CN101397908A - 同时除掉岩心内油与盐的方法 - Google Patents
同时除掉岩心内油与盐的方法 Download PDFInfo
- Publication number
- CN101397908A CN101397908A CNA2008101723591A CN200810172359A CN101397908A CN 101397908 A CN101397908 A CN 101397908A CN A2008101723591 A CNA2008101723591 A CN A2008101723591A CN 200810172359 A CN200810172359 A CN 200810172359A CN 101397908 A CN101397908 A CN 101397908A
- Authority
- CN
- China
- Prior art keywords
- rock core
- salt
- methyl alcohol
- oil
- benzene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fats And Perfumes (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
本发明公开了一种同时除掉岩心内油与盐的方法。该方法包括下列步骤:采用甲醇与苯1∶1比例的溶剂,利用索氏抽体器进行除油除盐抽提,经60~72小时的抽提能够同时除掉岩心孔隙内的原油与盐。该方法降低了乙醇与甲醇的消耗,提高了工作效率;降低了甲醇溶液毒性,提高了安全性。
Description
技术领域:
本发明涉及油田勘探与开发测试领域及其它领域所用的同时除油除盐方法,尤其是一种同时除掉岩心内油与盐的方法。
背景技术:
在油田勘探与开发技术中,研究储层岩石物性等特征如岩石孔隙度、渗透率、饱和度等,需要除掉岩石孔隙内的原油与各种盐类。以往采用的方法(称该方法为分步除油除盐法)是先利用乙醇与苯1∶3溶液,通过索氏抽体器抽提60~72小时,除掉岩心内的原油,烘干后再装入溶剂为甲醇的索氏抽体器,抽提60~72小时,除掉岩心孔隙内的盐。采用该除油除盐方法的缺点:两次装取样品;抽提时间长,需要120~144小时;近似100%的甲醇溶剂,属于剧毒物质,极易挥发,对人有很大的伤害性。因此,对于高矿化度含油岩石除油除盐较费力,且工作效率低,易造成人身伤害。
发明内容:
为了克服背景技术中的不足,本发明提供一种同时除掉岩心内油与盐的方法,该方法降低了乙醇与甲醇的消耗,提高了工作效率;降低了甲醇溶液毒性,提高了安全性。
本发明所采用的技术方案是:该同时除掉岩心内油与盐的方法采用甲醇与苯1∶1比例的溶剂,利用索氏抽体器进行除油除盐抽提,经60~72小时的抽提能够同时除掉岩心孔隙内的原油与盐。
本发明具有如下有益效果:本方法属于利用液体与液体间、液体与固体间相互混溶性质将某物体内的不同物质(液体和/或固体)通过索氏抽体器(或其它浸泡、抽提装置)被溶液从物体孔隙内同时除掉的方法。本方法改变原来的除油除盐所用试剂及试剂比例,采用甲醇与苯1∶1比例的溶剂,利用索氏抽体器进行除油除盐抽提,经60~72小时的抽提能够同时除掉岩心孔隙内的原油与盐(称该方法为一步除油除盐法)。采用一步除油除盐法进行除油除盐节省了洗盐时间,降低了乙醇与甲醇的消耗,提高了工作效率。同时,由于一步除油除盐法采用50%的甲醇溶液做试剂,降低了甲醇溶液毒性,提高了安全性。
具体实施方式:
下面结合实验对本发明作进一步说明:为验证一步除油除盐法的有效性与可行性,进行了方法实验:选择一批高矿化度含油样品690块,样品质量一般为15~30g,样品含水一般为0.2~1.4mL(样品含水多少与岩性、含油性、样品大小等因素有关),分成甲已两组,每组345块,分别采用上述两种方法分批进行除油除盐。分步法除油除盐的实验为:先用乙醇-苯1:3溶液除油,再用甲醇-苯1:1溶液除油与除盐,然后再用甲醇100%溶剂除盐;与前文提到的分步除油除盐区别在于增加了甲醇-苯1∶1溶液除油除盐实验,目的是检验甲醇-苯1∶1溶液除盐效果。上述三种除油除盐方法分别经60~72小时的抽提,进行烘干称重(其部分样品见表1),对比三种实验质量,乙醇-苯(1∶3溶液)除油后的质量明显大于后两者,与甲醇-苯(1∶1溶液)除盐后最大质量差为0.132g,平均为0.08g。而经甲醇-苯除岩后再用甲醇除盐,其二者质量差很小,最大为0.019g,平均为0.006g,说明甲醇-苯(1∶1溶液)已经起到很好的除盐作用。
一步法除油除盐的乙组采用甲醇与苯1∶1比例的溶剂利用索氏抽体器抽提60~72小时,进行烘干称重(其部分样品见表2),质量为M1。然后将该样品再采用上述分步法除油除盐,除油后的质量为M2,除盐后的质量为M3,对比M1、M2、M3近似相等,差值小于0.02G,三者有大有小。说明采用一步法除油除盐是有效的、可行的。能够达到岩心同时除油除盐的目的。两种方法的比较:一步除油除盐法,节省了洗盐以及中间烘干、称量等所用时间,降低了劳动强度与材料的消耗,工作效率提高一倍以上,同时,降低了甲醇溶液浓度,提高了安全性。
表1 塔1井高含盐岩心乙醇-苯-甲醇(分步法)除油除盐洗实验数据表
样号 | 乙醇-苯洗后质量m1(g) | 时间(小时) | 苯-甲醇洗后质量m2(g) | 时间(小时) | 甲醇洗后质量m3(g) | 时间(小时) | m1-m2(g) | m2-m3(g) |
364 | 20.944 | 70 | 20.895 | 70 | 20.896 | 70 | 0.049 | -0.001 |
313 | 20.448 | 60 | 20.369 | 60 | 20.359 | 60 | 0.079 | 0.01 |
76 | 25.024 | 68 | 24.99 | 68 | 24.985 | 68 | 0.034 | 0.005 |
286 | 24.608 | 72 | 24.541 | 72 | 24.54 | 72 | 0.067 | 0.001 |
348 | 18.68 | 65 | 18.602 | 65 | 18.597 | 65 | 0.078 | 0.005 |
314 | 20.058 | 70 | 19.965 | 70 | 19.96 | 70 | 0.093 | 0.005 |
237 | 22.966 | 60 | 22.902 | 60 | 22.89 | 60 | 0.064 | 0.012 |
322 | 22.123 | 68 | 22.048 | 68 | 22.035 | 68 | 0.075 | 0.013 |
349 | 22.46 | 72 | 22.349 | 72 | 22.346 | 72 | 0.111 | 0.003 |
288 | 23.672 | 65 | 23.567 | 65 | 23.553 | 65 | 0.105 | 0.014 |
250 | 28.887 | 70 | 28.755 | 70 | 28.75 | 70 | 0.132 | 0.005 |
260 | 22.38 | 60 | 22.287 | 60 | 22.275 | 60 | 0.093 | 0.012 |
295 | 26.015 | 68 | 25.947 | 68 | 25.935 | 68 | 0.068 | 0.012 |
319 | 21.132 | 72 | 21.047 | 72 | 21.046 | 72 | 0.085 | 0.001 |
247 | 23.39 | 65 | 23.308 | 65 | 23.295 | 65 | 0.082 | 0.013 |
365 | 19.604 | 70 | 19.528 | 70 | 19.519 | 70 | 0.076 | 0.009 |
308 | 24.876 | 60 | 24.778 | 60 | 24.779 | 60 | 0.098 | -0.001 |
367 | 25.74 | 68 | 25.644 | 68 | 25.637 | 68 | 0.096 | 0.007 |
361 | 27.675 | 72 | 27.568 | 72 | 27.552 | 72 | 0.107 | 0.016 |
264 | 27.038 | 65 | 26.93 | 65 | 26.92 | 65 | 0.108 | 0.01 |
269 | 25.1 | 70 | 25.004 | 70 | 24.984 | 70 | 0.096 | 0.02 |
307 | 27.026 | 60 | 26.918 | 60 | 26.913 | 60 | 0.108 | 0.005 |
305 | 22.16 | 68 | 22.062 | 68 | 22.055 | 68 | 0.098 | 0.007 |
312 | 21.244 | 72 | 21.179 | 72 | 21.159 | 72 | 0.065 | 0.02 |
330 | 23.601 | 65 | 23.528 | 65 | 23.521 | 65 | 0.073 | 0.007 |
257 | 23.492 | 70 | 23.388 | 70 | 23.369 | 70 | 0.104 | 0.019 |
267 | 24.8 | 60 | 24.672 | 60 | 24.672 | 60 | 0.128 | 0 |
328 | 16.251 | 68 | 16.205 | 68 | 16.193 | 68 | 0.046 | 0.012 |
339 | 22.276 | 72 | 22.213 | 72 | 22.22 | 72 | 0.063 | -0.007 |
252 | 25.157 | 65 | 25.052 | 65 | 25.046 | 65 | 0.105 | 0.006 |
300 | 21.734 | 70 | 21.671 | 70 | 21.664 | 70 | 0.063 | 0.007 |
239 | 25.59 | 60 | 25.501 | 60 | 25.49 | 60 | 0.089 | 0.011 |
270 | 24.47 | 68 | 24.392 | 68 | 24.384 | 68 | 0.078 | 0.008 |
318 | 20.101 | 72 | 20.037 | 72 | 20.031 | 72 | 0.064 | 0.006 |
304 | 24.05 | 65 | 23.99 | 65 | 23.99 | 65 | 0.06 | 0 |
336 | 25.493 | 70 | 25.389 | 70 | 25.383 | 70 | 0.104 | 0.006 |
324 | 20.829 | 60 | 20.77 | 60 | 20.759 | 60 | 0.059 | 0.011 |
290 | 22.304 | 68 | 22.227 | 68 | 22.219 | 68 | 0.077 | 0.008 |
315 | 21.042 | 72 | 20.96 | 72 | 20.948 | 72 | 0.082 | 0.012 |
242 | 24.966 | 65 | 24.882 | 65 | 24.871 | 65 | 0.084 | 0.011 |
350 | 24.611 | 70 | 24.523 | 70 | 24.53 | 70 | 0.088 | -0.007 |
366 | 19.856 | 60 | 19.794 | 60 | 19.793 | 60 | 0.062 | 0.001 |
362 | 20.84 | 68 | 20.766 | 68 | 20.771 | 68 | 0.074 | -0.005 |
340 | 25.131 | 72 | 25.038 | 72 | 25.031 | 72 | 0.093 | 0.007 |
325 | 22.286 | 65 | 22.237 | 65 | 22.231 | 65 | 0.049 | 0.006 |
254 | 26.24 | 70 | 26.143 | 70 | 26.122 | 70 | 0.097 | 0.021 |
331 | 25.352 | 60 | 25.28 | 60 | 25.267 | 60 | 0.072 | 0.013 |
326 | 25.222 | 68 | 25.175 | 68 | 25.167 | 68 | 0.047 | 0.008 |
351 | 22.418 | 72 | 22.337 | 72 | 22.33 | 72 | 0.081 | 0.007 |
323 | 20.871 | 65 | 20.815 | 65 | 20.808 | 65 | 0.056 | 0.007 |
280 | 27.45 | 70 | 27.378 | 70 | 27.383 | 70 | 0.072 | -0.005 |
302 | 27.053 | 60 | 26.977 | 60 | 26.976 | 60 | 0.076 | 0.001 |
259 | 23.293 | 68 | 23.214 | 68 | 23.221 | 68 | 0.079 | -0.007 |
344 | 24.48 | 72 | 24.412 | 72 | 24.402 | 72 | 0.068 | 0.01 |
表2 塔1井高含盐岩心甲醇-苯(一步法)除油除盐洗实验数据表
样品编号 | 甲醇-苯M1 | 时间(小时) | 乙醇-苯M2 | 时间(小时) | 甲醇M3 | 时间(小时) | 差值M1-M2 | 差值M1-M3 |
446 | 30.072 | 65 | 30.069 | 65 | 30.075 | 65 | 0.003 | -0.003 |
447 | 25.133 | 60 | 25.135 | 60 | 25.128 | 60 | -0.002 | 0.005 |
448 | 26.611 | 72 | 26.622 | 72 | 26.61 | 72 | -0.011 | 0.001 |
449 | 27.556 | 70 | 27.547 | 70 | 27.549 | 70 | 0.009 | 0.007 |
450 | 24.784 | 68 | 24.769 | 68 | 24.795 | 68 | 0.015 | -0.011 |
451 | 31.232 | 65 | 31.237 | 65 | 31.219 | 65 | -0.005 | 0.013 |
452 | 29.728 | 60 | 29.718 | 60 | 29.731 | 60 | 0.01 | -0.003 |
453 | 24.776 | 72 | 24.768 | 72 | 24.77 | 72 | 0.008 | 0.006 |
454 | 32.309 | 70 | 32.303 | 70 | 32.301 | 70 | 0.006 | 0.008 |
455 | 31.104 | 68 | 31.097 | 68 | 31.087 | 68 | 0.007 | 0.017 |
456 | 26.421 | 65 | 26.419 | 65 | 26.411 | 65 | 0.002 | 0.010 |
457 | 28.962 | 60 | 28.955 | 60 | 28.951 | 60 | 0.007 | 0.011 |
458 | 27.873 | 72 | 27.859 | 72 | 27.878 | 72 | 0.014 | -0.005 |
459 | 33.76 | 70 | 33.747 | 70 | 33.757 | 70 | 0.013 | 0.003 |
460 | 29.894 | 68 | 29.874 | 68 | 29.877 | 68 | 0.020 | 0.017 |
461 | 30.122 | 65 | 30.119 | 65 | 30.114 | 65 | 0.003 | 0.008 |
462 | 31.865 | 60 | 31.861 | 60 | 31.86 | 60 | 0.004 | 0.005 |
463 | 26.83 | 72 | 26.821 | 72 | 26.818 | 72 | 0.009 | 0.012 |
464 | 27.077 | 70 | 27.064 | 70 | 27.078 | 70 | 0.013 | -0.001 |
465 | 26.425 | 68 | 26.406 | 68 | 26.414 | 68 | 0.019 | 0.011 |
466 | 28.389 | 65 | 28.4 | 65 | 28.383 | 65 | -0.011 | 0.006 |
467 | 31.076 | 60 | 31.073 | 60 | 31.063 | 60 | 0.003 | 0.013 |
468 | 29.432 | 72 | 29.415 | 72 | 29.433 | 72 | 0.017 | -0.001 |
469 | 29.176 | 70 | 29.17 | 70 | 29.169 | 70 | 0.006 | 0.007 |
470 | 24.175 | 68 | 24.166 | 68 | 24.167 | 68 | 0.009 | 0.008 |
471 | 27.691 | 65 | 27.689 | 65 | 27.687 | 65 | 0.002 | 0.004 |
472 | 30.211 | 60 | 30.192 | 60 | 30.207 | 60 | 0.019 | 0.004 |
473 | 28.128 | 72 | 28.134 | 72 | 28.125 | 72 | -0.006 | 0.003 |
474 | 29.728 | 70 | 29.732 | 70 | 29.734 | 70 | -0.004 | -0.006 |
475 | 30.552 | 68 | 30.539 | 68 | 30.547 | 68 | 0.013 | 0.005 |
476 | 27.996 | 65 | 27.987 | 65 | 27.996 | 65 | 0.009 | 0.000 |
477 | 27.802 | 60 | 27.794 | 60 | 27.805 | 60 | 0.008 | -0.003 |
478 | 28.783 | 72 | 28.786 | 72 | 28.788 | 72 | -0.003 | -0.005 |
479 | 30.962 | 70 | 30.978 | 70 | 30.958 | 70 | -0.016 | 0.004 |
480 | 26.807 | 68 | 26.812 | 68 | 26.813 | 68 | -0.005 | -0.006 |
481 | 25.548 | 65 | 25.543 | 65 | 25.532 | 65 | 0.005 | 0.016 |
482 | 30.95 | 60 | 30.962 | 60 | 30.945 | 60 | -0.012 | 0.005 |
483 | 26.404 | 72 | 26.389 | 72 | 26.403 | 72 | 0.015 | 0.001 |
484 | 23.454 | 70 | 23.438 | 70 | 23.443 | 70 | 0.016 | 0.011 |
485 | 25.75 | 68 | 25.741 | 68 | 25.741 | 68 | 0.009 | 0.009 |
486 | 29.068 | 65 | 29.066 | 65 | 29.056 | 65 | 0.002 | 0.012 |
487 | 26.286 | 60 | 26.271 | 60 | 26.292 | 60 | 0.015 | -0.006 |
488 | 23.666 | 72 | 23.662 | 72 | 23.66 | 72 | 0.004 | 0.006 |
489 | 29.531 | 70 | 29.516 | 70 | 29.528 | 70 | 0.015 | 0.003 |
490 | 27.511 | 68 | 27.497 | 68 | 27.509 | 68 | 0.014 | 0.002 |
515 | 28.452 | 65 | 28.437 | 65 | 28.439 | 65 | 0.015 | 0.013 |
516 | 25.72 | 60 | 25.714 | 60 | 25.73 | 60 | 0.006 | -0.01 |
517 | 26.119 | 72 | 26.119 | 72 | 26.116 | 72 | 0.000 | 0.003 |
518 | 28.311 | 70 | 28.302 | 70 | 28.299 | 70 | 0.009 | 0.012 |
519 | 25.502 | 68 | 25.496 | 68 | 25.489 | 68 | 0.006 | 0.013 |
520 | 26.693 | 65 | 26.682 | 65 | 26.677 | 65 | 0.011 | 0.016 |
521 | 28.349 | 60 | 28.339 | 60 | 28.344 | 60 | 0.01 | 0.005 |
522 | 25.769 | 72 | 25.767 | 72 | 25.773 | 72 | 0.002 | -0.004 |
523 | 25.28 | 70 | 25.264 | 70 | 25.287 | 70 | 0.016 | -0.007 |
524 | 28.456 | 68 | 28.449 | 68 | 28.442 | 68 | 0.007 | 0.014 |
525 | 27.46 | 65 | 27.446 | 65 | 27.457 | 65 | 0.014 | 0.003 |
526 | 25.314 | 60 | 25.295 | 60 | 25.309 | 60 | 0.019 | 0.005 |
527 | 25.515 | 72 | 25.504 | 72 | 25.517 | 72 | 0.011 | -0.002 |
528 | 28.677 | 70 | 28.661 | 70 | 28.669 | 70 | 0.016 | 0.008 |
529 | 24.864 | 68 | 24.846 | 68 | 24.855 | 68 | 0.018 | 0.009 |
530 | 26.919 | 65 | 26.906 | 65 | 26.924 | 65 | 0.013 | -0.005 |
531 | 27.623 | 60 | 27.609 | 60 | 27.62 | 60 | 0.014 | 0.003 |
532 | 25.12 | 72 | 25.108 | 72 | 25.111 | 72 | 0.012 | 0.009 |
533 | 26.009 | 70 | 26.007 | 70 | 25.991 | 70 | 0.002 | 0.018 |
534 | 24.581 | 68 | 24.58 | 68 | 24.588 | 68 | 0.001 | -0.007 |
535 | 23.25 | 65 | 23.248 | 65 | 23.238 | 65 | 0.002 | 0.012 |
536 | 22.076 | 60 | 22.08 | 60 | 22.076 | 60 | -0.004 | 0.000 |
537 | 22.262 | 72 | 22.257 | 72 | 22.254 | 72 | 0.005 | 0.008 |
538 | 26.863 | 70 | 26.863 | 70 | 26.854 | 70 | 0.000 | 0.009 |
苯与甲醇和乙醇都能形成无限混容的混合液,只是形成共沸物的比例和沸点不同。苯与乙醇只能形成3∶1的共沸物,与甲醇形成的共沸物是1∶1。因此这个比例是由于两种物质的化学性质决定的,由于苯与甲醇形成的共沸物沸点高于乙醇和苯的沸点,易于冷凝,同时甲醇的用量较单用甲醇减少一半,减少了单一溶剂蒸汽的挥发,从而降低了对大气污染的毒性。
由于苯-甲醇是混合液,具有苯与甲醇的双重性质,利用该混合液中的苯除掉岩心内的原油,利用甲醇除掉岩心内的盐类,因此能够同时清除岩心中的油与盐。
由于乙醇不具备溶解盐类的能力,而甲醇具有溶解盐类的性能,采用1∶3乙醇-苯只能达到清洗岩心内油的目的。因此,以往对含盐量高的岩心用3∶1苯-乙醇先进行岩心洗油,再用甲醇洗盐。由于盐类极易溶解于甲醇中,用苯-甲醇混合液洗油的同时可除掉岩心孔隙内结晶的盐类,因此可以省略第二步了,达到了省时、省原料的目的。
Claims (1)
1、一种同时除掉岩心内油与盐的方法,该方法包括下列步骤:采用甲醇与苯1∶1比例的溶剂,利用索氏抽体器进行除油除盐抽提,经60~72小时的抽提能够同时除掉岩心孔隙内的原油与盐。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008101723591A CN101397908B (zh) | 2008-11-03 | 2008-11-03 | 同时除掉岩心内油与盐的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008101723591A CN101397908B (zh) | 2008-11-03 | 2008-11-03 | 同时除掉岩心内油与盐的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101397908A true CN101397908A (zh) | 2009-04-01 |
CN101397908B CN101397908B (zh) | 2012-02-29 |
Family
ID=40516718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2008101723591A Active CN101397908B (zh) | 2008-11-03 | 2008-11-03 | 同时除掉岩心内油与盐的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101397908B (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103411817A (zh) * | 2013-07-13 | 2013-11-27 | 西南石油大学 | 一种致密岩心可溶盐的清洗方法 |
CN107290204A (zh) * | 2017-05-22 | 2017-10-24 | 中国地质大学(北京) | 一种油基泥浆污染岩屑的洗油方法 |
CN115917117A (zh) * | 2020-01-30 | 2023-04-04 | 巴西石油公司 | 纳米流体用于去除来自石油系统的岩石样品中的石油和盐的用途 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4281712A (en) * | 1980-06-13 | 1981-08-04 | Standard Oil Company (Indiana) | Minimizing clay and shale damage in a log-inject-log procedure |
US4771634A (en) * | 1987-04-06 | 1988-09-20 | Shell Oil Company | Solvent disperser for removing oil from sponge core |
CN2574039Y (zh) * | 2002-09-30 | 2003-09-17 | 刘宝和 | 高效岩心洗油仪 |
CN1281581C (zh) * | 2004-05-09 | 2006-10-25 | 大庆油田有限责任公司 | 一种多烷基苯磺酸盐、其复合物、多烷基苯磺酸盐表面活性剂及其应用 |
-
2008
- 2008-11-03 CN CN2008101723591A patent/CN101397908B/zh active Active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103411817A (zh) * | 2013-07-13 | 2013-11-27 | 西南石油大学 | 一种致密岩心可溶盐的清洗方法 |
CN103411817B (zh) * | 2013-07-13 | 2015-05-13 | 西南石油大学 | 一种致密岩心可溶盐的清洗方法 |
CN107290204A (zh) * | 2017-05-22 | 2017-10-24 | 中国地质大学(北京) | 一种油基泥浆污染岩屑的洗油方法 |
CN107290204B (zh) * | 2017-05-22 | 2019-12-31 | 中国地质大学(北京) | 一种油基泥浆污染岩屑的洗油方法 |
CN115917117A (zh) * | 2020-01-30 | 2023-04-04 | 巴西石油公司 | 纳米流体用于去除来自石油系统的岩石样品中的石油和盐的用途 |
Also Published As
Publication number | Publication date |
---|---|
CN101397908B (zh) | 2012-02-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Schellekens et al. | Molecular features of humic acids and fulvic acids from contrasting environments | |
Liu et al. | Quantification and characterization of dissolved organic carbon from biochars | |
Senesi et al. | The chemistry of soil organic matter | |
CN110590730B (zh) | 一种利用三元低共熔溶剂提取紫苏叶花青素的方法 | |
Yap et al. | Evaluation of solubility of polycyclic aromatic hydrocarbons in ethyl lactate/water versus ethanol/water mixtures for contaminated soil remediation applications | |
Chowdhury et al. | Adsorption of crystal violet from aqueous solution by citric acid modified rice straw: equilibrium, kinetics, and thermodynamics | |
CN101397908B (zh) | 同时除掉岩心内油与盐的方法 | |
Kumar et al. | Removal of Cr (VI) from synthetic solutions using water caltrop shell as a low-cost biosorbent | |
Choi et al. | Chemical characterization of dissolved organic matter in moist acidic tussock tundra soil using ultra-high resolution 15T FT-ICR mass spectrometry | |
Wang et al. | Application of sol–gel based octyl-functionalized mesoporous materials coated fiber for solid-phase microextraction | |
CN106423062A (zh) | 一种用于去除水中六价铬离子的橘皮基吸附剂制备方法 | |
Liang et al. | Removal of hexavalent chromium by different modified spruce bark adsorbents | |
CN108273843B (zh) | 用于含油钻屑及含油钻井废弃物的浸取剂及其使用方法 | |
Davies et al. | Ecohydrological controls on apparent rates of peat carbon accumulation in a boreal bog record from the Hudson Bay Lowlands, northern Ontario, Canada | |
Haider et al. | Silylation of soil organic matter extraction of humic compounds and soil-bound residues | |
Zhang et al. | Chemical characterization of fractions of dissolved humic substances from a marginal sea—a case from the Southern Yellow Sea | |
Huang et al. | Importance of the structure and nanoporosity of organic matter on the desorption kinetics of benzo [a] pyrene in sediments | |
Calace et al. | The structural composition of humic compounds as indicator of organic carbon sources | |
Avel et al. | Preparation of testate amoebae samples affects water table depth reconstructions in peatland palaeoecological studies | |
Mahugo Santana et al. | An environmentally friendly method for the extraction and determination of priority phenols in soils using microwave-assisted micellar extraction | |
Stutter et al. | Temperature and soil moisture effects on dissolved organic matter release from a moorland Podzol O horizon under field and controlled laboratory conditions | |
CN103725033A (zh) | 一种提取浒苔色素的方法 | |
Beyer et al. | Humus composition and transformations in a pergelic cryohemist of coastal antarctica | |
Bakr et al. | ESR assessment of kerogen maturation and its relation with petroleum genesis | |
Aparicio et al. | Musk fragrances |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right |
Effective date of registration: 20200927 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: PetroChina Co.,Ltd. Patentee after: Daqing Oilfield Co.,Ltd. Address before: 163453 No. 99 Zhongyuan Road, Daqing, Heilongjiang Patentee before: Daqing Oilfield Co.,Ltd. |
|
TR01 | Transfer of patent right |