... ABSTRACT Slickwater or linear gel is often used for fracturing development in tight sandstone reservoirs. As it carries sand into the formation through the wellbore, its sand-carrying performance changes with the continuous change of liquid shear rates. In this paper, a new type...

... ABSTRACT In recent years, some platform Wells in the Fengnan 4 well area of Xinjiang Oilfield have adopted the zipper fracturing technology in the production process, which causes the change of pore pressure near the wellbore, and then leads to the complex distribution of ground stress around...

... multi-branch well fracture sample granite rock sample conductivity mpa reservoir geomechanics experiment united states government wellbore morphology igneous rock main wellbore liquid nitrogen fracture pressure high-temperature granite experimental result permeability coefficient...

.... The model considering the varying specific heat brings about lower reservoir temperature around the wellbore, and the maximum temperature is obviously higher than that in the case of varying thermal conductivity. In addition, the reservoir temperature can be enhanced by increasing the relative permittivity...

... ABSTRACT One of the most serious issues that arises during drilling operations is lost circulation. Significant study into wellbore strengthening has been conducted over several years in the attempt to improve the fracture gradient and reduce losses. Three ways to wellbore strengthening have...

... upstream oil & gas geologist asia government reservoir surveillance reservoir characterization hydraulic fracture fracture artificial intelligence wellbore united states government production control water hammer data production logging reservoir geomechanics petroleum engineer...

... proppant distribution between perforations. The first is particle settling in the wellbore, which becomes especially important towards the toe of the stage where the flow velocity is lower. The second mechanism is related to proppant inertia, whereby some particles are unable to follow the fluid...

... subdiscipline hydraulic fracturing mudstone displacement deformation clastic rock complex reservoir china government reservoir characterization engineering china petroleum machinery natural fracture dislocation wellbore mechanism tb01 well fracture petroleum science horizontal principal stress...

... in the wellbore (Qin et al., 2018; He et al., 2016). This paper presents a method using pressure-transient analysis to identify inefficient production locations of hydraulic fractures in highly deviated wells. A semi-analytical model is developed to consider unequal oil production rates and validated...

..., and cement slurry containing hollow glass beads into the wellbore in sections. The high porosity cement sheath formed by cement slurry containing hollow glass beads can effectively reduce the degree of casing shear deformation during formation slip, and the elastic and ductile cement slurry can effectively...

... surveillance injection rate production control injection matrix waterflooding hydraulic fracturing enhanced recovery reservoir characterization reduction scenario upstream oil & gas drilling operation europe government wellbore contribution fracture propagation pressure fluid injection...

... chelator, and sodium poly-naphthalene as dispersant and retarder are evaluated to provide a recommendation for rock-based geopolymer additives. Wellbore geometries is another investigating parameter. The paper compares the performance of normal, rectangle, and real-shape annulus. The real-shape well...

...-term wellbore integrity. INTRODUCTION CO 2 geological storage (CGS) is the main approach to solving the greenhouse effect. The major challenge in the operation of CGS project is CO 2 leakage (Zhang & Bachu, 2011). The Kansas region of the USA has been severely polluted by the wellbore sealing...

... wellbore in SC-CO 2 shock fracturing. The CO 2 real-gas-model in NIST database coupled the property parameters with the flow field. Numerical simulation obtained the pressure, temperature and phase parameters spatiotemporal distribution laws. The results show that SC-CO 2 impact pressure and temperature...

... of real-time and memory pressure-time data reveal that several phenomena somewhat similar to our extensive wellbore strengthening experience from depleted drilling can be made. Our detailed investigations also illustrated some of the potential root causes behind the apparent failure in various LCM...

... of surface coal gasification of traditional coal mining. It has the advantages of low gas production cost, high safety and good environmental benefits. However, effective temperature control technology of production wellbore still needs to be developed. Based on the annulus spray method and the combination...

... evolution between wellbores. Prior to testing, the experiments were simulated to predict the generation of a shock-induced fracture network between single and multiple wellbores in a variety of stress states. The quantification of wave arrivals, fracture growth, and development of the fracture network...

... Abstract Increasing number studies were conducted to explore the heat extraction performance of the enhanced geothermal system (EGS). However, most previous studies ignore the wellbore fluid flow and heat transfer effects and the variation of water thermophysical properties. It is difficult...

... . hydraulic fracturing experiment tight sandstone complex reservoir fracture propagation wang upstream oil & gas specimen journal triaxial loading zang fracture propagation hydraulic fracture visualization study tian wellbore fracture propagation characteristic ARMA 22 0186...

... to secondary collapse. As the higher proportion of gas intrusion channel area and the more gas intrusion channels, the higher the maximum Mises stress of the casing and the worse the wellbore integrity. Through systematic analysis of the impact of the lack of cement sheath on the temperature field and stress...