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, 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(), 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.

31. The mechanisms and characteristics for the polyglycol - based drilling fluid have been reviewed.

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

33. The transmission velocity increases with the pulse frequency increasing and there is a stable transmission frequency for drilling fluid system.

34. Film-forming resin FGA, a saturated carbon-chain non-ionic polymer, can be used as anti-sloughing a-gent in drilling fluid.

35. The high cost of transportation and treatment make a strong push for foreign drilling companies and drilling fluid companies to study and develop new techniques for local treatment of oily cuttings.

36. The operating personnel can observe filter loss of drilling fluid.

37. This drilling fluid meets the requirements of aerated drilling technology.

38. Test results show that by adding suitable amount of polyglycol and temporary plugging agent in the foam drilling fluid, the permeability recovery increases from 66.

39. Wettability reversal agent is an important additive for oil base drilling fluid.

40. The research and application of water soluble polymer drilling fluid additive in China are reviewed.

41. Aerated mud is a kind of drilling fluid with gas, liquid and solid triphase matter distributed evenly and stably.

42. The degasification mechanism of a vacuum drilling fluid degasser, the matching of the vacuum pump with sewage pump and the selection of various parameters are discussed.

43. The reclaiming of waste drilling fluid embodies in the reclaiming of heavy loader, which is because the cost of heavy loader is 50% of the total cost of drilling fluid.

44. To comply with the special request of protecting the formation and environment against damage on oil-gas field development offshore, a new drilling fluid system—methyl glucoside(MEG)was developed.

45. This paper introduces the application of polyol drilling fluid in Hongtai area of Tuba oilfield.

46. In this paper, the characteristic and functional mechanism of the surfactant was studied, and property of alkyl indicant drilling fluid was evaluated also.

47. The property, lubricity, compatibility with drilling fluid, anti-pollution ability of HRH-101 are evaluated by experiment in lab and selected the amount of optimum addition.

48. 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.

49. However, it is to be noted that proper selection of bit type and drilling fluid properties are required for taking full advantages of this technology.

50. A multifunctional additive ARJ for drilling fluid was synthesized by emulsion polymerization.

51. Meanwhile , the paper proposes that using oil - base drilling fluid can prevent the reservoir damage.

52. The rheologic model of three - phase foam drilling fluid can be optimized with grey correlation analysis method.

53. The transmission velocity decreases and the stable transmission frequency of pulse increases with the hydraulic friction coefficient of the drilling fluid increasing.

54. Results showed that the hydrate forming is effectively suppressed when a few hydrate inhibitor HBH ( about 0. 5%) was added into the drilling fluid.

55. The drilling fluid used in petroleum and geology exploration was monopolized by anion - type mud system.

56. In order to prevent drill fluid splash during drilling tool connection, condensed air is injected into standpipe to drive drilling fluid down.

57. The drilling fluid pulse transmitting up and down along well bore had refraction and reflection components similar to damped oscillation at the boundary of system.

58. The heteropoly glucoside biological drilling fluid is a new drilling fluid.

59. Field using shows that optimized drilling fluid system " polyol - positive colloid polymer drilling. "

60. This paper also discusses the engineering of the new drilling fluid.

61. The developing trend for the polymer drilling fluid additive is also proposed.

62. Solid control system for drilling fluid is one of main petroleum drilling equipments.

63. DMZ low density solid free drilling fluid is mainly comprised of water , molecular polymer molecular compound.