Successful Conversion of the Pikes Peak Viscous Oil Cyclic Steam Project to Steamdrive

Miller, K.A.; Stevens, L.; Watt, B. J.

doi:10.2118/18774-ms

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…6 In 1984, a steamflood process was initiated as a follow-up process to CSS in an area in which interwell communication existed between several wells. 4 The excellent results led to the establishment of 3-ha inverted 7-spot patterns throughout the project (see Fig. 2).…”

Section: Development Historymentioning

confidence: 94%

Meeting the Challenge To Extend Success at the Pikes Peak Steam Project to Areas With Bottomwater

Wong

Anderson

O'Rourke

et al. 2003

SPE Reservoir Evaluation &Amp; Engineering

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This paper provides a field review of the Pikes Peak steam project, showing key performance indicators of cyclic steam stimulation (CSS) and steamdrive in non-bottomwater. To test development over relatively thin bottomwater (less than 5 m), various steam processes were given field trials. Field pilot results from vertical-well CSS, dual horizontal well gravity drainage, and a combination of vertical injectors/horizontal well producers are presented for comparison.Based on field experience and numerical simulation input, CSS has been conducted successfully with economic steam/oil ratios (SORs) in areas with up to 4 m of bottomwater by injecting significantly larger steam slugs in what is termed a drive, block, and drain process. In thicker bottomwater, the ability to operate at constant pressure to prevent bottomwater influx confers an advantage on the horizontal well approach. Follow-up field-scale developments of some bottomwater areas are described. Numerical simulation results indicate that pressuring up of a depleted steamflooded zone is an optimum strategy for maximizing offset flank recovery. This is being implemented in the field by reinjecting produced vent gases.

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Section: Development Historymentioning

confidence: 94%

Meeting the Challenge To Extend Success at the Pikes Peak Steam Project to Areas With Bottomwater

Wong

Anderson

O'Rourke

et al. 2003

SPE Reservoir Evaluation &Amp; Engineering

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Seismic characterization of thermal recovery processes at Pikes Peak

Hirsche¹,

Porter-Hirsche²,

Mewhort

et al. 1997

SEG Technical Program Expanded Abstracts 1997

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Experiences of Conversion from Cyclic Steam Strategy to Continuous Steam Strategy in Issaran Egypt Field

Basta¹,

Korany²,

Kortam³

et al. 2016

Day 2 Tue, March 22, 2016

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Heavy oil reservoir management using thermal methods is different than conventional reservoir management, especially if the reservoir is highly heterogeneous with limited availability of data. This raises a lot challenges to deal with.One of these important challenges is timing the conversion of the project from the cyclic steam injection phase to the continuous steam flooding strategy, which allows the steam to contact a larger area of the reservoir, and thus enhancing oil recovery, while optimizing voidage replacement ratio (VRR.) This on the long run increases the project lifetime economically.Issaran is one of those challenging heavy oil shallow fields in the Middle East, containing reservoirs with heterogeneous properties. Its different reservoirs are managed with different steam strategies. Cyclic steam injection started in 2004 in one of the reservoirs, after that the strategy was converted to continuous steam injection in addition to small cycles in some of the producers to improve communication. Different selected time scenarios of conversion were implemented for each area to enhance sweep efficiency and heat distribution and overcome any undesirable reservoir response such as water encroachment, and deal with highly fractured, highly heterogeneous or low pressure zones.In this paper, actual field performances will be presented for each formation showing the cyclic steam injection stage and the timing of conversion to continuous steam strategy. A lot of factors will be presented for the steam cycle stage including: voidage replacement ratio (VRR), steam to oil ration (SOR), and the injectivity index performance from cycle to cycle. Then the conversion time from cyclic to continuous steam flooding will be discussed per each area. The relationship between this time with total VRR and the total steam injected in the cyclic stage will be introduced. Spacing between the wells will be mentioned and its effect on the conversion time identified.Generally the main factors that affect directly on the selected conversion time: communication between the wells, injectivity index and economic factors. The paper will focus on the first 2 factors.

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Successful Conversion of the Pikes Peak Viscous Oil Cyclic Steam Project to Steamdrive

Cited by 4 publications

References 11 publications

Meeting the Challenge To Extend Success at the Pikes Peak Steam Project to Areas With Bottomwater

Meeting the Challenge To Extend Success at the Pikes Peak Steam Project to Areas With Bottomwater

Seismic characterization of thermal recovery processes at Pikes Peak

Experiences of Conversion from Cyclic Steam Strategy to Continuous Steam Strategy in Issaran Egypt Field

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