公开(公告)号：US20230010689A1

公开(公告)日：2023-01-12

申请号：US17859414

申请日：2022-07-07

申请人： Southwest Petroleum University

发明人： Xiaohua TAN ,  Xiaojun ZHOU ,  Xiaobing HAN ,  Xian PENG ,  Longxin LI ,  Qingyan MEI ,  Qian LI ,  Zhenglin MAO

IPC分类号： E21B47/06

摘要： The present disclosure provides a water invasion-oriented dynamic production allocation method for a water-bearing carbonatite gas reservoir, and belongs to the technical field of oil and gas field development. The problem that water breakthrough of a single well is too early due to uneven water invasion of an existing water-bearing carbonatite gas reservoir is solved. According to the technical scheme, on the basis of an original gas well production allocation scheme of a water-bearing carbonatite gas reservoir, the average water invasion rate of the reservoir is calculated as a stability reference of water invasion rates throughout the production period. A new water invasion-oriented production allocation method is designed from two aspects of stability of water invasion and uniformity of water invasion driving; and meanwhile, a reasonable production allocation range is predicted through a traditional deliverability equation, and a water invasion-oriented dynamic production allocation mathematical model is established.

公开(公告)号：US20230258082A1

公开(公告)日：2023-08-17

申请号：US17863698

申请日：2022-07-13

申请人： Southwest Petroleum University

发明人： Xiaohua TAN ,  Xiaobing HAN ,  Xiaoping LI ,  Mingqing KUI ,  Zihan ZHAO ,  Xixiang LIU ,  Tao LI ,  Youjie XU ,  Yumin LI ,  Yongqiang JIN

IPC分类号： E21B49/08 ,  E21B47/06

CPC分类号： E21B49/0875 ,  E21B47/06 ,  E21B2200/20

摘要： An intelligent identification method of aquifer distribution in complex edge-water oil and gas reservoirs is provided. The problem, that targeted water control countermeasures cannot be proposed due to unclear identification of edge-water distribution in complex edge-water reservoirs, is resolved. Based on geological data and production data of a single well, establish a numerical simulation model of a water influx unit for simulating inflow dynamic of complex edge-water influx; by a genetic algorithm, correct characteristic parameters of an aquifer unit, including volume and water influx of the aquifer unit; automatically fit dynamic production data calculated by the model with actual dynamic production data, to obtain optimal characteristic parameters of the aquifer unit; and assign the characteristic parameters to the aquifer unit for inversion to determine aquifer distribution. The method has simple steps and accuracy by comparing the result of aquifer distribution inversion and that of numerical simulator.