Novel oil-gas well filling system and application method of same

• Main Authors: FENG GUOJIANG, ZHANG SONGMEI, PEI BAILIN
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2014
• 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 discloses a novel oil-gas well filling system and an application method of the system. The oil-gas well filling system comprises an oil-gas well wall and a well-in pipe string put into an oil-gas well, wherein the well-in pipe string and the well wall form a ring space, and the well-in pipe string is provided with at least one circulation-controllable device. By using the novel oil-gas well filling system, a compact and complete half-penetrative seal baffling ring can be achieved in a whole oil-gas well. The method specifically comprises the phases of: 1, opening the circulation-controllable device, and forming a filling grain sand bed; 2, closing the circulation-controllable device; 3, completely building a half-penetrative seal baffling ring. The novel oil-gas well filling system facilitates building of the compact and complete half-penetrative seal baffle ring under the condition that flow-controlling filter pipe columns are placed, improving success rate of building of the half-penetrative s