Gas drilling fluid is often used in UBD in low pressure formation.
在低压储层进行欠平衡钻井时常选用气体型低密度流体。
The capability of a drilling fluid shale shaker depends on its basic parameters selecting.
钻井振动筛能否实现良好的性能，取决于基本参数的选择。
To pump the drilling fluid until a sample from the bottom of the hole reaches the surface.
泵送流体直到岩样从井底到达地表为止。
A new type of drilling fluid rheometer is developed on the basis of fann-35a rheometer used in the oil-fields.
本仪器是在钻井现场使用的fann氏流变仪的基础上设计的一种新型通用流变仪。
During cementing operations, the major issue to be addressed is the displacement of drilling fluid by cement slurry.
固井作业中，首要解决的是注水泥顶替泥浆的问题。
It introduces the compositions and maintaining measures of the drilling fluid system, and evaluates the properties in this paper.
文中介绍了该体系的配方及维护处理措施，并对其性能进行了评价。
Forecasting and predicting for engineering accidents is one of the main tasks that are required to be solved for drilling fluid logging.
工程事故预测、预报是录井技术解决现场问题的主要任务之一。
The filtrate loss controller for drilling fluid is prepared by one step method using alkaline paper making black liquor as main raw material.
以碱法造纸黑液为主要原料，经过一步合成工艺制备钻井泥浆降滤失剂。
Analysis of mineral composition, physical and chemical properties on instable formation rock in an important work in the study of drilling fluid.
地层矿物组分、理化性能分析是整个泥浆工作中一项极为重要的基础工作。
As the main material of changing drilling fluid to cement slurry, blast furnace water quenched slag has attracted much attention and got initial success.
高炉水淬矿渣作为泥浆转化为水泥浆技术中的主体材料，已引起广泛重视并获得初步成功。
UBD is a drilling technique that reduces the hydrostatic pressure of the drilling fluid, causing the pressure in the wellbore to be less than the formation pressure.
UBD是一项钻井技术，此技术可以减少钻井泥浆带来的液体压力，引起的井身的压力远小于架构产生的压力。
The low density drilling fluid has borehole excavation effect on compensated neutron porosity logging, and by this way apparent porosity is lower than the true value.
低密度井眼流体会对补偿中子孔隙度测井产生井眼挖掘效应，使视孔隙度值低于真孔隙度，且井眼流体密度越小，井眼尺寸越大，地层孔隙度越大，井眼挖掘效应越明显。
By using the technique of aerating Nitrogen gas in the low density base drilling fluid, excellent exploration results have been successfully obtained in Well Fengshen-1.
通过在低密度基液中利用充氮技术，丰深1井成功地进行了勘探施工，取得了良好的勘探效果。
The simulation test and field use show that, the new separator has good performance in separating gas from drilling fluid, it can meet the demand of underbalanced drilling.
经模拟试验和现场应用情况表明，研制的液气分离器脱气效果良好，能满足欠平衡钻井需要。
Research on Starch glycerine ether: the synthesis methods of Starch glycerine ether have been studied, and tentatively tested its performance as oil drilling fluid loss additive.
本文研究了以淀粉为原料合成的两种改性淀粉——淀粉甘油醚和阳离子淀粉的合成以及阳离子淀粉的应用性能。
It can couple with two plugs simultaneously, and makes the drilling fluid fill into casing in turn and quickly. This can simplify the cementing operation, prevent cement pollution.
可同时装两个胶塞，既可用于常规双塞固井，又可用于连续式双级注水泥作业。
In late April a big company, Chesapeake Energy, suspended its fracking in Pennsylvania after one of its natural-gas Wells blew out and spilled toxic drilling fluid into a nearby creek.
4月下旬，切萨皮克能源公司在宾州的一个天然气井外溢，致使有毒的液体流入附近小河，该公司的破裂法采气被叫停。
The application in the wellsite shows that the new drilling fluid system effectively solves the problems of bore-hole stability and satisfies for the drilling operation of Tanggu 5 well.
经现场应用表明，该体系舱有效地解决堂古5井四开井段盐膏层易溶解、易垮塌造成的井壁不稳定问题，满足了堂古5井的钻井施工要求。
The paper introduces a new process called "chemico -heating wash- oil deposition -centrifugation" method to recover oil from waste oil-based drilling fluid, and the recovery rate is over 84%.
通过大量的实验室和现场试验研究，使用“ 化学热洗-析油-离心”处理工艺，油回收率达到84%以上；
Engineers had spent days pumping heavy drilling fluid into the leaking well head on the ocean floor in a high-pressure bid to smother the gushing crude and ultimately seal the well with cement.
工程师们数日来一直向海底的泄漏油井泵入大量的钻探泥浆，希望用高压堵住喷涌的原油，最后用水泥封死油井。
The pollution status quo and pollution character of discarded fluids are identified, the potential harms are discussed and measures of prevention and control of drilling fluid are put forward.
并对废弃泥浆进行了进一步的分析，探讨其潜在的危害，提出钻井泥浆防治措施。
This paper focuses on the study of its operation procedures, tools used, and drilling fluid technology, etc. The laboratory testing, study achievements, and field applications are also described.
文中重点论述了延迟固井技术在工艺、工具、水泥浆等方面的研究情况，并介绍了室内试验、研究成果和现场应用情况。
Refering to the theories and methods on drilling fluid mechanic parameter design, This paper focuses on study on the pressure of bottom-hole; and then analyzes and studies different fluids media.
本文着重低压井进行井底压力研究，参考前人欠平衡钻井流体力学参数设计理论、方法，对不同的流体介质进行了分析和研究。
The main contents of this thesis are the research of simultaneous casing & coring method by pneumatic Down-the-Hole (DTH) hammer drilling and the innovation of a novel vegetable-gum drilling fluid.
本文是以中国水电顾问集团成都勘测设计研究院负责“架空层钻进取心技术研究”项目为依托，研究的主要内容是空气潜孔锤跟管取心钻进技术和新型植物胶冲洗液的开发研究。
Swab effect is reduced with the RHELIANT PLUS drilling fluid system, resulting in the ability to pull out of hole (POOH) faster, especially in deeper or ERD sections where time savings are amplified.
该体系对激动压力的影响较小，因此能够缩短起下钻时间，尤其在深井或大位移井中，能够更加显著地节省时间。
Potter Drilling of California uses jets of superheated fluid to break through granite five times faster than traditional techniques, which don't do well against hard rock types.
加利福尼亚的Potter Drilling5次使用过热液体穿透花岗岩，花费时间比传统工业快很多，不过这种工艺在试用硬质岩石时表现不佳。
Potter Drilling of California uses jets of superheated fluid to break through granite five times faster than traditional techniques, which don't do well against hard rock types.
加利福尼亚的Potter Drilling5次使用过热液体穿透花岗岩，花费时间比传统工业快很多，不过这种工艺在试用硬质岩石时表现不佳。
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