A project spearheaded by ExxonMobil, Shell, Chevron, and the Southwest Research Institute (SwRI) has been established to advance separation technology through improved testing methods and collaboration between users and suppliers. The simplest way to measure return on investment for an offshore water treatment system is to determine whether using the system actually reduces the risk of paying a fine for violating water pollution laws.
From the highest courts of the US judicial branch to the C-suite, contests involving patents have recently come to the fore in the innovation hungry US oilfield services industry, even as filings and litigation have declined in recent years. Seeking out, experimenting with, and ultimately embracing technologies from other industries have proven crucial to innovating at oilfield service firms such as Halliburton, which has tried everything from dog food to submarine tech to improve its work downhole. R&D may be the key to the survival of companies as the new economics of the industry take hold. The R&D Technical Section dinner at ATCE drew varying perspectives as the panelists discussed, and sometimes debated, a range of approaches to safeguarding industry viability and growth in the years ahead. Even as the oil and gas industry looks for the next great idea to propel it forward, it should constantly reconsider past innovations for inspiration, the CEO of a major operator said Monday on the opening day of 2017 SPE ATCE.
Hydrocarbon processing and treating systems often require large and elaborate surface facilities. When operating in challenging locations, such as deep water or the Arctic, these systems can be expensive. This paper bridges the gap between operational petrophysicists and FTS specialists, introducing an automated work flow by which petrophysicists can conduct FTS jobs.
The launch will make Shenzhen Gas the second Chinese city gas distributor backed by a local government to own an LNG import facility, following Shenergy Group’s Shanghai import terminal. Eni is set to deliver an initial cargo to the facility. ADNOC and CNOOC will explore multiple new opportunities for collaboration across the upstream and downstream sectors in the UAE and China. Louisiana state granted a tax incentive to LNG Ltd. for its Magnolia project in Lake Charles. The escalation of the trade war between the US and China could jeopardize several LNG megaprojects that are awaiting final approval.
The development of CO2 separation technologies will enable the monetization of undeveloped gas fields with a high level of CO2, thus providing commercial enterprises a superior competitive edge for future international field acquisitions. The cryogenic distillation system has been identified as one of bulk CO2 separation technologies for high CO2 removal from natural gas. It is a more favourable CO2 separation technology than chemical or physical absorption due to its independence from absorbents, which require a greater footprint, weight and energy. It is targeted for bulk CO2 removal from the natural gas stream 80% down to 20%, and it must be efficient and cost-effective to ensure that the overall economics of a development are positive.
In-house process simulation software was used to model a cryogenic distillation column system, while an experimentally validated thermodynamic model was used to verify the phase behaviour of the components, potential CO2 solidification and hydrate formation at the operating pressure and temperature conditions. This modelling encompassed critical operating conditions such as high operating pressure and low operating temperature. This is crucial especially at lower temperature and blowdown condition to prevent piping and equipment blockage which might lead to catastrophic equipment failure.
A pilot scale cryogenic distillation unit was studied in this paper with pre-mixed feed consists of CO2 and natural gas to investigate separation performance as well as to examine the operational aspects of the technology. Efforts should be made to reduce energy consumption for such applications. In this paper, pinch analysis tool is utilized to analyse and optimized the Heat Exchanger Network (HEN) of the Cryogenic Distillation System for bulk CO2 separation. Column operating pressure, condenser and reboiler temperatures and feed conditions were varied to examine the effect on energy consumptions and for comparison with process simulation results. It was found that condenser duty decreased by 50% while reboiler duty increased by 100% when operating pressure was increased from 35 bar to 50 bar to achieve the same product specification. Substantial energy reduction for external cooling was attained through pinch technology by taking advantage of the Joule-Thomson effect when expanding high pressure liquid CO2 stream to a lower pressure. Optimal operating conditions, the effect of impurities and alternative refrigeration systems are identified as current gaps in this study.
Operational issues were identified and mitigated in this study, which will further the understanding and scaling-up of commercial plants, particularly blowdown study and CO2 solid and hydrate formations and potential mitigations.
Reminiscent of the song made famous by late Hawaiian crooner Don Ho, tiny bubbles are the focal point of a new innovation aimed at transforming produced water from a costly byproduct into a valuable asset. Termed nanobubbles, they are several times smaller than a human red blood cell, which allows them to play with the physics of how dissolved gas interacts with liquids, according to Nano Gas Technologies. The suburban Chicago-based startup says its technology is capable of cheaply producing these nanobubbles to treat produced wastewater that is among the "worst of the worst." The technology works by pushing gas, either oxygen or nitrogen, through a nozzle head that shoots the tiny bubbles into a treatment tank. The result is what the company's chief executive officer, Len Bland, calls "fluffy water" that causes suspended solids to fall and oil to float to the top where it is easily skimmed off.
A project spearheaded by Exxon Mobil, Shell, Chevron, and the Southwest Research Institute (SwRI) has been established to advance separation technology through improved testing methods and collaboration between users and suppliers. The main driver behind the creation of the Separation Technology Research (STAR) program is the industry's need to separate oil, natural gas, and water from the production stream using technology that is lighter, smaller, and less expensive than conventional separation systems. To achieve its goals, the joint industry project must bridge the gap between the test results of separation components in controlled environments and their performance in the real world. "A lot of operators are looking for performance data on separation equipment under fieldlike conditions, but many of the equipment manufacturers do not have that data directly available," said Chris Buckingham, manager of the STAR program and a program director in SwRI's fluids and machinery engineering department. "What we are really trying to understand is how equipment performs under identical situations using standardized test procedures."
Li, Feng (Southwest Petroleum University) | Li, Xiaoping (Southwest Petroleum University) | Zou, Xinbo (CNOOC China Ltd.) | Duan, Zheng (CNOOC China Ltd.) | Liao, Tian (BHGE) | Lu, Xiaonan (BHGE) | Ren, Yang (CNOOC China Ltd.)
The operator of an offshore oilfield located in South China Sea, has been researching for efficient methods to tackle the production constraints from the increasing produced water amount and maximize oil recovery. An ESP assisted downhole oil and water separation system, known as SubSep system, was designed and successfully installed in year 2014. During the operations, the system achieved designed separation performance but went offline due to heavy sand problem. This paper concentrates on sharing the experience of complete cycle of system design, deployment, operation and post-job investigations, and discussing the lessons learned and future improvements for downhole oil and water separation technology.
The downhole oil and water separation system features in two independent ESP to operate simultaneously: the lower ESP feeds well fluid into multistage hydrocyclone where oil is separated from water, and enters upper ESP to lift to ground, while water is injected to injection layer. Installed in year 2014, the system is the first successful deployment of downhole oil and water separation technology in South China Sea area. The system has totally operated 480 days, during which various operation methodologies were experimented and outcomes analyzed. In normal operation the separated water collected from sample line in water injection zone showed 99ppm oil, and 75% of water was reduced to ground, which signaled the significant success in water and oil separation. The system went offline when surface water rate increased abnormally and injected water with high oil concentration. Further investigation of pulled system showed clear evidence of abrasions from sand and quarts. Future improvement pathways were identified as applying multiple sand control methods, simplifying completion strings, enhancing chemical injection programs and implementing surface experiments.
This paper shares the experience of a complete cycle of design, deployment, operation, and post-job investigations of a downhole oil and water separation system, and provide reference for future improvements and optimizations
Reminiscent of the song made famous by late Hawaiian crooner Don Ho, tiny bubbles are the focal point of a new innovation aimed at transforming produced water from a costly byproduct into a valuable asset. Termed nanobubbles, they are several times smaller than a human red blood cell, which allows them to play with the physics of how dissolved gas interacts with liquids, according to Nano Gas Technologies. The suburban Chicago-based startup says its technology is capable of cheaply producing these nanobubbles to treat produced wastewater that is among the "worst of the worst." The result is what the company's chief executive officer, Len Bland, calls "fluffy water" that causes suspended solids to fall and oil to float to the top where it is easily skimmed off. "If you want to put it in technical terms," he said, "we change the specific gravity of the liquid so that it enables the oil that is stuck in the water to rise."