... waterflooding. The field contains light oil (40° API) in highly stratified sand-shale sequences with low net-to-gross ratios. Despite the challenging conditions for polymer injection including high reservoir temperature, low permeability, and high water cut, the large-scale polymer injection pilot has...

... co 2 reservoir upstream oil & gas monitoring acquisition subsurface storage m-foss surface seismic requirement time-lapse surface seismic plume migration technology screening cement evaluation logging climate change injection cost effective mmv planning selection integrity...

... Abstract Water control in mature heavy-oil reservoirs is a well-known challenge in the Oil & Gas industry. Due to the mobility ratio, water tends to flow much easier compared to oil, leading to premature water breakthrough which pushes water cut values to over 95% or more within weeks...

.... The well was rather valuable in mapping the reservoir with seismic and have a control point for determine the overall structure of the Pohokura field. The Mangahewa structure was identified as a prospect early in the exploration of Taranaki Basin and was first drilled in 1961. Mangahewa-1 encountered...

... engineering concentration reservoir atmospheric co 2 society relevance Introduction The CO 2 buildup and implications for climate change and its effect on the future of the earth are of great concern to all of us. This paper is about the underlying uncertainties in the challenges that lie ahead...

.... The CO 2 has to be captured and sequestrated in reservoirs or aquifer systems, which is costly. A revolutionary approach is to generate and extract hydrogen directly from petroleum reservoirs by taking advantage of the abundant unrecovered hydrocarbons in reservoirs. This approach does not involve...

... potential of unconventional reservoirs, forecasting future production accurately using Arps decline models becomes more challenging because of the complicated fluid flow mechanisms characterizing stimulated multi-layered ultra-low permeability porous media. Many field studies indicate unreliable forecasts...

... From Kumar and Ramey (1974) and Kumar (1977) , Dimensionless Time, Abstract This paper presents a new concept of Pseudo-Aquifer Index and a major departure from classical methods to estimate transient water influx using Kumar-Ramey equation employing reservoir average pressure obtained...

... The underlying assumptions for a uniaxial strain model as such include the following. (1) The lateral strain of reservoir rock is negligible; (2) the pore pressure reduction is uniform throughout the reservoir; (3) there is no vertical confinement effect and consequently no vertical stress change...

... enable "thermal soak" periods to thermally charge the working fluid while mitigating thermal depletion in the reservoir. Technical challenges of a viable closed-loop downhole heat exchanger scheme are discussed. Advantages of Closed-loop Geothermal Systems (CLGS) compared to Enhanced Geothermal System...

... 1997). However, nowadays, with emerging need of power resources, production is maximized by drilling long horizontal wells instead of vertical and sometimes with multi-laterals to extend and increase the wellbore contact with the reservoir. Therefore, with such wellbore design, this practice...

... To ensure that the optimum solution was found, the following steps were taken, as detailed in this paper: Evaluation of lowest risk completion options. Quantification of potential crossflow rates. Quantification of pressure depletion in the two reservoirs during production. Final...

... consumption, the volumes needed are so high that underground storage options such as salt caverns, depleted oil/gas reservoirs, and aquifers, become appealing. Abstract Hydrogen (H 2 ) is an attractive energy carrier and its true potential is in decarbonizing industries such as providing heat...

... at high reservoir temperatures and don't lag flood front velocity if used in secondary recovery projects such as waterflooding. In addition, unlike the available limited number of chemical tracers, there are unlimited number of identifiable DNA tracers. In waterflooding, the DNA tracers are used...

... the fields with the best geological and reservoir properties to support secure underground hydrogen storage. We developed a three-stage set of criteria for selecting potential hydrogen storage sites. In stage 1, our screening approach combines integrated geoscience and environmental factors to identify...

... ∂ p M ∂ t Similarly, the unsteady-state diffusivity equation in matrix 2 layer [- h F / 2 < z <-( h F + h V )/ 2 ] is written as: The idealized triple-porosity system for representing the NFGR is shown in Fig. 1 . The reservoir contains multiple repetitive elements...

... for a production stimulation feasibility study. The reservoir and well information were reviewed, and a reservoir model was built in an advanced matrix stimulation simulator. Core flow tests with 3D wormhole geometry visualization were used to calibrate the simulator's fluid-rock interaction parameters. Various...

... ]. Abstract The reservoir management processes of heavy oil reservoirs are challenging and require different types of considerations when contrasted to conventional reservoirs. The development and optimization of heavy oil thermal EOR projects entails the injection of steam through dedicated injectors...

...Unconventional study Monitor gas production In shale gas reservoirs, gas transportation during production may be influenced by several geological processes (e.g, diffusion, isotope fractionation and gas adsorption/desorption), which affect the gas content and isotope composition (Pang et al...

... environments typical for depleted reservoirs but there are other controls on sticking risk that can be managed. This paper describes the measures taken in an open hole wireline logging operation in a Deepwater Gulf of Mexico well under close to 7000 psi overbalance in a high temperature-high pressure (HTHP...