Auto, Natural, or In-Situ Gas-Lift Systems Explained

Vasper, Adam Charles

doi:10.2118/104202-pa

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…The use of control valves means that natural gas lift can be categorized in smart well technology. If the gas injection rate becomes more or less than an optimum rate the pressure gradient and the flowing bottom-hole pressure will increase and as a consequence, the oil rate will decrease (Vasper, 2006). In using a natural gas lift system the major problem is availability of a suitable gas source around the oil zone.…”

Section: Introductionmentioning

confidence: 99%

Real Time Optimization of a Natural Gas Lift System with a Differential Evaluation Method

Frooqnia

Pishvaie

Aminshahidy

2013

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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This article presents a method for optimizing and controlling an oil production system using a natural gas lift concept. Ever increasing development of Smart Well technology and various applications of down-hole monitoring and controlling instruments along with new methods of data acquisition/transmission make it possible for the natural gas lift system to be controlled and optimized more effectively and faster than before. With this technology it is possible to monitor the down-hole conditions of gas and oil zones and to control the inflow valves in gas and oil zones. In this work, a proportional integral differential feedback controller has been used to smartly control the entrance of gas from the gas zone to the oil well. The optimizer determines the optimal values of gas injection setpoint for the controller to manipulate the inflow of gas to the oil reservoir. The problem will be more complex when the available gas in the gas zone is limited. The optimization of this process has been done by a Differential Evolution method.

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Section: Introductionmentioning

confidence: 99%

Real Time Optimization of a Natural Gas Lift System with a Differential Evaluation Method

Frooqnia

Pishvaie

Aminshahidy

2013

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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“…Surface-operated downhole flow-control valves have been used before for the purpose of a natural-gas lift process in order to reduce the cost of artificial-lift infrastructure (Betancourt et al 2002). Automatic gas lift techniques have been used in the Scandanavian sector of the North Sea in more than 60 wells (Vaspar 2006). However, the application or investigation of intelligent-multilateral-well technology for simultaneous oil and gas development has been evaluated in this work using downhole control valves.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, it highlights the delay and reduction of excess production of unwanted fluids using IWT (Vaspar 2006).…”

Section: Introductionmentioning

confidence: 99%

Economic Comparison of Intelligent Wells in Simultaneous Production of Oil and Gas Reserves From Single Wellbore

Nagib

Ezuka

Nasr

2011

SPE Production &Amp; Operations

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Summary Maximizing oil recovery in thin and ultrathin (less than 30 ft) oil columns is a challenge as a result of coning or cresting of unwanted fluids into the wellbore in both vertical and horizontal wells. There is considerable oil left behind, above the well completion in the reservoir. This may also occur in horizontal wells when bottom- or edgewater encroachment or invasion takes place. The development of the gas resources from these reservoirs is a major challenge because regulators want an optimal development plan for the oil rim before project approval is made. This can delay upstream gas supply to liquefied-natural-gas (LNG) projects and grind down project value. A smart development strategy has been proposed for the development of these challenging reservoirs. This involves the use of intelligent multilateral wells in simultaneous oil and gas development; the first (top) horizontal-lateral-well legs of the multilateral well will be completed at the crest of the reservoir in the gas cap. The second (lower) horizontal-lateral-well leg will be completed just above the gas/oil contact (GOC). Extensive numerical reservoir-flow simulation has been used to demonstrate the ability and possibility of using a single wellbore for simultaneous oil and gas production. This proposed development strategy will provide high impact on the asset of such oil and gas reservoirs by providing a cost-effective-technology solution. The numerical-simulation results show that the intelligent multilateral well will significantly improve the overall cumulative production of gas and oil from a thin oil reservoir with a large gas cap compared with conventional wells and also provide the opportunity for automatic gas lift for low-gravity crude (°API). This paper (1) presents the use of intelligent multilateral wells to produce oil and gas from the same wellbore simultaneously in the thin oil reservoir and (2) provides information on the delay and reduction of excess production of unwanted fluids (water) during oil and gas production from thin oil reservoirs using intelligentwell technology, including cost effectiveness.

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An Approach Based on Neural Networks for Gas Lift Optimization

Ruz-Hernández

Salazar-Mendoza

et al. 2010

Soft Computing for Recognition Based on Biometrics

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Auto, Natural, or In-Situ Gas-Lift Systems Explained

Cited by 9 publications

References 3 publications

Real Time Optimization of a Natural Gas Lift System with a Differential Evaluation Method

Real Time Optimization of a Natural Gas Lift System with a Differential Evaluation Method

Economic Comparison of Intelligent Wells in Simultaneous Production of Oil and Gas Reserves From Single Wellbore

An Approach Based on Neural Networks for Gas Lift Optimization

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