Reverse and direct circulation drill drilling in piling, Civil Engineering

Assignment Help:

Q. Reverse and direct circulation drill drilling in piling?

For reverse circulation drilling and direct circulation drilling, major difference in drilling method is connected to the direction of movement of drilling fluid. For direct circulation drilling, drilling fluid is circulated from the drill stem and then flows up annulus between the outside of drill stem and borehole wall. Drilling fluid which carries the drill cuttings flows to the surface and subsequent settlement pits. Pumps are used to lift the cuttings free fluid back to the drill stem. 

For reverse circulation drilling, direction of flow of drilling flow is opposite to that of direct circulation drilling. Drilling fluid flows from the annulus amid the drill stem and hole wall to the drill stem. Drilling fluid is pumped to nearby sump pits where cuttings aredropped and settled.


Related Discussions:- Reverse and direct circulation drill drilling in piling

Highway Engineering, I am a Civil Engg student. Why CBR Values determined ...

I am a Civil Engg student. Why CBR Values determined only at 2.5 and 5 mm penetration ?.

Sub-surface drainage, Sub-surface Drainage: Sub-surface drainage is i...

Sub-surface Drainage: Sub-surface drainage is intended to take away the water seeping through the pervious layers of the soil, causing a high water table, or in cut slopes of

Surveying, describe two fundamentals purposes of surveying.

describe two fundamentals purposes of surveying.

Land Surveying, What is the difference between accuracy and precision.

What is the difference between accuracy and precision.

Explain the methods of underwater inspection, Explain the Methods of Underw...

Explain the Methods of Underwater Inspection? There are three common methods of carrying out underwater inspection of bridge elements. a)  Wading inspection b)  Scuba div

Segmentally lined and sprayed concrete linings tunnels, Q. Segmentally line...

Q. Segmentally lined and Sprayed Concrete Linings tunnels? The fundamental difference between segmentally lined tunnels and SCL tunnels is that the sprayed concrete in SCL tunn

Packing resources in joint of concrete pipes in pipe jacking, Question ...

Question What is key function of packing resources in joint of concrete pipes in pipe jacking ? Answer Packing resources are about 10 to 20mm broad and are usually mad

Specification of wood work for door, Q. Specification of Wood work for Door...

Q. Specification of Wood work for Door? 1. General - Timber for door, window and ventilators frames shall be as specified. Timber shall be sawn in the direction of the grains.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd