CN105298458A - Method for relieving downward lag of polymer flooding production well sucker rod - Google Patents
Method for relieving downward lag of polymer flooding production well sucker rod Download PDFInfo
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Abstract
The invention relates to a method for relieving downward lag of a polymer flooding production well sucker rod. The method for relieving the downward lag of the polymer flooding production well sucker rod comprises the following steps: adding a polyamine flocculant, an oxidant, a corrosion inhibitor and an anti-scaling agent to a pumping well in normal production in a wellhead drip dosing manner, wherein the adding amount of the polyamine flocculant is 0.5%-0.8% of the mass of produced liquid of the pumping well, the adding amount of the oxidant is 0.3%-0.7% of mass of the produced liquid of the pumping well, the adding amount of the corrosion inhibitor is 0.1% of mass of the produced liquid of the pumping well, and the adding amount of the anti-scaling agent is 2%-4% of mass of the produced liquid of the pumping well; and forming an associated colloidal solution with ultra-low viscosity by the polyamine flocculant and polyacrylamide in the produced liquid, so that the produced liquid is easily mined from the ground. The associated colloidal solution with ultra-low viscosity is formed by the polyamine flocculant and the polyacrylamide in the produced liquid, so that the produced liquid is easily mined from the ground; the problem of the downward lag of a polymer flooding pumping unit is solved; and the degradation cost is low.
Description
Technical field
The present invention relates to the technical finesse of technical field of oil production engineering polymer displacement oil well Produced Liquid viscosity reduction, be specifically related to the method for the descending delayed releasing of a kind of poly-drive produced well sucker rod.
Background technology
Polymer flooding, since oil industryization application, has achieved good oil displacement efficiency, and keep stable high yield to have certain positive role for oil field, economic and social benefit is remarkable.But from 2000, polymer flooding pump wells occurred that bar is not gone into the well phenomenon successively.Compared with water drive, poly-produced liquid in oil well character of driving is complicated, producing well see poly-after the maximum polished rod load of oil pumper increase compared with water drive and minimum polished rod load comparatively water drive time reduce, sucker rod friction in down stroke increases, bottom sucker rod increases by compressive load, and when load is greater than rod string critical bends load, sucker rod unstability will occur and bends, produce rod and tube partial-wear, serious will make rod parting, oil pipe grinding leak.In addition, because polymer produced fluid viscosity is large, cause fluid to enter pump resistance to increase, especially to the pumpingh well of low submergence, fluid supply capacity difference, in upstroke process, it is slow that highly viscous fluid enters pump speed, pump plunger speed uplink is greater than fluid and enters pump speed, makes at the end of upstroke, enters pump liquid and has little time to be full of plunger and abdicate space, can not unload in time before plunger clashes into liquid level in descending process, sucker rod friction in down stroke also can be caused excessive.Thus causing bar rate of breaking to increase, operation safeguards that well number of times obviously increases, and impact is poly-drives oil well production, and pump detection period shortens greatly, and operating cost increases, and cost for oil production is strengthened.
A large amount of experimental studies, for this problem, has been carried out in oil field, tentatively think that Produced Liquid viscosity increases, and causes rod string friction in down stroke to increase with polymer concentration increase in Produced Liquid, and easily generation unstability bends or eccentric wear.To this, the measure that can take has a lot, and the research such as Xu Jiajun is thought, one uses sucker rod base-weighted technology, and neutral point is moved down, and increases lower action edge; Its two renwing stratums pressure, keeps stratum energy to go up; Its three uses Novel sucker rod, oil well pump technology, the minimizing of these methods to sucker rod resistance has certain effect, but can not address this problem from root.Current studies in China is mainly started with from two aspects: (1) polymer-bearing produced fluid is non-newtonian fluid, particularly present the viscosity that viscoplasticity adds Produced Liquid at high shear rates, make the resistance in polymer displacement oil well down stroke between oil pump plunger piston and lining, fluid by the resistance of the travelling valve resistance much larger than water drive well, Zhu Jun, Han Hongsheng, Zhao Zigang etc. analyze from this angle simply to this has been, but the force analysis of the emphasis of their work mainly sucker rod, insufficient to the elasticity research of Produced Liquid.(2) normal force effect.Wu Xiaodong etc. think containing conflux body exist in oil well normal force be also cause sucker rod not under reason, Han Hongsheng and Wang Demin etc. confirm by experiment and poly-drive in machine-pumped oil well the power really existing and to act on side along sucker rod on bar, determine the normal force of different polymer concentration under different eccentricity in an experiment, but not to the design formulas of exerting oneself.The following satellite Maxwell models such as willow people calculate interior pipe vertically with the radial load of fluid matasomatism during constant speed movement on sucker rod, but they calculate be stable state time situation, on its impact when not considering that sucker rod moves back and forth.
The descending delayed common method of drive pumping unit extraction well sucker rod is gathered in current solution oil field to be had: one is adopt regular heat to wash technology, the method that heat is washed mainly adopts hot water (about 70 DEG C), at the bottom of rod-pumped well annular space Injection Well, with Produced Liquid by oil pipe together extraction, principle is mainly by improving the temperature of Produced Liquid, reach and reduce Produced Liquid viscosity, take into account cleaning near wellbore zone wax, gum asphalt simultaneously; Main effect is the viscosity being reduced polymer solution in poly-flooding produced liquid by raised temperature; The descending delayed phenomenon of sucker rod is reduced to reach.But the method reduction Produced Liquid viscosity of being washed heating by heat is limited, stops heat washing rear 3-5 days Produced Liquid viscosity and also can recover original state.Two is oxidative degradation technology, and by adding oxidant in washing well process, the oxidizable species such as the polymer in shaft bottom and Produced Liquid, crude oil react, and oxidant, mainly for the polyacrylamide in Produced Liquid, reaches the object reducing Produced Liquid viscosity; Oxidation degradation method specific heat washing method successful, but also there are problems.Cost specific heat is washed and is wanted high, and because most of oxidant all has corrosivity to the metal such as oil pipe and sleeve pipe, so carrying out in oxidative degradation operating process, one is need oxidant concentration to want high, simultaneously in order to prevent the generation of corroding, will add corrosion inhibiter toward contact; Cost is higher.And oxidation product also can serve trouble to follow-up water-oil separating band.
The shortcoming of prior art: prior art cost is higher, needs heavy duty work equipment, as tank car, high pressure pump truck etc.; Inefficiency simultaneously, general polymer displacement oil well hot washing period 1 ~ 2 week, needs operation about 25 ~ 30 times over a year, and each heat is washed needs 10 tons 1 ~ 2, tank car, and high pressure pump truck 1, about operating personnel 6 ~ 10 people.Every subjob needs 10 tons of hot water; If oxidative degradation process, also the inorganic agents such as oxidant are injected underground by extra needs 10 tons of water.
Summary of the invention
The object of the invention is the method for the descending delayed releasing of a kind of poly-drive produced well sucker rod, the method for the descending delayed releasing of this poly-drive produced well sucker rod for solve generally adopt at present heat wash with oxidative degradation existing for costly, cycle short problem.
The technical solution adopted for the present invention to solve the technical problems is: the method for the descending delayed releasing of this poly-drive produced well sucker rod: in the normal rod-pumped well produced, adopt the mode of well head drop dosing, add polyepichlorohydrin amine, oxidant, corrosion inhibiter, scale remover, wherein, the addition of polyepichlorohydrin amine is 0.5% ~ 0.8% of rod-pumped well Produced Liquid quality, the addition of oxidant is 0.3% ~ 0.7% of rod-pumped well Produced Liquid quality, the addition of corrosion inhibiter is 0.1% of rod-pumped well Produced Liquid quality, the addition of scale remover is 2% ~ 4% of rod-pumped well Produced Liquid quality, polyacrylamide in polyepichlorohydrin amine and Produced Liquid forms the association colloid solution of ultra-low viscosity, Produced Liquid is made to be easy to be plucked out of the ground.
The method of the descending delayed releasing of a kind of poly-drive produced well sucker rod: polyepichlorohydrin amine, oxidant, corrosion inhibiter, scale remover, water are mixed to form mixed solution, after mixing, the mass percent concentration of polyepichlorohydrin amine is 0.5% ~ 0.8%, the mass percent concentration of oxidant is 0.3% ~ 0.7%, the mass percent concentration of corrosion inhibiter is 0.1%, the mass percent concentration of scale remover is 2% ~ 4%, and the amount of aqueous solvent is 94.4 ~ 97.2%; For delayed serious or stop the rod-pumped well taken out, in washing well process, by rod-pumped well annular space by the bottom of mixed solution Injection Well, in shaft bottom, oxidant first with the polyacrylamide effect from stratum, oxidized dose of polyacrylamide in stratum is oxidized to the polyacrylamide of molecular weight or carbon dioxide and water, and the polyacrylamide in polyepichlorohydrin amine and Produced Liquid after oxidative degradation forms the association colloid solution of ultra-low viscosity; The mixed solution of Produced Liquid and injection is made to be easy to be plucked out of the ground.
The preparation method of polyepichlorohydrin amine in such scheme:
Adopt the four-hole bottle preparation with stirring and reflux condenser, first in four-hole bottle, add dimethylamine by metering, start agitator, cool in frozen water bath, make dimethylamine cool to less than 10 DEG C; Open the cooling water of reflux condenser, when stirring, epoxychloropropane is dripped with separatory funnel, the mol ratio of epoxychloropropane and dimethylamine is 1:1, makes the temperature in reactor control, at 10 ~ 20 DEG C, to add crosslinking agent diethylenetriamine again after dropwising, whole time for adding is about 2h, then temperature controlled at 60 ~ 75 DEG C, reaction 5 ~ 7h, obtains polyepichlorohydrin amine solution; Polyepichlorohydrin amine solution absolute ethyl alcohol is purified, sediment is vacuum drying 24h at 65 DEG C, obtain polyepichlorohydrin amine solid, the polyepichlorohydrin amine cationic degree prepared by this method is large, molecular weight is large, more easily forms the association colloid solution of ultra-low viscosity with polyacrylamide.
In such scheme, oxidant is SODIUM PERCARBONATE, and corrosion inhibiter is methenamine, and scale remover is sulfamic acid.
In such scheme, in rod-pumped well Produced Liquid, polyacrylamide amine content is 0 ~ 800mg/L, wax content 25 ~ 35%.
In such scheme, the addition of polyepichlorohydrin amine is 0.6% ~ 0.8% of rod-pumped well Produced Liquid quality, now more than 50% is reached to crude oil wax-proofing rate, because Daqing oil field polymer displacement oil well moisture content is all higher, water-soluble poly epichlorohydrin amine (EPI-DMA) can make the brilliant wettability of the surface of wax change, stop new wax crystalline substance deposition and assemble, so have certain wax control result.
The present invention has following beneficial effect:
1, the polyacrylamide in the present invention in polyepichlorohydrin amine and Produced Liquid forms the association colloid solution of ultra-low viscosity, makes Produced Liquid be easy to be plucked out of the ground, solves the descending delayed problem of poly-drive pumping unit, and degraded expense is low, and the cycle is long.
2, viscosity break ratio of the present invention can reach 87.5%, and wax control result is good, and stability is better, and after 10h, viscosity break ratio still can reach 86%.
Accompanying drawing illustrates:
Fig. 1 is EPI-DMA and Na in the present invention
2cO
4synergy HPAM curve map;
Fig. 2 is the experiment of each component of the present invention synergy viscosity reduction;
Fig. 3 is ageing time viscosity reducing effect figure of the present invention.
Detailed description of the invention
The present invention is further illustrated below:
Embodiment 1:
The method of the descending delayed releasing of this poly-drive produced well sucker rod: in the normal rod-pumped well produced, adopt the mode of well head drop dosing, add polyepichlorohydrin amine, sodium carbonate, methenamine, sulfamic acid, wherein, the addition of polyepichlorohydrin amine is 0.5% ~ 0.8% of rod-pumped well Produced Liquid quality, the addition of sodium carbonate is 0.3% ~ 0.7% of rod-pumped well Produced Liquid quality, the addition of methenamine is 0.1% of rod-pumped well Produced Liquid quality, the addition of sulfamic acid is 2% ~ 4% of rod-pumped well Produced Liquid quality, polyacrylamide in polyepichlorohydrin amine and Produced Liquid forms the association colloid solution of ultra-low viscosity, Produced Liquid is made to be easy to be plucked out of the ground.
Utilize that the present embodiment is secret in oil recovery factory of Daqing Oil Field Co., Ltd the 6th has carried out 5 mouthfuls of well field trials, test achieves obvious effect.Achieve good economic benefit.On-the-spot application formula is as follows:
The each dosages distribution of table 1 different well the present invention
Note: selected test well salinity scope in table:
3500 ~ 5500mg/L.
Embodiment 2:
The method of the descending delayed releasing of this poly-drive produced well sucker rod: polyepichlorohydrin amine, SODIUM PERCARBONATE, methenamine, sulfamic acid, water are mixed to form mixed solution, after mixing, the mass percent concentration of polyepichlorohydrin amine is 0.5% ~ 0.8%, the mass percent concentration of SODIUM PERCARBONATE is 0.3% ~ 0.7%, the mass percent concentration of methenamine is 0.1%, the mass percent concentration of sulfamic acid is 2% ~ 4%, and the amount of aqueous solvent is 94.4 ~ 97.2%; For delayed serious or stop the rod-pumped well taken out, in washing well process, by rod-pumped well annular space by the bottom of mixed solution Injection Well, shaft bottom oxidant first with the polyacrylamide effect from stratum, oxidized dose of polyacrylamide in stratum is oxidized to the polyacrylamide of molecular weight or carbon dioxide and water, and the polyacrylamide in polyepichlorohydrin amine and Produced Liquid after oxidative degradation forms the association colloid solution of ultra-low viscosity; The mixed solution of Produced Liquid and injection is made to be easy to be plucked out of the ground.
The preparation method of polyepichlorohydrin amine in the present invention:
The preparation of different molecular weight polyepichlorohydrin amine thinner, the present invention mainly with epoxychloropropane and dimethylamine for comonomer, under the catalytic action of sodium sulfite and sodium hydrogensulfite, prepare target product by polycondensation reaction;
React and carry out in the four-hole bottle with stirring and reflux condenser, first in four-hole bottle, add dimethylamine by metering, start agitator, cool in frozen water bath, make dimethylamine cool to less than 10 DEG C; Open the cooling water of reflux condenser, when stirring, drip epoxychloropropane with separatory funnel, the mol ratio of epoxychloropropane and dimethylamine is 1:1.Because reaction is very exothermic, strictly to control rate of addition, strengthen cooling simultaneously, the temperature in reactor is controlled at 10 ~ 20 DEG C.Add crosslinking agent diethylenetriamine again after dropwising, whole time for adding is about 2h, and then thermostatic control is at 60 ~ 75 DEG C, and reaction 5 ~ 7h, obtains the product synthesized.
Purified by the product absolute ethyl alcohol of synthesis, sediment is vacuum drying 24h at 65 DEG C, obtains polyepichlorohydrin amine solid product, because there is stronger water imbibition, so product should be stored in dryer.
Polyepichlorohydrin amine under different oil-water ratio after viscosity, viscosity break ratio and oil mixing with water state as shown in table 2:
The viscosity reduction efficiency of table 2 polyepichlorohydrin amine under different oil-water ratio
From table 2 measurement result, when adding 0.1% polyepichlorohydrin amine, oil-water mixture does not disperse, but still has embodied certain viscosity reduction ability; When activating agent is 0.4%, when oil-water ratio is 7:3, water-oil emulsion part is disperseed, and oil-water ratio is when 4:6, oil droplet is dispersed into fine particles substantially, viscosity break ratio nearly 80%, and when surfactant concentration is 0.8% time, in mixed liquor, oil basically forms homodisperse tiny oily foam, and viscosity break ratio can reach 87.5%.Suitable polyepichlorohydrin amine concentration is injected according to extraction well oil content during on-the-spot injection.
Polyepichlorohydrin amine and oxidant act synergistically:
Polyepichlorohydrin amine solution (EPI-DMA) is faint yellow viscous liquid, and its cationic degree is higher, and molecular weight is low, soluble in water.Diluted is that 5% and 10% solution is in volumetric flask.Get HPAM solution 100mL, by EPI-DMA and oxidant Na
2cO
4mix by the volume ratio of 1:2, add in HPAM solution, survey its initial viscosity, be placed in 45 DEG C of insulating boxs and leave standstill, every 1 hour record viscosity data, draw form and calculate the change of viscosity break ratio, EPI-DMA and Na
2cO
4hPAM is as Fig. 1 for synergy.
The variation tendency of viscosity break ratio as can be seen from figure, when adding EPI-DMA cation in system, compared with oxidant independent role HPAM, due to the neutralization of electric charge, system electrically changes, the strand of HPAM is rolled up, and causes the reduction of its apparent viscosity, and the viscosity of system can be reduced by more than 90% by EPI-DMA solution.
Polyepichlorohydrin amine wax control result is tested:
Polyepichlorohydrin amine is the agent of a kind of quaternary water-soluble active, and the character that its mechanism of action changes wax deposition surface (oil pipe, sucker rod and equipment surface) works.Because water-soluble activating agent can be adsorbed on wax deposition surface, make it become polar surfaces and have water membrane, unfavorable wax deposits thereon.Therefore, activating agent is the object that character by changing paraffin surface or wax deposition surface reaches wax control.Inhibiting rate for wax precipitation experimental result is as follows:
Compound concentration is respectively 0.4%, the polyepichlorohydrin amine of 0.6%, 0.8% and dispersant, carries out wax control experiment, and experimental result is as following table 3.
Table 3EPI-DMA inhibiting rate for wax precipitation experimental result
This EPI-DMA is only less than 40% when concentration is 0.4% to five mouthfuls of oil well crude oil inhibiting rate for wax precipitation, and EPI-DMA concentration be adjusted to 0.6% and above time, crude oil wax-proofing rate is more than 50%, and therefore selected EPI-DMA consumption is between 0.6% ~ 0.8%.Because Daqing oil field polymer displacement oil well moisture content is all higher, water-soluble EPI-DMA can make the brilliant wettability of the surface of wax change, and stops new wax crystalline substance deposition and assembles, so have certain wax control result.
Hydrin is to pit shaft erosion test:
According to the proportions 50mL solution of EPI-DMA adjustment, corrosion inhibiter is not added in No. 1 colorimetric cylinder, add the corrosion inhibiter 2mL of 0.05%, 0.07%, 0.09%, 0.1%, 0.15% in 2-6 wide-mouth bottle respectively, processed good steel disc submergence is hung in above-mentioned solution.Under 45 DEG C of conditions, take out after 6h, calculate the rate of corrosion of the above-mentioned solution after adjustment.Adding of variable concentrations corrosion inhibiter, EPI-DMA corrosion test result is as shown in table 4.
The inhibition rating results of variable concentrations corrosion inhibiter is added in table 4EPI-DMA
| Steel disc number | Quality before corrosion, g | Quality after corrosion, g | Loss on acid washing quality, g | Corrosion rate, mm ∕ a |
| 1 | 13.9045 | 13.8907 | 0.0007 | 1.4253 |
| 2 | 13.9346 | 13.9217 | 0.0009 | 1.3685 |
| 3 | 14.3612 | 14.3491 | 0.0008 | 1.2164 |
| 4 | 14.3549 | 14.3485 | 0.0009 | 1.0762 |
| 5 | 13.8743 | 13.8692 | 0.0007 | 0.8429 |
| 6 | 14.3572 | 14.3526 | 0.0008 | 0.7635 |
As can be seen from the table, the corrosion inhibiter adding 0.1% concentration in EPI-DMA just can make corrosion rate meet the requirements of corrosion rate to be less than 1mm/a.
Each component compatibility test of the present invention:
In order to test the synergistic action effect of EPI-DMA and oxidant and acid in the present invention, indoor by 0.4% SODIUM PERCARBONATE, 3% sulfamic acid, 0.6%EPI-DMA prepares, and its volume ratio according to 3:5:2 is mixed, viscosity reduction degradation experiment is carried out to HPAM gel, viscosity break ratio changes experimental result in time as Fig. 2, as seen from Figure 2, above-mentioned component is better to HPAM gel viscosity reducing effect, and especially obvious in front 2h effect, after 6h, viscosity break ratio can reach more than 90%, so, there is between each component good compatibility.
Stability test of the present invention:
According to above-mentioned formulated the present invention, leave standstill aging 2h, 4h, 6h, 8h, 10h respectively, carry out de-plugging experiment, observe different ageing time plugging removal effect, result as shown in Figure 3, as seen from Figure 3, the present invention slightly declines along with the increase viscosity break ratio of ageing time, but declines and not obvious, and after 10h, viscosity break ratio still can reach 86%, therefore, stability of the present invention is better.
In order to reduce sucker rod friction in down stroke, reduce bar to break rate, extend pump detection period, be grouped into by the one-tenth analyzing the delayed material in down-hole, study its rheological equationm of state, on this basis the force-bearing situation of rod string in poly-drive produced well manufacturing process is analyzed, find out and cause the excessive true cause of sucker rod resistance.According to analysis result, the preparation research carrying out pickling formula carries out laboratory test, and whether inspection the present invention can play the effect of viscosity reduction de-plugging, then tests on-the-spot pumpingh well, thus solves the large problem of sucker rod friction in down stroke.
Claims (6)
1. the method for the descending delayed releasing of poly-drive produced well sucker rod, it is characterized in that: the method for the descending delayed releasing of this poly-drive produced well sucker rod: in the normal rod-pumped well produced, adopt the mode of well head drop dosing, add polyepichlorohydrin amine, oxidant, corrosion inhibiter, scale remover, wherein, the addition of polyepichlorohydrin amine is 0.5% ~ 0.8% of rod-pumped well Produced Liquid quality, the addition of oxidant is 0.3% ~ 0.7% of rod-pumped well Produced Liquid quality, the addition of corrosion inhibiter is 0.1% of rod-pumped well Produced Liquid quality, the addition of scale remover is 2% ~ 4% of rod-pumped well Produced Liquid quality, polyacrylamide in polyepichlorohydrin amine and Produced Liquid forms the association colloid solution of ultra-low viscosity, Produced Liquid is made to be easy to be plucked out of the ground.
2. the method for the descending delayed releasing of poly-drive produced well sucker rod, it is characterized in that: the method for the descending delayed releasing of this poly-drive produced well sucker rod: polyepichlorohydrin amine, oxidant, corrosion inhibiter, scale remover, water are mixed to form mixed solution, after mixing, the mass percent concentration of polyepichlorohydrin amine is 0.5% ~ 0.8%, the mass percent concentration of oxidant is 0.3% ~ 0.7%, the mass percent concentration of corrosion inhibiter is 0.1%, the mass percent concentration of scale remover is 2% ~ 4%, and the amount of aqueous solvent is 94.4 ~ 97.2%; For delayed serious or stop the rod-pumped well taken out, in washing well process, by rod-pumped well annular space by the bottom of mixed solution Injection Well, in shaft bottom, oxidant first with the polyacrylamide effect from stratum, oxidized dose of polyacrylamide in stratum is oxidized to the polyacrylamide of molecular weight or carbon dioxide and water, and the polyacrylamide in polyepichlorohydrin amine and Produced Liquid after oxidative degradation forms the association colloid solution of ultra-low viscosity; The mixed solution of Produced Liquid and injection is made to be easy to be plucked out of the ground.
3. the method for the descending delayed releasing of poly-drive produced well sucker rod according to claim 1 and 2, is characterized in that: the preparation method of described polyepichlorohydrin amine:
Adopt the four-hole bottle preparation with stirring and reflux condenser, first in four-hole bottle, add dimethylamine by metering, start agitator, cool in frozen water bath, make dimethylamine cool to less than 10 DEG C; Open the cooling water of reflux condenser, when stirring, epoxychloropropane is dripped with separatory funnel, the mol ratio of epoxychloropropane and dimethylamine is 1:1, makes the temperature in reactor control, at 10 ~ 20 DEG C, to add crosslinking agent diethylenetriamine again after dropwising, whole time for adding is about 2h, then temperature controlled at 60 ~ 75 DEG C, reaction 5 ~ 7h, obtains the polyepichlorohydrin amine aqueous solution; Purified by polyepichlorohydrin amine aqueous solution absolute ethyl alcohol, sediment is vacuum drying 24h at 65 DEG C, obtains polyepichlorohydrin amine solid.
4. the method for the descending delayed releasing of poly-drive produced well sucker rod according to claim 3, it is characterized in that: described oxidant is SODIUM PERCARBONATE, corrosion inhibiter is methenamine, and scale remover is sulfamic acid.
5. the method for the descending delayed releasing of poly-drive produced well sucker rod according to claim 4, is characterized in that: in described rod-pumped well Produced Liquid, polyacrylamide amine content is 0 ~ 800mg/L, wax content 25 ~ 35%.
6. the method for the descending delayed releasing of poly-drive produced well sucker rod according to claim 5, is characterized in that: the addition of described polyepichlorohydrin amine is 0.6% ~ 0.8% of rod-pumped well Produced Liquid quality.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167696A (en) * | 2016-07-22 | 2016-11-30 | 大庆东宽久久科技有限公司 | The de-plugging of a kind of poly-district increases adopts liquid |
| CN112483045A (en) * | 2020-12-01 | 2021-03-12 | 中国石油天然气股份有限公司 | Method for guiding oil well to add chemicals by using oil well indicator diagram data |
| CN113372892A (en) * | 2020-03-09 | 2021-09-10 | 中国石油化工股份有限公司 | Chemical paraffin removal agent for oil well, preparation method and application thereof, and paraffin removal method for oil well |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479542A (en) * | 1982-11-22 | 1984-10-30 | Exxon Production Research Co. | Enhanced oil recovery process utilizing a lignosulfonate as a _solubilizing agent in an afterflush |
| CN1435464A (en) * | 2002-11-08 | 2003-08-13 | 郝占元 | Borehole synthetic chlorine dioxide blocking remover and broken down method therewith for oil field |
| CN1931736A (en) * | 2006-09-25 | 2007-03-21 | 哈尔滨工业大学 | Degrading and viscosity reducing process for sewage containing oil and polymer |
| CN102093865A (en) * | 2010-12-21 | 2011-06-15 | 中国石油天然气股份有限公司 | Blocking remover for polymer pollutants |
| CN102925128A (en) * | 2012-11-05 | 2013-02-13 | 中国海洋石油总公司 | Compound chemical blocking removing agent of oil field polymer injection well |
| CN103881673A (en) * | 2013-08-13 | 2014-06-25 | 中国石油化工股份有限公司 | Oxidized gel breaker for polymer injection well and preparation method of oxidized gen breaker |
| CN104194757A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oilfield mechanical recovery well and preparation method thereof |
| CN104650837A (en) * | 2013-11-15 | 2015-05-27 | 中国石油天然气股份有限公司 | Blocking remover for removing blockage in polymer flooding well region and its preparation method and use |
-
2015
- 2015-11-28 CN CN201510843700.1A patent/CN105298458B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4479542A (en) * | 1982-11-22 | 1984-10-30 | Exxon Production Research Co. | Enhanced oil recovery process utilizing a lignosulfonate as a _solubilizing agent in an afterflush |
| CN1435464A (en) * | 2002-11-08 | 2003-08-13 | 郝占元 | Borehole synthetic chlorine dioxide blocking remover and broken down method therewith for oil field |
| CN1931736A (en) * | 2006-09-25 | 2007-03-21 | 哈尔滨工业大学 | Degrading and viscosity reducing process for sewage containing oil and polymer |
| CN102093865A (en) * | 2010-12-21 | 2011-06-15 | 中国石油天然气股份有限公司 | Blocking remover for polymer pollutants |
| CN102925128A (en) * | 2012-11-05 | 2013-02-13 | 中国海洋石油总公司 | Compound chemical blocking removing agent of oil field polymer injection well |
| CN103881673A (en) * | 2013-08-13 | 2014-06-25 | 中国石油化工股份有限公司 | Oxidized gel breaker for polymer injection well and preparation method of oxidized gen breaker |
| CN104650837A (en) * | 2013-11-15 | 2015-05-27 | 中国石油天然气股份有限公司 | Blocking remover for removing blockage in polymer flooding well region and its preparation method and use |
| CN104194757A (en) * | 2014-09-23 | 2014-12-10 | 甘肃黑马石化工程有限公司 | Neutral blockage removing agent composition used for oilfield mechanical recovery well and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 尚蕴果: "环氧氯丙烷-二甲胺阳离子聚合物的交联聚合方法", 《中国优秀硕士学位论文全文库工程科技I辑》 * |
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|---|---|---|---|---|
| CN106167696A (en) * | 2016-07-22 | 2016-11-30 | 大庆东宽久久科技有限公司 | The de-plugging of a kind of poly-district increases adopts liquid |
| CN113372892A (en) * | 2020-03-09 | 2021-09-10 | 中国石油化工股份有限公司 | Chemical paraffin removal agent for oil well, preparation method and application thereof, and paraffin removal method for oil well |
| CN113372892B (en) * | 2020-03-09 | 2022-08-09 | 中国石油化工股份有限公司 | Chemical paraffin removal agent for oil well, preparation method and application thereof, and paraffin removal method for oil well |
| CN112483045A (en) * | 2020-12-01 | 2021-03-12 | 中国石油天然气股份有限公司 | Method for guiding oil well to add chemicals by using oil well indicator diagram data |
| CN112483045B (en) * | 2020-12-01 | 2023-04-07 | 中国石油天然气股份有限公司 | Method for guiding oil well to add chemicals by using oil well indicator diagram data |
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| CN105298458B (en) | 2018-08-14 |
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