Drilling fluid Essay Example | Topics and Well Written Essays - 250 words

Drilling fluid - Essay Example The drilling fluid clogs the pores reducing the rocks permeability. This results into formation damage that reduces or prevents production from the reservoir rock after the completion of the well. Lost circulation is another issue that is caused due to creation of highly porous and permeable formation in the subsurface. The drilling fluid gets into the formation without forming up a filter cake. The lost circulation problem is solved by pumping down the fibrous materials such as ground pecan hulls, mica flakes, sugar cane hulls or even shredded cellophane material into the well. They get into the pore spaces of the lost-circulation formation and swell up there closing off the formation and solving the problem. Blowout is caused due to unexpected pressure in the subsurface and fluid comes out of the subsurface rocks known as Kick. With the water or oil flowing into the well gets mixed up with the drilling mud and makes it lighter exerting less pressure on the bottom. The blowout preventers are used to close the hole and to stop the Kick. The drilling mud is constantly monitored for its weight, electrical resistivity, or temperature to know if fluid is being cut by subsurface

Develope a research plan for this topic = Risk factors for Proposal

Develope a plan for this topic = Risk factors for Helicobacter pylori Infections among residents in a Native American settlement - Research Proposal Example Assumptions, Limitations and Delimitations: As the rate of H. pylori seropositivity augments with age, 78% of the residents around 14 years displayed seropositivity. Total follow up of the entire population is not possible so the population is segmented and regular follow up will be maintained in the current research. Summary: Regular follow up is essential to demonstrate the exact age of acquiring H. pylori infection. Remarkable difference is observed in the seroprevalence of various ethnic communities, therefore population is segregated right from the beginning of the study. Reports established that the prevalence of infection is high in children so the study is conducted for the children below 20 years. Future Implications: The results procured from the study will be statistically examined and will be compared with the present findings. This is definitely going to be a step to alleviate iron deficiency anaemia and prevention of H. pylori infection at earlier age. Contribution to social change: The study will help in the prevention of H. pylori infection at the earlier age. It is an effort to locate the prevalence of H. pylori infection in a particular community, in a particular age, onset of infection and its correlation with the iron deficiency anaemia. Thus it is a contribution towards the social upliftment of the Alaska communities. Parkinson, A.J., Benjamin, D. G., Bulkow, L., Wainwright, R.B., Swaminathan, B., Khanna, B., Peterson, K.M., Fitzgerald, M. A. (2000). High prevalence of Helicobacter pylori in Alaska Native Population and Association with Low Serum Ferritin Levels in Young Adults. Clin Diagn Lab Immunol. 7(6),