We investigate the possibility that brine could be displaced upward into potable water through wells. Because of the large volumes of CO2 to be injected, the influence of the zone of elevated pressure on potential conduits such as well boreholes could extend many kilometers from the injection site—farther than the CO2 plume itself. The traditional approach to address potential brine leakage rel...

Nowadays heat pump water heater becomes a very hot topic in hot water industry. However it still has many problems such as higher condensing temperature, large-scale operation conditions and lower COP in cold regions. Based on these problems, the paper presents a prototype assembled with a two-stage rotary compressor which can be used in cold regions. The working principle and the basic feature...

In recent years, the number of new wells has been increasing continuously, which a large impact on production. During drilling pass, formation pressure dropped greatly, casing loss rate is high, and water cut increased, affects overall development situation Zone A. this paper, by studying rule index change in process off periodic injection, technology combining injection formed, application A c...

In the process of water injection development in low-permeability and extra-low-permeability oil fields, absorption capacity wells continues to decline, number under-injection is increasing, which affects effect fields. this paper, we take X oilfield as an example carry out single-well pressurized tests determine range reasonable pressure for geological conditions suitable injection. Through pr...

Fluid flow in most of geothermal reservoirs is dominated by fractures and their distribution. In this study, the following process of cold water injection into a fractured geothermal reservoir is considered: the cold water from a injection well advances along the fractures and gradually extract heat from the adjacent rock matrix, and eventually arrives at a production well. Both analytical and ...

In today’s society, with the continuous growth of energy demand, Bohai Oilfield, as an important offshore oil resource base in China, is facing increasingly severe challenges while contributing to national security. order improve quality water injection oilfield and gradually achieve efficient stable production, Oilfield has launched a well pressure optimization project, focusing on improving e...

We present new laboratory observations of an advancing boiling front radiating from an injection point in a simulated geothermal reservoir. The Berea sandstone model is a 26 cm cube that is either heated to a dry 125°C, or saturated with 145°C steam in two separate testing configurations. Cool water is applied at the sample center, and the advancing boiling front is identified by a radial array...

Displacement of oil and water in porous media of reservoir rocks is described by relative                      permeability curves, which are important input data for reservoir performance simulation and drive mechanism studies. Many core studies, such as multiphase relative permeability, capillary pressure and saturation exponent determination, depend on the volume fractions of multiphase flui...

In a companion paper [Taron J, Elsworth D, Min K-B. Numerical simulation of thermal–hydrologic– mechanical–chemical processes in deformable, fractured porous media. Int J Rock Mech Min Sci 2009; doi:10.1016/j.ijrmms.2009.01.008] we introduced a new methodology and numerical simulator for the modeling of thermal–hydrologic–mechanical–chemical processes in dual-porosity media. In this paper we ut...