摘要
超深高压高产气藏开采过程中往往会面临严重的储层出砂问题,出砂会使砂埋井眼、冲蚀井下油套管柱和地面设备、造成气井减产甚至停产,严重时会导致气井报废。由于高地应力(高水平主应力差)、裂缝发育,气体流速较快等原因,超深高压气井出砂预测困难,常规油气井出砂预测方法适用性不强。以准噶尔盆地南缘区块高压高产砂岩气藏为研究对象,采用理论模型推导分析、数值模拟等手段重点开展高压高产气井出砂影响因素分析及预测方法研究。建立了超深高压气井射孔完井临界出砂压差预测模型,开展了模型适应性评价,验证了其预测精度。研究成果对后续南缘区块高压、高产气井制定安全生产制度具有重要指导意义。
Production of ultra-deep,high pressure,and high production gas reservoirs is often associated with severe sand production.Sand production can cause sand filling in wellbore and erosion of downhole tubing and casing strings and surface equipment,resulting in reduced gas well productivity or even well abandonment.Due to factors such as high in-situ stresses(high principal stress difference),developed fractures,and fast gas flow,it is difficult to predict sand production in ultra-deep high pressure gas wells,and the conventional sand production prediction methods for oil and gas wells presents low applicability.A high pressure,high production sandstone gas reservoir in the southern margin of Junggar Basin is taken as the research object,and the analysis of factors affecting sand production in high pressure,high production gas wells and the study of prediction methods are performed via theoretical derivation analysis,numerical simulation,etc.A prediction model for sand production critical drawdown pressure has been established for ultradeep,high pressure casing perforated gas wells,and the model applicability evaluation has been carried out to verify its prediction accuracy.The findings of this research provide vital guidance for developing safe production schemes for the subsequent high pressure and high production gas wells in the southern margin of Junggar Basin.
作者
蒋贝贝
张国强
王栋
刘佳波
杨乾隆
徐小辉
JIANG Beibei;ZHANG Guoqiang;WANG Dong;LIU Jiabo;YANG Qianlong;XU Xiaohui(National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,Sichuan,China;PetroChina Changqing Oilfield Company,Xi'an 710018,Shaanxi,China;Research Institute of Engineering Technology,PetroChina Xinjiang Oilfield Company,Karamay 834000,Xinjiang,China)
出处
《新疆石油天然气》
CAS
2024年第2期11-20,共10页
Xinjiang Oil & Gas
基金
四川省自然科学基金“枯竭气藏CO_(2)封存盖层封闭演化机制及评价方法”(2022NSFSC0192)。
关键词
砂岩气藏
高压气井
出砂预测
生产制度
准噶尔盆地南缘
sandstone reservoir
high pressure gas well
sand production prediction
production scheme
southern margin of Junggar Basin
