Analysis of Steam-Injection (Small-and Large-Scale Projects) Production Wells in Wafra Oil Fields

Determinion of the utility of and specifications necessary for using steam injection to enhance the recovery of heavy oil in Kuwait’s Wafra oil fields.

As the Kuwait Petroleum Corporation (KPC) pursues the nation's goal of producing 4 million barrels of crude oil per day by 2020, it must address the growing challenge of capturing harder to produce heavy oil. One promising technology uses steam flooding to enhance oil recovery. Responding to the challenge, KISR's researchers in cooperation with Saudi Arabian Texaco, Inc., launched four pilot-scale steam flooding sites in Kuwait’s Wafra oil fields. The oil and gas compositions were analyzed for hydrocarbons, asphaltenes, heavy metals and sulfur content.

The produced water generated by the steam injection was also analyzed to determine the amount of suspended solids and other contaminants.

The study found steam flooding was a very promising, effective method for enhancing heavy oil production. The research provided a better understanding of the suitability of the thermal process on a pilot scale and KISR's researchers recommended proceeding with the design of a large-scale steam-injection pilot project.

Evaluation of Sulfate-Reducing Bacteria in Effluent Waters, Phase I

Determination of the most effective biocide treatment regime for the Kuwait Oil Company’s (KOC's) Effluent Water Disposal Plant-1 (EWDP-1) in order to reduce the presence of bacterial activity that sours oil reservoirs and corrodes oil pipelines.

The presence of sulfate reducing bacteria (SRB) is a serious problem for Kuwait’s oil industry as it often causes microbiologically induced pipeline corrosion and oil-reservoir souring. Much of the water stored at oil production sites contains amounts of SRB that are detrimental to the integrity of the oil-production industry. 

In order to address this concern, KOC and KISR initiated a project to evaluate the performance of conventional commercial biocides to remove SRB. They conducted studies to optimize the chemicals used in these biocides to determine the appropriate levels necessary to remove the bacteria. The researchers then determined that the biocide treatment reduced the presence of SRB significantly, but found that a considerable level of the bacteria remained. They recommended that the regime be continued regularly and accompanied by a thorough monitoring program to address SRB build up as it occurred.

Assessment of Reservoir Response to Aquifer Water Injection

Wara Pilot Project

Petroleum Production Department, Petroleum Research and Studies Center,

Kuwait Institute for Scientific Research

Abstract: Researchers at KISR’s Petroleum Center recently performed an assessment on the Wara reservoir evaluating the effectiveness of water injection as part of an EOR strategy to optimize oil production. The project assessed the chemical composition of the produced water and the optimal dosage levels of chemicals in order to realize the most favourable treatment.

Assessment of Enhanced Oil Recovery (EOR) Techniques for Fifteen Selected Kuwait Reservoirs

Petroleum Production Department, Petroleum Research and Studies Center,

Kuwait Institute for Scientific Research

Abstract:  To meet its goal of increasing domestic oil production to 4 mbd by 2020, the Kuwait Oil Company (KOC)  will need to utilize the best of available technologies to extend and enhance the production life of current mature reservoirs. The KISR researchers were asked to perform an analysis testing the viability of several of the most promising enhanced oil recovery (EOR) techniques on 15 Kuwaiti reservoirs. The EOR screenings were performed on the selected reservoirs against 12 different EOR techniques. The results, although strongly dependent on the quality and accuracy of the reservoir data, showed that five of the selected reservoirs were good candidates for carbon dioxide (CO2), hydrocarbon (HC), and nitrogen (N2) miscible floods. In the second stage the ultimate recovery for the five reservoirs was assessed using modelling and simulation data.  The results indicated that CO2 miscible flooding gave the best recovery mechanism over the HC and N2 miscible flooding, sometimes as high as 4-6 times compared to the current mechanism.

Assessment and Control of Water Quality Parameters in Seawater Injection System (North Kuwait)

Department of Petroleum Production, Petroleum Research and Studies Center,

Kuwait Institute for Scientific Research

Abstract:  Seawater techniques are being used to maintain the pressure in many of Kuwait’s oil fields. The system of water injection, especially through the pipelines, is vulnerable to contamination by significant concentrations of suspended solids from corrosion products generated as a result of low levels of oxygen entering the transfer line. This becomes a problem when sulphate reducing bacteria, colonized near the well-bore of the injectors and beyond, produce hydrogen sulphide which will inevitably sour the Raudhatain and Sabriya fields.

KISR researchers were tasked to perform an assessment of water quality parameters in the seawater injection system. The main objectives of the project were to determine the total amount of solids recovered as a function of Total Suspended Solids (TSS), monitor the quality of the treated seawater from the process plant, and determine the bacterial populations in both pigging water and solids using serial dilution techniques in microbiological growth medium. 

The project determined that bacteria have colonized the system to such an extent that infestation now continues up to, and presumably beyond, the injecting wells. The bacteria have formed deposits in the pipeline that have led to excessive corrosion rates under the deposit. These deposits harbor bacteria allowing them to thrive and proliferate as sessile colonies. Therefore, the current pigging frequency is inadequate, and must be increased if there is any possibility of maintaining the integrity of the system. 

Effects of Wellstream Treatment Chemicals on Polymeric Matric Composite Materials Used in the Kuwait Oil Field Environment

Polymeric Products Enhancements Customization Program, Petroleum Research Center

Abstract: This service was focused on the environmental effects of oil field treatment chemicals on reinforced thermosetting resin pipe (RTRP) and high performance thermoplastics used in downhole sealing operation. In Kuwait, RTRP finds applications in oily water lines, aviation fluid; also, a test crude oil flowline was only recently constructed at Kuwait oil Company (KOC).