... Abstract A Seneca Resources Company, LLC (Seneca) natural gas well in Pennsylvania was leaking methane from both the 13-3/8 in × 9-5/8 in (55 psi) and the 9-5/8 in × 7 in (85 psi) cemented annuli. Previous attempts to mitigate the problem had proven unsuccessful, which prompted the trial...

... Abstract Steam methane reforming (SMR) technology generates about 95% hydrogen (H 2 ) in the United States using natural gas as a main feedstock. While hydrogen is clean, the process of hydrogen generation via SMR is not, as it emits about 10 times more carbon dioxide (CO 2 ) than hydrogen...

... analysis, commonly known as Mud Gas Isotope Logging (MGIL), provides continuous sampling of stable carbon isotopes of methane (δ13C1), ethane (δ13C2), and propane (δ13C3). The service, performed with a GC-C-IRMS analyzer, was proven and validated for an operator through two case studies. 98 The first case...

... gas origin and thermal maturity. To assess gas production, seven gas samples were collected periodically from the same unconventional shale interval and were analyzed for their isotopic signatures. The results demonstrate that carbon isotopic composition of methane to pentane can be used...

... Authors are grateful for support of colleagues and engineers who contributed to the data used in this paper. References References Intergovernmental Panel on Climate Change 2018-10-08 IEA Methane Tracker 2020 ; https://www.iea.org/reports/methane-tracker-2020 US...

... modifications. A generic well was used to study the differences between a CO2 well and a hydrocarbon (methane) well with respect to design and procedural changes in case of a well control incident. A well control simulator capable of transient multiphase modeling of hydrocarbon and CO2 systems was used...

... volume diffusion method to measure the high-pressure diffusion coefficients in a newly designed high-pressure tube. The experimental method was first validated using methane + hexadecane and methane + decane, and then used to measure the methane diffusion coefficients in two live oils at reservoir...

... Abstract With atmospheric methane concentrations rising, spurring increased social concern, there is a renewed focus in the oil and gas industry on methane emission monitoring and control. In 2019, a methane emission survey at a bp asset west of Shetland was conducted using a closed-cavity...

...-out of natural gas, below dew-point pressure. Despite that most of this liquid will not produce due to not reaching the critical saturation, natural gas will be blocked by the accumulated liquid and will also not produce. This work investigates the effects of gas injection (such as methane, carbon...

... by the renewable energy resources required to generate so much electricity, and the additional cost required to employ electrolysis to generate hydrogen for energy storage not possible for electricity. Today an abundance of natural gas offers an option for hydrogen generation from methane that can include...

... that implementing capillary pressure or critical shift alone cannot fully describe the confined phase behavior. reservoir simulation methane coexistence curve modeling & simulation upstream oil & gas droplet nanopore solid wall fluid modeling pvt measurement strength pseudopotential model...

.... Oil recovery and solvent recovery were the key performance indicators used to compare CSI effectiveness of each solvent blend. The operating pressure for each test was kept relatively constant for each solvent blend tested. Tested solvents included blends of methane/propane, carbon dioxide/propane...

... and provide physical interpretation as well as an empirical relation to obtain diffusivity values with GOR. In particular, we first create synthetic live oils by combining a stock tank oil (STO) and methane in various dilution ratios, and then, we Abstract Molecular diffusion plays a dominant role...

... A diagram of the instrument and ancillary equipment is given in Figure 1 . Abstract Adsorption and flow characteristics of methane and other natural gases onto tight rock formations is of economic interest for the proper evaluation and production of the field. In this work, a novel technique...

... chemical flooding methods enhanced recovery foam flood experiment gas mixture flood fractured reservoir methane recovery injection reservoir Oil Recovery Upstream Oil & Gas pressure drop gas flood capillary pressure synthetic oil enhanced oil recovery matrix fracture...

... enhanced recovery displacement chemical flooding methods methane PVT measurement oil sample minimum miscibility pressure composition Upstream Oil & Gas Simulation experiment crude oil reservoir co2 injection fraction society of petroleum engineers live oil system...

.... In this work, a systematic and practical pressure-pulse decay (PPD) technique is given to determine ultralow permeabilities of shale reservoir core in a cell with finite volume. The test gas can be non-adsorption gas such as helium or adsorption gas such as methane. As described herein, given appropriate...

... Abstract Analysis of dissolved methane and volatile organic compounds (VOCs) in water is crucial in monitoring the underground water quality, specific to shale oil and gas subsurface activities. Existing methods for monitoring these analytes generally rely on manual sampling at hydrogeological...

... for reservoir simulation. The non-equilibrium partition coefficient developed for vapor solvents of methane, propane, and butane using compressible assumption for the vapor phase. The oil production appears to improve using a solvent if instantaneous equilibrium is assumed. In this study, the nonequilibrium...

... Monte-Carlo simulation is used to observe the effect of confinement on phase behavior of pure methane in 2 nm. The model takes into consideration the effects of the intermolecular forces between fluid particles and between fluid particles and solid surface. Density of methane is obtained from...