CAJ | 학술논문

塔中地区奥陶系碳酸盐岩储层非均质性极强、连续性差，油气水分布异常复杂。单纯地使用直井进行开发效果并不理想，需采用与水平井相结合的部署方法。根据水平井与直井经济效益对比评价，总结出四种适合采用水平井开发的碳酸盐岩油气藏类型：多缝洞单元油气藏、薄层油气藏、边底水油气藏、孔洞型油气藏。通过对这些类型的水平井产能进行分析研究，认为储层的发育特征是基础，水平井轨迹设计是沟通油气的关键因素，采油工艺则是高产油气流的保证。综合考虑上述因素的影响，对塔中碳酸盐岩油气藏采用直井与水平井相结合的布井方法能够更加经济、高效地进行开发。
탑중지구오도계탄산염암저층비균질성겁강、련속성차，유기수분포이상복잡。단순지사용직정진행개발효과병불이상，수채용여수평정상결합적부서방법。근거수평정여직정경제효익대비평개，총결출사충괄합채용수평정개발적탄산염암유기장류형：다봉동단원유기장、박층유기장、변저수유기장、공동형유기장。통과대저사류형적수평정산능진행분석연구，인위저층적발육특정시기출，수평정궤적설계시구통유기적관건인소，채유공예칙시고산유기류적보증。종합고필상술인소적영향，대탑중탄산염암유기장채용직정여수평정상결합적포정방법능구경가경제、고효지진행개발。
For Ordovician carbonate reservoirs in Tazhong area, the heterogeneity is high and the continuity is poor. Distributions of oil, gas and water are extremely complex. Therefore, simply using vertical wells to develop is not ideal. It is necessary to combine deployment meth-od with horizontal wells. According to economic benefits comparison of horizontal wells and vertical wells, this paper summarized four suit-able types for horizontal wells development of carbonate reservoirs:multi-fracture-cavity unit reservoirs, thin bed reservoirs, edge-bottom water reservoirs and vuggy reservoirs. By analyzing the deliverability of these horizontal wells, results suggested that the developmental char-acteristic of reservoir was the base, the trajectory design of horizontal well was the key factor for the migration of oil and gas,and the petro-leum engineering is the guarantee of high capacity oil-gas stream. Considering the influence factors above, carbonate reservoirs in Tazhong area can be more economically and efficiently developed by pattern configuration of combination of vertical wells and horizontal wells.