A Study on Experimental Procedures for Evaluation of Formation Damage During Drilling operation

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 412

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شناسه ملی سند علمی:

OGPH03_013

تاریخ نمایه سازی: 6 خرداد 1398

چکیده مقاله:

The Formation damages caused by different mechanism of drilling to reservoirs are different in types and value. In this paper, the geologic characteristics and types of such damages were analyzed. Then, based on the relationship between reservoir pressure and bottom hole flowing pressure corresponding to different drilling operation, the experimental procedures on reservoir damages in three drilling technique (e.g. gas drilling, liquid-based underbalanced drilling and overbalanced drilling) were designed It is concluded that the UBD is beneficial to reduce formation damage but it is, to some extent, sensitive to the stress and that the OBD has more reservoir damages due to the invasion of solid and liquid phases. It is concluded that the laboratory experiment results of reservoir damage are accordant with the reservoir damage characteristics in actual drilling conditions. Therefore, this method reflects accurately the reservoir damage characteristics and can be used as a new experimental evaluation method on reservoir damage in different drilling operations.

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نویسندگان

Meysam Dehbalaee

Petroleum University of Technology

Mehdi Bahari Moghadam

Petroleum University of Technology,Faculty member of Ahwaz Faculty of Petroleum