CN105062453A - Solid foam water draining agent for gas field and preparation method thereof - Google Patents

Solid foam water draining agent for gas field and preparation method thereof Download PDF

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Publication number
CN105062453A
CN105062453A CN201510474663.1A CN201510474663A CN105062453A CN 105062453 A CN105062453 A CN 105062453A CN 201510474663 A CN201510474663 A CN 201510474663A CN 105062453 A CN105062453 A CN 105062453A
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water
foam
agent
solid foam
water discharge
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石国军
王佳佳
侯成涛
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Yangzhou University
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Yangzhou University
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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
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
    • C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
    • 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
    • C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)

Abstract

The invention discloses a solid foam water draining agent for a gas field and a preparation method thereof. The solid foam water draining agent consists of the following raw materials by the mass percentage: 25-40% of sodium dodecyl sulfate (SDS), 10-25% of OP-10, 0.5% of polyacrylamide, 12% of trisodium citrate, and 37.5% of thiourea. SDS, OP-10, polyacrylamide, trisodium citrate and thiourea are compounded to develop a foam draining rod, the liquid carrying capacities of the foam draining rod in different water types are determined, and experimental results show that the foam water draining agent has relatively good liquid carrying capacities in various water types, bubbling is carried out for 15 min, the liquid carrying capacities in an industry standard and an NaHCO3 water type both can reach more than or equal to 65%, moreover, foams are continuous in three water types except the Na2SO4 water type, therefore, the foam water draining rod has lasting efficiency.

Description

A kind of gas field solid foam water discharge agent and preparation method thereof
Technical field
The present invention relates to a kind of gas field foaming water discharge agent, be specifically related to a kind of gas field solid foam water discharge agent and preparation method thereof, belong to field of oilfield chemistry.
Background technology
The many gas wells of China have entered the exploitation middle and later periods, and due to the continuous decline of reservoir pressure, the production water in gas reservoir or condensed liquid can not take pit shaft out of along with gas flow, cause its edge water propelling and end liter waterborne.After for some time, these liquid accumulation are in shaft bottom, and fluid column is formed thereupon, and the output of Sweet natural gas receives and has a strong impact on.If this situation continues, form too much hydrops in pit shaft, back pressure will be greater than reservoir pressure, then causes gas well water logging, and the fluid column assembled in pit shaft also can kill gas well, causes gas well to stop production.
For problem above, in order to improve gas well recovery ratio, having applied various ways carries out liquid discharging gas producing at present, mainly comprises downhole choke water pumping gas production, plunger lift water pumping gas production, foam drainage gas recovery, supercharging suction water pumping gas production and optimizing pipe string water pumping gas production.Wherein, foam drainage gas recovery, the advantage of investing little, instant effect simple to operate with it and being widely used in the exploitation of gas well.So-called foaming water discharge is just through and adds some tensio-active agent with special effect or high molecular polymers in the mineralized water of shaft bottom, local water surface tension is reduced, make it in gas-liquid two-phase mixing perpendicular flow process, produce the multiple physical-chemical effects such as foam, dispersion, drag reduction, washing, aqueous vapor flow state improves, " slippage loss " minimizing in pit shaft, gas-liquid is vertically lifted liquid ability and is raised, and reaches the object of water pumping gas production with this.Helping of it is adopted effect and is then realized by bubble effect, dispersion effect, washing effect and drag reduction effect, wherein bubble effect injects whipping agent in pit shaft, under the stirring of air-flow, make whipping agent be dissolved in mixing wastewater with air mutually in, then shaft bottom hydrops is taken out of by pit shaft with the form of foam.
Document 1 (Heilungkiang scientific and technical information .2010 the 23rd volume, 51 pages) for the air water feature of gas field high temperature, deep-well, composite go out high temperature bubble row XS-1, adopt the tilt-pour process method such as (Ross-Miles method) to carry out foaming properties research, the latherability of novel foam discharging agent XS-1, fluid-carrying capability, thermostability are analyzed and studied.By testing under different concns SDS, BS, PO, determining optimum proportioning, being re-dubbed XS-1 type foam discharging agent.Then tilt-pour process (Ross-Miles method) is adopted to measure foaming power and foam stability energy.
Document 2 (gas industry .2007 the 27th volume, 85-87 page) is for the bad situation of gas-condensate well conventional foam discharging agent drainage effect, and condensate oil foam discharging agent HY-4 has been prepared in research.This agent has special Shuangzi structure and pectination, adopts Ross-Miles method and is dynamically with water law to be studied its foaming properties.
Document 3 (oil-gas field surface engineering .2005 the 24th volume, 50 pages) develop the foam discharging agent-LLS foam discharging agent that a kind of there is in methanol solution good foam performance, note alcohol pipeline can be adopted to note together with methyl alcohol, successfully solve conventional foam discharging agent in methanol solution foaming power and fluid-carrying capability poor, close a well in and lay the series of problems such as injecting pipeline.Experimental result shows: (1) LLS foam discharging agent and local water have good compatibleness, can reduce the surface tension of concentrated water by a relatively large margin, and whipability ability and fluid-carrying capability excellence, also have certain corrosion mitigating effect simultaneously.(2) foam discharging agent liquid carry over and foaming power in methanol solution has enhancing to a certain degree, has obvious synergistic effect with methyl alcohol.(3) but the existence of condensate oil can produce certain impact to the whipability ability of LLS foam discharging agent and liquid carry over.
Document 4 (oil and gas chemical industry .2006 the 35th volume, 60-62 page) with surfactant A BS, SDS, OP-10, tween-80, Ninol etc. for host, add a small amount of auxiliary agent simultaneously, as PVA, EDTA, trolamine, lauryl alcohol etc., have developed a kind of foam discharging agent with resistance to high salt, high temperature resistance, oil resistant.First, carry out research to the foaming properties of single tensio-active agent known, the foaminess of pore forming material strengthens with the increase of concentration; Lather volume increases along with the rising of temperature; Foam life reduces along with the rising of temperature.Then have studied foaminess and the stability of binary built whipping agent, finally have rated the performance of foam discharging agent.
Document 5 (gas prospecting and exploitation .2012 the 35th volume, 53-56 page) for the lower natural condition of Sebei Gas Field winter temperature, preferentially have selected the UT-13 type low temperature foam discharging agent in applicable gas field, and in-house laboratory investigation is carried out to this foam discharging agent and carried out field experiment in 3 mouthfuls of wells, experimental result shows: (1) low temperature foam discharging agent UT-13 can solve the problem of the easy frozen block of Sebei Gas Field foam discharging agent, and application UT-13 type foam discharging agent has carried out foaming water discharge experiment in gas field.(2) laboratory experiment and showing 3 mouthfuls of field experiment well Analysis of application result, when using UT-13 type low temperature foam discharging agent, the fluid-carrying capability of bubble blast pit can be significantly improved, increase the gas production rate of gas well, the normal note people of defoamer can be guaranteed, efficiently solve the easy frozen block of foaming water discharge in winter and affect the problem of steeping row's operation and can normally carry out.(3) effect of field application of UT-13 type low temperature foam discharging agent in 3 mouthfuls of wells is better, is practicable in the application and popularization of gas well.
The development of above foam discharging agent is mainly aqua, has transport, storage, a lot of limiting factor such as not low temperature resistant.
Summary of the invention
The present invention is directed to the present situation that existing foaming water discharge agent is mainly aqua, provide a kind of gas field solid foam water discharge agent, this solid foam water discharge agent not only has the advantages such as excellent fluid-carrying capability and simple to operate, easy to carry, consistency of performance, but also has excellent condensate oil, the ability of anti-salinity.
The technical solution realizing the object of the invention is:
A kind of gas field solid foam water discharge agent, is made up of the raw material of following mass percentage content:
Preferred version is:
Above-mentioned solid foam water discharge agent composite in, the mass ratio of surfactant SDS and OP-10 is 2-5:1.
In the use of above-mentioned solid foam water discharge agent, the mass concentration that this solid foam water discharge agent adds when measuring its performance is 4-6 ‰.
The present invention also provides the preparation method of a kind of gas field solid foam water discharge agent, and its key step is:
(1) in beaker, add quantitative SDS and OP-10, stir, 90 DEG C are dried 3 hours;
(2) continue to add quantitative trisodium citrate, thiocarbamide and polyacrylamide, and stir;
(3) left at room temperature more than 12 hours, then compression molding.
The invention has the beneficial effects as follows:
Solid foam water discharge agent of the present invention using sodium lauryl sulphate (SDS) and OP-10 two kinds of surfactants composite as tensio-active agent.Wherein, SDS is a kind of anion surfactant, good with the compatibleness of negatively charged ion, nonionogenic tenside, and soluble in water, is a kind of whipping agent of excellent property; OP-10, i.e. octyl phenol-10 are a kind of nonionogenic tensides, have the performance of good acid-and base-resisting and hard water.Above-mentioned two kinds of tensio-active agents share by the present invention, make the surfactivity of mixed surfactant higher than one-component; Both share the cloud point that can raise OP-10, reduce surface tension simultaneously; And there are in the molecule of two kinds of materials two kinds of hydrophilic groups of different nature, make it have the advantage of anionic and nonionic surface active agent simultaneously, good salt tolerant, alkaline-resisting, heat-resisting ability, anti-capacity of decomposition and dispersing property, and there is excellent compatibility.Polyacrylamide is a kind of high molecular polymer, and molecular weight is large, mainly plays the effect of steady bubble.Trisodium citrate has good water solubility, to the Ca in water 2+, Mg 2+deng metal ion, there is excellent sequestering power, biological degradation can occur, dispersive ability and the feature such as antiredeposition ability is strong.Thiocarbamide then plays the effect of solidifying agent.
Solid foam water discharge agent of the present invention has raw material and is conveniently easy to get, and preparation method is simple, and the product prepared has transport than the aqua of conventional foaming water discharge agent, add and and imitates endurable advantage.In addition, the solid foam water discharge agent that prepared by the present invention also has excellent condensate oil, the ability of anti-salinity.
Embodiment
The present invention is described further to adopt the following example:
Embodiment 1
The present invention by following four kinds of proportionings at NaHCO 3test in water type, four kinds of proportionings are respectively:
The formula of table 1 different content proportioning represents (lower same)
The preparation method of solid foam water discharge agent of the present invention, comprises the steps: that (1) takes 2g polyacrylamide solid, and with a small amount of deionized water dissolving, and it is stand-by to be moved into constant volume in the volumetric flask of 100ml.(2) in beaker, add SDS and OP-10, stir, put into baking oven, temperature remains on DEG C, and the time is 3 hours; (3) trisodium citrate, thiocarbamide and polyacrylamide is added after cooling; (4) ambient temperatare puts more than 12 hours, then compression molding, obtains solid foam water discharge agent finished product.
Embodiment 2
The performance test of the above solid foam water discharge agent, comprises the following steps:
This solid foam water discharge agent finished product is chopped up, takes 1.25g, by a small amount of water dissolution, take 12.5gNaCl and 2.5gCaCl simultaneously 2be dissolved in clean small beaker, then incite somebody to action both constant volumes in 250ml volumetric flask.190ml solution, 10ml sherwood oil is added, constant temperature 10min at 60 DEG C in foaming tube.Nitrogen is passed into test solution with the flow velocity of the pressure of 0.05MPa, 290ml/min.After measuring 15min, foam takes the volume of liquid out of.Repeat experiment until the difference of twice measurement result is not more than 2ml.(SY/T5761 – 1995, industry standard)
Test result is as shown in table 2:
The fluid-carrying capability of table 2 different ingredients in industry standard water type
As can be seen from Table 2, along with the increase of SDS add-on, the reduction of OP-10 add-on, liquid carry over presents the trend first raising and reduce afterwards, may be because of the increase along with anion surfactant SDS add-on, the surface tension of non-ionic surfactant OP-10 reduces, but, continue the add-on increasing SDS, namely when both ratios are 4:1, the lowest surface tension of OP-10 can present the trend of rising on the contrary, namely as shown above, the fluid-carrying capability of formula B in industry standard is all high compared to formula A and formula C, and the fluid time is relatively short, therefore, formula B is selected below screening formulation, to measure its fluid-carrying capability in other water type respectively.
Embodiment 3
Solid foam water discharge agent of the present invention is filled a prescription with the B of embodiment 1.
The performance test of the above solid foam water discharge agent, comprises the following steps:
This solid foam water discharge agent finished product is chopped up, electronic balance takes 1.25g, by a small amount of water dissolution, takes 1.25gNaHCO simultaneously 3be dissolved in clean small beaker, then incite somebody to action both constant volumes in 250ml volumetric flask.180ml solution, 10ml sherwood oil, 10ml methyl alcohol is added, constant temperature 10min at 60 DEG C in foaming tube.Nitrogen is passed into test solution with the flow velocity of the pressure of 0.05MPa, 290ml/min.After measuring 15min, foam takes the volume of liquid out of.Repeat experiment until the difference of twice measurement result is not more than 2ml.
Test result is in table 3.
Embodiment 4
Solid foam water discharge agent of the present invention is filled a prescription with the B of embodiment 1.
The performance test of the above solid foam water discharge agent, comprises the following steps:
This solid foam water discharge agent finished product is chopped up, electronic balance takes 1.25g, by a small amount of water dissolution, take 15gNaCl and 27.5gCaCl2 simultaneously and be dissolved in clean small beaker, then incite somebody to action both constant volumes in 250ml volumetric flask.180ml solution, 10ml sherwood oil, 10ml methyl alcohol is added, constant temperature 10min at 60 DEG C in foaming tube.Nitrogen is passed into test solution with the flow velocity of the pressure of 0.05MPa, 290ml/min.After measuring 15min, foam takes the volume of liquid out of.Repeat experiment until the difference of twice measurement result is not more than 2ml.
Test result is in table 3.
Embodiment 5
Solid foam water discharge agent of the present invention is filled a prescription with the B of embodiment 1.
The performance test of the above solid foam water discharge agent, comprises the following steps:
This solid foam water discharge agent finished product is chopped up, electronic balance takes 1.25g, by a small amount of water dissolution, takes 60gNa simultaneously 2sO 4be dissolved in clean small beaker, then incite somebody to action both constant volumes in 250ml volumetric flask.190ml solution, 10ml sherwood oil is added, constant temperature 10min at 60 DEG C in foaming tube.Nitrogen is passed into test solution with the flow velocity of the pressure of 0.05MPa, 290ml/min.After measuring 15min, foam takes the volume of liquid out of.Repeat experiment until the difference of twice measurement result is not more than 2ml.
Test result is in table 3.
The fluid-carrying capability of table 3 solid foam water discharge agent in different water type
As can be seen from Table 3, this solid foam water discharge agent all has good fluid-carrying capability in various water type, and it is at industry standard and NaHCO 3in water type, its liquid carry over all reaches more than 110ml, far above the 15ml of Industry code requirements, shows the performance of good anti-salinity and adaptation different water type.

Claims (3)

1. a gas field solid foam water discharge agent, is characterized in that, is made up of the raw material of following mass percentage content:
2. gas field according to claim 1 solid foam water discharge agent, is characterized in that, be made up of the raw material of following mass percentage content:
3. a gas field preparation method for solid foam water discharge agent, is characterized in that, its key step is:
(1) add SDS and OP-10 in the reactor, stir, 90 DEG C are dried 3 hours;
(2) continue to add trisodium citrate, thiocarbamide and polyacrylamide, and stir;
(3) left at room temperature more than 12 hours, then compression molding.
CN201510474663.1A 2015-08-05 2015-08-05 Solid foam water draining agent for gas field and preparation method thereof Pending CN105062453A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107090286A (en) * 2017-04-21 2017-08-25 常州市蓝勖化工有限公司 A kind of preparation method of high-temperature stable foam discharging agent
CN107400505A (en) * 2017-07-06 2017-11-28 中国石油天然气股份有限公司 High-temperature solid foam scrubbing agent and preparation method thereof
CN109679630A (en) * 2017-10-18 2019-04-26 中国石油化工股份有限公司 High temperature resistant acid resistant form solid foam water discharge agent and preparation method and application
CN111088020A (en) * 2018-10-23 2020-05-01 中国石油化工股份有限公司 Method for discharging liquid and producing gas by adopting salt-resistant oil-resistant solid foam drainage agent composition
CN111088015A (en) * 2018-10-23 2020-05-01 中国石油化工股份有限公司 Salt-resistant oil-resistant solid foam drainage agent composition and preparation method and application thereof
CN111764878A (en) * 2020-07-07 2020-10-13 成都立联科能源科技有限公司 Nano-foam lifting liquid drainage gas production rod and preparation method and application thereof
CN117664784A (en) * 2024-01-31 2024-03-08 西南石油大学 Dynamic evaluation method for foam discharging agent in time dimension

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CN103087698A (en) * 2013-01-18 2013-05-08 陕西驭腾实业有限公司 Solid foamed drainage agent for natural gas well and preparation method of solid foamed drainage agent
CN104342097A (en) * 2013-08-09 2015-02-11 中国石油天然气股份有限公司 Solid foam drainage agent for gas field

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107090286A (en) * 2017-04-21 2017-08-25 常州市蓝勖化工有限公司 A kind of preparation method of high-temperature stable foam discharging agent
CN107400505A (en) * 2017-07-06 2017-11-28 中国石油天然气股份有限公司 High-temperature solid foam scrubbing agent and preparation method thereof
CN107400505B (en) * 2017-07-06 2020-11-24 中国石油天然气股份有限公司 High-temperature solid foam scrubbing agent and preparation method thereof
CN109679630A (en) * 2017-10-18 2019-04-26 中国石油化工股份有限公司 High temperature resistant acid resistant form solid foam water discharge agent and preparation method and application
CN109679630B (en) * 2017-10-18 2021-05-11 中国石油化工股份有限公司 High-temperature-resistant acid-resistant solid foam drainage agent, and preparation method and application thereof
CN111088020A (en) * 2018-10-23 2020-05-01 中国石油化工股份有限公司 Method for discharging liquid and producing gas by adopting salt-resistant oil-resistant solid foam drainage agent composition
CN111088015A (en) * 2018-10-23 2020-05-01 中国石油化工股份有限公司 Salt-resistant oil-resistant solid foam drainage agent composition and preparation method and application thereof
CN111088020B (en) * 2018-10-23 2022-12-09 中国石油化工股份有限公司 Method for discharging liquid and producing gas by adopting salt-resistant oil-resistant solid foam drainage agent composition
CN111764878A (en) * 2020-07-07 2020-10-13 成都立联科能源科技有限公司 Nano-foam lifting liquid drainage gas production rod and preparation method and application thereof
CN117664784A (en) * 2024-01-31 2024-03-08 西南石油大学 Dynamic evaluation method for foam discharging agent in time dimension
CN117664784B (en) * 2024-01-31 2024-04-09 西南石油大学 Dynamic evaluation method for foam discharging agent in time dimension

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Application publication date: 20151118