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- low density drilling medium 低密度钻井介质
- Circulating micro-foam drilling fluid is a newly developed low density drilling fluid system in recent years. 可循环微泡沫钻井液是近年国内外推出的一种新型低密度钻井液体系。
- Keywords Low density drilling fluids;Drilling fluid additives;Hollow glass spheres(HGS);Light weight agents; 低密度钻井液;钻井液添加剂;中空玻璃微珠(HGS);减轻剂;
- Keywords underbalanced drilling;horizontal well;low density drilling fluid;rotary geosteering;casing valve;PDC bit;multilateral well;EM-MWD;water-in-oil drilling fluid; 欠平衡;水平井;钻井液;套管阀;PDC钻头;分支井;电磁波随钻地质导向;
- The second body also has an extremely low density. 第二身体也有极低的密度。
- Second statement: Aluminum has low density. 第二句,铝的密度低。
- It is introduced that the low density brines and high density organic-salt drilling fluids is applied in Karamay,Tarim and Huabei Oilfields in China. 介绍了低密度基液和高密度基液的有机盐钻井液在克拉玛依、塔里木、华北等油田的应用典型实例。
- DMZ low density solid free drilling fluid is mainly comprised of water, high molecular polymer and natural high molecular compound. 无固相聚合物钻井液是一种抑制性、防塌性能力强的钻井液体系。
- Air has a low density and great compressibility.The volumetric flow rate of air in air drilling varies with pressure and temperature,which in turn,change with wll depth. 气体不仅密度低,而且具有很大的可压缩性,所以空气钻井的体积流量将随压力和温度变化,而压力和温度又随井深变化。
- Most galaxy associations are small and have a low density contrast. 大多数星系协是小的,密度反衬低。
- Research advances of low density lipoprotein as medicine carrier. 低密度脂蛋白作为药物载体的研究进展。
- Direct Measurement of Low Density Lipoprotein Cholesterol. 直接法测定低密度脂蛋白胆固醇。
- Myelolipoma (two cases) was rich in adipose tissue, low density. 髓质脂肪瘤2例,富含脂肪组织,故密度低。
- Thisseries of bit is suitable for drilling medium hard to hard formations with high compressive strength and medium abrasiveness. 适合在中硬至硬的高抗压强、中等研磨性的地层中使用。
- Dual Gradient Drilling (DGD) is also known as Dual Density Drilling, which is a new type of drilling technology for deepwater drilling. 双梯度钻井又称为双密度钻井,是一种适用于深水钻井的新型钻井技术。
- The low density of the material means that the inertia of the cage is small. 低密度的材料意味着保持架的惯性很小。
- Oxidized low density lipoprotein:the prime culprit for atherosclerotic lesions? 氧化型低密度脂蛋白:动脉壁氧化损伤的元凶?
- This accounts for ice having a lower density than water. 这就是冰的密度比水小的原因。
- The astrocytes were first purified as discribed previously, and the cells were replanted at low density and maintained for a long peroid in a chemical difinitative medium with little serum added. 常规分离纯化星形胶质细胞,将其低密度种植,维持 在添加低量血清的化学成分限定的培养基中培养,并在长时期内不给予更换或补加培养液。
- Several new approaches to the deepwater dual gradient drilling were developed,including subsea mudlift drilling,riserless drilling,and dual density drilling. 深水双梯度钻井技术主要包括海底泵举升钻井液、无隔水管钻井、双密度钻井等,可以很好地解决深海钻井中的技术难题。