Formation evaluation in carbonates is often considered technical essay
This chapter was written to provide a fairly detailed overview of the evaluation of carbonate formation. The best approach to evaluating the formation of carbonates or any other rock type is to first and foremost understand the petrophysics of the rock. According to these studies, a preliminary assessment of reservoirs before injection is crucial to ensure the potential of the chosen site for safe, The development methods and EOR technologies of carbonate reservoirs are systematically summarized, the relevant, Carbonates are sensitive to induced fractures, which affects the quality of the reservoir and its geomechanical properties are affected, which can often lead to damage to the formation. For example, a representative model of the pore space is needed to model the geomechanical properties of a core-scale carbonate formation. The Present, Carlos Torres-Verdin. 1.42K subscribers. Subscribed. 174. 6K years ago. PGE358 · Principles of formation evaluation. Instructor: Carlos, A new technique is proposed to predict porosity based on mechanical specific energy MSE, as measured using a drilling dynamics instrument. The terms formation evaluation FE, well log analysis and petrophysics are often used interchangeably, but have slightly different meanings. According to the screening criteria of Raza et b, highly heterogeneous geological media have undergone complex diagenesis and are not often considered suitable sites for CCS applications . In general, carbonates increase the likelihood of effective capillary capture when a strong water-wet system prevails. Raza et al., Abstract. Acidification is a well stimulation operation that consists of injecting a reactive fluid into the rock formation. In carbonate rocks, the solutions create conductivity channels called wormholes. The pattern formed depends on the flow rate, thermodynamic conditions and various rock-fluid interaction parameters. The process of MICP begins with introducing appropriate microbial cultures or solutions into the target environment. These microorganisms are usually mixed with a solution containing calcium ions. and a source of carbonate ions, 2 - which are essential for carbonate precipitation. The microorganisms metabolize carbon, SPE Res Eval amp. 04:832-848. and its porosity. This new technique is particularly useful for evaluating the formation of carbonate reef reservoirs drilled using the PMCD pressure mud cap drilling technique. Under these conditions, the formation near the wellbore is often deeply penetrated by drilling fluids and cuttings. Unconventional reservoirs, including gas shales and tight gas sands, have gained importance in the energy sector due to technological advances and escalating energy demand. The oil industry is eagerly refining techniques to decipher these reservoirs, with the aim of reducing data collection costs and reserve uncertainties. However, injected mixes with the formation water to produce an acidic brine, that is, saturated brine that reacts with carbonate minerals and can affect the integrity of the formation. , injectivity.