K.O BELLO

Due to the general increase in the usage of petroleum resources, drilling of oil wells are frequently done in very challenging and hostile settings. Loss of circulation has been one of the main challenge facing engineers during drilling operations. Hence there have been extensive researches done over the years in order to minimize the impact of loss circulation, however, this have led to a myriad of viewpoints as to what product and method is suitable to battle it. However, a lot of the products and guidelines available for battling lost circulation are often biased towards self-promotion for a particular service company. The purpose of this study is to develop practical guidelines that are universal and not biased towards any particular service company product and which will also serve as a reference guide for lost circulation prevention and control at the well-site for drilling personnel

Efficient cuttings transport and hole cleaning is very important for obtaining an effective drilling operation. In inclined and horizontal drilling, hole cleaning issues is a common and complex problem. This project explains the impact of various drilling parameters and how they affect the required flow velocity and flow rate required for effective cuttings transport, cuttings transport is controlled by many variables such as well inclination angle, hole and drill-pipe diameter, rotation speed of drill pipe (RPM), drill-pipe eccentricity, rate of penetration (ROP), cuttings characteristics like cuttings size and porosity of bed and drilling fluids characteristics like flow rate, fluid velocity, flow regime, mud type and non - Newtonian mud rheology.
The following existing models were used which includes Larsen, Rubiandini, Moore, Hopkin, zeidler model, analysis was made on them based on the same parameters and prediction was obtained from the analysis, parameters used included ROP, mud weight, cutting size and mud rheology
The analysis shows that the larsens model gave the best slip velocity for lifting cuttings and effective hole cleaning.
The larsens model was therefore improved to get better results.

Oil pipeline vandalism is the ugly act of drilling or cutting into the pipelines with the intent to steal its contents. Between 2010 and 2012, a total of 2,787 pipeline line breaches were reported on pipelines belonging to the Nigerian National Petroleum Corporation (NNPC), resulting in a loss of 157.81 metric tons of petroleum products worth about N12.53 billion naira, not even
mentioning the loss of human lives, and environmental pollution. Hence there is a dire need for Nigeria's Oil pipelines to be monitored constantly and remotely, so as to checkmate these said acts of vandalism. An Arduino Uno board, a GSM/GPS module, and a Lithium ion battery pack enclosed in a sealed anti-corrosion container makes up the surveillance system. The prototype was tested on a 10m pipeline, buried 2m deep with piezo-electric pickup sensors of threshold range from 21 to 210 attached to the pipeline. The acquired analog signals are processed by the Arduino Uno controller board into a digital signal, using a customized algorithm that quantifies the vibrational activities going on at the surface. The results obtained contain sensor node positions in a pipeline network, geographic coordinates (longitude and latitude), date, time and distance. Which are transmitted as an SMS alert (using the GSM/GPS module shield) to the control station or relevant security officials for the proactive interception of vandalism activities.