tailieunhanh - Reservoir Formation Damage Episode 2 Part 10

Tham khảo tài liệu 'reservoir formation damage episode 2 part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Laboratory Evaluation of Formation Damage 457 bearing formations under actual scenarios of field operations and for evaluation of techniques for restoration and stimulation of damaged formations are essential for efficient exploitation of petroleum reservoirs. Experimental systems and procedures should be designed to extract meaningful and accurate experimental data. The data should be suitable for use with the available analytical interpretation methods. This is important to develop reliable empirical correlations verify mathematical models identify the governing mechanisms and determine the relevant parameters. These are then used to develop optimal strategies to mitigate the adverse processes leading to formation damage during reservoir exploitation. As expressed by Thomas et al. 1998 Laboratory testing is a critical component of the diagnostic procedure followed to characterize the damage. To properly characterize the formation damage a complete history of the well is necessary. Every phase from drilling to production and injection must be evaluated. Sources of damage include drilling cementing perforating completion and workover gravel packing production stimulation and injection operations. A knowledge of each source is essential. For example oil-based drilling mud may cause emulsion or wettability changes and cementing may result in scale formation in the immediate wellbore area from pH changes. Drilling damage in horizontal wells can be very high because of the long exposure time during drilling mud damage and the mechanical action of the drill pipe on the formation face thus the well s history may indicate several potential sources and types of damage. For meaningful formation damage characterization laboratory core flow tests should be conducted under certain conditions Porter 1989 Mungan 1989 1. Samples of actual fluids and formation rocks and all potential rockfluid interactions should be considered. 2. Laboratory tests should be designed in view of the