Steam flooding oil well flow string

• Main Authors: YAO LIANYONG, ZHANG XUECHAO, ZHOU ZHENGYOU, ZHENG CHUNSHENG, JIANG SHUTING, SHI BAOGUANG
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2018
• 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 utility model provides a steam flooding oil well flow string, includes: sucker rod, oil pipe, sleeve pipe, oil -well pump, overflow excess pressure valve, safety joint, intubate bridging plug, bottom valve, tail pipe, plug, its characterized in that: oil pipe passes through screw thread and oil -well pump and links to each other, sucker rod lower part and plunger threaded connection, through in going into the oil -well pump under the oil pipe, the oil -well pump through the oil pipe nipple joint with overflow the excess pressure valve screw thread and link to each other, overflow the excess pressure valve and link to each other with the safety joint screw thread, safe lower clutch and intubate bridging plug threaded connection, the intubate bridging plug is connected with the bottom valve screw thread through the outer tube, the bottom valve passes through the screw thread to be connected with the tail pipe, tail pipe lower extreme and plug threaded connection. The utility model discloses a steam flooding