... injected fulfil the production ability needed to prevent any reservoir pressure unbalance. The water alternating gas (WAG) method is the technique to improve oil recovery by injecting water to enhance sweep effectiveness. If gas is being injected into this technique, the viscosity of the oil...

... the shortcomings of current API standards and identifies what effects contributing factors such as pipe eccentricity and drill pipe rotation rates may have on cuttings transport efficiency. Further, this paper discusses the impact pipe-to-hole area ratio and wellbore flow area have on the effects of drill pipe...

... their seats after production was initiated. Additional assumptions related to the effectiveness of the activation ball sealing, and the effectiveness of the open-hole packers were also necessary due to the absence of pressure data from below the targeted interval during frac operations. If any significant...

... Previous studies in the basin compared the effectiveness of a ball/sleeve method versus "plug & perf" technique 2 . The majority of these analyses have been inconclusive 1 due to the lack of the requisite amount of data to obtain statistically significant results. Thus, a single test...

... completions in lower-permeability reservoirs. production rate infield well acid horizontal completion hydraulic fracturing lateral perforation horizontal section stimulation ohlc method completion installation and operations economic spe 76725 effective stimulation fracture reservoir spe...

... of the methods used and the results achieved are included. stimulation society of petroleum engineers effectiveness profile control dual injection line vertical coverage injection rate saturation upstream oil & gas packer injection injector disadvantage waterflooding thief sand sand...

... feet of perforated sandstone taking water injection, modified to account for uniform or nonuniform vertical distribution. The index is independent of total completion interval, allowing comparison of wells with differing net pay. The index is used to evaluate cost effectiveness of the workovers...

... ABSTRACT Multiple radioactive tracers have recently been used by Santa Fe Energy to assess the effectiveness of acid and fracture stimulations. Until recently, only one radioactive tracer 1 , usually Iridium–192, was used and its distribution was surveyed with a conventional gamma ray logging...

... and formulation production monitoring society spe paper production control petroleum engineer experiment reservoir characterization drilling fluid chemistry bpd interval effectiveness INTRODUCTION Formation damage in the the vicinity of the wellbore is a major cause of low productivity 1 – 6...

.../D (191 m 3 /d). Injection of 1293 M barrels (205570 m 3 ,or .96 pore volume) of a middle molecular weight polymer (Polyacrylamide) which has been shown to be an effective mobility control agent. Average injection rate was 2000 B/D (318 m 3 /d). Injection of produced water to economic limit...

... proposed and in some cases tested and used in many oil field operations. Most of these applications require that the materials be effective over extended periods of time and some also require that they work periods of time and some also require that they work at elevated temperatures. The latter may range...

... the injectivity behavior of this polymer. Recent publications show that treatment of XANFLOOD solutions with certain enzymes will solubilize cellular debris and improve injectability. To study the effectiveness of this treatment, injectivity tests were Performed in a series of Berea cores Performed in a series...

... the well. This paper describes a procedure for treating such formations with hydroxyaluminum to stabilize clay minerals and thereby prevent sand and silt production. Hydroxy-aluminum is a relatively inexpensive and commercially available chemical that very effectively inhibits clay damage in References...

... of production of viscous crude oils, the USBM made a study of solvents to stimulate production, Five laboratory methods were used to evaluate the effectiveness of several solvents in the stimulation of viscous oil production, These methods were (1) viscosity reduction, (2) gravity drainage production from sand...

... to the Society of Petroleum Engineers office. Such discussion may be presented at the above meeting and considered for publication in one of the two SPE magazines with the paper. Abstract The development of efficient low water loss additives has greatly improved the effectiveness of squeeze cementing...

... proved that a system of 50 mm liquid cyclones is an effective means of remOving undesirable lowgravity solids and reclaiming barites from weighted muds. Field operation has confirmed laboratory tests which indicate that routine cyclone treatment of weighted mud reduces barite requirements from 45 to 80...