随着油田开发调整的不断深入,油田开发挖潜对象的基础条件越来越差,逐步由发育条件好的一类油层,转变到了发育条件较差的二类储层、甚至发育条件极差的三类储层,总体上往往呈现砂体发育厚度小、碎屑岩和泥质含量高、孔隙度低、渗透率低等特点。在产能井上应用常规完井工艺很难实现这部分储量的有效动用。应用常规工艺即使在初期能达到指标要求,但在投产后往往出现产量递减速度快、综合递减率高等问题。因此,低孔特低渗油藏剩余油的挖潜对采油工程、尤其是完井设计的要求越来越高。为了能实现试验区块难采储量的有效动用,产能井设计人员在开发区块试验应用了大规模压裂完井工艺技术,通过现场试验应用该项技术,在达到产能指标的同时,取得了较好的增油效果和一定的经济效益,该区块的试验成功,为后续该类区块的开发起到较好的借鉴和指导作用。 With the deepening of oilfield development and adjustment, the basic conditions for tapping potential in oilfield development are getting worse and worse, gradually changing from a well of well-developed oil reservoirs to a second reservoir of poorly developed conditions, and even poorly developed three The reservoirs generally have the characteristics of small thickness of sand body, high content of clastic rock and mud, low porosity and low permeability. It is very difficult to realize the effective use of this part of reserves by applying conventional completion technology in production wells. Application of conventional technology even in the early stages of indicators can meet the requirements, but often after the operation of production decline rapidly, the overall decline rate higher. Therefore, the tapping potential of remaining oil in low-porosity and ultra-low permeability reservoirs has become increasingly demanding for oil production engineering, especially completion design. In order to realize the effective utilization of recalcitrant reserves in the test block, the designer of the production well applied the large-scale fracturing and completion technology in the development block test. Through the field test, the technology was applied and at the same time the production capacity index was reached, Better oiling effect and certain economic benefits, and the successful test of the block has played a good reference and guidance for the follow-up development of such blocks.