CN102634327A - Gas field foam drainage agent - Google Patents
Gas field foam drainage agent Download PDFInfo
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- CN102634327A CN102634327A CN201210094720XA CN201210094720A CN102634327A CN 102634327 A CN102634327 A CN 102634327A CN 201210094720X A CN201210094720X A CN 201210094720XA CN 201210094720 A CN201210094720 A CN 201210094720A CN 102634327 A CN102634327 A CN 102634327A
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Abstract
The invention discloses a gas field foam drainage agent which comprises the components in parts by weight: 95-105 parts of surface active agent, 3-7 parts of methyl cellulose and 5-10 parts of bubble control agent, wherein the surface active agent comprises soapberry extract, imidazoline, dodecyl dimethyl betaine according to the weight ratio of 1-2: 1-2: 1-2. The foam generated by the gas field foam drainage agent in water has good stability, and the stability of the foam reaches 141mm; the water content of the foam is less than or equal to 2.18%; and the mineralization resistance is 200000mg/L, the condensate oil resistance is 30%, the temperature resistance is more than 90 DEG C, and the optimal effective concentration is 3-5%. Furthermore, the gas field foam drainage agent is non-toxic, easily degraded and free from pollution to the environment.
Description
Technical field
The present invention relates to a kind of low-pressure foam water discharge agent of a kind of gas field foaming water discharge agent, particularly oil-gas field development field.Belong to the oilfield chemical technology field,
Background technology
The local water that the gas field produces when exploitation will cause influence in various degree to the production of Sweet natural gas.The source of local water mainly contains two aspects: the one, and free-water in the stratum, the immersion of Ru Bianshui, Di Shui, middle water; The 2nd, after the Sweet natural gas that contains aqueous vapor in the stratum gets into pit shaft, the condensation water that occurs owing to the variation of temperature, pressure.
If gas well itself has enough energy, the air-flow that local water will be risen is taken well head out of; If the energy shortage of gas well self; Then local water can reach the accumulation of nearly shaft bottom district owing to slippage effect gradually in pit shaft in air-flow lifting process, and the accumulative liquid phase can cause near the injury on stratum, shaft bottom, contains the liquid saturation ratio and increases; Payzone is because reasons such as " water logging ", " water lock ", " expansions of sensitive clay mineral "; The gas-phase permeation rate is come to harm, possibly cause water seal to hold one's breath, gas well deliverability and ultimate recovery factor reduce; Restricting the ordinary production of gasser, and this injury is difficult to recover; After gas well produces water, make the total energy loss of the gentle liquid-phase tube stream of the seepage resistance that flows into well increase, drawdown pressure reduces, and along with increasingly sharpening of water enchroachment (invasion) influence, can cause gas production rate to reduce, and can cause watered gas well to stop spray when serious.So in the production process of the Sweet natural gas gas well that has aquatic products to go out, how, take local water out of ground to greatest extent, be that the major issue that the water natural gas field must be considered is produced in exploitation avoiding losing under the prerequisite of layer energy significantly.
In order to help gas well to discharge stratum output water, people have used such as drainage technologies such as foaming water discharge, plunger lift draining, ultrasonic atomizatio draining, gaslift draining, split type plunger draining, sucker rod pump draining, rodless botttom-hole pump draining technology.Foam drainaging gas cutting process technology has that equipment is simple, construction easily, instant effect, cost is low, the gas well power loss is few, do not influence the advantage that gas well is produced again, gas production at home and abroad at present is used widely in producing.
Domestic many producers, enterprise have developed the foaming water discharge agent that is applied to the gas well draining; Inspire confidence in the syd foaming water discharge agent of UT-6 that lucky company produces and UT-11 foaming water discharge agent, the development of equipment technology development company of Xi'an Petroleum University etc. like DH92-1 foaming water discharge agent, the Chengdu of scientific and technological development company of Northeastern University development; These foaming water discharge agents are applicable to the operating mode of foam water ratio higher (more than 2.7%), foamy stability general (being lower than 130mm), gas well pressure higher (well head is not less than 6MPa); Gas well with elevated pressures has that enough energy are higher the foam water ratio, the stable not too strong foam of foamy fast, lifting goes out well head in time, thereby bubble row is effective.Yet because the froth stability that produces is general; There are not enough energy fast, lifting goes out well head in time for the ground well (the well head oil pressure is lower than 6MPa) of calming the anger foam; Many foams slippage in pit shaft, shattered to pieces, so bubble row effect is bad, the water of output can not be discharged to well head effectively in the gas well stratum; In well, produce hydrops, thereby have influence on the ordinary production of gas well.
Summary of the invention
The purpose of this invention is to provide the gas field foaming water discharge agent that a kind of foaming power is strong, froth stability is high.
In order to realize above purpose; The technical scheme that the present invention adopted is: a kind of gas field foaming water discharge agent; Component by following weight part is formed: 95～105 parts in tensio-active agent; 3～7 parts of methylcellulose gum, 5～10 parts of foam control agents, wherein tensio-active agent by Seed of Chinese Soapberry extract, tetrahydroglyoxaline, Varion CDG-K according to weight ratio 1～2: 1～2: 1～2 forms.
Wherein foam control agent is the DC-7 foam control agent.
Wherein the Seed of Chinese Soapberry extract can adopt conventional decocting method to extract: add water after Seed of Chinese Soapberry is pulverized and under 80～100 ℃ of conditions, soaked 36～72 hours; Add the flocculation agent flocculation again; After the clarification lixiviate water is evaporated to and contains moisture and be not higher than 5wt%, promptly obtain the Seed of Chinese Soapberry extract.
Wherein flocculation step is not made particular determination, and wherein flocculation agent can adopt Tai-Ace S 150, and flocculation time can be selected 12～24 hours.
Gas field of the present invention foaming water discharge agent; The tensio-active agent that adopts is three kinds of composite forming of surfactant, and Seed of Chinese Soapberry is claimed oil trouble again, belongs to sapindaceous plant; In the pericarp of its thick meat shape, contain saponin; Saponin is simply crumpled just in water can produce foam, is a kind of natural pore forming material, and the Seed of Chinese Soapberry raw material that the Seed of Chinese Soapberry extract is adopted among the present invention refers to the whole fruit of soapberry.Tetrahydroglyoxaline is claimed glyoxalidine again, has good whipability, and has nontoxic, high biological degradability, and existence that can be stable in acid and alkalescence can same yin, yang, nonionogenic tenside is compatible.Varion CDG-K (BS-12) is a kind of zwitterionics, has good thermostability and biological degradability, can mix use with various types of other tensio-active agents.Above-mentioned three's surfactant is share; Surfactant is wherein strengthened each other; Improve foamy stability and anti-ambient interference ability, improve the biological degradability of tensio-active agent simultaneously, the toxicity of reduction foaming water discharge agent and the pollution of environment.The foam control agent that adds can be accelerated the velocity of flow of foam surface liquid, uses the broken bubble of the macrofoam that is produced to speed up, and breaks into tiny little foam by macrofoam, thereby reaches the ability of control foam size, and preferred foam control agent is the DC-7 foam control agent; The methylcellulose gum that adds can improve foamy viscosity, thereby plays the effect of stable foam.
Foaming water discharge agent of the present invention is met the foam that water produced and is had good stability, and froth stability can reach 141mm; The foamy water cut is not higher than 2.18%, and anti-salinity ability reaches 200000mg/L, and the condensate oil ability reaches 30%; The temperature resistance ability reaches more than 90 ℃; Optimum effective concentration is 3-5%, and gas field of the present invention foaming water discharge agent is nontoxic, be prone to degraded, can not pollute environment.Be applicable to low pressure (6MPa) gas well foaming water discharge, the test in place bubble is lined up power and is reached more than 90%; Medicaments such as this low-pressure foam water discharge agent and methyl alcohol, inhibiter, Scale inhibitors have excellent compatibility, with gas, fluid component chemical reaction do not take place; Do not increase the toxicity of gas and products of combustion; Not etching apparatus and pipeline.
Embodiment
Embodiment 1
The gas field foaming water discharge agent of present embodiment is made up of the component of following weight part: 95 parts in tensio-active agent; 3 parts of methylcellulose gum; 5 parts of DC-7 foam control agents (DOW CORNING), wherein tensio-active agent is made up of according to weight ratio Seed of Chinese Soapberry extract, tetrahydroglyoxaline, Varion CDG-K at 1: 2: 2.Wherein the process for extracting of Seed of Chinese Soapberry extract is following:
Get Seed of Chinese Soapberry with its fritter that is ground into 1cm, add water and soaked 36 hours down, add flocculation agent Tai-Ace S 150 flocculation 12 hours then, get supernatant liquid and it is evaporated to contains moisture 5wt%, promptly get the Seed of Chinese Soapberry extract at 80 ℃.
Embodiment 2
The gas field foaming water discharge agent of present embodiment is made up of the component of following weight part: 100 parts in tensio-active agent; 5 parts of methylcellulose gum; 7 parts of DC-7 foam control agents (DOW CORNING), wherein tensio-active agent is made up of according to weight ratio Seed of Chinese Soapberry extract, tetrahydroglyoxaline, Varion CDG-K at 2: 1: 2.Wherein the process for extracting of Seed of Chinese Soapberry extract is following:
Get Seed of Chinese Soapberry with its fritter that is ground into 3cm, add water and soaked 72 hours down, add flocculation agent Tai-Ace S 150 flocculation 18 hours then, get supernatant liquid and it is evaporated to contains moisture 3wt%, promptly get the Seed of Chinese Soapberry extract at 100 ℃.
Embodiment 3
The gas field foaming water discharge agent of present embodiment is made up of the component of following weight part: 105 parts in tensio-active agent; 7 parts of methylcellulose gum; 10 parts of DC-7 foam control agents (DOW CORNING), wherein tensio-active agent is made up of according to weight ratio Seed of Chinese Soapberry extract, tetrahydroglyoxaline, Varion CDG-K at 2: 2: 1.Wherein the process for extracting of Seed of Chinese Soapberry extract is following:
Get Seed of Chinese Soapberry with its fritter that is ground into 2cm, add water and soaked 48 hours down, add flocculation agent Tai-Ace S 150 flocculation 24 hours then, get supernatant liquid and it is evaporated to contains moisture 1wt%, promptly get the Seed of Chinese Soapberry extract at 90 ℃.
Experimental example 1
The foaming power experiment that three kinds of surfactants that relate among the present invention use separately under the same conditions, concrete experimental result is as shown in table 1
Drug concentration: 0.3%;
Temperature: 80 ℃;
Salinity: total ion concentration 100,000 ppm.
Adopt the Ross-Miles method test foaming power of GB/T 13173-2008.
Three kinds of surfactants of table 1 foamed stability are under the same conditions measured the result
| The medicament title | Foaming height (mm) | Froth stability (mm) |
[0030]
| The Seed of Chinese Soapberry extract | 165 | 134 |
| Tetrahydroglyoxaline | 169 | 135 |
| BS-12 | 143 | 112 |
With three kinds of surfactants composite after, the foaming power experiment of using separately under the same conditions, concrete experimental result is as shown in table 2
Composite post-foaming ability of table 2 and froth stability test result
Experimental example 2
The gas field foaming water discharge agent of embodiment 1～3 is got into following simulation test, and simulator comprises that mainly a Luo Shi Latherometer and constant temperature takes the liquid appearance.The mineralized water of this low-pressure foam water discharge agent of different concns at 90 ℃ of simulated formation temperature, simulated formation water 200000mg/L investigated in test; Foaming power and froth stability during anti-30% white oil, take liquid rate and foam water ratio, with the most effective, the most economical working concentration scope of investigation practical requirement of the present invention.Simulated formation water preparation is as follows: take by weighing sodium-chlor 118330mg, magnesium chloride 11670mg, calcium chloride 17330mg, sodium sulfate 52670mg in the 10000ml beaker, then with distilled water diluting to 1L, join to such an extent that total mineralization is the mineralized water of 200000mg/L.Concrete experimental result is as shown in table 3.
Table 3 simulated experiment result
| Embodiment | Drug concentration | Foaming power (mm) | Froth stability (mm) | Fluid-carrying capability (%) | Foam water ratio (%) |
| 1 | 0.5‰ | 132 | 115 | 42.5 | 2.05 |
| 2 | 1.0‰ | 145 | 132 | 64.0 | 2.08 |
| 2 | 1.5‰ | 158 | 136 | 66.5 | 2.11 |
| 2 | 2.0‰ | 165 | 141 | 74.5 | 2.18 |
[0038]?
| 2 | 2.5‰ | 166 | 142 | 78.0 | 2.18 |
| 2 | 3.0‰ | 167 | 145 | 80.5 | 2.20 |
| 2 | 3.5‰ | 168 | 145 | 81.5 | 2.22 |
| 3 | 4.0‰ | 170 | 146 | 82.0 | 2.23 |
Claims (3)
1. gas field foaming water discharge agent; It is characterized in that: the component by following weight part is formed: 95～105 parts in tensio-active agent; 3～7 parts of methylcellulose gum; 5～10 parts of foam control agents, wherein tensio-active agent by Seed of Chinese Soapberry extract, tetrahydroglyoxaline, Varion CDG-K according to weight ratio 1～2: 1～2: 1～2 forms.
2. gas field according to claim 1 foaming water discharge agent; It is characterized in that: said Seed of Chinese Soapberry extract adopts following method to extract and forms: add water after Seed of Chinese Soapberry is pulverized and under 80～100 ℃ of conditions, soaked 36～72 hours; Add the flocculation agent flocculation again; After the clarification lixiviate water is evaporated to and contains moisture and be not higher than 5wt%, promptly obtain the Seed of Chinese Soapberry extract.
3. gas field according to claim 1 foaming water discharge agent is characterized in that: said foam control agent is the DC-7 foam control agent.
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| CN 201210094720 CN102634327B (en) | 2012-04-01 | 2012-04-01 | Gas field foam drainage agent |
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| CN 201210094720 CN102634327B (en) | 2012-04-01 | 2012-04-01 | Gas field foam drainage agent |
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| CN102634327B CN102634327B (en) | 2013-12-25 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103059826A (en) * | 2013-01-06 | 2013-04-24 | 中国石油化工股份有限公司 | Foam water-drainage agent and its aqueous solution |
| CN103468234A (en) * | 2013-09-07 | 2013-12-25 | 中国石油集团西部钻探工程有限公司 | Foam discharging balls for gas well and preparation method thereof |
| CN103867170A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Low-yield low-pressure gas well self-gas-production foam liquid drainage method |
| CN103937479A (en) * | 2014-02-26 | 2014-07-23 | 中国石油化工股份有限公司 | Foaming material for gas field foam discharging agent, slow dissolving foam discharging agent, and preparation method of slow dissolving foam discharging agent |
| CN104342096A (en) * | 2013-08-02 | 2015-02-11 | 中国石油天然气股份有限公司 | Slow-release foaming agent |
| CN106753308A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气股份有限公司 | Foaming agent with oil resistance and low water content |
| CN110553940A (en) * | 2019-07-22 | 2019-12-10 | 中国石油化工股份有限公司 | method for measuring in-situ mechanical properties of gel particles |
| CN112111259A (en) * | 2020-09-09 | 2020-12-22 | 长江大学 | Nonionic-anionic composite surfactant and preparation method and application thereof |
| CN112877052A (en) * | 2021-02-08 | 2021-06-01 | 四川圣诺油气工程技术服务有限公司 | Preparation method of sinking type liquid delay foaming agent for gas production foam drainage and sand carrying |
| CN112961659A (en) * | 2021-02-08 | 2021-06-15 | 四川圣诺油气工程技术服务有限公司 | Sinking type liquid delay foaming agent for gas production foam drainage and sand carrying |
| CN116042203A (en) * | 2023-03-31 | 2023-05-02 | 西南石油大学 | Temperature-sensitive foam discharging agent system suitable for high-temperature high-salt gas reservoir as well as preparation method and application thereof |
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| CN101492599A (en) * | 2009-02-28 | 2009-07-29 | 成都孚吉科技有限公司 | Foaming water discharge agent and its preparation |
| CN101899290A (en) * | 2010-05-20 | 2010-12-01 | 大庆油田有限责任公司 | Foam discharging agent used for drainage gas recovery in high-temperature water-producing gas well |
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| US5128046A (en) * | 1990-04-16 | 1992-07-07 | Nalco Chemical Company | Water clarification through chelation |
| CN101492599A (en) * | 2009-02-28 | 2009-07-29 | 成都孚吉科技有限公司 | Foaming water discharge agent and its preparation |
| CN101899290A (en) * | 2010-05-20 | 2010-12-01 | 大庆油田有限责任公司 | Foam discharging agent used for drainage gas recovery in high-temperature water-producing gas well |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867170A (en) * | 2012-12-10 | 2014-06-18 | 中国石油天然气股份有限公司 | Low-yield low-pressure gas well self-gas-production foam liquid drainage method |
| CN103867170B (en) * | 2012-12-10 | 2016-05-11 | 中国石油天然气股份有限公司 | Low-yield low-pressure gas well self-gas-production foam liquid drainage method |
| CN103059826A (en) * | 2013-01-06 | 2013-04-24 | 中国石油化工股份有限公司 | Foam water-drainage agent and its aqueous solution |
| CN104342096A (en) * | 2013-08-02 | 2015-02-11 | 中国石油天然气股份有限公司 | Slow-release foaming agent |
| CN103468234A (en) * | 2013-09-07 | 2013-12-25 | 中国石油集团西部钻探工程有限公司 | Foam discharging balls for gas well and preparation method thereof |
| CN103468234B (en) * | 2013-09-07 | 2016-03-02 | 中国石油集团西部钻探工程有限公司 | Gas well bubble vollyball and preparation method thereof |
| CN103937479A (en) * | 2014-02-26 | 2014-07-23 | 中国石油化工股份有限公司 | Foaming material for gas field foam discharging agent, slow dissolving foam discharging agent, and preparation method of slow dissolving foam discharging agent |
| CN103937479B (en) * | 2014-02-26 | 2016-08-24 | 中国石油化工股份有限公司 | A kind of gas field foam discharging agent expanded material, slow soluble foam discharging agent and preparation method thereof |
| CN106753308A (en) * | 2016-12-28 | 2017-05-31 | 中国石油天然气股份有限公司 | Foaming agent with oil resistance and low water content |
| CN110553940A (en) * | 2019-07-22 | 2019-12-10 | 中国石油化工股份有限公司 | method for measuring in-situ mechanical properties of gel particles |
| CN110553940B (en) * | 2019-07-22 | 2022-02-22 | 中国石油化工股份有限公司 | Method for measuring in-situ mechanical properties of gel particles |
| CN112111259A (en) * | 2020-09-09 | 2020-12-22 | 长江大学 | Nonionic-anionic composite surfactant and preparation method and application thereof |
| CN112111259B (en) * | 2020-09-09 | 2023-08-22 | 长江大学 | Nonionic-anionic composite surfactant and preparation method and application thereof |
| CN112877052A (en) * | 2021-02-08 | 2021-06-01 | 四川圣诺油气工程技术服务有限公司 | Preparation method of sinking type liquid delay foaming agent for gas production foam drainage and sand carrying |
| CN112961659A (en) * | 2021-02-08 | 2021-06-15 | 四川圣诺油气工程技术服务有限公司 | Sinking type liquid delay foaming agent for gas production foam drainage and sand carrying |
| CN112961659B (en) * | 2021-02-08 | 2022-07-12 | 四川圣诺油气工程技术服务有限公司 | Sinking type liquid delay foaming agent for gas production foam drainage and sand carrying |
| CN112877052B (en) * | 2021-02-08 | 2022-07-22 | 四川圣诺油气工程技术服务有限公司 | Preparation method of sinking type liquid delay foaming agent for gas production foam drainage and sand carrying |
| CN116042203A (en) * | 2023-03-31 | 2023-05-02 | 西南石油大学 | Temperature-sensitive foam discharging agent system suitable for high-temperature high-salt gas reservoir as well as preparation method and application thereof |
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