According to the report of Pezhvak Energy Engineering Services Co. the drilling of well number 8 of SiahMakan oil field project was successfully completed in 209 days. The important point is the time record of this well compared to all the previous wells (1-7) of Siahmakan oil field with a huge time difference of 150 to 200 days.
This success has been achieved by applying the experiences from the previous wells and the use of EMCBGA new technology products (LPM/LCM) for preventing and controlling loss circulation and also efforts of PECO personnel. by improving and optimizing the process of controlling drilling mud losses and drilling, many financial and time benefits have been achieved in this project.
Due to the proximity of high and low-pressure layers, Siahmakan is considered as a challenging field in terms of controlling drilling mud losses during drilling. These challenges have not only posed operational risks and the possibility of damaging the reservoir layer but have also imposed significant financial and time costs on the project’s budget and schedule due to unexpected delays.
PECO in cooperation with EMCBGA has recently introduced an effective solution for controlling drilling mud losses and drilling development wells in Siahmakan oil field. In this new endeavor, Asmari, Pabdeh, Gourpi, and Ilam layers drilled integrally by using innovative preventive products and NIF (Non-Invasive Fluid) wall-forming materials produced by EMCBGA, which are compatible with cutting-edge global technology and are produced in collaboration with EMC AS Norway inside the country.
This not only prevented drilling mud losses and high costs due to losing a large volume of drilling fluid but also reduced and eliminated problems caused by pressure differences in the drilling string, prevented shale instability and elimination of non-productive time resulting from cement plugging operations and as a result, there has been a significant reduction in drilling costs, time, and operational risks, while minimizing damage to the reservoir layers.
According to this report, the drilling operation of the 8 3/8″ hole section in this well was predicted to take about 23 days, covering a length of 1,110 meters, However, by successfully using the aforementioned materials and services, the time was reduced to 13 days, and 3,822 barrels of drilling fluid losses were prevented. Therefore, by improving and optimizing the process of controlling drilling mud losses and drilling, many financial and time benefits have been achieved in this project.
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