Breaking Oil Recovery Limit in Malaysian Thin Oil Rim Reservoirs: Enhanced Oil Recovery by Gas and Water Injection

Abstract For mature fields, water injection is one of the widely deployed techniques to ensure continuous oil recovery from the reservoir by maintaining the reservoir pressure, oil rim and pushing the oil from injection to production wells. Thus, it is critical to ensure a continuous and reliable operation of water injection to have consistent and sustainable rate. This paper demonstrates the new approach, utilizing automation and digital technology providing operational improvement and reduction in unplanned production deferment (UPD). One of the methods to effectively manage the water injection operation is via automation of injection process, especially since most of the water injection facilities still rely heavily on manual operation. First, a discussion on typical water injection technique is discussed. Challenges and sub-optimal operation of water injection processes within the company and industry are analysed. Then, the designing of a fully automated water injection system, such as equipment availability and constraints in matching and responding to well injection requirement are demonstrated. While an immediate adoption of process automation to mature assets may be faced with challenges such as system readiness, hardware availability, capital investment and mindset change, a step-by-step approach such as guided operation and semi-auto operation is explored as preparation prior to a full automation roll-out. With the shift from manual operation reliance to automation, the response time to process changes is improved leading to reduction in near-miss and trip cases, and minimum unplanned deferment.

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Comprehensive review of carbonated water injection for enhanced oil recovery

Fuel ◽

10.1016/j.fuel.2018.08.106 ◽

2019 ◽

Vol 237 ◽

pp. 1086-1107 ◽

Cited By ~ 34

Author(s):

Cleverson Esene ◽

Nima Rezaei ◽

Amer Aborig ◽

Sohrab Zendehboudi

Keyword(s):

Enhanced Oil Recovery ◽

Oil Recovery ◽

Water Injection ◽

Comprehensive Review ◽

Carbonated Water Injection ◽

Carbonated Water

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Software Tool for the Study, Analysis and Evaluation of Enhanced Oil Recovery Processes

10.2118/spe-169917-ms ◽

2014 ◽

Author(s):

C. L. Delgadillo-Aya ◽

M.L.. L. Trujillo-Portillo ◽

J.M.. M. Palma-Bustamante ◽

E.. Niz-Velasquez ◽

C. L. Rodríguez ◽

...

Keyword(s):

Enhanced Oil Recovery ◽

Oil Recovery ◽

Water Injection ◽

Software Tool ◽

Steam Injection ◽

Hot Water ◽

Assessment Process ◽

Analytical Models ◽

Financial Assessment ◽

Recovery Processes

Abstract Software tools are becoming an important ally in making decisions on the development or implementation of an enhanced oil recovery processes from the technical, financial or risk point of view. This work, can be manually developed in some cases, but becomes more efficient and precise with the help of these tools. In Ecopetrol was developed a tool to make technical and economic evaluation of enhanced oil recovery processes such as air injection, both cyclic and continuous steam injection, and steam assisted gravity drainage (SAGD) and hot water injection. This evaluation is performed using different types of analysis as binary screening, analogies, benchmarking, and prediction using analytical models and financial and risk analysis. All these evaluations are supported by a comprehensive review that has allowed initially find favorable conditions for different recovery methods evaluated, and get a probability of success based on this review. Subsequently, according to the method can be used different prediction methods, given an idea of the process behavior for a given period. Based on the prediction results, it is possible to feed the software to generate a financial assessment process, in line with cash flow previously developed that incorporates all the elements to be considered during the implementation of a project. This allows for greater support to the choice or not the application of a method. Finally the tool to evaluate the levels of risks that outlines the development of the project based on the existing internal methodology in the company, identifying the main and level of criticality and define actions for prevention, mitigation and risk elimination.

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An Experimental Research on Enhanced Oil Recovery Using Local Polymers

10.2118/207130-ms ◽

2021 ◽

Author(s):

Abiola Oyatobo ◽

Amalachukwu Muoghalu ◽

Chinaza Ikeokwu ◽

Wilson Ekpotu

Keyword(s):

Enhanced Oil Recovery ◽

Experimental Research ◽

Oil Recovery ◽

Capital Investment ◽

Oil And Gas ◽

Produced Water ◽

Water Injection ◽

Gum Arabic ◽

Oil And Gas Industry ◽

Profile Control

Abstract Ineffective methods of increasing oil recovery have been one of the challenges, whose solutions are constantly sought after in the oil and gas industry as the number of under-produced reservoirs increases daily. Water injection is the most extended technology to increase oil recovery, although excessive water production can pose huge damage ranging from the loss of the well to an increase in cost and capital investment requirement of surface facilities to handle the produced water. To mitigate these challenges and encourage the utilization of local contents, locally produced polymers were used in polymer flooding as an Enhanced Oil Recovery approach to increase the viscosity of the injected fluids for better profile control and reduce cost when compared with foreign polymers as floppan. Hence this experimental research was geared towards increasing the efficiency of oil displacement in sandstone reservoirs using locally sourced polymers in Nigeria and also compared the various polymers for optimum efficiency. Starch, Ewedu, and Gum Arabic were used in flooding an already obtained core samples and comparative analysis of this shows that starch yielded the highest recovery due to higher viscosity value as compared to Ewedu with the lowest mobility ratio to Gum Arabic. Finally, the concentration of Starch or Gum Arabic should be increased for optimum recovery.

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Enhanced Oil Recovery and CO2 Storage by Carbonated Water Injection

Proceedings of International Petroleum Technology Conference ◽

10.2523/14070-abstract ◽

2009 ◽

Author(s):

Mehran Sohrabi ◽

Masoud Riazi ◽

Mahmoud Jamiolahmady ◽

Shaun Ireland ◽

Christopher Brown

Keyword(s):

Enhanced Oil Recovery ◽

Oil Recovery ◽

Co2 Storage ◽

Water Injection ◽

Carbonated Water Injection ◽

Carbonated Water

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Opportunity of Enhanced Oil Recovery Low Salinity Water Injection: From Experimental Work to Simulation Study up to Field Proposal

10.2118/164827-ms ◽

2013 ◽

Cited By ~ 10

Author(s):

Chiara Callegaro ◽

Martin Bartosek ◽

Franco Masserano ◽

Marianna Nobili ◽

Valerio Parasiliti Parasiliti Parracello ◽

...

Keyword(s):

Enhanced Oil Recovery ◽

Oil Recovery ◽

Simulation Study ◽

Experimental Work ◽

Water Injection ◽

Low Salinity ◽

Low Salinity Water ◽

Salinity Water ◽

Low Salinity Water Injection

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The effect of chemically enhanced oil recovery on thin oil rim reservoirs

Journal of Petroleum Exploration and Production Technology ◽

10.1007/s13202-021-01090-9 ◽

2021 ◽

Vol 11 (3) ◽

pp. 1461-1474

Author(s):

O. A. Olabode ◽

V. O. Ogbebor ◽

E. O. Onyeka ◽

B. C. Felix

Keyword(s):

Enhanced Oil Recovery ◽

Oil Recovery ◽

Niger Delta ◽

Surfactant Concentration ◽

Base Case ◽

Production Studies ◽

Water Alternating Gas ◽

Water Coning ◽

Oil Rim

AbstractOil rim reservoirs are characterised with a small thickness relative to their overlying gas caps and underlying aquifers and the development these reservoirs are planned very carefully in order to avoid gas and water coning and maximise oil production. Studies have shown low oil recoveries from water and gas injection, and while foam and water alternating gas injections resulted in positive recoveries, it is viewed that an option of an application of chemical enhanced oil recovery option would be preferable. This paper focuses on the application of chemical enhanced oil recovery to improve production from an oil rim reservoir in Niger Delta. Using Eclipse black oil simulator, the effects of surfactant concentration and injection time and surfactant alternating gas are studied on overall oil recovery. Surfactant injections at start and middle of production resulted in a 3.7 MMstb and 3.6 MMstb at surfactant concentration of 1% vol, respectively. This amounted to a 6.6% and 6.5% increment over the base case of no injection. A case study of surfactant alternating gas at the middle of production gave an oil recovery estimate of 10.7%.

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