Acoustic cementation logging tools have been run in a full-scale cement flow loop and the logs compared to a physical examination of the cement in the annulus. In the flow loop the complete cycle of cementing operations -mud and spacer circulation, and cement placement -was carried out. The flow loop included artificial formation and double string sections.Three tools were used in the flow loop: a sonic tool and two ultrasonic pulse-echo tools. The sonic tool measures the attenuation of sonic waves along the casing and is sensitive to shear coupling between casing and cement. The ultrasonic tools measure the damping of a thickness-mode resonance and the acoustic impedance. One ultrasonic tool samples every 45 degrees in azimuth; the other provides complete coverage using a rotating probe.Conditions such as channeling, good and contaminated cement, mud and water were created in the flow loop. The logs were consistent with the subsequent physical examination, within the resolution limits of each tool. Very thin annulus and highly contaminated cement posed interpretation problems. Of the tools investigated, the rotating ultrasonic tool provided the most accurate predictions of cement distribution and quality.The results illustrate the advantages and limitations of the different types of tools, and will be a useful aid in the interpretation of cementation logs.

Acoustic cementation logging tools have been run in a full-scale cement flow loop and the logs compared to a physical examination of the cement in the annulus. In the flow loop the complete cycle of cementing operations -mud and spacer circulation, and cement placement -was carried out. The flow loop included artificial formation and double string sections.Three tools were used in the flow loop: a sonic tool and two ultrasonic pulse-echo tools. The sonic tool measures the attenuation of sonic waves along the casing and is sensitive to shear coupling between casing and cement. The ultrasonic tools measure the damping of a thickness-mode resonance and the acoustic impedance. One ultrasonic tool samples every 45 degrees in azimuth; the other provides complete coverage using a rotating probe.Conditions such as channeling, good and contaminated cement, mud and water were created in the flow loop. The logs were consistent with the subsequent physical examination, within the resolution limits of each tool. Very thin annulus and highly contaminated cement posed interpretation problems. Of the tools investigated, the rotating ultrasonic tool provided the most accurate predictions of cement distribution and quality.The results illustrate the advantages and limitations of the different types of tools, and will be a useful aid in the interpretation of cementation logs.

Cement job evaluation has always been a major problem. Acoustic and ultrasonic logs are widely used to assess the quality of the cement job but even experts experience difficulties in locating cement on a bond log. Bond Index (BI) has been the only interpretation method to make quantitative evaluation of the cement job. Unfortunately, BI is far from being an exact figure and in many cases it will not be a valid method to use. Moreover, whenever BI is valid, it is very difficult at present to choose the right references for doing the interpretation. This paper demonstrates that the evaluation of cement jobs can be significantly improved when the design and actual cement job data are taken into consideration. Integration of this data, linked to characterizing the cement by its acoustic properties rather than its compressive strength, allows a calculation of all reference values for a . better BI interpretation, and prevents misinterpretation in many cases. Field cases are also discussed which show the validity and the added benefits of the new integrated approach. 1

This paper presents a bibliography of Sanamed, journal of medical and health science, founded by a group of doctors from Novi Pazar. The Journal published original articles, case reports, literature reviews, articles on history of medicine, articles for practitioners, book reviews, and other medical information in the field of medicine, dentistry, pharmacology and pharmaceutical sciences. The bibliography contains 101 bibliographic units and includes the period from 2014 to 2017 (4 years). The aim of this bibliography is to be exhanstive at including all the contribution published in all the numbers of individual years. The material is completely formally described and all bibliography units are objectively classified - they have UDK numbers and subjects, which are systematized in the subject sense.