Field Scale Research on Gas Chamber Pumps

Hernandez, Ali; Reyna, Marcelo

doi:10.2118/77729-ms

Cited by 1 publication

(3 citation statements)

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“…As such, choosing the appropriate methods of artificial lift for the cold production of heavy oil is important. Based on theory of the reduction of wellbore viscosity and lifting, gas lift technology for heavy oil exploitation is relatively mature in many 1 3 countries (Jaimes and Zimmerman 1985;Blann and Garcia 1999;Hernandez and Marcelo 2002;Hong'en et al 2007;Brito et al 2010). From 1982 to 1984, heavy oil exploitation in the Urdaneta offshore oilfield of Lake Maracaibo of Venezuela achieved success using slug gas lift (Jaimes and Zimmerman 1985).…”

Section: Introductionmentioning

confidence: 99%

“…From 1982 to 1984, heavy oil exploitation in the Urdaneta offshore oilfield of Lake Maracaibo of Venezuela achieved success using slug gas lift (Jaimes and Zimmerman 1985). In 1988, the lifting of heavy oil containing water and sand achieved success in eastern Venezuela using the gas lift technology of air chamber pump (Hernandez and Marcelo 2002). In 1997, in the Morichal area of Venezuela, the optimization of injecting diluent (diesel oil) from the bottom of a well and the matching technology of gas lift showed that injecting diluent and gas lift can significantly enhance the production of heavy oil wells (Blann and Garcia 1999).…”

Section: Introductionmentioning

confidence: 99%

“…In 1997, in the Morichal area of Venezuela, the optimization of injecting diluent (diesel oil) from the bottom of a well and the matching technology of gas lift showed that injecting diluent and gas lift can significantly enhance the production of heavy oil wells (Blann and Garcia 1999). Hernandez and Marcelo (2002) proposed a model to predict liquid production and gas consumption of a single well for gas chamber pump wells. In 2005, heavy oil exploitation achieved success using continuous gas lift in Intercampo oilfield of Venezuela (Hong'en et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Research on heavy oil gas lift assisted with light oil injected from the annulus

Zhong

Zhu

Zeng

et al. 2018

J Petrol Explor Prod Technol

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An experimental study on the multiphase flow of heavy oil gas lift was conducted on 18.25 m high vertical tube. Based on the experimental results and the wellbore heat transfer mechanism, a coupling model of wellbore pressure-temperature gradients was presented for the gas lift with light oil injected from the annulus. Moreover, the solution of coupling annulus flow with tubing flow was also established through cyclic iteration. Experimental results showed that gas injection enables heavy oil and light oil to mix rapidly and completely. Evaluation of pressure drop models shows that the error of the Ansari model is approximately 12.12%, by comparison it is the least. A novel method of gas lift assisted with light oil from the annulus was proposed to solve the actual situation wherein heavy oil cannot be easily lifted from the wellbore at Tuyuke Block in Tuha Oilfield. An instance design based on the sensitivity analysis of the gas injection rate and diluting rate was also completed. The instance design shows that the productivity of heavy oil well can be significantly improved using gas lift and blending diluting oil technology. In order to verify the feasibility and effect of gas lift assisted with light oil in heavy oil well, a pilot test was implemented in Tahe Oilfield, Xinjiang, China. The results of pilot test show clearly that the daily production rate increased from 11.6 to 38 t/day, and the ratio of light oil with heavy oil decreased from 11:1 to 4:1. From the above, gas injection can significantly reduce the usage of light oil needed, and gas lift assisted with light oil injected from the bottom hole can significantly enhance the productivity of heavy oil wells.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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