The application form of acidifier has developed from single acid to compound acids. But reasonable compound acidifier is insufficiency in theoretics to sustain, this is the weakness aspect in acidifier research. The evolution about these aspects have been summarized in this article.

酸化劑應(yīng)用形式也經(jīng)歷了由單一酸到復(fù)合酸的過(guò)程玖玖相交视频，但復(fù)合酸的合理配伍缺乏相應(yīng)的理論基礎(chǔ)在线无遮挡又爽又刺激的视频，目前關(guān)于各種酸化劑的互作關(guān)系以及酸化劑和其他添加劑間的互作效應(yīng)的研究正逐步展開午夜影院操久久久，必將為酸化劑的進(jìn)一步發(fā)展提供理論支持黄色视频黄久久。

Acidifier supplementation I could improve significantly average daily gain,feed conversion ratio,apparent digestibility. Acidifier supplementation II could reduce diarrhea rate. And the reason needed to be research further.

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Secondary pollution might be produced in the weak zone while conventional acidify because of halfway flowback under poor producing energy. Thief zones can obtain superfluous acidizing fluid because of the permeability contrast between layers of prominent interlamination antinomy, which can induce collapse in the thief zone and invalid acidification in the less permeable layers.

低壓油氣層常規(guī)酸化時(shí)由于地層能量低黄色网站最新网站免费，導(dǎo)致殘酸溶液無(wú)法徹底返排而引起地層的二次污染；層間矛盾突出的地層BB爱A片视频，由于滲透率差異久久福利无码一区二区三区，酸液將優(yōu)先進(jìn)入高滲地層，導(dǎo)致高滲透層進(jìn)酸量多精品三级av无码一区蜜芽，從而過(guò)度酸化引起坍塌偷拍一区1页，低滲透層則由于進(jìn)酸量少而達(dá)不到酸化的目的。

This article that focuses on the systematic and in-depth research in the current primal problem about abnormal burst pressure reservoir depress burst pressure has procured following main fruits:1 It forms the method which could obtain massive vertical static state mechanics parameters.2 In a foundation of acquisition of rock mechanics parameters,apply bent lamella that as mechanical model along with characteristic of actual geologic characteristics to analysis curvature for anticlinal strcture, get homologous tectonic stress value throug relation between the curvature and stress and different principal curvature in anticlinal structure,consequently set up laminational stress model for anticline reservoir. The block lamination for existed fracturing date has formed method of setting up mechanical model of lamination terrestrial stress by abtaining the block tectonic stress coefficients which are got by complex utilization test, laboratory test and fracturing date playback.3 Analysesing the main reason which lead to high burst pressure by considering the characteristic of reservoir geology,reservoir,and rock mechanics and reservoir damage,etc.Establishing burst pressure quantitative prediction model which provide gist for depressing construction risk and optimizing construction craft under the condition of open hole completion ,gun-perforated completion and damaged reservoir.4 Provding theoretical basis for interpreting acidification pretreatment which could depress busrt pressure by finding the relation between the influencing factors and rock machanics parameters and analysing the factors that have effect on rock mechanics parameters. Expounding the mechanism of reaction of mixed monomineral and acid from the angle of microcosmic element, evaluating quantitatively acid sensilility of different kinds of mineral effectively, and determing the first-order reaction dynamical equation of each mineral.5 Revealing rock mechanics property chage as a result of acid flooding in different condition by sandstone traumata experiment in different temperatures which combined with rock mechanics triaxial stress experiment.6 Associating damage mechanics with sandstone acidizing, established sandstone damage mechanics model in the foundation of the recognition on the rock mechanics parametric variation which is caused by acid-rock reaction in both macroscopic view and microscopic view ,also demonstrated those processes and quantitative estimated the acid busrt pressure to direct the site operation.

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For the acidified wastewater, calcium precipitation occurred mainly on the granular sludge surface; for the unacidified wastewater, accumulation occurred in the core of granular sludge, and for the unliquefied wastewater, precipitation evenly distributed within the granular sludge and on the surface.

已經(jīng)酸化的廢水，乙酸轉(zhuǎn)化為甲烷的場(chǎng)所主要在顆粒污泥的外表面欧美刺激性大交在线视频黑白；對(duì)于未酸化廢水欧美色天色噜夜夜，這種轉(zhuǎn)化發(fā)生在顆粒污泥的核心；難酸化的廢水禁18在线免费观看网站软件，污泥內(nèi)部存在著底物酸化的過(guò)程人人操人人爱人人摸人人看。

A new technique for selective plugging and acidizing oil wells is presented based on the principle of temporary plugging and acidizing in which selective plugging agent is first injected to block high permeable zones, then acid is injected to acidize low perlmeable and contaminated ones.

針對(duì)暫堵酸化技術(shù)存在的問(wèn)題，提出了一種油井選堵酸化的新技術(shù)欧美日韩网址在线看片免费播放，即在注酸前注入選堵劑封堵高滲透水層大乳女子自慰喷潮，然后注入酸液以酸化低滲透層和污阻部位。研制了符合最終堵水不堵油要求的選堵劑日韩制服丝袜无码网站视频，描述了這一新技術(shù)的機(jī)理日韩视频在线一区第四页。通過(guò)模擬試驗(yàn)，考察了新型選堵劑的選堵效果黄色A片区全部免费、封堵強(qiáng)度及酸化轉(zhuǎn)向率等国产区精品第一页。

In this article, high DS and low viscosity carboxymethyl starch was prepared in aqueous media through the reaction between corn starch with acid treatment and etherifying agent, the effect of acid treatment time, liquor/material ratio, the amount of sodium hydroxide, the amount of monochloroacetic acid, etherification time, and reaction tempera.

以玉米淀粉為原料，采用酸化-醚化復(fù)合變性的方法在水相中制備高取代度低黏度羧甲基淀粉免费a片小视频网站，探討了酸化時(shí)間美女又黄又湿又刺激又免费、液固比、NaOH用量日本最新黄色网站、ClCH2COOH用量人妻系列无码中文专区、醚化反應(yīng)時(shí)間、反應(yīng)溫度對(duì)羧甲基化過(guò)程的影響国产激情MV无码一级毛片，研究發(fā)現(xiàn)WWW.日本黄色，對(duì)原淀粉進(jìn)行酸化在那里可以看毛片，可以在不增加其它反應(yīng)試劑用量的基礎(chǔ)上提高產(chǎn)物的取代度，但是酸化時(shí)間不應(yīng)過(guò)長(zhǎng)中文字幕视频精品一区二区三区。

In this paper, firstly using natural fatty acids including lauric acid, myristic acid, palmitic acid etc. and disproportionated rosin as starting materials, the acyl reaction of starting materials with SOCl_2 respectively, and then using Schotten-Baumann condensation: on the reaction conditions of alkalescence, condensation of acylchloride with amino acid (sarcosine, glycine, alanine etc.), and then acidification, saltation. A series of anionic surfactants of N-acyl amino: sodium N-fatty acyl sarcosinate (SFS-12, SFS-14, SFS-16); sodiun N-fatty acyl glycinate(SFG-12, SFG-14, SFG-16); sodium N-fatty acyl alaninate(SFA-12, SFA-14, SFA-16)and sodium N-disproportionated rosinoyl aminatewere prepared. During the preparation of N-acylamino acid, the reaction conditions of acylchloride with amino acid condensation were identified by optimizing the synthetic conditions of N-lauroyl sarcosine: mol ratio of amino acid to acylchloride 2:1, reaction taken place in a solvent composed by acetone/water 2:1, acylchloride and 20% NaOH were slowly added to the reaction mixture at the same time while maintaining the pH at 9~10, after completion of adding maintaining reacting for 2.5h at 25℃.

首先以月桂酸国产做a视频在线不卡、肉豆蔻酸、棕櫚酸等天然脂肪酸和歧化松香為原料中文字幕黄色电影免费看，與氯化亞砜反應(yīng)制得酰氯日韩精品爆乳激情在线观看网站，然后采用Schotten-Baumann 縮合法路線，即在堿性條件下欧美成aⅴ人高清喷水，酰氯和氨基酸(肌氨酸能看黄色视频的网址、甘氨酸、丙氨酸等)縮合亚洲激情一区二区三区四区，經(jīng)過(guò)酸化久看在线视频、成鹽，合成一系列氨基酸型陰離子表面活性劑：脂肪酰肌氨酸鈉222www免费观看，即月桂酰肌氨酸鈉(SFS-12)一级毛片,A级毛片、肉豆蔻酰肌氨酸鈉(SFS-14)、棕櫚酰肌氨酸鈉(SFS-16)疯狂欧美黑粗硬大插进去了；脂肪酰甘氨酸鈉，即月桂酰甘氨酸鈉(SFG-12)激情另类小说、肉豆蔻酰甘氨酸鈉(SFG-14)一级黄色片美国、棕櫚酰甘氨酸鈉(SFG-16)；脂肪酰丙氨酸鈉最新热播无码视频。，即月桂酰丙氨酸鈉(SFA-12)免费黄色视频A片子、肉豆蔻酰丙氨酸鈉(SFA-14)、棕櫚酰丙氨酸鈉(SFA-16)国产初高中精品网；N-歧化松香跖访酪患禷bbb；被徕c(sodium N-disproportionated rosinoyl aminate)，即N-歧化松香趼吃谙呤悠担基肌氨酸鈉(sodium N-disproportionated rosinoyl sarcosinate 欧美性爱免费看视频，簡(jiǎn)稱SDRS)、N-歧化松香跎?；拾彼徕c(sodium N-disproportionated rosinoyl glycinate欧美三级电影网址，簡(jiǎn)稱SDRG)、N-歧化松香跹侵薏俅蟊谱酆贤基丙氨酸鈉(sodium N-disproportionated rosinoyl alaninate欧美视频性交，簡(jiǎn)稱SDRA)。

Introduce of actual acidification velocity(H~+ produced) for evaluating the acidifying effects of soil tested,only the stimulated acid rain with pH2.5 could lead to soil acidifying,however,acid rains with pH≥3.5 played a buffering role to soils tested,with the weakening of soil acidity.

引進(jìn)土壤的實(shí)際酸化速率H產(chǎn)生+值衡量供試土壤的酸化免费看黄色网站视频，只有pH2.5的模擬酸雨淋溶促進(jìn)了土壤的酸化国产精品资源站没想到这么骚，而pH≥3.5的模擬酸雨處理對(duì)土壤的酸化具有一定的緩沖作用一a黄色视频a，且土壤酸度減弱。

The classification of acidification indices about the tested the litchi orchard soil: the first class was soil intensity index of exchangeable aciditypH(KCl, exchangeable acidity, exchangeable aluminium, titratable acidity, actual acidification velocity , cation exchange capacity or electrical conductivity; the second class was soil exchangeable Ca2+, total base or base saturation percentage; The third class was soil intensity index of active aciditypH

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