Mechanical Engineering Intern – Problem solving: Investigate and propose solutions to resolve the piezo-ceramic cracks that appeared in density viscosity sensors during production (6 months)
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Density viscosity sensors are generally used in sampling tools to have a direct estimation of the fluid properties downhole in a gas or oil well. These sensors are built using a piezo-ceramic that excites a vibrating beam. This sensor is exposed to high pressure and high temperature when used. For the last few years, the manufacturing yield for one density viscosity sensor product remained extremely low. A first investigation showed that a crack is appearing in the piezo-ceramic inside the sensor when it is put under pressure. The purpose of this internship is to help the investigation team to understand the exact failure mechanism.
The internship project will be organized in 4 phases:
1/ Literature reading to have a better technical understanding of PZT behavior
2/ Material characterization with lab tests (batch effect vs design margin)
3/ Design and numerical simulations to reproduce failure and propose alternate robust sensor design
4/ Prototype build and qualification test campaign
Essential Responsibilities and Duties:
The intern would work closely with manufacturing and its support team.
The expected deliverables:
1/ Memo giving an explanation of the failure mechanism that causes the crack inside the piezo-ceramic
2/ Alternate design proposition
3/ Support for test campaign
Schlumberger is an equal employment opportunity employer. Qualified applicants are considered without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or other characteristics protected by law.