Technologies for Fine Adjustment in the Middle-later Development Stage of Low Permeability Tight Sandstone Gas Reservoirs

doi:10.11885/j.issn.1674-5086.2017.09.15.01

Abstract

Abstract: The low permeability tight sandstone gas reservoirs face the problems of how to further increase the producing degree of reserves and improve the recovery efficiency in the middle-later stage of development. Fine adjustment is an important technical means to improve the development effect. The critical technical challenges in the middle-later stage of development of this type of gas reservoir, such as the remaining reserves description, improving reserves producing degree, and well pattern adaptability evaluation, were analyzed in light of the difference between the middle-later and early stages of development in geology, production performance, and development scheme. Technical solutions were then proposed for the challenges, focusing on potential tapping and improving the recovery of the gas fields. Technical ideas and processes for fine adjustment in the middle-later stage of gas reservoir development were also proposed, based on fine gas reservoir description in the middlelater stage of development, reserves producing degree evaluation, and well spacing optimization. By taking C Gas Field as an example, this technique successfully applied in its middle-later stage of development adjustment, increased the remaining reserves producing degree and overall improved the gas field's development effect and economic benefits.

Key words: low permeability, tight gas, fine adjustment, producing degree of reserves, middle-later stage of development

CLC Number:

TE377

FU Ninghai, TANG Haifa, LIU Qunming. Technologies for Fine Adjustment in the Middle-later Development Stage of Low Permeability Tight Sandstone Gas Reservoirs[J]. 西南石油大学学报(自然科学版), 2018, 40(3): 136-145.

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