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1. Drilling fluid viscosity has greatly affected gas detection logging.

2. Kill the well with drilling fluid.

3. Drilling fluid HTHP behavior differs for different fluid systems.

4. To use drilling fluid resistivity curve can also check out borehole seal quality, water sealing up effect and borehole water table, figure out some hydrogeological problems.

5. Solid control on drilling fluid is an essential technique for under - balanced drilling.

6. Meanwhile, the mechanism of MMH drilling fluid protecting fractured reservoir is analysed.

7. The properties of filtrate reducer used in MMH drilling fluid are evaluated.

8. Preparation, control and maintenance for emulsified drilling fluid will directly affect the and gas.

9. During the underbalanced drilling, once the drilling fluid density is determined, the difficult work left will be how to control the wellhead back pressure at the proper value at the proper time.

10. During the drilling of the horizontal section, oil-based drilling fluid and PDC bit are usually used for holding the horizontal hole stability and enhancing rate of penetration.

11. An electronic hygrometer for measuring drilling fluid activity is developed.

12. Especially, since the compound ion polymer drilling fluid has been used, the obvious techno-economic benefit has been obtained.

13. MTC cementing fluid is made up of drilling fluid, blast furnace slag and additives.

14. The density of a drilling fluid is a key parameter to keep the borehole stable.

15. The loss of drilling fluid to a formation, usually caused when the hydrostatic head pressure of the column of drilling fluid exceeds the formation pressure.

16. This paper presents the working principle, structure[sentencedict.com], characteristics of viscometer at a high shear rate of drilling fluid.

17. By using computer technology , open computer ES for drilling fluid design was built.

18. The effects of membrane efficiency become obviously at low water activity of drilling fluid.

19. 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.

20. Zhongyuan oilfield conducts a study on innoxious treatment of wasted drilling fluid to eliminate the contamination to soil and underground water source.

21. During drilling, the positive colloidal solution is adopted to adjust the drilling fluid density dynamically, to ensure drilling at near balance pressure.

22. Since SF-1 preflush has the abilities of thinning, visbreaking and reducing shear rate, compatibility of drilling fluid with cement slurry can be improved.

23. Gas drilling technology is a technology which uses the compressed gas as circulating medium to replace drilling fluid and has been promoted application in domestic oil fields.

24. Different formulas of curing agents were used to solidify waste drilling fluid.

25. Two reverse rotation self-synchronization motors are used in Model ZS6B drilling fluid linear shale shaker as vibrator, which makes the screen box produce linear vibration.

26. This paper introduces the viscosity-reducing ability of new viscosity-reducing agent LGV in drilling fluid and preliminarily inquires into the action mechanism of LGV.

27. A comprehensive indoor experiment and application at well-site were done for the compound ion polymer drilling fluid.

28. The parameters for gas logging and ROP are different greatly from the parameter in normal drilling due to the effect of the crushed rock volume(sentencedict.com), the drilling fluid and so on.

29. It can solve the problem that crude oil disturbs geologic logging and gas logging, and reduced the cost of drilling fluid, its economic and social...

30. A comprehensive indoor experiment and application at - site were done for the compound ion polymer drilling fluid.