Application and Study of Fine-Silty Sand Control Technique Using Fiber-Complex High-Pressure Pack in Sebei Gas Reservoir

• DOI: 10.2118/97832-ms
• Publication Date: 2007-12-21T01:22:31Z
• Authors: F. Zhou; Y. Zong; Y. Liu; X. Yang; C. Xiong; S. Zhang; L. Sun; J. Wang; J. Li; Z. Guang
• Keywords: Natural gas field; Pressure Control

Abstract Sebei Gas Field in Qinghai is the fourth largest gas field China. The reservoirs here are of unconsolidated Quaternary siltstones and pelitic siltstones, alternating water layers with serious sand production. grain size sands very fine, so it difficult to realize control, a cosmopolitan puzzle. We have succeeded applying series techniques comprehensive control fiber-complex high-pressure packing but without any screen pipe. technology includes reservoir pretreatment, fiber- complex technique high pressure packing. As for soft fibers, which branched chains positive electrical charges, used adsorb fine silty particles form big aggregations stabilization. technique, 3-dimensional reticular fiber resin-coated adopted retention. packing, formation not fractured while composites packed pipe-like barrier around cement sheath perform pipe used, eliminate damage near wellbore zone increase bleeding area. This can achieve dual purpose production stimulation. system had been applied Well Se 7-1-4 remarkable results achieved. After such treatment, output increased on average 2.1 times before. paper presents mainly relevant theory, experimental study, operation design application using