... pressure experiment retention injection Oil Recovery reservoir injectivity flow in porous media polymer oil reservoir porous sample polymer solution permeability Introduction Polymer flooding is an enhanced oil recovery method where high a molecular weight hydrophilic polymer is added...

... reduction Directional Drilling Fluid Dynamics skin factor chemical diversion Completion Installation and Operations Upstream Oil & Gas flow distribution perforation distribution post-treatment skin reduction diverter stage permeability permeability distribution openhole completion flow...

... fluid permeability drilling fluid formulation completion flowback sample calcium carbonate injection well reservoir drilling fluid cleanup starch injectivity drilling fluid management & disposal fluid loss flowback filter cake agent Introduction The Captain Field 1...

... agent for low density fluids, and manganese tetroxide (Mn 3 O 4 ) was used for high density fluids. All fluids were prepared using a multimixer, and the fluid viscosity was examined with a direct-indicating viscometer. Return permeability testing was conducted on both a lower permeability Kirby...

... and the favorable tubular friction reducing characteristics of guar-based fluid systems makes them a desirable option for fracturing fluid systems. However, water insoluble residue resulting from guar-based systems may significantly impact the permeability of the proppant pack when flowing back and producing...

... Abstract Over the years, sandstone acidizing has experienced low success rate. This makes it essential to develop a systematic method for selecting the optimum hydrofluoric acid (HF) concentration, which can achieve the highest possible permeability enhancement. Field experience...

... propped width of 1.3 cm (0.51 in). The large width was needed to achieve sufficient fracture conductivity for the expected reservoir permeability and to minimize convergent flow pressure drop in the fracture, due to the short perforated interval that was used. A very short perforated interval was used...

... to determine how long formate would be in contact with the near wellbore and this demonstrated that, especially for the lower permeability intervals, a contact time of approximately 45 days was a possibility. In light of this, a sequence of corefloods was performed involving extended soaks in formate along...

... the performance of bean-up strategies. For vertical wells producing from multiple layers, bean-up strategies should be selected with respect to the effective horizontal permeability, ultimately yielding the greatest pressure gradient reduction in the low permeability zones. The proposed method enables engineers...

... Abstract The interpretation of well performance in propped fractured tight gas reservoirs is a topic that has been studied for decades, but still presents a number of difficulties. These issues are becoming more important as unconventional reservoirs with even lower permeabilities are developed...

... Abstract Coal seam gas (CSG) production involves water flow through coal cleats. Creep effect and fines migration can cause a severe damage to coal permeability during water flow. This study presents a systematic methodology to analyze coupled effect of creep and fines migration in a water...

... flooding using high-salinity (formation) and low-salinity (river) water. Two plugs were taken with the clay content of about 0.8% and 0.1% and the permeabilities of 432 and 291 mD, respectively. Dead oil was used with the viscosity of 37.5 mPa.s. TDS values were about 252,738 ppm for high-salinity water...

... fracturing fluid concentration fracture conductivity hydraulic fracturing Fluid Dynamics natural fracture gel-damaged zone breaker concentration proppant residue gel damage gel flow in porous media fracture permeability reservoir Upstream Oil & Gas interaction Simulation damage effect...

... formation damage external filtercake permeability reservoir containment fractured injection enhanced recovery permeability fracture growth injection well Injection Rate external filtercake Introduction Many waterfloods in the operating phase are not performing as expected. One of the (main...

... drillstem/well testing deviation formation damage Byrne wellbore geometry perforation vertical well hydraulic fracture reservoir Drillstem Testing fracture face pressure drop skin factor fracture society of petroleum engineers completion installation and operations permeability...

... Remediation hydrate inhibition asphaltene inhibition scale inhibitor dissolution phosphonate application retention reservoir permeability test 2 Introduction Calcium carbonate scaling was identified in Talisman Malaysia's area wells, necessitating scale removal intervention treatments. Scale...

... quality CP well perforation enhanced recovery injection pressure Simulation geometry injection Karaka reservoir Upstream Oil & Gas concentration internal damage drilling damage injectivity Completion Installation and Operations cake geometry flow rate cake permeability matrix...

... Abstract Hydraulic fracturing is used extensively to develop oil and gas wells in both high and low-permeability formations. Biopolymer-based fluids, including guar or guar derivatives, constitute the majority of polymers in fracturing fluids. These polymers cause formation damage, which...

... Abstract The new method to assess permeability damage in geothermal reservoirs and predict well productivity decline is presented. The laboratory methodology developed aims to determine permeability decline from mobilisation, migration and straining of natural reservoir fines. Laboratory...

... Abstract Formation Damage caused during drilling can have a significant impact on the near wellbore and the ability for a well to deliver to design. The reduction in near wellbore permeability is generally interpreted as a negative and the damage is normally minimised through careful selection...