LaboratoryTesting and Field Trial of a New Kinetic Hydrate Inhibitor

Bloys, Ben; Lacey, Cindy

doi:10.4043/7772-ms

Cited by 24 publications

(13 citation statements)

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“…KHIs have been successfully applied [11][12][13][14][15][16][17] , especially in the UK sector of the North Sea. Injection of LDHIs in place of thermodynamic inhibitors has been considered as the most interesting option regarding new methods to prevent hydrate blockages.…”

Section: Low Dose Hydrate Inhibitorsmentioning

confidence: 99%

Kinetic Hydrate Inhibitors - Sensitivity towards Pressure and Corrosion Inhibitors

Peytavy¹,

Glénat²,

Bourg³

2007

International Petroleum Technology Conference

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractReplacement of the traditional thermodynamic hydrate inhibitors (methanol and glycols) in wet gas applications is more and more highly desirable for cost savings and for Health, Safety & Environment (HSE) considerations. This seems achievable by using alternative Kinetic Hydrate Inhibitors (KHI). KHIs are able to delay hydrate formation for the time needed to transport the effluents in hydrate region conditions. The KHI efficiency is generally based both on the subcooling that can be matched by the inhibitor and on the hydrate formation time delay that the inhibitor can provide. Within the frame of various Field Development studies carried out since 1990, we have had the opportunity to evaluate the performance of several KHIs. These evaluations have been conducted on two hydrate loop facilities with a service pressure of respectively 80 bara and 165 bara. Thanks to these two pilots, we have been able to observe and to quantify the influence of various parameters on the KHI efficiency. Among these parameters, two of them have proved to be of importance: the presence of other inhibitors, such as corrosion inhibitors (CI), and the operating pressure. Their strong influence is illustrated in this paper through the results obtained in three different case studies. The practical conclusion is that KHIs selected in "routine" lab tests may be not efficient in the field and that appropriate selection tests are required.

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Section: Low Dose Hydrate Inhibitorsmentioning

confidence: 99%

Kinetic Hydrate Inhibitors - Sensitivity towards Pressure and Corrosion Inhibitors

Peytavy¹,

Glénat²,

Bourg³

2007

International Petroleum Technology Conference

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“…A short summary is given to highlight the valuable experience learned from recent laboratory studies as well as field trials. [22][23][24][25][26][27][28][29][30] The discussion includes the design of an LDHI program for deepwater operations, the implementation of the designed plan and the effective monitoring of the program. In addition, some discussions are made to address other application issues with respect to environmental impact, pressure effect and some misconceptions.…”

Section: Spe 71472mentioning

confidence: 99%

Novel Low Dosage Hydrate Inhibitors for Deepwater Operations

Neff

Mathur³

et al. 2001

SPE Annual Technical Conference and Exhibition

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TX 75083-3836, U.S.A., fax 01-972-952-9435. AbstractNovel low dosage hydrate inhibitors (LDHI) have been developed for applications in oil and gas fields. The newgeneration inhibitors work as kinetic inhibitors that prevent hydrate formation encountered frequently in deepwater operations. These chemicals effectively inhibit hydrate formation regardless of the water cut in the system. They also exhibit a low toxicity that leads to very favorable environmental ratings. Valuable experience has been learned from recent laboratory studies as well as field trials with respect to the application limits and implementation techniques for these new products. The key to the overall success is a full integration of a good front-end design, a comprehensive deployment plan and an effective monitoring program. An overview of the chemistry of these new inhibitors along with their performance under simulated deepwater conditions is briefly discussed. In addition, the effect of LDHI on hydrate formation and the effect of pressure on LDHI performance are addressed.

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“…In recent years, low-dose hydrate inhibitors have been receiving considerable industry attention. [5][6][7][8][9] Replacement of the traditional thermodynamic inhibitors methanol and glycol is highly desirable from both commercial and Health and Safety considerations. The operating costs for these solvent-based inhibitor treatments are expensive, and the offshore facilities for these treatments can be complex and logistically intensive.…”

Section: Introductionmentioning

confidence: 99%

Commercial Deployment of Low-Dosage Hydrate Inhibitors in a Southern North Sea 69 km Wet-Gas Subsea Pipeline

Argo

Blain

Osborne

et al. 2000

SPE Production &Amp; Facilities

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Threshold hydrate inhibitor ͑THI͒ has been successfully commercially deployed at a low-dose rate in a wet-gas pipeline connecting the Hyde-West Sole gas fields to the onshore Easington gas terminal. These gas fields are BP Amoco operated assets and are located in the U.K. sector of the southern North Sea, approximately 70 km offshore of the Easington gas terminal. Three gas platforms: Hyde, West Sole Charlie, and West Sole Bravo, are connected to a common 24-in.-diam flowline to shore and typical gas production lies in the range 50-180 mmscf/d ͑million standard cubic feet per day͒. The three platforms were sequentially converted from glycol to the new THI reagent. During the changeover period to THI reagent the pipeline operated a mixed system containing both THI reagent and glycol. As of 31 October 1996, the THI reagent has been deployed for 14 weeks. In the last three week period glycol content of the produced water arriving at the onshore terminal has been at a low level, typically, Ͻ0.5 wt%.

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LaboratoryTesting and Field Trial of a New Kinetic Hydrate Inhibitor

Cited by 24 publications

References 0 publications

Kinetic Hydrate Inhibitors - Sensitivity towards Pressure and Corrosion Inhibitors

Kinetic Hydrate Inhibitors - Sensitivity towards Pressure and Corrosion Inhibitors

Novel Low Dosage Hydrate Inhibitors for Deepwater Operations

Commercial Deployment of Low-Dosage Hydrate Inhibitors in a Southern North Sea 69 km Wet-Gas Subsea Pipeline

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