... is provided. Different analytical formulations and simulation models were used to analyze the results of the field test and the analyses were compared to prior published work. Field results were also used to determine effective thermal conductivities and effective mobilities at low temperatures for different...

... has also devel- oped electro-thermal approaches for bitumen recovery. The heat transfer mechanisms, either from horizontal or vertical wells, associated with the electro-thermal ap- proach distinguishes the various methods. In some of the approaches, heat transfer by conduction is the dominant method...

... fracture acid hydraulic fracturing fracture conductivity fracture length contact time productivity ratio fracture half length fracture propagation model fracture geometry fracture height dimensionless conductivity upstream oil & gas equation injection rate conductivity acid...

... can form short and wide fracture with high conductivity, and it has good effect on restraining the excessive extension of fracture height. The technology has been applied successfully in China, and the stimulation effects were great. But the relevant theory on secondary sand fracturing is deficient...

... strength data, acid solubility, fracture fluid selection and mineral identification of a fractured tight gas carbonate reservoir. Basic to a successful acid fracture design are acid etching and rotating disc tests which show for a given acid system, conductivity at a given stress (etched width or how much...

... to casing, cement and formation. Heat transfer coefficient or Nusselt number at a depth were determined using a formula presented by K. Choukairy et al. 2) Equivalent heat conductivity of insulated tubings: Thermal performance of insulated tubings contain argon shield layer was evaluated by considering...

... Midale reservoir section consists of two main layers: dolomite-dominated Marly and vugular limestone, called Vuggy . Both strata contain systematic fractures, though the degree of fracturing varies. Numerous studies conducted on the field revealed some characteristics of the natural fracture network...

... wellbore model fluid dynamics drilling operation prediction interaction wellbore transmissibility reservoir flow equation influx pressure distribution well length flow rate traditional model reservoir simulation conductivity flow equation modeling & simulation fluid flow...

... fracture length flow in porous media point coordinate conductivity directional drilling daily production increase fluid flow horizontal well PAPER 2006-076 A New Model to Predict Fractured Horizontal Well Production J. Guo, F.Zeng ,J. Zhao State Key Laboratory of Oil and Gas Reservoir Geology...

... drillstem testing horizontal-well fracture wellbore diagnostic plot hydraulic fracturing fracture conductivity permeability flow regime drillstem/well testing early-time flow regime radial-linear flow non-darcy flow flow analysis square fracture flow period upstream oil & gas...

... permeability upstream oil & gas rectangular system flow regime reservoir regime horizontal line pseudosteady state flow regime fractured well conductivity derivative plot accuracy drillstem/well testing reciprocal rate straight line drainage area fracture conductivity...

... a shaly sand interpretations technique, referred herein as LSU model based on log data such as resistivity, spontaneous potential, neutron and density logs. This model is based on the Waxman and Smits 8 concept of supplementing water conductivity with clay counterions conductivity. It also utilizes...

.... Proppant Selection / Production Models The Cardium treatments in the study area are conducted at depths of 1750 to 2500 m (5700 to 8200 ft) and can exhibit high closure stress gradients. Typical stress on proppant during routine production can range from 24,000 to 40,000 kPa (3500 to 5800 psi). Figure 3...

... drillstem/well testing wet gas production monitoring capillary pressure cement channel cement diameter gas flow envelope production control scp equilibrium presentation gas well deliquification conductivity drillstem testing condensation hydrostatic pressure upstream oil...

... and/or oil. Both fracture length and conductivity are the critical factors controlling the stimulation effects in these reservoirs. Various limitations of hydraulic fracturing and great treatment risks have made acid fracturing more attractive and large numbers of field practices have verified its validity...

... wf production pressure drop matrix block matrix block model analytical solution wattenbarger hydraulic fracturing bilinear flow conductivity fracture half-length flow period upstream oil & gas fracture drillstem/well testing gas well reservoir simulation constant rate...

... fracture conductivity tight gas reservoir completion upstream oil & gas flow in porous media reservoir quality frac fluid stimulation water saturation conductivity reservoir hydraulic fracturing fluid dynamics dimensionless fracture conductivity porosity tight gas well...

... an analytical model for fractured horizontal wells in anisotropic closed or semi-infinite, homogenous or naturally fractured systems. Uniform flux, infinite conductivity and finite conductivity models are considered. The fractures may be of different properties and unequally spaced along the horizontal wellbore...

..., they have such drawbacks such as low fracture conductivity, unintended proppant bridging and subsequent proppant flow back. This paper presents the development of a new acid fracturing technique, Nitric Acid Powder (NAP) acid fracturing, to improve the acid penetration and fracture conductivity. The NAP...

... comprises of connected Sinusoidal Tubes (ST) radiating in the plane of x-y directions. Pore conductance: The hydraulic conductivity of a Sinusoidal Tube (ST) is given by: 1 2 10 4 1 32 ), 2 ' ( 2 )1( - ÍÎ È -+ = i k i k z h c cd dzG y m p 9) where k may alternatively be replaced with o or g...