天津化學泥漿的作用與管理現場-公司新聞-河南譽德環?？萍加邢薰?/title> <meta name="keywords" content=""> <meta name="description" content=""> <link href="/css/Home/newsinfo.css" rel="stylesheet" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body style="min-height: 660px; cursor: auto;" class="edit"> <div style="position:fixed;left:-9000px;top:-9000px;"><font id="3jjfx"></font><mark id="3jjfx"></mark><thead id="3jjfx"><meter id="3jjfx"><th id="3jjfx"><nobr id="3jjfx"></nobr></th></meter></thead><address id="3jjfx"></address><listing id="3jjfx"><meter id="3jjfx"><noframes id="3jjfx"><th id="3jjfx"></th></noframes></meter></listing><big id="3jjfx"></big><font id="3jjfx"></font><strike id="3jjfx"></strike><p id="3jjfx"><dl id="3jjfx"></dl></p><ins id="3jjfx"></ins><font id="3jjfx"></font><pre id="3jjfx"></pre><strike id="3jjfx"></strike><form id="3jjfx"><th id="3jjfx"><ruby id="3jjfx"><rp id="3jjfx"></rp></ruby></th></form><sub 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style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px">鉆井液在煤田地質勘探和其他行業起到的作用和各方面對鉆井液的嚴格要求，促進鉆井液技術取得了迅速的發展。經過多年的科研開發和生產實踐，鉆井液已從僅滿足鉆頭鉆進發展到適應各方面需求的鉆井液體系。例如：為快速鉆進服務的低粘度、低摩擦、低固相的聚合物鉆井液。防卡鉆井液、針對巖石特點的防塌鉆井液、鉆鹽巖層的飽和鹽水鉆井液等，形成較為完整的鉆井液體系。如今優質的鉆井液已不是一兩種材料（例如膨潤土、燒堿）配制的，保持鉆井液的性能要依靠加入各種處理劑。天津化學泥漿的作用與管理現場</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px">優質的化學泥漿能提高鉆頭壽命、減少提鉆次數、縮短鉆井周期、降低鉆井成本、提高鉆井效率，還具有制備容易、成本低、用量少的優點。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"><span style="font-family:宋體">一、</span> <span style="font-family:宋體">泥漿的功能</span> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> <span style="font-family:宋體">泥漿又叫做鉆井液或沖洗液，被比喻為鉆井的血液。泥漿停止循環，鉆井工作就不能正常進行。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 1、沖洗孔底：泥漿可在鉆頭水眼處形成高速的液流，噴向井底。這高速噴出的泥漿可將由泥漿壓力與地層壓力差而被壓持在井底的巖屑沖起，起沖洗孔底的作用。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 2、攜帶巖屑：當泥漿在環空的上返速度大于巖屑沉降速度時，泥漿可將巖屑帶出，即在一定的上返速度下，泥漿有攜帶巖屑的作用。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 3、平衡地層壓力：泥漿的液柱壓力必須與地層壓力相平衡才能達到防止井噴或者泥漿大量漏進地層的目的?？赏ㄟ^調整泥漿的密度控制泥漿的液柱壓力，使它與地層壓力相平衡，起到防涌堵漏的作用。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 4、冷卻潤滑鉆頭：泥漿可將鉆井過程中鉆具（鉆頭與鉆柱）與地層摩擦產生的熱量帶至地面，起冷卻作用。同時，泥漿能有效地降低鉆具與地層的摩擦，起潤滑作用。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 5、穩定井壁：可在泥漿中加入適量的處理劑，使泥漿具有抑制頁巖膨脹或分散的能力，同時產生薄而韌的濾餅，起到穩定井壁的作用。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 6、懸浮巖屑和密度調整材料：當停止循環時，泥漿處于停止狀態，其中的膨潤土顆?？苫ハ嗦摻Y，形成結構，將巖屑懸浮起來。若泥漿中加有密度調整材料（如重晶石），則在停止循環時，泥漿也可將它懸浮起來。泥漿懸浮巖粉和密度調整材料的能力可使泥漿停止循環后易于啟動。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 7、獲取地層信息：通過泥漿帶出的巖屑，可以獲取地層許多信息。如地層物性、油、氣顯示等。天津化學泥漿的作用與管理現場</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 8、傳遞功率：泥漿可將泥漿泵的功率經鉆柱從鉆頭水眼高速噴射傳到井底，提高鉆頭的破巖能力，加快鉆進速度。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"><span style="font-family:宋體">二、泥漿的主要技術參數：</span> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 1、粘度：指流動時內部各層間摩擦阻力大小的反映特性。常用漏斗粘度計和六速旋轉粘度計測定。A、漏斗粘度計：在標準漏斗中加入700ml流體，讓其漏出500ml所用的時間即為漏斗粘度，單位秒，水為15秒。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> 2、濾失量和泥餅厚度：?濾失量：泥漿中的自由水在壓差作用下會向具有孔隙的地層滲透，造成失水，也叫做失水量的大小，形容泥漿的好壞?，F場常用的氣壓式失水儀，壓力7kg/cm2</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"><span style="font-family:宋體">，溫度為常溫，</span>30分鐘失水13-18ml為正常。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> <span style="font-family:宋體">泥漿失水量大，失水濾液對孔壁、巖層有滲透、溶蝕等作用，易引起孔壁的縮徑膨脹、滑落、坍塌等事故。因此一般失水量要求控制在</span>10-25ml/30分鐘，超過此值，應更換泥漿。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px">?泥餅厚度：泥漿中的粘土顆粒在失水過程中積累起來的濾餅、泥餅薄而致密，對鉆井有利；泥餅厚而疏松會引起泥包鉆頭等井下事故。一般要求泥餅厚度小于1mm </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:宋體;font-size:16px">3、比重：泥漿重量與同體積水重量之比。測量一般使用杠桿比重秤，正常低固相泥漿比重在103-105之間，不同地層配制的泥漿比重也不一樣。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:Calibri;font-size:16px"> </span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0"><span style=";font-family:Calibri;font-size:16px"> 4<span style="font-family:宋體">、含砂量：</span><span style="font-family:Calibri">200</span><span style="font-family:宋體">目篩孔的砂子重量與泥漿體積的百分數。</span></span></p><p><span style=";font-family:Calibri;font-size:14px"> </span></p><p><br/></p> </div> </div> </div></div> <div class="fenye3_all allever" id="mould49468" data-pid="49468" data-type="30" data-name="分頁"> <h4> <span>上一篇：</span> <a href="/newsinfo/7071/19980"> 【專業知識】橋梁基礎施工方法匯總 </a> </h4> <h4> <span>下一篇：</span> <a href="/newsinfo/7071/16360"> 鐵漿軍化學泥漿的作用與管理 </a> </h4> </div></div> </div> <footer class="footer9 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