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塔里木盆地塔河油田主力产层为碳酸盐岩油藏,是经多期次构造运动、多期次岩溶作用及多期次油气运移聚集成藏的缝洞型油藏,具有多压力系统,多油水关系、多种流体性质并存的特点;75%以上油井完井后自然完井产能低或无自然产能,而根据各种地质资料的响应特征看,远井带可能发育缝洞系统,需要通过酸压改造手段投产;碎屑岩油藏总体上存在物性较差,自然产能低,油水关系较为复杂的特点,特别是石炭系、泥盆系、志留系等难动用储层开采难度大,需要形成科学有效的完井工艺技术,满足气井安全和生产需要,本文介绍了适合塔河油田特点的几种完井工艺技术。
The main formation of Tahe Oilfield in Tarim Basin is a carbonate reservoir, which is a fractured-cavity reservoir characterized by multi-stage tectonic movement, multi-stage karstification and multi-stage hydrocarbon migration and accumulation. The multi-pressure system , Multi-oil-water relationship, and multiple fluid properties coexist. After completion of more than 75% of oil wells, the natural well completion productivity is low or there is no natural productivity. According to the response characteristics of various geological data, the fissure- Which need to be put into operation by the means of acid pressure modification. The clastic rock reservoirs generally have poor physical properties, low natural productivity and complex oil-water relations, especially difficulty in hard-to-obtain reservoir such as Carboniferous, Devonian and Silurian Large, the need to form a scientific and effective completion technology to meet the gas well safety and production needs, this article describes several characteristics of the Tahe oilfield several completion technology.