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微孔径向喷射技术是采用专用工具在油层部位套管上钻孔,然后下入定向工具和喷射工具,采用高压水力射流,在储层中的不同方位喷射出多个微孔径向水平井眼。本文介绍了微孔径向喷射技术专用工具,以及在齐2-3-313井的现场试验情况。该技术具有周期短、成本低优势,是微孔径向水平井经济有效的喷射钻井手段,在老油气区调整开发井网、低渗油气藏及煤层气增产等方面具有广阔的应用前景。
Micropore radial jetting technology uses special tools to drill holes in the casing of the oil layer, and then into directional tools and jetting tools. High-pressure hydraulic jets inject multiple microporous radial horizontal wellbores at different azimuths in the reservoir. This article describes the special tools for microporous radial jetting and the field trials at Qi 2-3-313. The technology has the advantages of short cycle and low cost. It is an economical and effective jet drilling method with horizontal and vertical micropores. It has broad application prospects in the field of adjusting the development well pattern, low permeability reservoirs and coalbed methane stimulation in the old oil and gas fields.