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采自北海和美国的经验表明,就开采低渗气藏而言,横向压裂水平井较诸如压裂垂直井等常规技术更为有效。然而,横向压裂水平井的完井比较昂贵,而且往往被复杂的裂缝形状所困扰,所以精心选择应用储藏是很重要的。该文应用拟稳态流入模型回顾了横向压裂水平井所需的储藏条件。为了避免裂缝转向。横向裂缝应直接起裂自井眼并且不具有纵向分量。拥有天然裂缝或沿水平井段应力差大的储层进行横问压裂较易成功。该文介绍了鉴别这类储层的准则,并通过实例说明了横向压裂水平#在澳大利亚低渗气藏的成功应用。
Experiences drawn from the North Sea and the United States show that lateral fracturing horizontal wells are more effective than conventional technologies such as fracturing vertical wells for the production of low-permeability gas reservoirs. However, completion of horizontal fractured horizontal wells is more expensive and often plagued by complex fracture shapes, so careful selection of storage is important. This paper reviews the storage conditions required for horizontal fracturing horizontal wells using the quasi-steady state inflow model. In order to avoid cracks steering. Lateral cracks should originate directly from the borehole and have no longitudinal component. It is easier to conduct cross-flow fracturing with natural fractures or reservoirs with large stress differences along horizontal wellbores. This paper introduces the criteria for identifying such reservoirs and illustrates the successful application of horizontal fracturing level # in low-permeability gas reservoirs in Australia.