Formation Damage Removal Through Acidizing of an Oil Well After Drilling and Completion

Abstract

This paper discusses a real case study on how formation damage can be removed after finishing all operations in drilling and completing a well that is used vertically for producing commercial hydrocarbons using Over Balanced Drilling (OBD) techniques. Formation damage happens in every drilled well during field operations. It is an undesirable and complicated situation usually caused by solids invasion, fines movements, organic precipitation and deposition, and collapse and swelling formations (clay formations). The production performance of drilled well is significantly affected by the scale of damage in the invaded formation of the pay zone.

Formation protection method of oil‐based drilling fluid for deep fractured tight gas reservoir

“…A few systematic studies rarely consider the comprehensive effects of multiple factors 13‐15 . On the other hand, the existing research generally selects specific materials directly to carry out experiments, lacking pertinence, indoor evaluation is difficult to fully consider the formation factors 16‐20 . At present, the primary task of deep/ultra‐deep well drilling is to ensure the smooth completion of the operation.…”

“…[13][14][15] On the other hand, the existing research generally selects specific materials directly to carry out experiments, lacking pertinence, indoor evaluation is difficult to fully consider the formation factors. [16][17][18][19][20] At present, the primary task of deep/ ultra-deep well drilling is to ensure the smooth completion of the operation. Reservoir protection has been widely proposed, but it has not received much attention.…”