Remote stepless regulation type underground throttling device

• Main Authors: ZHOU YIJUN, TENG WENJIANG, ZHAO WEI, CHEN CHEN, ZENG MINGYONG
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2024
• 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 remote stepless regulation type underground throttling device which comprises an outer cylinder, and a plurality of throttling structures communicating the interior with the exterior are arranged on the side wall of the outer cylinder. The inner cylinder is arranged in the outer cylinder, a plurality of channel holes communicating the interior with the exterior are formed in the inner cylinder, and the channel holes and the throttling structure are staggered at the beginning; the inner cylinder is configured to move step by step in the axial direction of the outer cylinder under the action of pressure, and therefore the size of the overlapped portion of the channel hole throttling device and the throttling structure is adjusted step by step. The downhole throttling device is used for downhole throttling, the throttling hole diameter can be adjusted by applying pressure in a well, the downhole throttling pressure can be accurately adjusted, and stepless adjustment of the yield is achie