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本文分两部分。第一部分介绍国外深井压裂工艺参数选择的情况,第二部分介绍压裂工艺参数选择及计算方法。国外深井压裂工艺参数选择概况一、深井压裂的特点近年来由于美国的能源危机及容易开采的浅层油气田多数已属于开发后期,不得不向深层、致密地层要油气,这些情况大大地促进了深井大型压裂增产技术的进展。从许多这方面的报道中看到(Wattenberg)气田的开采是深井大型压裂的成功实例。该气田于一九七○年发现,气层深2500米左右,渗透率极低(10~(-3)毫达西)。原先认为
This article is divided into two parts. The first part introduces the selection of parameters for deep well fracturing in foreign countries. The second part introduces the selection and calculation method of fracturing parameters. A selection of deep well fracturing technology abroad I. Characteristics of deep well fracturing In recent years, due to the energy crisis in the United States and the easy exploitation of shallow oil and gas fields, most of them belong to the late stage of development and have to be deep and tight formations to oil and gas, which greatly contributed to The deep well fracturing stimulation technology progress. From many of these reports, it is clear that the exploitation of the (Wattenberg) gas field is a successful example of deep fracturing in deep wells. In 1970, it was discovered that the gas field is about 2,500 meters deep with a very low permeability (10 -3 mdah). Originally thought