this solution, and is injected in the pit shaft by being carried.
Of the present inventionly inject the wetting vapour that high temp profile control agent is added to injection, and be sent to the oil reservoir district of heat with high-temperature water vapor (reaching 350 ℃) with vapour.Injection with water vapor; Constantly advance with vapour injection high temp profile control agent and steam; Owing to exist most permeable zone band or vapour to scurry passage in the stratum; And the speed of steam and water mixture is more much bigger than the speed of temperature leading edge, injects high temp profile control agent and steam with vapour and just is easy to scurry marginal zone before the passage arrival temperature along most permeable zone band or vapour.When the heat exchange of marginal zone is reduced to certain temperature before being somebody's turn to do; Under this temperature, inject the trimeric cyanamide of high temp profile control agent with vapour and separate out and form a material band in the hole crystallization, reduce rate of permeation and porosity that high permeability zone or vapour are scurried passage; Change the trend of injecting steam; Thereby reach and alleviate vapour and scurry, eliminate between well and disturb, enlarge the injecting steam swept volume, make oil reservoir in the vertical or on the plane in development degree even, reach the purpose of raising steam drive development effect.Because the carrying out of steam flood, the temperature leading edge continues expansion, and crystalline material will distil or dissolve again, so cause that by the trimeric cyanamide crystallization stopping up is temporary transient and reversible.Accordingly, the dissolved trimeric cyanamide reaches the preceding marginal zone of temperature once more, here separates out again, stops up vapour again and scurries passage.
The present invention also provides the above-mentioned preparation method who injects high temp profile control agent with vapour; It may further comprise the steps: under the rotating speed agitation condition of normal temperature, normal pressure, 60-120 rev/min; Successively SEPIGEL 305 and trimeric cyanamide are added to the water in order; Continue afterwards with 60-120 rev/min rotating speed continuously stirring 30-60 minute, obtain saidly injecting high temp profile control agent with vapour.
The present invention also provides a kind of high-temperature profile control method of steam flood; It may further comprise the steps: with the well head oil pipe is threeway, on one side water receiving steam injection pipeline, the hard tube line of tape splicing vacuum breaker is connected with injection pump on one side; In water filling steam; Inject high temp profile control agent through the injection pump injection is above-mentioned with vapour, inject high temp profile control agent with vapour and mix at oil pipe, brought in the stratum by water vapor simultaneously with water vapor.
In the present invention, inject the consumption of high temp profile control agent with vapour and can control, the amount difference that different wells is used according to the geological condition of oil well.According to on-site experience, preferably, with vapour inject the high temp profile control agent consumption by
Calculate, in the formula, r
1For inject the placement position (degree of depth) of high temp profile control agent with vapour, unit is m; L is a slug length of injecting high temp profile control agent with vapour, and unit is m; H is a shutoff zone of interest thickness, and unit is m;
Be porosity, unit is %.The placement position of injecting high temp profile control agent with vapour is steam-front position (this position temperature is 180 ℃), and the slug length of injecting high temp profile control agent with vapour is the 2%-8% of well spacing.
According to specific embodiments of the present invention, preferably, in the high-temperature profile control method of above-mentioned steam flood, the method for implanting that is adopted is continuous steam injection or intermittently annotates vapour.Wherein, said continuous steam injection is continually in the stratum, to inject water vapor always; Annotate vapour said intermittence and after annotating a certain amount of water vapor, stop for some time, and then then inject water vapor, so repeatedly.The amount of the water vapor that injects and injection with disproportional relation between the amount of vapour injection high temp profile control agent.
According to specific embodiments of the present invention, preferably, in the high-temperature profile control method of above-mentioned steam flood, said mixing water steam and carry out on the face of land or in the down-hole with the step that vapour injects high temp profile control agent.
Trimeric cyanamide provided by the invention is the high temp profile control agent of host, and it has high temperature resistant, the advantage that sealing characteristics is strong; It can be injected into oil reservoir with steam, and crystallization in the hole of earth formation deep realizes the earth formation deep fluid diversion; Effectively shutoff most permeable zone and vapour are scurried passage, enlarge the steam swept volume, and the suction vapour that occurs in the steam flood process is uneven, steam vapour is scurried problem thereby solved; Improve the steam drive development effect, and avoided cold damage that shaft column and oil reservoir are caused.In addition, of the present inventionly inject high temp profile control agent with vapour and have also that the preparation method is simple, the advantage of easy handling.
Description of drawings
Fig. 1 be test case 1 inject the graph of a relation of high temp profile control agent temperature and reduction ratio under different IRs with vapour.
Embodiment
To understand in order technical characterictic of the present invention, purpose and beneficial effect being had more clearly, technical scheme of the present invention is carried out following detailed description, but but can not be interpreted as qualification at present practical range of the present invention.
Embodiment
Present embodiment provides a kind of and injects high temp profile control agent with vapour, and by weight percentage, it comprises: trimeric cyanamide 30wt%, and SEPIGEL 305 0.15wt%, surplus is a water.
The preparation method who injects high temp profile control agent with vapour that present embodiment provides may further comprise the steps: under normal temperature, normal pressure, 80 rev/mins rotating speed agitation condition; Successively SEPIGEL 305 and trimeric cyanamide are added to the water in order; Continue afterwards with 80 rev/mins rotating speed continuously stirring 30 minutes, obtain saidly injecting high temp profile control agent with vapour.
The employed SEPIGEL 305 of present embodiment is a partially hydrolyzed polyacrylamide, and its molecular weight is 1.2 * 10
7, degree of hydrolysis is 23%; Employed trimeric cyanamide is an analytical pure, and reagent station, Shanghai chemical reagent work produces, and molecular weight is 126.12.
This test case is tested and assessed to the crystallizing power with vapour injection high temp profile control agent that embodiment provides.
This test case uses natural core, and uses simulated formation water as displacement liquid.
The experimental installation with vapour injection high temp profile control agent that this test case adopts is that steam drives physical simulating device, and this product is made by Haian Oil Scientific Research Apparatus Co., Ltd..
The experimental technique reference standard SY/T5345-2007 of this test case, it specifically may further comprise the steps:
1. after rock core is measured rate of permeation, weigh in the balance heavily, behind the recording quality, put it in the wide-necked bottle of finding time, find time (vacuum tightness 133Pa) continuously more than the 5h, afterwards the saturation experiments water; And then weigh, the volume with saturation water in the minusing calculating rock core calculates rock pore volume and porosity;
2. the rock core of saturation is packed in the high pressure core holding unit, add ring and press, ring is pressed should be higher than model inlet pressure 2MPa, and (this simulated formation water type is NaHCO with simulated formation water survey rate of permeation
3Type, total mineralization are 2579mg/L, Na
++ K
+Ion content is 727mg/L, HCO
3 -Ion content is 1318mg/L, Cl
-Ion content is 313.88mg/L);
3. unlatching thermostat container, the experimental program according to different is heated to experimental temperature with model; And retaining ring (enclosing) pressure is stable, after calorstat temperature arrives design temperature, more than the constant temperature 5h; Then with constant speed (according to these experiment needs, injection speed is 2mL/min) with the injecting high temp profile control agent with vapour and inject rock core of a certain amount of embodiment, separate out with solid-state form in order to impel material; Guarantee to reach in the hole saturation ratio of desired substance, rock core is cooled to 20 ℃, cooled off 24 hours; Measure the rate of permeation that temperature reduces the back rock core, and compare, the rate of permeation/original permeability with the reduction ratio r=material of computes rate of permeation after saturated with original permeability.
At first estimate this and inject the crystallizing power of high temp profile control agent, promptly add with vapour and inject the degree that high temp profile control agent makes permeability reduction at porous medium with vapour.Rock core is put into core holding unit; Under certain pressure; Be heated to 150 ℃, 170 ℃, 190 ℃, 200 ℃, 210 ℃, 220 ℃, 230 ℃ and 240 ℃ respectively, inject high temp profile control agent with vapour what the above-mentioned embodiment that injects 0.5PV, 1PV, 1.5PV and 2.0PV at each temperature respectively provided.See also shown in Figure 1, Fig. 1 be test case 1 inject the graph of a relation of high temp profile control agent temperature and reduction ratio under different IRs with vapour.
Researchs such as Liu Junrong show: below 400 ℃, variation of temperature only has the increase of trace to rate of permeation, and this variation can ignore (" temperature is to the experimental study of rock permeability influence ", Liu Junrong etc., [J] University of Petroleum journal, 2001,25 (4)).Therefore, in the TR that this test case adopted, can ignore the influence of variation of temperature for rate of permeation.
As can be seen from Figure 1, the reduction ratio of rate of permeation reduces with the increase of temperature and IR, and the adding with vapour injection high temp profile control agent just makes rate of permeation reduce with the increase of temperature and IR; This be because: (1) at high temperature; The solubleness of trimeric cyanamide is big, and the quantity that can dissolve trimeric cyanamide in the solution is many, and it is big that simultaneous temperature reduces amplitude; May promote the crystallization of trimeric cyanamide; So it is more that temperature reduces the trimeric cyanamide that post crystallization goes out, so crystallization go out to inject high temp profile control agent with vapour more, bigger to the reduction degree affect of rate of permeation; (2) the PV number that injects is high, can guarantee the quantity of trimeric cyanamide, guarantees that trimeric cyanamide can sufficient crystallising.It can also be seen that from Fig. 1 under the low temperature, the increase of temperature is big to the influence of reduction ratio, the permeability reduction amplitude is bigger, and after 220 ℃, the reduction amplitude diminishes gradually; When being injected to 0.5PV and injecting high temp profile control agent with vapour, reduction ratio reduces with the increase of temperature, but curve is milder, does not reduce significantly, and when IR be 1PV when above, the attenuating amplitude is just bigger.For guaranteeing to inject the effect that high temp profile control agent reduces rate of permeation with vapour, IR should be greater than 1PV, and implantation temperature should be higher than 220 ℃.
Test case 2 injects the reversibility evaluation that the rate of permeation of high temp profile control agent reduces with vapour
This test case verified add that embodiment provides inject the reversibility that core permeability reduces behind the high temp profile control agent with vapour, experimentize from the direction that is lower than and be higher than initial implantation temperature respectively.
At first get two rock cores that rate of permeation is similar, under 170 ℃ with embodiment provide to inject high temp profile control agent with vapour saturated, rate of permeation is measured in the cooling back.The injection experiments equipment that this test case adopted is with test case 1.One of them rock core is heated to 100 ℃, and injects 100 ℃ of hot water of l or 2PV, the cooling back is measured rate of permeation and is calculated reduction ratio according to initial rate of permeation; Afterwards temperature is risen to 150 ℃, 150 ℃ of hot water of reinject l or 2PV are surveyed its rate of permeation and reduction ratio.In addition, the another one rock core is heated to 190 ℃, injects 190 ℃ of hot water of l or 2PV, the cooling back is measured rate of permeation and is calculated reduction ratio, afterwards temperature is raised to 220 ℃, 240 ℃ and repeats above-mentioned experiment.Experimental result is referring to table 1.
Can find out that from table 1 when injection was lower than 170 ℃ hot water, it is big that rate of permeation and reduction ratio become, and increase with the increase of implantation temperature and IR, but rangeability is little, reduction ratio is 0.76 in the time of 100 ℃, and rate of permeation has only increased by 0.059 μ m
2When injection was higher than 170 ℃ hot water, rate of permeation was near original permeability, and reduction ratio is between 0.9-1, and the temperature of injecting is high more, and reduction ratio just approaches 1 more, and IR is big more, and is just more little with the gap of original permeability.What this test case illustrative embodiment provided can be in the temporary crystallization of porous medium with vapour injection high temp profile control agent, i.e. reduction to rate of permeation has reversibility.
The The reversible experiment result that table 1 rate of permeation reduces
Test case 3 injects the lab simulation parallel two-tube oil displacement experiment of high temp profile control agent with vapour
This test case injects the restraining effect that high temp profile control agent is scurried steam overlap, vapour in the steam flood process for what evaluation embodiment provided with vapour, has designed fill out sand tube parallel connection oil displacement experiment and has simulated heterogeneous reservoir.
This test case uses the fill out sand tube of the silica sand filling of two different rate of permeation, and its length is 30cm, and diameter is 2.5cm, adopts the constant speed displacement to carry out the steam displacement test down at 240 ℃, injects the injection volume 1PV of high temp profile control agent in the experiment with vapour.The injection experiments equipment that this test case adopted is with test case 1.The experimental technique reference standard SY/T5345-2007 of this test case, it may further comprise the steps:
1. the fill out sand tube with above-mentioned two different rate of permeation vacuumizes saturation experiments water afterwards; Measure volume of voids and porosity, and perm-plug method and water phase permeability, viscous crude (experiment uses oil to be the Liaohe Oil Field dewatered oil) displacement used then; Oneself is not moisture up to the liquid of displacing; Be not had movable water in the fill out sand tube, thereby setting up SWB, calculate initial oil saturation;
2. these two fill out sand tube parallel connections are placed on the same plane, import and export the same pressure system of connection, under 240 ℃, carry out steam flood earlier for experiment, steam flood to model exit end is moisture more than 80%, and calculation of steam is driven RF;
3. inject high temp profile control agent according to what experimental program injected 1PV with vapour, it is moisture more than 80% to continue steam flood to model exit end, calculates RF.
The calculation formula of experimental results such as the porosity in the above-mentioned experiment, initial oil saturation and RF is as follows:
φ＝V
p/V
f；
S
o＝V
o/V
p；
η
RF=V
c/ V
o
In the formula,
η
RF---RF, %
V
p---volume of voids, cm
3
V
f---fill out sand tube volume, cm
3
S
o---initial oil saturation, %
V
o---saturated former oil volume, cm
3
V
c---the former oil volume of extraction, cm
3
Experimental result can be found out from table 2 experimental result referring to table 2, injects with behind the vapour injection high temp profile control agent tangible oil increasing effect being arranged.Before injecting high temp profile control agent and inject with vapour, steam flood extraction degree is 46.57%, inject 1PV inject high temp profile control agent with vapour after, RF improves 10.86%, wherein the low-permeability layer increase rate is big, is 20.6%.Its major cause is, the duct is bigger in most permeable zone, and the trimeric cyanamide that injects high temp profile control agent with vapour can and play plugging effect preferably in the macropore crystallization, and rate of permeation is big more, and plugging action is obvious more.This experiment proof: embodiment provides injects with vapour that high temp profile control agent can suppress steam overlap, vapour is scurried phenomenon, improves the sweep efficiency and the RF of steam flood.
The two-tube displacement of reservoir oil simulated experiment of table 2 result
Claims (7)
1. one kind is injected high temp profile control agent with vapour, and by weight percentage, it comprises: trimeric cyanamide 20wt%-30wt%, and SEPIGEL 305 0.15wt%-0.2wt%, surplus is a water.
2. high temp profile control agent as claimed in claim 1, wherein, said SEPIGEL 305 is a partially hydrolyzed polyacrylamide, its molecular weight is 1.2 * 10
7, degree of hydrolysis is 23%.
3. claim 1 or the 2 described preparing methods that inject high temp profile control agent with vapour; It may further comprise the steps: under the rotating speed agitation condition of normal temperature, normal pressure, 60-120 rev/min; Successively SEPIGEL 305 and trimeric cyanamide are added to the water in order; Continue afterwards with 60-120 rev/min rotating speed continuously stirring 30-60 minute, obtain saidly injecting high temp profile control agent with vapour.
4. the high-temperature profile control method of a steam flood, it may further comprise the steps: with the well head oil pipe is threeway, on one side water receiving steam inject pipeline; The hard tube line of tape splicing vacuum breaker is connected with injection pump on one side, in water filling steam, injects with vapour injection high temp profile control agent through injection pump; Injecting high temp profile control agent with vapour mixes at oil pipe with water vapor; Brought in the stratum by water vapor simultaneously, wherein, said to inject high temp profile control agent with vapour be that claim 1 or 2 is describedly injected high temp profile control agent with vapour.
5. the high-temperature profile control method of steam flood as claimed in claim 4, wherein, the said IR of injecting high temp profile control agent with vapour by
Calculate, in the formula, r
1For inject the placement position of high temp profile control agent with vapour, unit is m; L is a slug length of injecting high temp profile control agent with vapour, and unit is m; H is a shutoff zone of interest thickness, and unit is m;
Be porosity, unit is %.
6. like the high-temperature profile control method of claim 4 or 5 described steam floods, wherein, said method for implanting is continuous steam injection or intermittently annotates vapour.
7. like the high-temperature profile control method of claim 4 or 5 described steam floods, wherein, said mixing water steam and carry out on the face of land or in the down-hole with the step that vapour injects high temp profile control agent.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105505354A (en) * | 2015-12-10 | 2016-04-20 | 中国石油天然气股份有限公司 | High-temperature profile control agent and preparation method thereof |
| CN105801760A (en) * | 2016-04-19 | 2016-07-27 | 中国石油天然气股份有限公司 | High-temperature-resistant profile control agent and preparation method thereof |
| CN105860947A (en) * | 2016-04-19 | 2016-08-17 | 中国石油天然气股份有限公司 | Degradation-delayed high temperature-resistant high-salinity profile control agent and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4903767A (en) * | 1988-12-30 | 1990-02-27 | Mobil Oil Corporation | Selective gelation polymer for profile control in CO2 flooding |
| JPH09302198A (en) * | 1996-05-09 | 1997-11-25 | Mitsui Cytec Kk | Highly viscous aqueous fluid composition |
| US20100065271A1 (en) * | 2007-03-22 | 2010-03-18 | Mccrary Avis Lloyd | Low temperature coated particles for use as proppants or in gravel packs, methods for making and using the same |
-
2012
- 2012-08-13 CN CN201210287490.9A patent/CN102827595B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4903767A (en) * | 1988-12-30 | 1990-02-27 | Mobil Oil Corporation | Selective gelation polymer for profile control in CO2 flooding |
| JPH09302198A (en) * | 1996-05-09 | 1997-11-25 | Mitsui Cytec Kk | Highly viscous aqueous fluid composition |
| US20100065271A1 (en) * | 2007-03-22 | 2010-03-18 | Mccrary Avis Lloyd | Low temperature coated particles for use as proppants or in gravel packs, methods for making and using the same |
Non-Patent Citations (4)
| Title |
|---|
| 于涛等: "《油田化学剂》", 31 May 2008, 石油工业出版社 * |
| 蒋大丽: "蒸汽驱控制流度的化学剂研究与效果评价", 《大庆石油学院硕士研究生学位论文》 * |
| 马广彦等: "多羟甲基三聚氰胺的简易制备方法及其在油井堵水中的应用", 《油田化学》 * |
| 齐海鹰等: "高强度封堵技术", 《石油钻采工艺》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105505354A (en) * | 2015-12-10 | 2016-04-20 | 中国石油天然气股份有限公司 | High-temperature profile control agent and preparation method thereof |
| CN105505354B (en) * | 2015-12-10 | 2018-05-04 | 中国石油天然气股份有限公司 | A kind of high temp profile control agent and preparation method thereof |
| CN105801760A (en) * | 2016-04-19 | 2016-07-27 | 中国石油天然气股份有限公司 | High-temperature-resistant profile control agent and preparation method thereof |
| CN105860947A (en) * | 2016-04-19 | 2016-08-17 | 中国石油天然气股份有限公司 | Degradation-delayed high temperature-resistant high-salinity profile control agent and preparation method thereof |
| CN105801760B (en) * | 2016-04-19 | 2018-07-13 | 中国石油天然气股份有限公司 | A kind of heat safe profile control agent and preparation method thereof |
| CN105860947B (en) * | 2016-04-19 | 2018-10-16 | 中国石油天然气股份有限公司 | A kind of profile control agent and preparation method thereof of slow degradation high temperature resistant high salinity |
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| CN102827595B (en) | 2015-02-25 |
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