大牛地气田马五5气藏水平井开发技术政策研究  

Development Strategies for Horizontal Well in Ma;Gas Reservoir of Daniudi Gas Field

作　　者：张家伟 Zhang Jiawei(No.1 Gas Production Plant,SINOPEC North China Oil&Gas Company,Zhengzhou Henan 450006)

机构地区：[1]中国石化华北油气分公司采气一厂,河南郑州450006

出　　处：《中外能源》2022年第2期55-59,共5页Sino-Global Energy

摘　　要：大牛地气田奥陶系马家沟组目前处于开发试验评价阶段,将逐步成为该气田的产能建设接替阵地,为了达到高效开发,制定合理的开发技术政策,本文从开发层系划分入手,评价合理的开发方式,针对不同的储层特征差异化制定井网井型,针对水平井区利用经济下限法、经济合理法、规定单井产能法、导压系数法、类比法(类比靖边气田马五气藏)等方法研究合理的井距,研究认为:①大牛地气田奥陶系马家沟组气藏适合采用衰竭式开发方式;②开发层系划分为马五_(5)与马五_(6+7)叠合区立体动用,采用"直井+水平井混合井网"立体开发;③非叠合区裂缝—溶蚀孔洞型储层合理水平井井距在1000~1200m,裂缝孔隙型储层合理水平井井距在800~1000m,基于储层条件采取混合井组差异化部署策略。该研究对气田奥陶系气藏合理高效开发具有一定指导意义。The Ordovician Majiagou Formation in Daniudi Gas Field is currently in the stage of development test and evaluation,it will gradually contribute the productivity of the gas field.In order to achieve efficient development and establish reasonable development strategies,beginning with the division of layer series of development in this paper,reasonable development methods are evaluated,and well pattern and well type are developed according to different reservoir characteristics.For the area developed by the horizontal wells,economic lower limit method,economic reasonable method,fixed single well productivity method,pressure conduc tivity coefficient method and analogy method(making an analogy with Gas Reservoir Ma_(5)of Jingbian Gas Field)are used to study reasonable well spacing.Research suggests that:①Depletion development is suitable for the gas reservoirs of Ordovician Majiagou Formation in Daniudi Gas Field;②The layer series of development are divided into M^(5)_(5)and M^(6-7)_(5)superimposed zones for three-dimensional production,and the three-dimensional development of"vertical well+horizontal well mixed pattern"is adopted;③The reasonable horizontal well spacing of fracture-dissolution vug-cave reservoir in non-superimposed area is 1000-1200 m,and that of fracture-porous reservoir is 800-1000 m.Differentiation deployment is made for the combined well group based on the reservoir conditions.This study has certain guiding significance for the rational and effi-cient development of Ordovician gas reservoirs in the gas field.

关 键 词：马家沟组 衰竭式开发 开发层系 混合井网 合理井距 

分 类 号：TE37[石油与天然气工程—油气田开发工程]