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东胜气田属于低孔、低渗、低压的三低气藏,局部地层尤其是刘家沟组底部承压能力低,存在孔隙裂缝,易发生井漏现象,为固井作业带来不利影响。目前采用多项防漏固井技术,优化固井设计,采取有针对性的防漏施工技术措施和“即时稠化”相结合,有效的降低了固井漏失率,取得了良好的固井质量,为后期油气增产措施提供了有力保障。
Dongsheng gas field is a low-porosity, low-permeability and low-pressure three gas reservoirs. The low pressure bearing capacity of the local strata, especially the bottom of Liujiagou Formation, has pore cracks and is prone to well-leakage, which adversely affects cementing operations. At present, a number of leak-proof cementing technologies are used to optimize the cementing design, and the targeted leak-proof construction technology and the “instantaneous thickening” are combined to effectively reduce the cementing leakage rate and achieve good solidification Well quality for the late oil and gas stimulation measures provide a powerful guarantee.