Hydraulic induced fracturing (HIF) in oil wells is used to increase oil productivity by making the subterranean terrain
more deep and permeable. In some cases HIF connects multiple oil pockets to the main well. Currently there is a need to
understand and control with a high degree of precision the geometry, direction, and the physical properties of fractures.
By knowing these characteristics (the specifications of fractures), other drill well locations and set-ups of wells can be
designed to increase the probability of connection of the oil pockets to main well(s), thus, increasing productivity. The
current state of the art of HIF characterization does not meet the requirements of the oil industry. In Mexico, the
SENER-CONACyT funding program recently supported a three party collaborative effort between the Mexican
Petroleum Institute, Schlumberger Dowell Mexico, and the Autonomous University of Juarez to develop a sensing
scheme to measure physical parameters of a HIF like, but not limited to pressure, temperature, density and viscosity. We
present in this paper a review of HIF process, its challenges and the progress of sensing development for down hole
measurement parameters of wells for the Chicontepec region of Mexico.
An investigation study concerning positioning, alignment, bonding and packaging of optical fibers for interfacing with
optical MEMS devices is being reviewed in this paper. The study includes a review of techniques and critical issues for
optical fiber positioning, alignment, bonding, optical improvements, and coupling and interfacing through micro-lenses
and waveguides. Also, we present a packaging design structure for hermetic sealing of optical MEMS devices requiring
interfacing through optical fibers which considers aspects such as processes, assemble schemes and bonding techniques
for Optical Fibers, which are briefly reviewed in this work. This packaging design considers the following conditions:
hermeticity of the MEMS devices, optical fiber and MEMS die alignment and positioning, assembly process, and Simachined
fixturing design for final assembly and positioning.