Formation damage can cause significant decreases in well productivity and consequently loss in revenue. In the assessment of formation damage, all aspects of a well and its history should be investigated:
Correct identification and characterisation of formation damage helps create the right treatment for the damage, leading to increased production rates and extension of the life of any field. This session will provide new perspectives on how to evaluate and predict the types of formation damage via field experiences along with laboratory and mathematical modelling.
This session will review formation damage prevention and control in relations to wellbore operations of drilling, completions for field developments, workovers, injection and stimulation treatments. It will explore perforation techniques and well control fluid contingencies; formation damage prevention for complex completions; pre-development determination of formation damage mechanisms and mitigation measures; and formation damage prevention in stimulation; focusing discussions on case histories to understand what worked and what could be done better.
Formation damage prevention and control formation damage is introduced when wells are:
Formation damage may even be introduced when you try to remove formation damage during well stimulation treatments. This session will cover formation damage control and prevention during all phases of a well’s life from drilling to production or injection.
This session will discuss the new approaches in identifying damage types from actual field experiences, treatment methodologies and formulation, challenges during execution and monitoring techniques. Recent advances in remediation includes various types of chemical treatments, e.g. improvement of mud acid design or using chelating agents to remove the near wellbore damage, gravel pack cleaning using propellant stimulation technologies and other advanced perforating techniques to bypass the damage in order to recover the oil or gas production in the effected wells.
This session will explore the potential formation damage mechanism that can occur within unconventional reservoirs. Formation damage experienced within tight oil and gas reservoirs can be much more significant than within conventional reservoirs given the very low permeabilities present within unconventional reservoirs. Within such reservoirs, removal of formation damage can be problematic. This session will cover different aspects of formation damage evaluation and potential impact on well productivity.
Injectivity impairment is economically challenging. Discussions in this session will explore injectivity decline during produced water re-injection (PWRI), its disposal, sea-water injection and EOR in soft and tight reservoirs caused by poor quality of injected water, pore collapse and induced rock stress in horizontal, fractured and perforated wells. The session will review injectivity damage prevention, removal and mitigation.
This session covers formation damage caused by fines mobilisation, migration and straining in oil and gas reservoirs. The topics include oil and gas well productivity decline, reduction of return permeability due to fines after drilling, loss of injectivity due to induced fines migration and improved low-salinity waterflooding by fines-induced formation damage. This session will provide new perspectives on how to prevent and evaluate the fines-induced formation damage by presenting field experiences together with laboratory and mathematical modelling.
Acidising is a technique used to stimulate a well to improve flow or to remove damage. Acidising treatments include wellbore cleanout, matrix acidising and fracture acidising. The key to acidising success is in the understanding of how it works, the optimum conditions for its application, and proper evaluation of well response after the treatment. This session will focus on how different acid stimulation techniques work and the challenges of selecting the appropriate technique and the correct implementation thereof.
The prevention, remediation, and removal of various types of formation damage can require the handling and disposal of substantial volumes of fluids and solids, and proactive prevention of precipitation tendencies from the formation and/or their introduction into the formation. These can manifest themselves in any well or pumping operation, with returned fluids, and in the handling of contaminated fluids and solids. This session will shed light on the measures to minimise the possible environmental effects resulting from such activities.
Advances in new technologies and evolution of existing technologies play a key role in enabling us to produce and recover more hydrocarbons. Novel solutions and approaches to issues related to formation damage will be presented in this session. These solutions include chemical cleanup, mechanical solutions, application of nano technologies, and the approach of using formation damage to improve recovery.