Simulation of slender drop object into seabed and its kinetic energy distribution | |
| Author | Preecharcharn Butpracon |
| Call Number | AIT Thesis no.OTM-12-02 |
| Subject(s) | Ocean bottom Simulation methods Petroleum pipelines--Simulation methods |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Offshore Technology and Management, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. OTM-12-02 |
| Abstract | This study focuses on the motion path and kinetic energy of slender dropped objects i.e. one type of drilling collar and three type s of c asing. Two simulation models were applied . In t he first simulation , slender objects were dropped only in air from four different level s by varying dropping time periods and air densities. The incident angles at the seawater surface were determined and compared to Weerayutwattana’s result . The optimum dropping time periods obtained from fitted case were 0.94 and 0. 75 for three type of Casing and one type of Drilling Collar. The optimum air density was 1.269 kg/m 3 for all types of objects. This time periods and air density were input to the second simulation. In t he second simulation, slender objects were dropped from dropped from air to seabed. The falling speed and kinetic energy at all depths were determined. S even mo tion type s of motion path s were observed. Th e different dropped heights resulted in the different impact angles at the seawater surface and the moti on path s. The vertical velocity and kinetic energy tended to decrease when the object submerged deeper and reached the equilibrium at about 10 m eters below the seawater surface. Dropped height did not affect to its kinetic energy after this point. Thirtee n- inch Casing obtained maximum of kinetic energy about 5.7 kilo -joules. The horizontal displacements were calculated at seabed for each dropped height. The maximum horizontal displacement was 43.2 meters at the water depth of 100 m. |
| Year | 2012 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. OTM-12-02 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Offshore Technology and Management (OTM) |
| Chairperson(s) | Chiu, Gregory L. F. |
| Examination Committee(s) | Pornpong Asavadorndeja;Punchet Thammarak |
| Scholarship Donor(s) | Chevron Thailand Exploration and Production, Ltd. |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2012 |