CN111269703B - Intelligent steering agent for coal bed gas exploitation and preparation method thereof - Google Patents

Intelligent steering agent for coal bed gas exploitation and preparation method thereof Download PDF

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CN111269703B
CN111269703B CN202010164238.3A CN202010164238A CN111269703B CN 111269703 B CN111269703 B CN 111269703B CN 202010164238 A CN202010164238 A CN 202010164238A CN 111269703 B CN111269703 B CN 111269703B
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intelligent steering
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steering agent
water
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CN111269703A (en
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刘平礼
卢泓羽
赵立强
徐昆
张以明
罗志峰
张全江
毛生发
李年银
王晓东
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Chengdu Anside Petroleum Technology Development Co ltd
Petrochina Co Ltd
Southwest Petroleum University
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Petrochina Co Ltd
Southwest Petroleum University
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Abstract

The invention discloses an intelligent steering agent for coal bed gas exploitation and a preparation method thereof, wherein the intelligent steering agent comprises the following components in percentage by weight: 5 to 15 percent of glucosamine hydrochloride, 10 to 20 percent of N-methyl-D-glucosamine hydrochloride, 1 to 20 percent of water-soluble regulator, 0.2 to 0.5 percent of surfactant, 0.1 to 0.2 percent of dispersing mutual solvent, 5 to 20 percent of acrylamide, 1 to 10 percent of N, N-methylene bisacrylic acid amine, 5 to 10 percent of accelerator and 50 to 60 percent of water. The intelligent steering agent is in a liquid state under the ground condition, has low viscosity and good injectability; after the intelligent steering agent is injected into a coal bed, the intelligent steering agent can be subjected to temperature stimulation to change from a liquid state to a solid state under the low-temperature condition of a coal reservoir, the phase change time can be adjusted by adjusting the temperature, other temporary plugging agents are not needed to be added, and the formed solid phase temporary plugging is a non-porous longitudinal plane plugging and a transverse volume plugging, so that the plugging strength is high and no gap exists.

Description

一种用于煤层气开采的智能转向剂及其制备方法A kind of intelligent steering agent for coalbed methane exploitation and preparation method thereof

技术领域technical field

本发明涉及一种应用于煤层气暂堵转向的智能转向剂的制备方法,属于煤层气开采技术领域。The invention relates to a preparation method of an intelligent steering agent used in coalbed methane temporary blockage diversion, and belongs to the technical field of coalbed methane exploitation.

技术背景technical background

目前国内煤层气产业总体进展缓慢,低阶煤煤层气高效开发、已开发区增产提效和深部煤层气及煤系气综合开发等技术瓶颈还未突破,地面煤层气井普遍产量低、不稳定,现有技术难以支撑产业快速发展的问题仍待解决。At present, the overall progress of the domestic coalbed methane industry is slow. Technical bottlenecks such as efficient development of low-rank coalbed methane, production increase and efficiency improvement in developed areas, and comprehensive development of deep coalbed methane and coal-measure gas have not yet been broken through. Surface coalbed methane wells generally have low and unstable production. The problem that the existing technology is difficult to support the rapid development of the industry still needs to be solved.

目前应用于煤层气暂堵转向的暂堵剂极少,主要是在地面条件下呈固相颗粒或纤维状的暂堵剂,存在问题有:难以实现携带液的均匀携带;形成的颗粒屏蔽暂堵存在孔隙为颗粒堵塞,颗粒与颗粒之间存在孔隙,可能出现堵塞不完全或堵不住的情况;对储层易产生伤害等。因此,结合煤储层松软、表面积大、吸附性强、压力低、天然裂缝系统发育等普遍特点,研制出了一种用于煤层气开采的智能转向剂,该智能转向剂在地面条件下呈液态状,注入煤层后受温度刺激由液态状相变为固态状,对煤层形成无孔的纵向平面堵塞以及横向的体积堵塞,再在一定温度和时间条件下能由固态状完全相变为液态状,可顺利返排,且施工方便、封堵强度高。At present, there are very few temporary plugging agents used in the temporary plugging and diversion of coalbed methane. They are mainly solid phase particles or fibrous temporary plugging agents under ground conditions. The existing problems are: it is difficult to realize the uniform carrying of the carrier fluid; Pores are blocked by particles, and there are pores between particles, which may be incomplete or impossible to block; it is easy to cause damage to the reservoir, etc. Therefore, combined with the common characteristics of coal reservoirs such as softness, large surface area, strong adsorption, low pressure, and natural fracture system development, a smart steering agent for coalbed methane mining was developed. Liquid state, after being injected into the coal seam, it will change from a liquid state to a solid state due to temperature stimulation, forming a non-porous longitudinal plane blockage and a horizontal volume blockage on the coal seam, and then it can completely change from a solid state to a liquid state under certain temperature and time conditions shape, can flow back smoothly, and is convenient for construction and high in plugging strength.

发明内容Contents of the invention

本发明的目的在于提供一种用于煤层气开采的智能转向剂,该智能转向剂在地面条件下呈液态状,在煤层中由液态状相变为固态状,相变时间可控,强度高,承压能力强,转向效果好,具有较好的应用前景。The object of the present invention is to provide an intelligent steering agent for coalbed methane exploitation, the intelligent steering agent is in a liquid state under ground conditions, and changes from a liquid state to a solid state in a coal seam, with controllable phase transition time and high strength , strong pressure bearing capacity, good steering effect, and good application prospects.

本发明的另一目的在于提供一种智能转向剂的制备方法,该方法制备工艺简单,可控性强,适合大规模生产。Another object of the present invention is to provide a method for preparing an intelligent steering agent, which has a simple preparation process, strong controllability, and is suitable for large-scale production.

本发明解决其技术问题是采用以下技术方案来实现:The present invention solves its technical problem and adopts the following technical solutions to realize:

本发明提出一种智能转向剂,按重量百分比计,包括:葡萄糖胺盐酸盐5~15%,N-甲基-D-葡糖胺盐酸盐10~20%,水溶性调节剂1~20%,表面活性剂0.2~0.5%,分散互溶剂0.1~0.2%,丙烯酰胺5~20%,N,N亚甲基双丙烯酸胺1~10%,促进剂5~10%,水50~60%,The present invention proposes an intelligent steering agent, comprising: 5-15% of glucosamine hydrochloride, 10-20% of N-methyl-D-glucosamine hydrochloride, and 1-20% of water-soluble regulator in terms of weight percentage. 20%, surfactant 0.2~0.5%, dispersing mutual solvent 0.1~0.2%, acrylamide 5~20%, N,N methylene bisacrylamine 1~10%, accelerator 5~10%, water 50~ 60%,

所述水溶性调节剂为乳酸、乙酸、酒石酸、苹果酸、富马酸等;The water-soluble regulator is lactic acid, acetic acid, tartaric acid, malic acid, fumaric acid, etc.;

所述表面活性剂为聚氧乙烯烷基苯酚醚、烷基芳基磺酸钠、十二烷基苯磺酸钠;The surfactant is polyoxyethylene alkylphenol ether, sodium alkylarylsulfonate, sodium dodecylbenzenesulfonate;

所述分散互溶剂为异丙醇、乙二醇单丁醚、油酸钠、己烯基双硬脂酰胺;The dispersing mutual solvent is isopropanol, ethylene glycol monobutyl ether, sodium oleate, hexenyl bis stearamide;

所述促进剂为三乙醇胺、甲醛、四甲基硫脲、肉桂醛、对氯代苯甲酸、香草醛等。The accelerator is triethanolamine, formaldehyde, tetramethylthiourea, cinnamaldehyde, p-chlorobenzoic acid, vanillin and the like.

该智能转向剂的制备过程为:首先取一定量的水,然后分别向其中加入葡萄糖胺盐酸盐、N-甲基-D-葡糖胺盐酸盐、水溶性调节剂、表面活性剂、分散互溶剂,然后搅拌均匀,配成智能转向剂主剂;丙烯酰胺、N,N亚甲基双丙烯酸胺和促进剂按一定比例混合配成智能转向剂辅剂。The preparation process of the intelligent steering agent is as follows: first take a certain amount of water, then add glucosamine hydrochloride, N-methyl-D-glucosamine hydrochloride, water-soluble regulator, surfactant, Disperse the mutual solvent, then stir it evenly to make the main agent of the intelligent steering agent; mix acrylamide, N,N methylenebisacrylamide and accelerator in a certain proportion to make the auxiliary agent of the intelligent steering agent.

智能转向剂现场泵入方法及流程如下:智能转向剂主剂和辅剂要分开注入,其中主剂从混砂车较高排量注入,辅剂采用泵小排量注入;按照压裂设计,注入第一段压裂液,压开第一条裂缝;按所需要的比例注入智能转向主剂和辅剂,使其在井筒中混合,进入裂缝,形成暂堵;The on-site pumping method and process of the intelligent steering agent are as follows: the main agent and the auxiliary agent of the intelligent steering agent should be injected separately, the main agent is injected from the higher displacement of the sand mixer, and the auxiliary agent is injected by the small displacement of the pump; according to the fracturing design, Inject the first stage of fracturing fluid to open the first fracture; inject the intelligent steering agent and auxiliary agent according to the required ratio to mix in the wellbore and enter the fracture to form a temporary plug;

与现有煤层气暂堵转向剂技术相比,本发明具有以下有益效果:Compared with the existing coalbed methane temporary plugging and diverting agent technology, the present invention has the following beneficial effects:

(1)该智能转向剂在地面条件下呈液态状,粘度低,具有良好的注入性;(1) The intelligent steering agent is in a liquid state under ground conditions, with low viscosity and good injectability;

(2)该智能转向剂注入煤层后可在煤储层的低温条件下受温度刺激由液态状相变为固态状,相变时间可通过调节温度,不需添加其它暂堵剂,形成的固相暂堵为无孔的纵向平面堵塞以及横向体积堵塞,堵塞强度高、无缝隙;(2) After the intelligent steering agent is injected into the coal seam, it can be stimulated by the temperature to change from a liquid state to a solid state under the low temperature condition of the coal reservoir. The phase change time can be adjusted by adjusting the temperature without adding other temporary plugging agents. Phase temporary blockage is non-porous longitudinal plane blockage and transverse volume blockage, with high blockage strength and no gaps;

(3)该智能转向剂再在一定温度和时间条件下能由固态状完全液化为液态状,液化液粘度低、易返排,不会造成煤层残留伤害。(3) The intelligent steering agent can completely liquefy from a solid state to a liquid state under certain temperature and time conditions. The liquefied liquid has low viscosity and is easy to flow back without causing residual damage to the coal seam.

附图说明Description of drawings

图1是智能转向剂浸泡后煤的吸附解吸曲线图。Figure 1 is the adsorption and desorption curve of coal after soaking in intelligent steering agent.

具体实施方式Detailed ways

实施例1Example 1

首先取5g的乳酸于69.4g水溶液,然后分别向其中加入葡萄糖胺盐酸盐(15g)、N-甲基-D-葡糖胺盐酸盐(10g)、烷基芳基磺酸钠(0.4g)、异丙醇(0.2g)搅拌混合均匀,80℃氮气保护反应6小时,即配制成了智能转向剂主剂;取丙烯酰胺(70g)、N,N亚甲基双丙烯酸胺(20g)、三乙醇胺(10g)搅拌混合均匀,60℃反应5小时即配制成了辅剂。First take 5g of lactic acid in 69.4g of aqueous solution, then add glucosamine hydrochloride (15g), N-methyl-D-glucosamine hydrochloride (10g), sodium alkylarylsulfonate (0.4 g), isopropanol (0.2g) were stirred and mixed evenly, and reacted under nitrogen protection at 80°C for 6 hours, and the main agent of the intelligent steering agent was prepared; ), triethanolamine (10g) were stirred and mixed evenly, and reacted at 60° C. for 5 hours to prepare the auxiliary agent.

将配制好的智能转向主剂和辅剂按100:4的质量比例配制好,混合均匀放入40℃水浴加热,每隔1min观察现象,记录其开始固化时间、完全成胶固化时间、开始液化时间及液化率。该配比下的智能转向剂13min后开始固化,26min后完全有液态状相变为固态状,60min时开始液化,在220min时液化率达到42.9%,在60天左右完全液化。Prepare the prepared intelligent steering main agent and auxiliary agent according to the mass ratio of 100:4, mix them evenly and put them in a 40°C water bath to heat, observe the phenomenon every 1 minute, and record the starting time of curing, the time of complete gelation and curing, and the beginning of liquefaction time and liquefaction rate. The intelligent steering agent under this ratio starts to solidify after 13 minutes, completely changes from a liquid state to a solid state after 26 minutes, starts to liquefy at 60 minutes, and reaches a liquefaction rate of 42.9% at 220 minutes, and completely liquefies in about 60 days.

实施例2Example 2

首先取5g的乳酸于69.4g水溶液,然后分别向其中加入葡萄糖胺盐酸盐(15g)、N-甲基-D-葡糖胺盐酸盐(10g)、烷基芳基磺酸钠(0.4g)、异丙醇(0.2g)搅拌混合均匀,80℃氮气保护反应6小时,即配制成了智能转向剂主剂;取丙烯酰胺(70g)、N,N亚甲基双丙烯酸胺(20g)、三乙醇胺(10g)搅拌混合均匀,60℃反应5小时即配制成了辅剂。First take 5g of lactic acid in 69.4g of aqueous solution, then add glucosamine hydrochloride (15g), N-methyl-D-glucosamine hydrochloride (10g), sodium alkylarylsulfonate (0.4 g), isopropanol (0.2g) were stirred and mixed evenly, and reacted under nitrogen protection at 80°C for 6 hours, and the main agent of the intelligent steering agent was prepared; ), triethanolamine (10g) were stirred and mixed evenly, and reacted at 60° C. for 5 hours to prepare the auxiliary agent.

将配制好的智能转向主剂和辅剂按100:6的质量比例配制好,混合均匀放入40℃水浴加热,每隔1min观察现象,记录其开始固化时间、完全成胶固化时间、开始液化时间及液化率。该配比下的智能转向剂9min后开始固化,19min后完全有液态状相变为固态状,55min时开始液化,在165min时液化率达到50%且在接下来的30min内液化率没有增长,在后续观察中发现该配比下的智能转向剂在60天左右完全液化。Prepare the prepared intelligent steering main agent and auxiliary agent according to the mass ratio of 100:6, mix evenly and put it in a 40°C water bath to heat, observe the phenomenon every 1 minute, and record the starting time of curing, the time of complete gelation and curing, and the beginning of liquefaction time and liquefaction rate. The intelligent steering agent under this ratio starts to solidify after 9 minutes, completely changes from a liquid state to a solid state after 19 minutes, and starts to liquefy at 55 minutes, and the liquefaction rate reaches 50% at 165 minutes, and the liquefaction rate does not increase in the next 30 minutes. In the follow-up observation, it was found that the intelligent steering agent under this ratio was completely liquefied in about 60 days.

实施例3Example 3

首先取5g的乳酸于69.4g水溶液,然后分别向其中加入葡萄糖胺盐酸盐(15g)、N-甲基-D-葡糖胺盐酸盐(10g)、烷基芳基磺酸钠(0.4g)、异丙醇(0.2g)搅拌混合均匀,80℃氮气保护反应6小时,即配制成了智能转向剂主剂;取丙烯酰胺(70g)、N,N亚甲基双丙烯酸胺(20g)、三乙醇胺(10g)搅拌混合均匀,60℃反应5小时即配制成了辅剂。First take 5g of lactic acid in 69.4g of aqueous solution, then add glucosamine hydrochloride (15g), N-methyl-D-glucosamine hydrochloride (10g), sodium alkylarylsulfonate (0.4 g), isopropanol (0.2g) were stirred and mixed evenly, and reacted under nitrogen protection at 80°C for 6 hours, and the main agent of the intelligent steering agent was prepared; ), triethanolamine (10g) were stirred and mixed evenly, and reacted at 60° C. for 5 hours to prepare the auxiliary agent.

将配制好的智能转向主剂和辅剂按100:8的质量比例配制好,混合均匀放入40℃水浴加热,每隔1min观察现象,记录其开始固化时间、完全成胶固化时间、开始液化时间及液化率。该配比下的智能转向剂5min后开始固化,11min后完全有液态状相变为固态状,50min时开始液化,在170min时液化率达到52.6%且在接下来的20min内液化率没有增长,在后续观察中发现该配比下的智能转向剂在55天左右完全液化。Prepare the prepared intelligent steering main agent and auxiliary agent according to the mass ratio of 100:8, mix them evenly and put them in a 40°C water bath to heat, observe the phenomenon every 1 minute, and record the starting time of curing, the time of complete gelation and curing, and the beginning of liquefaction time and liquefaction rate. The intelligent steering agent under this ratio starts to solidify after 5 minutes, completely changes from a liquid state to a solid state after 11 minutes, and begins to liquefy at 50 minutes. The liquefaction rate reaches 52.6% at 170 minutes and does not increase in the next 20 minutes. In the follow-up observation, it was found that the intelligent steering agent under this ratio was completely liquefied in about 55 days.

实施例4Example 4

首先取5g的乳酸于69.4g水溶液,然后分别向其中加入葡萄糖胺盐酸盐(15g)、N-甲基-D-葡糖胺盐酸盐(10g)、烷基芳基磺酸钠(0.4g)、异丙醇(0.2g)搅拌混合均匀,80℃氮气保护反应6小时,即配制成了智能转向剂主剂;取丙烯酰胺(70g)、N,N亚甲基双丙烯酸胺(20g)、三乙醇胺(10g)搅拌混合均匀,60℃反应5小时即配制成了辅剂。First take 5g of lactic acid in 69.4g of aqueous solution, then add glucosamine hydrochloride (15g), N-methyl-D-glucosamine hydrochloride (10g), sodium alkylarylsulfonate (0.4 g), isopropanol (0.2g) were stirred and mixed evenly, and reacted under nitrogen protection at 80°C for 6 hours, and the main agent of the intelligent steering agent was prepared; ), triethanolamine (10g) were stirred and mixed evenly, and reacted at 60° C. for 5 hours to prepare the auxiliary agent.

将配制好的智能转向主剂和辅剂按100:10的质量比例配制好,混合均匀放入40℃水浴加热,每隔1min观察现象,记录其开始固化时间、完全成胶固化时间、开始液化时间及液化率。该配比下的智能转向剂3min后开始固化,7min后完全有液态状相变为固态状,40min时开始液化,在160min时液化率达到54.2%且在接下来的20min内液化率没有增长,在后续观察中发现该配比下的智能转向剂在50天左右完全液化。Prepare the prepared intelligent steering main agent and auxiliary agent according to the mass ratio of 100:10, mix them evenly and put them in a 40°C water bath to heat, observe the phenomenon every 1 minute, and record the starting time of curing, the time of complete gelation and curing, and the beginning of liquefaction time and liquefaction rate. The intelligent steering agent under this ratio starts to solidify after 3 minutes, completely changes from a liquid state to a solid state after 7 minutes, and begins to liquefy at 40 minutes. The liquefaction rate reaches 54.2% at 160 minutes and does not increase in the next 20 minutes. In the follow-up observation, it was found that the intelligent steering agent under this ratio was completely liquefied in about 50 days.

表1 智能转向剂40℃下固化液化实验记录表Table 1 Record table of solidification and liquefaction experiment of intelligent steering agent at 40°C

Figure BDA0002406824360000031
Figure BDA0002406824360000031

Figure BDA0002406824360000041
Figure BDA0002406824360000041

表2 实施例1智能转向剂液化实验记录表Table 2 Example 1 intelligent steering agent liquefaction experiment record table

时间(min)time (min) 液化率(%)Liquefaction rate (%) 6060 2.42.4 9090 7.17.1 100100 9.59.5 110110 11.911.9 120120 14.314.3 130130 1919 140140 21.421.4 150150 23.823.8 160160 28.628.6 170170 3131 180180 33.333.3 190190 35.735.7 200200 38.138.1 210210 40.540.5 220220 42.942.9

表3 实施例2智能转向剂液化实验记录表Table 3 Example 2 intelligent steering agent liquefaction experiment record table

Figure BDA0002406824360000042
Figure BDA0002406824360000042

Figure BDA0002406824360000051
Figure BDA0002406824360000051

表4 实施例3智能转向剂液化实验记录表Table 4 Example 3 intelligent steering agent liquefaction experiment record table

时间(min)time (min) 液化率(%)Liquefaction rate (%) 5050 4.84.8 6060 9.79.7 7070 23.523.5 8080 33.733.7 9090 35.735.7 100100 3838 110110 40.140.1 120120 42.542.5 130130 45.845.8 140140 47.947.9 150150 50.250.2 160160 51.351.3 170170 52.652.6 180180 52.652.6 190190 52.652.6

表5 实施例4智能转向剂液化实验记录表Table 5 Example 4 intelligent steering agent liquefaction experiment record table

Figure BDA0002406824360000052
Figure BDA0002406824360000052

Figure BDA0002406824360000061
Figure BDA0002406824360000061

试验例Test case

选取试验例1~4的智能转向剂,采用直径为5mm的管线进行管线承压能力评价。实验温度:40℃,管线长度:30cm、75cm、150cm,先将管线加热到相应温度,以0.1ml/min的排量注入智能转向剂,使其在管线中固化,逐渐增加压力到某一值,固化的固体就会流出,此时的压力值就是智能转向剂的承压能力。Select the intelligent diverting agents of test examples 1 to 4, and use a pipeline with a diameter of 5mm to evaluate the pressure bearing capacity of the pipeline. Experimental temperature: 40°C, pipeline length: 30cm, 75cm, 150cm, first heat the pipeline to the corresponding temperature, inject the intelligent steering agent at a displacement of 0.1ml/min, make it solidify in the pipeline, and gradually increase the pressure to a certain value , the solidified solid will flow out, and the pressure value at this time is the pressure bearing capacity of the smart steering agent.

表6 智能转向剂承压能力记录表Table 6 Record table of pressure bearing capacity of intelligent steering agent

Figure BDA0002406824360000062
Figure BDA0002406824360000062

试验例Test case

选取试验例4的液化液来浸泡煤粉,使用全自动吸附气含量测试系统测试智能转向剂液化液的浸泡对煤的吸附解吸能力的影响,实验结果如图1所示。The liquefied liquid in Test Example 4 was selected to soak the pulverized coal, and the effect of soaking in the liquefied liquid of the intelligent steering agent on the adsorption and desorption capacity of coal was tested using the automatic adsorption gas content testing system. The experimental results are shown in Figure 1.

由表1可以发现,在相同温度条件下,随着智能转向剂主辅剂配比的增大,其开始固化时间、完全固化时间和开始液化时间在逐渐的缩短,说明该智能转向剂相变时间是可以通过调整配方主辅剂的比例来进行调整的;由表2~表5可知,4中配比下的智能转向剂在短时间内的液化率都在50%左右,其完全液化的时间均在50~60天,均可以完全液化,对地层无伤害;由表6可知,随着智能转向剂主辅剂配比的增大,其承压能力有着些微的增加,在1.5m的管线中4种配比的的智能转向剂均能承受12MPa左右的压力,封堵强度良好;从图1可知被智能转向剂液化液浸泡后,煤的吸附曲线和解吸曲线都稍微的向下移动,说明煤在被智能转向剂液化液浸泡后吸附量和解吸量稍微的减少,但其减少量极小,即智能转向剂液化液的浸泡几乎不会对煤粉的吸附解吸能力产生影响。It can be found from Table 1 that under the same temperature conditions, with the increase of the main and auxiliary agent ratio of the intelligent steering agent, the initial curing time, complete curing time and initial liquefaction time are gradually shortened, indicating that the phase transition of the intelligent steering agent The time can be adjusted by adjusting the ratio of main and auxiliary agents in the formula; from Table 2 to Table 5, it can be seen that the liquefaction rate of the smart steering agent with the ratio in 4 is about 50% in a short time, and its complete liquefaction The time is 50-60 days, and they can be completely liquefied without any damage to the formation. It can be seen from Table 6 that with the increase of the ratio of the main and auxiliary agents of the intelligent steering agent, its pressure-bearing capacity has a slight increase. The 4 kinds of intelligent steering agents in the pipeline can all withstand the pressure of about 12MPa, and the plugging strength is good; from Figure 1, it can be seen that after being soaked in the liquefaction liquid of the intelligent steering agent, the adsorption curve and desorption curve of coal move slightly downward , indicating that the amount of adsorption and desorption of coal after soaking in the liquefied liquid of the intelligent steering agent decreases slightly, but the reduction is very small, that is, the immersion of the intelligent steering agent in the liquefied liquid has almost no effect on the adsorption and desorption capacity of the pulverized coal.

综上所述,本发明提供的一种用于煤层气开采的智能转向剂,以葡萄糖胺盐酸盐,N-甲基-D-葡糖胺盐酸盐1,水溶性调节剂,表面活性剂,分散互溶剂,丙烯酰胺,n,n亚甲基双丙烯酸胺,促进剂等作为原材料配置而成。常温下呈液态状,一定温度和时间条件开始由液态状相变为固态状,可实现对煤储层的纵向平面堵塞以及横向体积堵塞,且具有较强的封堵强度,再在一定温度和时间条件下能由固态状完全相变为液态状,液化液不会对煤储层产生伤害,可顺利返排,且施工方便。In summary, a kind of intelligent diverting agent for coalbed methane exploitation provided by the present invention comprises glucosamine hydrochloride, N-methyl-D-glucosamine hydrochloride 1, water-soluble regulator, surface active Agents, dispersing mutual solvents, acrylamide, n,n methylene bisacrylamide, accelerators, etc. are configured as raw materials. It is in a liquid state at room temperature, and begins to change from a liquid state to a solid state at a certain temperature and time. Under the condition of time, it can completely change from a solid state to a liquid state. The liquefied liquid will not cause damage to the coal reservoir, can be flowed back smoothly, and is convenient for construction.

以上所描述的实例是本发明一部分实例,而不是全部的实例。本发明的实施的详细描述并非旨在限制要求保护的本发明范围,而是仅仅表示本发明的选定实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实例,都属于本发明保护范围。The examples described above are some examples of the present invention, not all examples. The detailed description of the implementation of the invention is not intended to limit the scope of the invention as claimed, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other examples obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Claims (5)

1.一种用于煤层气开采的智能转向剂,其特征在于,按重量百分比计,包括:葡萄糖胺盐酸盐5~15%,N-甲基-D-葡糖胺盐酸盐10~20%,水溶性调节剂1~20%,表面活性剂0.2~0.5%,分散互溶剂0.1~0.2%,丙烯酰胺5~20%,N,N亚甲基双丙烯酸胺1~10%,促进剂5~10%,水50~60%,所述表面活性剂为聚氧乙烯烷基苯酚醚、烷基芳基磺酸钠、十二烷基苯磺酸钠中的一种。1. An intelligent steering agent for coalbed methane exploitation, characterized in that, by weight percentage, it comprises: 5-15% of glucosamine hydrochloride, 10-15% of N-methyl-D-glucosamine hydrochloride 20%, water-soluble regulator 1-20%, surfactant 0.2-0.5%, dispersing mutual solvent 0.1-0.2%, acrylamide 5-20%, N,N methylenebisacrylamine 1-10%, promoting 5-10% of surfactant, 50-60% of water, and the surfactant is one of polyoxyethylene alkylphenol ether, sodium alkylarylsulfonate and sodium dodecylbenzenesulfonate. 2.根据权利要求1所述的一种用于煤层气开采的智能转向剂,其特征在于,所述水溶性调节剂为乳酸、乙酸、酒石酸、苹果酸、富马酸中的一种。2. A kind of intelligent steering agent for coalbed methane exploitation according to claim 1, characterized in that, the water-soluble regulator is one of lactic acid, acetic acid, tartaric acid, malic acid, and fumaric acid. 3.根据权利要求1所述的一种用于煤层气开采的智能转向剂,其特征在于,所述分散互溶剂为异丙醇、乙二醇单丁醚、油酸钠、己烯基双硬脂酰胺中的一种。3. a kind of intelligent steering agent for coalbed methane exploitation according to claim 1, is characterized in that, described dispersion mutual solvent is Virahol, ethylene glycol monobutyl ether, sodium oleate, hexenyl bis A kind of stearamide. 4.根据权利要求1所述的一种用于煤层气开采的智能转向剂,其特征在于,所述促进剂为三乙醇胺、甲醛、四甲基硫脲、肉桂醛、对氯代苯甲酸、香草醛中的一种。4. a kind of intelligent steering agent for coalbed methane exploitation according to claim 1, is characterized in that, described promotor is triethanolamine, formaldehyde, tetramethylthiourea, cinnamaldehyde, p-chlorobenzoic acid, One of the vanillin. 5.权利要求1-4中任一项所述的一种用于煤层气开采的智能转向剂的制备方法,其特征在于,包括以下步骤:首先取一定量的水,然后分别向其中加入葡萄糖胺盐酸盐、N-甲基-D-葡糖胺盐酸盐、水溶性调节剂、表面活性剂、分散互溶剂,然后搅拌均匀,配成智能转向剂主剂;丙烯酰胺、N,N亚甲基双丙烯酸胺和促进剂按一定比例混合配成智能转向剂辅剂。5. The preparation method of a kind of intelligent steering agent for coalbed methane exploitation described in any one of claims 1-4, it is characterized in that, comprises the following steps: first get a certain amount of water, then add glucose respectively wherein Amine hydrochloride, N-methyl-D-glucosamine hydrochloride, water-soluble regulator, surfactant, dispersing mutual solvent, and then stir evenly to make the main agent of intelligent steering agent; acrylamide, N,N Methylenebisacrylic acid amine and accelerator are mixed in a certain proportion to make intelligent steering agent auxiliary agent.
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