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Question
What is main difference between direct circulation drilling and reverse circulation drilling?
Answer In straight circulation drilling and reverse circulation drilling, major difference in drilling system is related to direction of movement of drilling fluid. In direct circulation drilling, drilling fluid is circulated from drill stem and then flows up the annulus between outside of drill stem and borehole wall. Drilling fluid that carries drill cuttings flows to surface and subsequent settlement pits. Pumps are working to lift cuttings free fluid back to drill stem.
comparision of b.m & s.f
what are The regulations and specification that followed for compaction works for earth dam in Oman.
A rectangular channel, 20ft wide is shown. The channel consists of three reaches of different slopes. The channel has a roughness coefficient of n=0.015 and carries a discharge of
what is this process?whats its procedure?need some case studies
Example for Beam Flexure Design Select the lightest W section for the simply supported beam shown below. The beam length is 12ft. The nominal loading is: w d = 4.0 kip/ft (i
Q. What do you mean by M A S Accounts? This stands for material at site account. This is a suspense head of account that is maintained to watch actual consumption of materials
what is fly levelling? when it is carried out ?
Compatibility Condition: Total strain in steel = Total strain in copper i.e. 3 × 10 -4 + 1.965 × 10 -5 P s = 4.5 × 10 -4 + 1.8421 × 10 -5 P c Recognising that P
Define the Spalling - underwater inspection of bridge? A spall is a roughly circular or oval depression in the concrete. Corroding reinforcement can cause spalls and reinforcin
finite elements
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