Device and method for evaluating single well productivity of gas well

• Main Authors: LU YAN, LIN GUANGRONG, LIU QIULAN, SHAO CHUANGGUO, LI YONGSHENG, WANG HUILING, LUO LIRONG, WANG DONGXU, REN ZHIPENG, ZHANG ZHIFENG, LIU XUEGANG, REN ZHAOCAI, HUANG JING
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2017
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention provides a device for evaluating the single well productivity of a gas well. The device comprises a gas source and a constant-temperature box, a plurality of rock core holders are parallelly connected with the gas source, the inlet end of each rock core holder is connected with the gas source, standard gas cylinders are arranged between the rock core holders and the gas source, the outlet end of each rock core holder is connected with a back-pressure valve, rock cores are placed in the rock core holders, and the upper portions of the rock core holders are connected with ring pressure pumps; the back-pressure valves, the rock core holders and the standard gas cylinders are all located in the constant-temperature box. In the constant-temperature box, the formation temperature can be simulated for performing an experiment. The device and method can not only evaluate single-well single-layer productivity and single-well multilayer commingled productivity, but also can analyze the factors that affect