... engineering discipline that most water-injection wells have been fractured during the course of inection. When injecting into low permeability formations or with the injected water not being of standard quality, fractures are sometimes induced intentionally to obtain a higher injectivity as required from...

... should be accounted for when determining the fracture pressure. During the long-term water injection, a flow barrier may form due to large particles plugging on the wellbore wall, likewise, the formation permeability around the well may suffer damage due to fine particles plugging the pore channels...

... at the drilling site to achieve true zero discharge. However, formation damage due to solid-laden slurry injection can cause large uncertainties in injection well performance and waste containment assurance. Complicating the problems are the many formation damage mechanisms that are often difficult to model...

... Abstract Formation damage around horizontal wells can result in poor performance and failure of these wells. The objective of this paper is to present a new solution for transient pressure behavior of horizontal well injectors and/or producers in injection processes. Equations for productivity...

... formation damage due to seawater injection do not accurately reflect the processes occurring in the field, such as the variation of iron concentration with temperature. Traditional "rules-of-thumb" for predicting the lifespan and performance of injection wells ignore the contribution of temperature...

... relative permeability seawater injection well injector well saturation injection phosphate ester condensate production well formation damage differential pressure application brine permeability permeability Introduction Corrosion inhibition can be required for both production wells...

... formation damage in injection wells resulting in unacceptable injection rates and/or pressures. They are removed with a hypochlorite solution. This solution is very alkaline and requires a HCl over-flush to activate the material, i.e. hypochlorous acid is generated. Silt and Clay: Silt and clay damage...

... of "wastes" contained in the injection water, etc. Because disposal water often contains more amount of "waste", water disposal wells are therefore more prone to formation damage when compared to oil producers only having native reservoir fluids produced. Remedial well treatment is often a mandatory...

... Execution Well CH-182 The injection test before treatment of the CH-182 well showed 0.3 bpm and 2,507 psi wellhead pressure ( Fig. 6 ). A matrix treatment was delivered to remove fines and calcium carbonates, since the well had not produced through the area for injection. The formation damage...

... Formation damage is defined as any process that causes a reduction in the natural inherent productivity of gas or oil producing formation, or a reduction in the injectivity of a water or gas injection well. It represents a big problem in the oil and gas industry, where the pore space of formation is blocked...

... common challenge during waste slurry injection (WSI) is the continuous loss of well injectivity due to poor engineering design of the injection parameters for most of the current existing WSI wells. For the WSI operation, near wellbore formation damage (including the fracture damage) will be formed...

... formation, or reduction in injectivity of water or gas injection well ( Civan, 2000 ). In other words, the formation damage can be defined as the reduction of the original permeability near the well-bore caused by fluids used during drilling/completion and workover operations or injection of water/chemicals...

... investigate the injectivity impairment mechanism. Damage field evidence was merged with formation characteristics, injection water quality, network maintenance and well operations. Two different impairment mechanisms were identified: a first damaging already evident during the initial injectivity tests...

... in Hydrodynamics, 2005, the oil production rate is 0.6%, and the 20(2): 221-225. injection-production ratio is 0.9 to 1.05, and the risk of casing damage in the SAND and SHALE formations is 5. Liu Xianshan. Research on the meso-mechanism of the minimum. sand production in oil wells based on three-dimensional fluid...

... analysis, solubility and compatibility test have been conducted and clarified the root cause that formation damage occurred in multiple mechanism related to incompatibility of the workover fluid and organic deposition. Then, possible well treatments were listed with pros and cons by considering post water...

... Abstract The Mariner Field consists of two shallow heavy oil reservoir sections: the deeper Maureen Formation and the shallower Heimdal Reservoir. Produced water is re-injected through stand-alone screens providing pressure maintenance for the aquifer support and producer well life longevity...

... with maximum well head pressure 700 psi. A permeability reduction may occur near the wellbore due to formation damage. However, a reduction in permeability can result in low injectivity of disposal water considering the concern for the adverse impacts of increasing volumes of produced water to meet the oil...

... vertical fractures. They concluded that there are two types of flow impairments in a fractured well that will result in a lower well injectivity. First type is the fracture faces damage, which will affect the fluid leak off from the fracture into the formation. While the second type is the choked fracture...