{"title":"The Use of the Effective-Medium Theory and a 3D Network Model To Predict Matrix Damage in Sandstone Formations","authors":"Z. Khatib, S. Vitthal","doi":"10.2118/19649-PA","DOIUrl":"https://doi.org/10.2118/19649-PA","url":null,"abstract":"The size-matching technique and the effective-medium theory (EMT) were used to develop a model to predict the in-depth plugging of a formation core as a function of the solids particle size in the injection water. The pore-size distributions were determined with capillary pressure data (measured by the apparatus for pore examination (APEX)) rather than with the conventional capillary pressure curve. The morphology of the pore space was represented by a random 3D disordered network of pore bodies interconnected by pore throats. The absolute air permeability of the network was calculated with the EMT. The calculated permeabilities for Berea and Bentheim sandstones were compared with those calculated by the traditional bundle-of-capillary-tubes model and laboratory-measured values. In this paper a simple method is presented that relates the ratio of plugged to unplugged pore throats to the loss in permeability for a given matching pore-particle-size criterion. With the three particle-pore-pluging criteria, the reduction in permeability caused by matrix plugging was closely predicted as a function of the median diameter of the injected solids for a given concentration.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"27 1","pages":"233-239"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80698663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Single-trip tubing-conveyed perforating, production testing, and pressure-buildup testing in nonflowing wells","authors":"J. Barnes, P. Snider, C. V. Swafford","doi":"10.2118/18841-PA","DOIUrl":"https://doi.org/10.2118/18841-PA","url":null,"abstract":"This paper describes tools and procedures for tubing-conveyed perforating (TCP) and subsequent production testing of a well with a reverse-flow jet pump with a specially designed blanking sleeve. A downhole shut-in pressure buildup is also obtained and all equipment is pressure-actuated, eliminating the use of wireline.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"95 1","pages":"199-203"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74052178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Activity of sulfate-reducing bacteria under simulated reservoir conditions","authors":"J. Rosnes, A. Graue, Lien Torleiv","doi":"10.2118/19429-PA","DOIUrl":"https://doi.org/10.2118/19429-PA","url":null,"abstract":"This paper reports on sulfate-reducing bacteria (SRB) that have been isolated from hot oilfield waters from subsea oil reservoirs in the North Sea. Experiments with these bacteria in a reservoir simulator indicate that SRB may maintain their activity in the conditions found in most North Sea reservoirs and, if precautions are not taken, may contribute to souring of the oil and gas.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"92 1","pages":"217-220"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85672335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of Alkylnaphthalene Absorption Oil as a Sulfur Solvent in Sour-Gas Wells","authors":"G. Wilken","doi":"10.2118/19813-PA","DOIUrl":"https://doi.org/10.2118/19813-PA","url":null,"abstract":"This paper reports on elemental sulfur which is soluble in sour gas and often precipitates in sour-gas wells during production. Prevention of sulfur deposition in the production equipment requires the application of a sulfur solvent. An aqueous alkaline solvent is inadequate at increasing formation-water inflow resulting in severe carbonate precipitation. The new solvent is based on a mixture of alkylnaphthalenes diluted in a mineral oil. Both can combine physically with the precipitated sulfur. The performance of the solvent during circulation, its regeneration, and its behavior in corrosion inhibition is outlined. Application of this solvent improved the production of the treated sour-gas wells.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"153 1","pages":"137-141"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77664733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Slug-Length Distribution Law for Multiphase Transportation Systems","authors":"M. Bernicot, J. Drouffe","doi":"10.2118/17864-PA","DOIUrl":"https://doi.org/10.2118/17864-PA","url":null,"abstract":"This paper reports on a probabilistic approach which is used to analyze the formation of slugs in nearly horizontal pipelines. Knowledge of the probability amplitude for a liquid bridge in the formation zone allows derivation of the slug-length distribution law. The method is suitable for simulating complex situations, including unsteady flows. For horizontal steady flows, a simple model of this probability, expected to be valid in large-diameter pipes or for long slugs (tail of the distribution), yields a Gaussian law, which is distinct from the log-normal law. Frequency, mean length, and variance depend on only one parameter, which may be predicted from theoretical study (not included here). This new length distribution law is verified against experimental data obtained with an air/water test loop (42 mm in diameter and 400 m long) installed in the Beauplan production laboratory in France and is compared with the log-normal distribution law.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"31 1","pages":"166-170"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88260508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reliability Management of Surface-Controlled Subsurface Safety Valves for the TOGI Project","authors":"E. Moines, M. Iversen","doi":"10.2118/20875-PA","DOIUrl":"https://doi.org/10.2118/20875-PA","url":null,"abstract":"This paper describes Norsk Hydro and SINTEF's efforts to obtain higher reliability of surface-controlled subsurface safety valves (SCSSV's) for the Troll-Oseberg gas-injection (TOGI) project. Because of the severe consequence of system failures, reliability management was fully implemented on the TOGI subsea production system. The methodology used combines reliability theory with operating experience. Data bases with relevant field data, design review techniques, valve prototype testing, and review of test results are other elements of the reliability management program. Although this specific application was for SCSSV's, the methodology presented in this paper can easily be applied to systems where the consequence of failure is severe.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"268 1","pages":"181-186"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75774368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Artificial lift with coiled tubing for flow testing the Monterey formation, offshore California","authors":"Peavy, R. A. Fahel","doi":"10.2118/20024-PA","DOIUrl":"https://doi.org/10.2118/20024-PA","url":null,"abstract":"This paper provides a technical comparison of jet-pump and nitrogen lift during the drillstem tests (DST's) of a low-gravity, high-viscosity crude on a semisubmersible drilling vessel. Eight DST testing sequences are presented to demonstrate that jet-pump-lift operations are better suited than nitrogen-lift techniques for obtaining reservoir data during Monterey DST's.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"51 1","pages":"142-146"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78291695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Causes of Blown Port Plugs","authors":"G. King, B. R. Packard","doi":"10.2118/18988-PA","DOIUrl":"https://doi.org/10.2118/18988-PA","url":null,"abstract":"We suggest that a short-lived axion-like particle {eta}{sub 6} with mass around 30 GeV should be produced diffractively at hadron colliders. This is the lightest particle belonging to a new color- sextet quark sector of QCD which could be responsible for dynamical symmetry breaking of the electroweak interaction.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"41 1","pages":"187-194"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77668205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The dynamic two-fluid model OLGA; Theory and application","authors":"K. Bendiksen, Dag Maines, R. Moe, S. Nuland","doi":"10.2118/19451-PA","DOIUrl":"https://doi.org/10.2118/19451-PA","url":null,"abstract":"Dynamic two-fluid models have found a wide range of application in the simulation of two-phase-flow systems, particularly for the analysis of steam/water flow in the core of a nuclear reactor. Until quite recently, however, very few attempts have been made to use such models in the simulation of two-phase oil and gas flow in pipelines. This paper presents a dynamic two-fluid model, OLGA, in detail, stressing the basic equations and the two-fluid models applied. Predictions of steady-state pressure drop, liquid hold-up, and flow-regime transitions are compared with data from the SINTEF Two-Phase Flow Laboratory and from the literature. Comparisons with evaluated field data are also presented.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"50 1","pages":"171-180"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77609499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Small-particle-size cement","authors":"David P. Ewert, S. Almond, W. M. Bierhaus","doi":"10.2118/20038-PA","DOIUrl":"https://doi.org/10.2118/20038-PA","url":null,"abstract":"Successful remedial cementing has historically been difficult in wells with large-interval, multizone, gravel-packed completions. The reason is the inability of conventional oilfield cements to penetrate gravel packs adequately. Small-particle-size cement (SPSC) was developed to penetrate gravel packs and to provide the zonal isolation required. This paper details the laboratory work, job design, and field implementation of this new cement.","PeriodicalId":22020,"journal":{"name":"Spe Production Engineering","volume":"182 1","pages":"213-216"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80316843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}