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Keywords: wellbore
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Proceedings Papers

Paper presented at the Annual Technical Meeting, June 13–17, 1999
Paper Number: PETSOC-99-58
... oil reservoir oil recovery drilling system surfactant solution fracture gas jet hydratherm spallation hydrojet wellbore upstream oil & gas hydrocarbon sagd enhanced recovery oil sand reservoir crude oil reservoir characterization drilling fluid flow rate steam-assisted gravity...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 13–17, 1999
Paper Number: PETSOC-99-51
... with burners resulted in two failures. Cyclic in situ combustion proved nonetheless to be a successful application to consolidate the formation sand around the wellbore and increase the oil production significantly. Introduction The Patos-Marinza Oilfield is an onshore field located east of the city...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 13–17, 1999
Paper Number: PETSOC-99-60
... water saturation calculation wellbore permeability bvw porosity log analysis well logging fracture height fracture fluid fracture stimulation mesh sand injection rate hydraulic fracturing reservoir proppant upstream oil & gas irreducible water saturation ABSTRACT Most fracture...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 13–17, 1999
Paper Number: PETSOC-99-18
... liner crude sand transport pressure gradient production logging loading wellbore particle oil water flow horizontal section deposition velocity production control ABSTRACT Husky Oil Operations Limited (Husky) has substantial undeveloped heavy oil resources in the Aberfeldy General...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 13–17, 1999
Paper Number: PETSOC-99-53
... complex transient effect of draw down and increase of the physical length of the well, the calculated reservoir parameters are almost unique. Due to the increase of the wellbore length, there is almost a continuous pulse reaching the upper and lower boundaries. Thus the solution is very sensitive to the...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 13–17, 1999
Paper Number: PETSOC-99-77
... wellbore liquid, while adding additional fluid at a controlled rate through the annulus. Typically, pulsing is continued for 8–12 hours, after which the well is placed back on production. To date (March 15, 1999), over 25 workovers have been performed in the following fields: Lloydminster, Lindbergh...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–9, 1998
Paper Number: PETSOC-98-73
... Abstract It is a well-known fact in the petroleum industry that thermal treatment (wellbore heating) could result in significant benefit to the producing wells by remedying fluid related problems. Recently, it bar been shown in the literature that thermal stimulation also improves fluid flow...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–9, 1998
Paper Number: PETSOC-98-88
.... directional drilling hydraulic fracture gas deliverability fracture flow regime horizontal well analytical model wellbore horizontal section tight gas reservoir mfhw hydraulic fracturing permeability drilling operation gas production forecast upstream oil & gas deliverability equation...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–9, 1998
Paper Number: PETSOC-98-53
... injection pressure for hydraulic fracturing initiation. Introduction Hydraulic fracturing in formation near a wellbore is assumed to occur when the minimum principal effective stress becomes zero given that the tensile strength of the formation is small 1 . The definition of effective stress is given as...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–9, 1998
Paper Number: PETSOC-98-71
... applying the rate dependent skin analysis to a fractured well is that the rate dependent skin was developed based on the assumption of radial homogeneous flow into the wellbore. By adding a hydraulic fracture the flow regime has been altered and the theory breaks down. It is unclear whether the rate...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–9, 1998
Paper Number: PETSOC-98-17
... eventually into the wellbore, up the tubing string, and through well head assembly. At any point in this route, the minerals have the opportunity to come out of solution and deposit The deep high pressure wells typical of Iranian oil fields (carbonate reservoirs) are particularly subject to scale formation...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–10, 1997
Paper Number: PETSOC-97-132
... limited by top, bottom, and no-flow barrier. The wellbore is modeled as a superposition of Source Functions (SF) such that in each inner reservoir point these functions satisfy Laplace equation in case of stationary drainage or heat equation in the non-stationary case; the boundary conditions are...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–10, 1997
Paper Number: PETSOC-97-107
... in western China. Introduction Horizontal wells have been widely used in petroleum industry [1][2] because they have higher economic efficiency and advantages over vertical wells such as controlling sand, delaying gas or water coning and preventing turbulent flow around the wellbore etc.. They...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–10, 1997
Paper Number: PETSOC-97-54
... intermediate shut-in times (after wellbore storage effects diminished) and then trended downward. This curve shape indicates lower mobility near the wellbore and increased mobility some distance away. Using conventional interpretation techniques, this pressure derivative response may be interpreted...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–10, 1997
Paper Number: PETSOC-97-133
... horizontal well could be partially blocked due to the deposition and accumulation of sand particles inside the wellbore. This study presents a mathematical treatment of the transport process of oil and sand particles inside a constricted horizontal well. The model described in this paper formulates the...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–10, 1997
Paper Number: PETSOC-97-33
.... The solutions have not been published previously in the petroleum engineering literature. The solutions are presented for drawdown and buildup tests. The model assumes flow of gas condensate from a tight matrix into permeable natural fractures. The fractures conduct the fluids to the wellbore. It is...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–10, 1997
Paper Number: PETSOC-97-19
... sweep efficiencies in displacement recovery processes. The extended contact also means that the behavior of horizontal wells _ in terms of the flow into, and inside them _ will have a significant impact on reservoir recovery performance. As such, wellbore hydraulics cannot be ignored in reservoir...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 7–10, 1997
Paper Number: PETSOC-97-88
.... Field and laboratory tests have indicated that coincidental to expansion of air across bit-nozzles is the formation of water droplets which accumulate in the wellbore and along the walls of the drill-pipe and hole. The presence of this free-water can become a source of error in studies of the pneumatic...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 9–11, 1996
Paper Number: PETSOC-96-91
... in the fracture. Introduction An interesting method for assessing the dimension of a downhole hydraulic fracture was introduced by Holzhausen and his co-authors 1,2 . The method was based on the phenomenon that the existence of a hydraulic fracture along the surface of a wellbore would alter the...
Proceedings Papers

Paper presented at the Annual Technical Meeting, June 9–11, 1996
Paper Number: PETSOC-96-79
... 0.005 ft/vmin), it can cause early sand-off where only 20–80% of a fracture design is placed. This high leak-off can be attributed 10 two factors: high reservoir permeability or. induced shear fracturing near the wellbore. Reservoirs with permeabilities greater than 100 md have been successfully...

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