This paper analyzes that the main reason of low injectivity of water injection wells is that the Sr 2+ in formation water reacts with the SO 4 2- in the Yellow River water to produce precipitate of BaSO 4 when the Yellow River water mixes with formation water.

該文分析了勝坨油田注水井吸水能力降低的主要原因是黃河水與地層污水混注時(shí)国产激情自拍视频在线观看，地層水中的Sr2＋欧美精品视频网站、Ba2＋與黃河水中的SO2－4反應(yīng)生成BaSO4外国在线视频播放免费网站、SrSO4沉淀真人一放A片免费视频。

Aimed at current situation of our country oil-gas field exploitation, and based on the damage mechanism knowledgement and research of reservoir permeability in the course of produced water reinjection, and its effects for the injectivity of water-injection well, The paper makes the theory and experiment study for the injectivity damage of the water-injection well caused by suspended solid particals in reinjection water and water-oil mobility discrepancy.

本文針對(duì)我國水驅(qū)油田開發(fā)現(xiàn)狀，在深入認(rèn)識(shí)和研究產(chǎn)出水回注對(duì)地層滲透能力損害機(jī)理及其對(duì)注水井注入能力影響的基礎(chǔ)上亚洲刺激第一页，對(duì)由回注水中固相懸浮顆粒及水油流度差異造成的注水井注入能力損害進(jìn)行了理論和實(shí)驗(yàn)研究国产A片观看WWWs。

As a whole,the notable characteristic of primary productivity in size-fractioned structure was that nanoplankton occupied comparatively significant advantage in Beibu Gulf.Nanoplankton has the largest contribution to gross primary productivity,and picoplankton was the secondary contributor,while microplankton the least.The contribution of microplankton for primary productivity in the north Gulf was more than that in the other waters.Nanoplankton and picoplankton contribute more to the gross primary productivity in offshore deep waters than in inshore shallow waters3.The Beibu Gulf can be divided into three ecoregions:Region-Ⅰis the ecoregion in inshore shallow waters of the north Gulf.In average,the water depth is 18m,DIN is 1.88μmol/L,DIP is 0.20μmol/L,N:P is 9.4:1,dissolved silicate is 5.17μmol/L,the Chl a conentration in surface layer is 2.27mg·m~(-3),the assimilation index in surface layer is 3.80mg/,the primary productivity is 198.78mgC/(m~2·d), and potential fishery production is estimated to be 0.24gC/(m~2·a) according to the primary productivity.The ecoregion is mainly affected by the northern coastal water systems,and may be fit for aquaculture;Region-Ⅱis the ecoregion in offshore deep waters of the north Gulf and the coastal shallow waters to the west Hainan Island.In average,the water depth is 35m,DIN is 2.01μmol/L,DIP is 0.18μmol/L,N:P is 11.2:1,disovled silicate is 4.23μmol/L,the chlorophyll a of surface layer concentration is 1.45mg·m~(-3),the assimilation index of surface layer is 4.12 mg/,the primary productivity is 276.60mgC/(m~2·d),and the estimated potential fishery production is 0.34gC/(m~2·a) according to the primary productivity. The ecoregion was mainly influenced by ocean current from the South China Sea, rivers in the west coast of Hainan Island and the water from Qiongzhou Strait.It may be fit for aquaculture and fishery;Region-Ⅲis the ecoregion in offshore deep waters of the mid and south Gulf.In average,the water depth is 75m,DIN is 0.77μmol/L, DIP is 0.15μmol/L,N:P is 5.1:1,disovled silicate is 3.05μmol/L,the chlorophyll a of surface layer concentration is 0.70mg·m~(-3),the assimilation index of surface layer averaged is 3.69mg/,the primary productivity is 350.89mgC/(m~2·d),and the estimated potential fishery production is 0.43gC/(m~2·a) according to the primary productivity.The ecoregion was mainly affected by the circulation inside Beibu Gulf, and may be fit for fishery.

初級(jí)生產(chǎn)力的粒級(jí)結(jié)構(gòu)的一個(gè)顯著特點(diǎn)是總體上微型浮游生物在全調(diào)查海區(qū)均占較明顯優(yōu)勢(shì)，對(duì)總初級(jí)生產(chǎn)力的平均貢獻(xiàn)最大色成综合；微微型浮游生物對(duì)初級(jí)生產(chǎn)力的平均貢獻(xiàn)次之羞羞的漫画网页；小型浮游生物對(duì)總初級(jí)生產(chǎn)力的平均貢獻(xiàn)最小AAA黄色视频免费观看；灣北部小型浮游生物對(duì)初級(jí)生產(chǎn)力的平均貢獻(xiàn)高于灣中部和灣南部影音先锋在线观看日韩AV，而灣中部和灣南部微型和微微型浮游生物對(duì)初級(jí)生產(chǎn)力的平均貢獻(xiàn)高于灣北部，遠(yuǎn)岸深水區(qū)高于近岸淺水區(qū)亚洲の无码热の综合。3人人操操BB、北部灣可以分為三個(gè)生態(tài)區(qū)：灣北部近岸淺水區(qū)，該區(qū)的環(huán)境主要特點(diǎn)是平均水深19m日韩在线AⅤ，DIN濃度平均值為1.88μmol/L，DIP濃度平均值為0.20μmol/L精品色哟哟一区二区，N：P為9.4：120精品久久久久精品，硅酸鹽濃度平均值為5.17μmol/L操操操操操操操网，表層葉綠素a平均值高達(dá)2.27 mg·m~(-3)，表層同化指數(shù)平均為3.80 mg/天堂在线WWW中文无码射，初級(jí)生產(chǎn)力平均值198.78mgC/(m~2·d)精品女同一区二区三区在线，根據(jù)初級(jí)生產(chǎn)力計(jì)算潛在漁業(yè)資源碳生產(chǎn)量平均為0.24 gC/(m~2·a)，該區(qū)主要受灣北部沿岸水系影響啪啪黄色视频免费看，適合作為水產(chǎn)養(yǎng)殖區(qū)久久精品国内久精国品；灣北部深水區(qū)和海南島西部沿岸淺水區(qū)，該區(qū)的環(huán)境主要特點(diǎn)是平均水深35m人人干人人摸人人插，DIN濃度平均值為2.01μmol/L欧美最新刺激网址，DIP濃度平均值為0.18μmol/L，N：P為11.2：1免费黄色视频网址在线观看，硅酸鹽濃度平均值為4.23μmol/L性色欧片一级毛片Av，表層葉綠素a平均值1.45 mg·m~(-3)，表層同化指數(shù)平均為4.12mg/国产有色又黄又爽的免费视频，初級(jí)生產(chǎn)力平均值276.60 mgC/(m~2·d)看片欧美，根據(jù)初級(jí)生產(chǎn)力計(jì)算潛在漁業(yè)資源碳生產(chǎn)量平均為0.34 gC/(m~2·a)，該區(qū)主要受南部灣口區(qū)海流向?yàn)硟?nèi)延伸欧美日韩黄色视频，沿岸海南島河流注入灣內(nèi)和瓊州海峽過道水的影響黄啪啪啪，適合作為漁業(yè)作業(yè)區(qū)和水產(chǎn)養(yǎng)殖區(qū)；灣中部和南部遠(yuǎn)岸深水區(qū)色色色,免费视频，該區(qū)的環(huán)境主要特點(diǎn)是平均水深75mwww.gdmedicare.com，DIN濃度平均值為0.77μmol/L，DIP濃度平均值為0.15μmol/L免佛一级蓂个片，N：P為5.1：198资源站人妻，硅酸鹽濃度平均值為3.05μmol/L，表層葉綠素a平均值0.70 mg·m~(-3)色色视频黄，表層同化指數(shù)平均為3.69 mg/欧美三级视频播放在线观看网址，初級(jí)生產(chǎn)力平均值350.89 mgC/(m~2·d)，根據(jù)初級(jí)生產(chǎn)力計(jì)算潛在漁業(yè)資源碳生產(chǎn)量平均為0.43 gC/(m~2·a)一级做a爰片久久毛片A片999，該區(qū)主要受北部灣環(huán)流影響欧美1819sex性处BBW，適合作為漁業(yè)作業(yè)區(qū)。

Selective water shut off action of water shutoff agent, effect of permeability on injection pressure, movability of water shutoff agent are researched, and multi-block design of water shutoff agent, particles diameter selection of water shutoff agent are performed.

對(duì)堵劑的選擇性堵水作用国产a一级毛片爽爽影院无码小说、滲透率對(duì)注入壓力的影響操操操欧美、堵劑的耐沖刷性和可動(dòng)性進(jìn)行了室內(nèi)實(shí)驗(yàn)，制定了堵劑施工段塞設(shè)計(jì)以及堵劑粒徑的選擇方案在线午夜日韩视频网站观看免费下载。

The effects of NaAA content on the mechanical properties and water-swellable properties were studied. The experimental results show that NaAA has good reinforcement for the EVM vulcanizate. EVM vulcanziate reinforced by NaAA has higher water absorbing rate and equilibrium water absorbing ratio. When the NaAA content is 50 phr, the maximum water-absorbing ratio of EVM vulcanziate is 278.3%. With the incorporation of ion into immersing media, the water-absorption ratio of EVM vulcanizates decreases. FT-IR analysis confirms that NaAA formed in the process of compounding and underwent polymerization during vulcanization.

結(jié)果表明色播网址，NaAA對(duì)EVM硫化膠具有明顯的增強(qiáng)效果；NaAA原位改性的EVM硫化膠具有較好的吸水膨脹性能，NaAA用量為50phr時(shí)99久久99久久国产精品，最高吸水率為278.3%免费播放毛片网址；浸泡介質(zhì)中離子的引入使EVM硫化膠的吸水率下降；FT-IR分析表明日韩午夜在线高清成人影片视频播放，在混煉過程中生成了NaAA最新黄色网站又大又粗，在硫化過程中NaAA發(fā)生聚合反應(yīng)。

Gross of natural resources of water of catchment of the Yangtse River 996 billion stere, 35% what take the throughout the country, at present development utilization rate has 18% only, divide outside propping up this catchment to use water, still pass in carrying out south project of water north attune is northwardly provide fresh water resource, its moist limits involves 26 provinces city, shortage of gross of this pair of water, and distributing very not all China has fundamental strategic value.

長(zhǎng)江流域水資源總量9960億立方米欧美在线www，占全國的35%一级性爱视频免费看，目前開發(fā)利用率只有18%，除支撐本流域用水外日本88黄网站，還通過實(shí)施中的南水北調(diào)工程向北方提供淡水資源在线观看91香蕉国产免费，其潤澤范圍涉及26個(gè)省市，這對(duì)水總量短缺久久人妻系列无码专区、且分布極為不均的中國具有重要的戰(zhàn)略價(jià)值无码肉片国产在线观看免费。

Based on water-entry dynamic and water-entry ballistic theories,the oblique water-entry process of disk ogive is simplified and a wetted correction factor is introduced in order to accord with the true water pile phenomena,and an oblique water-entry impact model coupled with ballistic and dynamic models are established.

以沖擊體入水動(dòng)力學(xué)和入水彈道學(xué)理論為基礎(chǔ)，針對(duì)平頭尖拱體入水沖擊這個(gè)復(fù)雜物理現(xiàn)象18禁午夜无码精品网站，引入體現(xiàn)液面隆起現(xiàn)象的沾濕因子玖玖在线视频精品，用等效液面代替自由水平液面，建立了斜入水高速?zèng)_擊的運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)沖擊模型欧美A片视频在线，其中動(dòng)力學(xué)模型是根據(jù)平頭尖拱體沾濕面的具體幾何形狀而建立欧美黄片性爱视频。

Based on water-entry dynamic and water-entry ballistic theories, the oblique water-entry process of disk ogive is simplified and a wetted correction factor is introduced in order to accord with the true water pile phenomena, and an oblique water-entry impact model coupled with ballistic and dynamic models are established. According to the exact geometric shape of the wetted body surface, the dynamic model is established.

以沖擊體入水動(dòng)力學(xué)和入水彈道學(xué)理論為基礎(chǔ)，針對(duì)平頭尖拱體入水沖擊這個(gè)復(fù)雜物理現(xiàn)象国产av黄，引入體現(xiàn)液面隆起現(xiàn)象的沾濕因子中国小帅全裸在线观看，用等效液面代替自由水平液面，建立了斜入水高速?zèng)_擊的運(yùn)動(dòng)學(xué)和動(dòng)力學(xué)沖擊模型野外性XXⅩXX大少妇，其中動(dòng)力學(xué)模型是根據(jù)平頭尖拱體沾濕面的具體幾何形狀而建立国产AV无码片毛片一级久小说。

So we should try to improve the usage rate of water by saving water,control the overdevelop of underground water,make full use of ground water,fa-ther and reuse waste and polluted water.

黨中央、國務(wù)院十分重視水資源問題在线视频日本。最近江澤民總書記在中央人口資源環(huán)境工作座談會(huì)上強(qiáng)調(diào)：水是基礎(chǔ)性的自然資源和戰(zhàn)略性的經(jīng)濟(jì)資源欧美丝袜肉穴操逼视频。水資源

Structural matter drops to hit water with fixed rate phut from certain height, inchoate and main the structure that attacks water process in the light of phut is answered begin research, and press mutation of field of force and Xing Bo to wait to study however to entering the underwater after water less, and add with each passing day as large bridge and marine project much, the construction in these projects and the phenomenon that phut of large construction content also appeared to hit water in use process, like Guangdong 9 rivers big bridge is bumped to break down after collapsing, large area bridge floor falls into surface to wait, the meeting such as mutation of field of pressure of the underwater after this kind of phut hits water and Xing Bo is right all round structural products gives birth to certain influence, evaluate this kind of influence to have real project sense to construction and design.

結(jié)構(gòu)物從一定高度落下以一定速度砰擊水面，早期主要針對(duì)砰擊入水過程的結(jié)構(gòu)響應(yīng)開展探究91人妻互换论坛九色，而對(duì)入水后水下壓力場(chǎng)突變和興波等卻探究較少无码日韩第23页视频，而隨著大型橋梁和海洋工程日漸增多，在這些工程的施工和使用過程中也出現(xiàn)了大型結(jié)構(gòu)物砰擊入水的現(xiàn)象天天舔天天色，如廣東九江大橋被撞垮塌后大面積橋面落入水面等欧美A级性爱，這種砰擊入水后水下壓力場(chǎng)突變和興波等會(huì)對(duì)四周結(jié)構(gòu)物產(chǎn)生一定影響，評(píng)價(jià)這種影響對(duì)施工和設(shè)計(jì)具有現(xiàn)實(shí)的工程意義看黄色视频网址。