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Liu Y.,Xian Changqing Science and Technology Engineering Co. | Wang L.,Xian Changqing Science and Technology Engineering Co. | Li W.,Xian Changqing Science and Technology Engineering Co. | Chen H.,Xian Changqing Science and Technology Engineering Co. | And 2 more authors.
Natural Gas Industry | Year: 2012

The southern block of the Sulige Gas Field, Ordos Basin, characterized by small single-well controlled reserves, short steady-production period, and strong heterogeneity, is a typical low-permeability and tight lithological gas field. Due to its specific geological characteristics, a peculiar development mode of this block was performed: the alternative development between wells integrated with the block. Based on this, the following techniques have been adopted as the gathering and transmission technology: the natural gas hydrate inhibition by downhole throttling and cluster-well methanol injectionj pipes without heat preservation) gas gathering under medium pressure; continuous metering with fluids at the wellheads gas-liquid separation under normal temperature) pressurization twicei gas and liquid transported separately) and the centralized treatment. Thus, a series of techniques are formed as gas gathering under medium pressure, dual-block valve protection at wellhead, mobile metering and test at gas wells, gas-liquid separate transportation, and wet gas custody transfer metering, which not only reduces the cost in the investment of ground surface engineering, but improves the economic profit of a gas field development project. This study provides reference for the development and construction of similar gas fields.

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