Cementing of the casing pipes inside the wellbore is considered as one of the most expensive and difficult operations during the well construction process. A low quality cementing job leads to further repair operations, which are usually costly and time-consuming to conduct. Polymer cements are being used for decades in the oil and gas industry due to their improved properties such as sedimenta...

objectives: because of the high rates of accidents, the construction industry has become a hazardous industry in iran and therefore paying more attention is required. this paper investigates safety management in construction companies for improving workers’ safety as one of the ergonomics aims. methods: in order to survey the safety management in construction companies a questionnaire was prepa...

Sand production is considered as one of the significant issues that significantly reduce wellbore productivity. The process sand or solids in operations crucial operational inefficiencies can lead to wells collapsing. Besides, drilling mud might erupt through formation. Therefore, it essential properly determine what types are produced correctly predict efficient control mechanisms. This paper ...

By Surgn.-Capt. P. IIeiiiu, m.d., f.r.s.e., d.p.h. Camb., Fellow, Santy. Inst., Fellow of British Inst., Pub. Health, Health Officer, Chudderghat Municipality. 1 iieiie are three varieties ot wells, shallow or superficial, deep and artesian. The last mentioned may be considered a variety of deep well, and we will dispose of it with a few words, for the reason that artesian wells have, up to dat...

Introduction: Nearly half of occupational accidents in Iran occur in construction sites. Therefore, modeling of occupational accidents in these sites is one of the solutions to design safety strategies to reduce occupational accidents in the field of construction. This study was designed and conducted with the aim of modeling the cause-consequence of accidents in construction sites. Material a...