海上油田水平井二次完井防砂产能预测模型  

Sand Control Productivity Prediction Model for Secondary Completion of Horizontal Wells in Offshore Oilfield

作　　者：林海春 魏丛达 邹信波 孟召兰 王尧 高志伟 邓福成 Lin Haichun;Wei Congda;Zou Xinbo;Meng Zhaolan;Wang Yao;Gao Zhiwei;Deng Fucheng(CNOOC(China)Co.,Ltd.Shenzhen branch;CNOOC EnerTech-Drilling&Production Company;School of Mechanical Engineering,Yangtze University)

机构地区：[1]中海油深圳分公司 [2]中海油能源发展股份有限公司工程技术分公司 [3]长江大学机械工程学院

出　　处：《石油机械》2022年第4期111-117,共7页China Petroleum Machinery

基　　金：中海石油(中国)有限公司项目“番禺油田群在生产井井筒再造及产能释放技术研究”(CCL2020SZPS0174)。

摘　　要：现有水平井产能预测模型较多,但均未考虑二次完井的防砂方式,则在预测中存在一定的误差。鉴于此,以常规完井防砂产能Joshi模拟为基础,考虑海上油田地层参数和完井方式等因素,修正了钻、完、修井作业过程地层伤害的表皮系数,建立了考虑不同二次完井防砂方式的海上油田水平井产能预测模型。对南海番禺区块示例油田的计算结果表明:老筛管射孔后二次筛管完井产能比最小,砾石充填完井次之,独立筛管完井最大;影响油井产能的因素由强到弱依次是穿深、孔密、孔径,并推荐了适合于示例油田的最优射孔参数为穿深800 mm,孔密12孔/m,孔径14 mm。研究结果对海上油田二次完井防砂方式的选择及参数优化具有一定的现场指导意义。There are many productivity prediction models for horizontal wells;however, these models generate some errors in the prediction, since they do not consider the sand control method for secondary completion. In this paper, based on the simulation with the Joshi model for conventional completion sand control, considering the formation parameters and completion methods of offshore oilfield, the skin factor of formation damage during drilling, completion and workover was corrected, and the productivity prediction model of horizontal wells in offshore oilfield considering different secondary completion sand control methods was established. The application in an example oilfield, offshore Panyu block, shows that after perforation with old screen, the productivity ratio of secondary screen completion is the smallest, followed by gravel packing completion, and the productivity ratio of independent screen completion is the largest. The factors influencing well productivity are perforation depth, perforation density and perforation diameter, in a descending degree of influence degree, and the optimal perforation parameters suitable for the example oilfield are recommended as: perforation depth 800 mm, perforation density 12/m, and perforation diameter 14 mm. The study results have certain guiding significance for the selection of sand control methods and parameter optimization for secondary completion in offshore oilfields.

关 键 词：水平井 二次完井 防砂 表皮系数 产能预测模型 产能比 

分 类 号：TE257[石油与天然气工程—油气井工程]