Analysis of Gas Well Classifications and Productivity Influencing Factors in Kela-2 Gas Field

  • Zhaolong LIU PetroChina Research Institute of Petroleum Exploration & Development
  • Yongzhong ZHANG PetroChina Research Institute of Petroleum Exploration & Development
  • Hualin LIU PetroChina Research Institute of Petroleum Exploration & Development
  • Zhikai LV PetroChina Research Institute of Petroleum Exploration & Development
  • Weigang HUANG PetroChina Research Institute of Petroleum Exploration & Development
Keywords: Kela-2 gas field, Production logging, Gas production profile, Gas well classification, Productivity influencing factors, Water invasion pattern

Abstract

As one of the main gas fields in Chinese West-East Gas Transmission Project, cumulative gas production of Kela 2 Gas Field has been over 120 billion cubic meters since 2004. Each gas well has different gas production characteristics, water production, and pressure changes. Advanced water results in a serious non-homogeneous water invasion, and the actual gas production is much less than that in the development scheme. To further enhance the recovery of the Kela 2 Gas Field, productivity influencing factors of each gas pay interval are analyzed by using the production logging data based on geological characteristics. According to the change of the main gas pay and water production from production logging, gas wells are divided into four types, and three water invasion patterns in Kela 2 Gas Field. The causes of gas production changes and water production regime are analyzed for each type first, and then the main productivity influencing factors in gas wells are determined. The outcome shows that pressure drop, water breakthrough of gas pay layers, and different reservoir properties are the main productivity influencing factors. Through gas well classification of the Kela 2 Gas Field, the productivity influencing factors and productivity change regime are determined, which could provide grounds for further enhancing the recovery of the Kela 2 Gas Field.

Author Biographies

Zhaolong LIU, PetroChina Research Institute of Petroleum Exploration & Development

PetroChina Research Institute of Petroleum Exploration & Development, Beijing, China

Yongzhong ZHANG, PetroChina Research Institute of Petroleum Exploration & Development

PetroChina Research Institute of Petroleum Exploration & Development, Beijing, China

Hualin LIU, PetroChina Research Institute of Petroleum Exploration & Development

PetroChina Research Institute of Petroleum Exploration & Development, Beijing, China

Zhikai LV, PetroChina Research Institute of Petroleum Exploration & Development

PetroChina Research Institute of Petroleum Exploration & Development, Beijing, China

Weigang HUANG, PetroChina Research Institute of Petroleum Exploration & Development

PetroChina Research Institute of Petroleum Exploration & Development, Beijing, China

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How to Cite
LIU, Z., ZHANG, Y., LIU, H. ., LV, Z. ., & HUANG, W. . (2021). Analysis of Gas Well Classifications and Productivity Influencing Factors in Kela-2 Gas Field. CT&F - Ciencia, Tecnología Y Futuro, 11(2), 63–70. https://doi.org/10.29047/01225383.382

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Published
2021-12-27

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