In the last decade, natural plant fibers (jute, sisal, coir, banana, hemp, kenaf, flax, etc.) are getting attention from many researchers and academicians to utilize it as an alternate reinforcement of synthetic fiber reinforced polymer composites. These fibers are becoming a great replacement of conventional fibers (such as glass, carbon, and aramid) due to their light weight, low cost, carbon neutrality, fairly good mechanical properties, high specific strength, and biodegradability characteristics. Some chemical treatments are required to enhance the fiber matrix interfacial strength and to minimize the moisture absorption by these fibers which would ultimately improve physico-mechanical properties of these fiber reinforced composites. This paper is a review on mechanical properties of the natural plant fiber reinforced polymer composites and various factors affecting the mechanical performance of it. The tribological behavior of natural fiber reinforced polymer composites and scanning electron microscope analysis are also discussed. Some mathematical models are mentioned which are useful to predict mechanical behavior of the composites. It is found that Halpin–Tsai equation is the most effective equation amongst others in predicting Young’s modulus for short-fiber reinforced composites with minimum error. The applications of natural plant fiber reinforced polymer composites in various engineering fields are discussed.

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Tfws papaf was sebcted for preaentatmn by an SPE Prcgram Canmmae following rewew of mfamahon Con! aineal In an abstract s.ulmm tad by the authcf (s) Ccmlcnw of ma papar as pfe8entad, have nof been revmwad by lha Society of Petrolaum Engmaers and ale subject to cm'rMon by the author(s) The ma!enal as pmsemed, does not necessary reflect any pomt$m of the SOmaty of Petrolmm Ewmemrs, is offcars, or mambars Pap-am presanted at SPE meslmgs are subpct to pubhcatum rewew by EdNortal Commt!ees of the Somety of Petroleum EngIn%ers Perm!swon to copy !s restricted to an abstracl of not more than 300 wofds Illustralons may not be cOpted The abstract shoulo conlam conspicuous &5muwk@tnenl of where and by whcm the paper was presented V/me L,braflan, SPE P O BOXS33S3S, Richwdscm TX TSCW-2836. U S A lax 01-21 4-952-W35Abstract A joint initiative between BP and Schlumberger began in mid-1994 to develop techniques for the diagnosis and treatment of unwanted fluid entries in high angle and horizontal wells. The first full scale test of the flow diagnosis technology to occur in a BP asset took place in an extended reach well at the Wytch Farm oilfield in November 1995.In order to measure oil and water flow rates it is necessary to measure both the hold-up and velocity of each phase. A novel toolstring combination was developed which incorporated new sensors especially targeted at the stratitied flow regimes encountered in horizontal wells and featured the capability of measuring flow parameters by several independent methods, enhancing confidence in interpretation.The new sensors could independently measure the velocity of the oil and water phases by measuring the time of flight of iniected Dassive fluid markers as well as bv the well . . established oxygen activation method. Fluid holdup was obtained from a nuclear carbon-oxygen ratio method and an imaging tool. Additionally the imaging tool, based on an array of local electrical probes, could give a real time representation of the distribution of hydrocarbons and water in the borehole. Conventional production logging measurements such as the spinner, pressure and temperature were also made.The primary objectives of the logging were to determine the oil and water flow profile along the cemented and perforated liner and monitor the movement of the reservoir oil-water contact. Entry points for oil and water as well as zonal contributions were confirmed by excellent correlation between the various logging sensors.

In the present study, the effect of fiber architecture on mechanical properties of E‐glass fiber reinforced polymer composite has been investigated experimentally. The influence of fiber volume fraction on strength of composite has also been predicted using second order polynomial regression models. The glass fibers were arranged in different architecture like unidirectional continuous, unidirectional discontinuous, short randomly oriented, transversely aligned, and woven for preparation of composites. The tensile and flexural tests were performed as per ASTM D3039 and ASTM D790, respectively. The experimental results of tensile and flexural properties of composites have been discussed. Results predicted by the regression models are in good agreement with experimental results which indicate the goodness of fit and the models are statistically significant.